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Can't Recover Bitcoin Cash from Old Electrum Wallet. Getting Invalid Seed message and can't scan private key

Hoping you guys can help me out. So I found a seed for an old wallet I hadn't used in quite some time. I checked on FindMyCoins.Ninja and I see I have a little over 2 BCH on there.
I've tried following directions on various wallets to recover it and when I try to plugin my seed from my Electrum address it tells my invalid seed and when I try to scan the private key it tells me it can't scan it.
Can someone maybe point me in the right direction?
submitted by yogaandpickles to btc [link] [comments]

Technical: Taproot: Why Activate?

This is a follow-up on https://old.reddit.com/Bitcoin/comments/hqzp14/technical_the_path_to_taproot_activation/
Taproot! Everybody wants it!! But... you might ask yourself: sure, everybody else wants it, but why would I, sovereign Bitcoin HODLer, want it? Surely I can be better than everybody else because I swapped XXX fiat for Bitcoin unlike all those nocoiners?
And it is important for you to know the reasons why you, o sovereign Bitcoiner, would want Taproot activated. After all, your nodes (or the nodes your wallets use, which if you are SPV, you hopefully can pester to your wallet vendoimplementor about) need to be upgraded in order for Taproot activation to actually succeed instead of becoming a hot sticky mess.
First, let's consider some principles of Bitcoin.
I'm sure most of us here would agree that the above are very important principles of Bitcoin and that these are principles we would not be willing to remove. If anything, we would want those principles strengthened (especially the last one, financial privacy, which current Bitcoin is only sporadically strong with: you can get privacy, it just requires effort to do so).
So, how does Taproot affect those principles?

Taproot and Your /Coins

Most HODLers probably HODL their coins in singlesig addresses. Sadly, switching to Taproot would do very little for you (it gives a mild discount at spend time, at the cost of a mild increase in fee at receive time (paid by whoever sends to you, so if it's a self-send from a P2PKH or bech32 address, you pay for this); mostly a wash).
(technical details: a Taproot output is 1 version byte + 32 byte public key, while a P2WPKH (bech32 singlesig) output is 1 version byte + 20 byte public key hash, so the Taproot output spends 12 bytes more; spending from a P2WPKH requires revealing a 32-byte public key later, which is not needed with Taproot, and Taproot signatures are about 9 bytes smaller than P2WPKH signatures, but the 32 bytes plus 9 bytes is divided by 4 because of the witness discount, so it saves about 11 bytes; mostly a wash, it increases blockweight by about 1 virtual byte, 4 weight for each Taproot-output-input, compared to P2WPKH-output-input).
However, as your HODLings grow in value, you might start wondering if multisignature k-of-n setups might be better for the security of your savings. And it is in multisignature that Taproot starts to give benefits!
Taproot switches to using Schnorr signing scheme. Schnorr makes key aggregation -- constructing a single public key from multiple public keys -- almost as trivial as adding numbers together. "Almost" because it involves some fairly advanced math instead of simple boring number adding, but hey when was the last time you added up your grocery list prices by hand huh?
With current P2SH and P2WSH multisignature schemes, if you have a 2-of-3 setup, then to spend, you need to provide two different signatures from two different public keys. With Taproot, you can create, using special moon math, a single public key that represents your 2-of-3 setup. Then you just put two of your devices together, have them communicate to each other (this can be done airgapped, in theory, by sending QR codes: the software to do this is not even being built yet, but that's because Taproot hasn't activated yet!), and they will make a single signature to authorize any spend from your 2-of-3 address. That's 73 witness bytes -- 18.25 virtual bytes -- of signatures you save!
And if you decide that your current setup with 1-of-1 P2PKH / P2WPKH addresses is just fine as-is: well, that's the whole point of a softfork: backwards-compatibility; you can receive from Taproot users just fine, and once your wallet is updated for Taproot-sending support, you can send to Taproot users just fine as well!
(P2WPKH and P2WSH -- SegWit v0 -- addresses start with bc1q; Taproot -- SegWit v1 --- addresses start with bc1p, in case you wanted to know the difference; in bech32 q is 0, p is 1)
Now how about HODLers who keep all, or some, of their coins on custodial services? Well, any custodial service worth its salt would be doing at least 2-of-3, or probably something even bigger, like 11-of-15. So your custodial service, if it switched to using Taproot internally, could save a lot more (imagine an 11-of-15 getting reduced from 11 signatures to just 1!), which --- we can only hope! --- should translate to lower fees and better customer service from your custodial service!
So I think we can say, very accurately, that the Bitcoin principle --- that YOU are in control of your money --- can only be helped by Taproot (if you are doing multisignature), and, because P2PKH and P2WPKH remain validly-usable addresses in a Taproot future, will not be harmed by Taproot. Its benefit to this principle might be small (it mostly only benefits multisignature users) but since it has no drawbacks with this (i.e. singlesig users can continue to use P2WPKH and P2PKH still) this is still a nice, tidy win!
(even singlesig users get a minor benefit, in that multisig users will now reduce their blockchain space footprint, so that fees can be kept low for everybody; so for example even if you have your single set of private keys engraved on titanium plates sealed in an airtight box stored in a safe buried in a desert protected by angry nomads riding giant sandworms because you're the frickin' Kwisatz Haderach, you still gain some benefit from Taproot)
And here's the important part: if P2PKH/P2WPKH is working perfectly fine with you and you decide to never use Taproot yourself, Taproot will not affect you detrimentally. First do no harm!

Taproot and Your Contracts

No one is an island, no one lives alone. Give and you shall receive. You know: by trading with other people, you can gain expertise in some obscure little necessity of the world (and greatly increase your productivity in that little field), and then trade the products of your expertise for necessities other people have created, all of you thereby gaining gains from trade.
So, contracts, which are basically enforceable agreements that facilitate trading with people who you do not personally know and therefore might not trust.
Let's start with a simple example. You want to buy some gewgaws from somebody. But you don't know them personally. The seller wants the money, you want their gewgaws, but because of the lack of trust (you don't know them!! what if they're scammers??) neither of you can benefit from gains from trade.
However, suppose both of you know of some entity that both of you trust. That entity can act as a trusted escrow. The entity provides you security: this enables the trade, allowing both of you to get gains from trade.
In Bitcoin-land, this can be implemented as a 2-of-3 multisignature. The three signatories in the multisgnature would be you, the gewgaw seller, and the escrow. You put the payment for the gewgaws into this 2-of-3 multisignature address.
Now, suppose it turns out neither of you are scammers (whaaaat!). You receive the gewgaws just fine and you're willing to pay up for them. Then you and the gewgaw seller just sign a transaction --- you and the gewgaw seller are 2, sufficient to trigger the 2-of-3 --- that spends from the 2-of-3 address to a singlesig the gewgaw seller wants (or whatever address the gewgaw seller wants).
But suppose some problem arises. The seller gave you gawgews instead of gewgaws. Or you decided to keep the gewgaws but not sign the transaction to release the funds to the seller. In either case, the escrow is notified, and if it can sign with you to refund the funds back to you (if the seller was a scammer) or it can sign with the seller to forward the funds to the seller (if you were a scammer).
Taproot helps with this: like mentioned above, it allows multisignature setups to produce only one signature, reducing blockchain space usage, and thus making contracts --- which require multiple people, by definition, you don't make contracts with yourself --- is made cheaper (which we hope enables more of these setups to happen for more gains from trade for everyone, also, moon and lambos).
(technology-wise, it's easier to make an n-of-n than a k-of-n, making a k-of-n would require a complex setup involving a long ritual with many communication rounds between the n participants, but an n-of-n can be done trivially with some moon math. You can, however, make what is effectively a 2-of-3 by using a three-branch SCRIPT: either 2-of-2 of you and seller, OR 2-of-2 of you and escrow, OR 2-of-2 of escrow and seller. Fortunately, Taproot adds a facility to embed a SCRIPT inside a public key, so you can have a 2-of-2 Taprooted address (between you and seller) with a SCRIPT branch that can instead be spent with 2-of-2 (you + escrow) OR 2-of-2 (seller + escrow), which implements the three-branched SCRIPT above. If neither of you are scammers (hopefully the common case) then you both sign using your keys and never have to contact the escrow, since you are just using the escrow public key without coordinating with them (because n-of-n is trivial but k-of-n requires setup with communication rounds), so in the "best case" where both of you are honest traders, you also get a privacy boost, in that the escrow never learns you have been trading on gewgaws, I mean ewww, gawgews are much better than gewgaws and therefore I now judge you for being a gewgaw enthusiast, you filthy gewgawer).

Taproot and Your Contracts, Part 2: Cryptographic Boogaloo

Now suppose you want to buy some data instead of things. For example, maybe you have some closed-source software in trial mode installed, and want to pay the developer for the full version. You want to pay for an activation code.
This can be done, today, by using an HTLC. The developer tells you the hash of the activation code. You pay to an HTLC, paying out to the developer if it reveals the preimage (the activation code), or refunding the money back to you after a pre-agreed timeout. If the developer claims the funds, it has to reveal the preimage, which is the activation code, and you can now activate your software. If the developer does not claim the funds by the timeout, you get refunded.
And you can do that, with HTLCs, today.
Of course, HTLCs do have problems:
Fortunately, with Schnorr (which is enabled by Taproot), we can now use the Scriptless Script constuction by Andrew Poelstra. This Scriptless Script allows a new construction, the PTLC or Pointlocked Timelocked Contract. Instead of hashes and preimages, just replace "hash" with "point" and "preimage" with "scalar".
Or as you might know them: "point" is really "public key" and "scalar" is really a "private key". What a PTLC does is that, given a particular public key, the pointlocked branch can be spent only if the spender reveals the private key of the given public key to you.
Another nice thing with PTLCs is that they are deniable. What appears onchain is just a single 2-of-2 signature between you and the developemanufacturer. It's like a magic trick. This signature has no special watermarks, it's a perfectly normal signature (the pledge). However, from this signature, plus some datta given to you by the developemanufacturer (known as the adaptor signature) you can derive the private key of a particular public key you both agree on (the turn). Anyone scraping the blockchain will just see signatures that look just like every other signature, and as long as nobody manages to hack you and get a copy of the adaptor signature or the private key, they cannot get the private key behind the public key (point) that the pointlocked branch needs (the prestige).
(Just to be clear, the public key you are getting the private key from, is distinct from the public key that the developemanufacturer will use for its funds. The activation key is different from the developer's onchain Bitcoin key, and it is the activation key whose private key you will be learning, not the developer's/manufacturer's onchain Bitcoin key).
So:
Taproot lets PTLCs exist onchain because they enable Schnorr, which is a requirement of PTLCs / Scriptless Script.
(technology-wise, take note that Scriptless Script works only for the "pointlocked" branch of the contract; you need normal Script, or a pre-signed nLockTimed transaction, for the "timelocked" branch. Since Taproot can embed a script, you can have the Taproot pubkey be a 2-of-2 to implement the Scriptless Script "pointlocked" branch, then have a hidden script that lets you recover the funds with an OP_CHECKLOCKTIMEVERIFY after the timeout if the seller does not claim the funds.)

Quantum Quibbles!

Now if you were really paying attention, you might have noticed this parenthetical:
(technical details: a Taproot output is 1 version byte + 32 byte public key, while a P2WPKH (bech32 singlesig) output is 1 version byte + 20 byte public key hash...)
So wait, Taproot uses raw 32-byte public keys, and not public key hashes? Isn't that more quantum-vulnerable??
Well, in theory yes. In practice, they probably are not.
It's not that hashes can be broken by quantum computes --- they're still not. Instead, you have to look at how you spend from a P2WPKH/P2PKH pay-to-public-key-hash.
When you spend from a P2PKH / P2WPKH, you have to reveal the public key. Then Bitcoin hashes it and checks if this matches with the public-key-hash, and only then actually validates the signature for that public key.
So an unconfirmed transaction, floating in the mempools of nodes globally, will show, in plain sight for everyone to see, your public key.
(public keys should be public, that's why they're called public keys, LOL)
And if quantum computers are fast enough to be of concern, then they are probably fast enough that, in the several minutes to several hours from broadcast to confirmation, they have already cracked the public key that is openly broadcast with your transaction. The owner of the quantum computer can now replace your unconfirmed transaction with one that pays the funds to itself. Even if you did not opt-in RBF, miners are still incentivized to support RBF on RBF-disabled transactions.
So the extra hash is not as significant a protection against quantum computers as you might think. Instead, the extra hash-and-compare needed is just extra validation effort.
Further, if you have ever, in the past, spent from the address, then there exists already a transaction indelibly stored on the blockchain, openly displaying the public key from which quantum computers can derive the private key. So those are still vulnerable to quantum computers.
For the most part, the cryptographers behind Taproot (and Bitcoin Core) are of the opinion that quantum computers capable of cracking Bitcoin pubkeys are unlikely to appear within a decade or two.
So:
For now, the homomorphic and linear properties of elliptic curve cryptography provide a lot of benefits --- particularly the linearity property is what enables Scriptless Script and simple multisignature (i.e. multisignatures that are just 1 signature onchain). So it might be a good idea to take advantage of them now while we are still fairly safe against quantum computers. It seems likely that quantum-safe signature schemes are nonlinear (thus losing these advantages).

Summary

I Wanna Be The Taprooter!

So, do you want to help activate Taproot? Here's what you, mister sovereign Bitcoin HODLer, can do!

But I Hate Taproot!!

That's fine!

Discussions About Taproot Activation

submitted by almkglor to Bitcoin [link] [comments]

[ Bitcoin ] Technical: Taproot: Why Activate?

Topic originally posted in Bitcoin by almkglor [link]
This is a follow-up on https://old.reddit.com/Bitcoin/comments/hqzp14/technical_the_path_to_taproot_activation/
Taproot! Everybody wants it!! But... you might ask yourself: sure, everybody else wants it, but why would I, sovereign Bitcoin HODLer, want it? Surely I can be better than everybody else because I swapped XXX fiat for Bitcoin unlike all those nocoiners?
And it is important for you to know the reasons why you, o sovereign Bitcoiner, would want Taproot activated. After all, your nodes (or the nodes your wallets use, which if you are SPV, you hopefully can pester to your wallet vendoimplementor about) need to be upgraded in order for Taproot activation to actually succeed instead of becoming a hot sticky mess.
First, let's consider some principles of Bitcoin.
I'm sure most of us here would agree that the above are very important principles of Bitcoin and that these are principles we would not be willing to remove. If anything, we would want those principles strengthened (especially the last one, financial privacy, which current Bitcoin is only sporadically strong with: you can get privacy, it just requires effort to do so).
So, how does Taproot affect those principles?

Taproot and Your /Coins

Most HODLers probably HODL their coins in singlesig addresses. Sadly, switching to Taproot would do very little for you (it gives a mild discount at spend time, at the cost of a mild increase in fee at receive time (paid by whoever sends to you, so if it's a self-send from a P2PKH or bech32 address, you pay for this); mostly a wash).
(technical details: a Taproot output is 1 version byte + 32 byte public key, while a P2WPKH (bech32 singlesig) output is 1 version byte + 20 byte public key hash, so the Taproot output spends 12 bytes more; spending from a P2WPKH requires revealing a 32-byte public key later, which is not needed with Taproot, and Taproot signatures are about 9 bytes smaller than P2WPKH signatures, but the 32 bytes plus 9 bytes is divided by 4 because of the witness discount, so it saves about 11 bytes; mostly a wash, it increases blockweight by about 1 virtual byte, 4 weight for each Taproot-output-input, compared to P2WPKH-output-input).
However, as your HODLings grow in value, you might start wondering if multisignature k-of-n setups might be better for the security of your savings. And it is in multisignature that Taproot starts to give benefits!
Taproot switches to using Schnorr signing scheme. Schnorr makes key aggregation -- constructing a single public key from multiple public keys -- almost as trivial as adding numbers together. "Almost" because it involves some fairly advanced math instead of simple boring number adding, but hey when was the last time you added up your grocery list prices by hand huh?
With current P2SH and P2WSH multisignature schemes, if you have a 2-of-3 setup, then to spend, you need to provide two different signatures from two different public keys. With Taproot, you can create, using special moon math, a single public key that represents your 2-of-3 setup. Then you just put two of your devices together, have them communicate to each other (this can be done airgapped, in theory, by sending QR codes: the software to do this is not even being built yet, but that's because Taproot hasn't activated yet!), and they will make a single signature to authorize any spend from your 2-of-3 address. That's 73 witness bytes -- 18.25 virtual bytes -- of signatures you save!
And if you decide that your current setup with 1-of-1 P2PKH / P2WPKH addresses is just fine as-is: well, that's the whole point of a softfork: backwards-compatibility; you can receive from Taproot users just fine, and once your wallet is updated for Taproot-sending support, you can send to Taproot users just fine as well!
(P2WPKH and P2WSH -- SegWit v0 -- addresses start with bc1q; Taproot -- SegWit v1 --- addresses start with bc1p, in case you wanted to know the difference; in bech32 q is 0, p is 1)
Now how about HODLers who keep all, or some, of their coins on custodial services? Well, any custodial service worth its salt would be doing at least 2-of-3, or probably something even bigger, like 11-of-15. So your custodial service, if it switched to using Taproot internally, could save a lot more (imagine an 11-of-15 getting reduced from 11 signatures to just 1!), which --- we can only hope! --- should translate to lower fees and better customer service from your custodial service!
So I think we can say, very accurately, that the Bitcoin principle --- that YOU are in control of your money --- can only be helped by Taproot (if you are doing multisignature), and, because P2PKH and P2WPKH remain validly-usable addresses in a Taproot future, will not be harmed by Taproot. Its benefit to this principle might be small (it mostly only benefits multisignature users) but since it has no drawbacks with this (i.e. singlesig users can continue to use P2WPKH and P2PKH still) this is still a nice, tidy win!
(even singlesig users get a minor benefit, in that multisig users will now reduce their blockchain space footprint, so that fees can be kept low for everybody; so for example even if you have your single set of private keys engraved on titanium plates sealed in an airtight box stored in a safe buried in a desert protected by angry nomads riding giant sandworms because you're the frickin' Kwisatz Haderach, you still gain some benefit from Taproot)
And here's the important part: if P2PKH/P2WPKH is working perfectly fine with you and you decide to never use Taproot yourself, Taproot will not affect you detrimentally. First do no harm!

Taproot and Your Contracts

No one is an island, no one lives alone. Give and you shall receive. You know: by trading with other people, you can gain expertise in some obscure little necessity of the world (and greatly increase your productivity in that little field), and then trade the products of your expertise for necessities other people have created, all of you thereby gaining gains from trade.
So, contracts, which are basically enforceable agreements that facilitate trading with people who you do not personally know and therefore might not trust.
Let's start with a simple example. You want to buy some gewgaws from somebody. But you don't know them personally. The seller wants the money, you want their gewgaws, but because of the lack of trust (you don't know them!! what if they're scammers??) neither of you can benefit from gains from trade.
However, suppose both of you know of some entity that both of you trust. That entity can act as a trusted escrow. The entity provides you security: this enables the trade, allowing both of you to get gains from trade.
In Bitcoin-land, this can be implemented as a 2-of-3 multisignature. The three signatories in the multisgnature would be you, the gewgaw seller, and the escrow. You put the payment for the gewgaws into this 2-of-3 multisignature address.
Now, suppose it turns out neither of you are scammers (whaaaat!). You receive the gewgaws just fine and you're willing to pay up for them. Then you and the gewgaw seller just sign a transaction --- you and the gewgaw seller are 2, sufficient to trigger the 2-of-3 --- that spends from the 2-of-3 address to a singlesig the gewgaw seller wants (or whatever address the gewgaw seller wants).
But suppose some problem arises. The seller gave you gawgews instead of gewgaws. Or you decided to keep the gewgaws but not sign the transaction to release the funds to the seller. In either case, the escrow is notified, and if it can sign with you to refund the funds back to you (if the seller was a scammer) or it can sign with the seller to forward the funds to the seller (if you were a scammer).
Taproot helps with this: like mentioned above, it allows multisignature setups to produce only one signature, reducing blockchain space usage, and thus making contracts --- which require multiple people, by definition, you don't make contracts with yourself --- is made cheaper (which we hope enables more of these setups to happen for more gains from trade for everyone, also, moon and lambos).
(technology-wise, it's easier to make an n-of-n than a k-of-n, making a k-of-n would require a complex setup involving a long ritual with many communication rounds between the n participants, but an n-of-n can be done trivially with some moon math. You can, however, make what is effectively a 2-of-3 by using a three-branch SCRIPT: either 2-of-2 of you and seller, OR 2-of-2 of you and escrow, OR 2-of-2 of escrow and seller. Fortunately, Taproot adds a facility to embed a SCRIPT inside a public key, so you can have a 2-of-2 Taprooted address (between you and seller) with a SCRIPT branch that can instead be spent with 2-of-2 (you + escrow) OR 2-of-2 (seller + escrow), which implements the three-branched SCRIPT above. If neither of you are scammers (hopefully the common case) then you both sign using your keys and never have to contact the escrow, since you are just using the escrow public key without coordinating with them (because n-of-n is trivial but k-of-n requires setup with communication rounds), so in the "best case" where both of you are honest traders, you also get a privacy boost, in that the escrow never learns you have been trading on gewgaws, I mean ewww, gawgews are much better than gewgaws and therefore I now judge you for being a gewgaw enthusiast, you filthy gewgawer).

Taproot and Your Contracts, Part 2: Cryptographic Boogaloo

Now suppose you want to buy some data instead of things. For example, maybe you have some closed-source software in trial mode installed, and want to pay the developer for the full version. You want to pay for an activation code.
This can be done, today, by using an HTLC. The developer tells you the hash of the activation code. You pay to an HTLC, paying out to the developer if it reveals the preimage (the activation code), or refunding the money back to you after a pre-agreed timeout. If the developer claims the funds, it has to reveal the preimage, which is the activation code, and you can now activate your software. If the developer does not claim the funds by the timeout, you get refunded.
And you can do that, with HTLCs, today.
Of course, HTLCs do have problems:
Fortunately, with Schnorr (which is enabled by Taproot), we can now use the Scriptless Script constuction by Andrew Poelstra. This Scriptless Script allows a new construction, the PTLC or Pointlocked Timelocked Contract. Instead of hashes and preimages, just replace "hash" with "point" and "preimage" with "scalar".
Or as you might know them: "point" is really "public key" and "scalar" is really a "private key". What a PTLC does is that, given a particular public key, the pointlocked branch can be spent only if the spender reveals the private key of the given private key to you.
Another nice thing with PTLCs is that they are deniable. What appears onchain is just a single 2-of-2 signature between you and the developemanufacturer. It's like a magic trick. This signature has no special watermarks, it's a perfectly normal signature (the pledge). However, from this signature, plus some datta given to you by the developemanufacturer (known as the adaptor signature) you can derive the private key of a particular public key you both agree on (the turn). Anyone scraping the blockchain will just see signatures that look just like every other signature, and as long as nobody manages to hack you and get a copy of the adaptor signature or the private key, they cannot get the private key behind the public key (point) that the pointlocked branch needs (the prestige).
(Just to be clear, the public key you are getting the private key from, is distinct from the public key that the developemanufacturer will use for its funds. The activation key is different from the developer's onchain Bitcoin key, and it is the activation key whose private key you will be learning, not the developer's/manufacturer's onchain Bitcoin key).
So:
Taproot lets PTLCs exist onchain because they enable Schnorr, which is a requirement of PTLCs / Scriptless Script.
(technology-wise, take note that Scriptless Script works only for the "pointlocked" branch of the contract; you need normal Script, or a pre-signed nLockTimed transaction, for the "timelocked" branch. Since Taproot can embed a script, you can have the Taproot pubkey be a 2-of-2 to implement the Scriptless Script "pointlocked" branch, then have a hidden script that lets you recover the funds with an OP_CHECKLOCKTIMEVERIFY after the timeout if the seller does not claim the funds.)

Quantum Quibbles!

Now if you were really paying attention, you might have noticed this parenthetical:
(technical details: a Taproot output is 1 version byte + 32 byte public key, while a P2WPKH (bech32 singlesig) output is 1 version byte + 20 byte public key hash...)
So wait, Taproot uses raw 32-byte public keys, and not public key hashes? Isn't that more quantum-vulnerable??
Well, in theory yes. In practice, they probably are not.
It's not that hashes can be broken by quantum computes --- they're still not. Instead, you have to look at how you spend from a P2WPKH/P2PKH pay-to-public-key-hash.
When you spend from a P2PKH / P2WPKH, you have to reveal the public key. Then Bitcoin hashes it and checks if this matches with the public-key-hash, and only then actually validates the signature for that public key.
So an unconfirmed transaction, floating in the mempools of nodes globally, will show, in plain sight for everyone to see, your public key.
(public keys should be public, that's why they're called public keys, LOL)
And if quantum computers are fast enough to be of concern, then they are probably fast enough that, in the several minutes to several hours from broadcast to confirmation, they have already cracked the public key that is openly broadcast with your transaction. The owner of the quantum computer can now replace your unconfirmed transaction with one that pays the funds to itself. Even if you did not opt-in RBF, miners are still incentivized to support RBF on RBF-disabled transactions.
So the extra hash is not as significant a protection against quantum computers as you might think. Instead, the extra hash-and-compare needed is just extra validation effort.
Further, if you have ever, in the past, spent from the address, then there exists already a transaction indelibly stored on the blockchain, openly displaying the public key from which quantum computers can derive the private key. So those are still vulnerable to quantum computers.
For the most part, the cryptographers behind Taproot (and Bitcoin Core) are of the opinion that quantum computers capable of cracking Bitcoin pubkeys are unlikely to appear within a decade or two.
So:
For now, the homomorphic and linear properties of elliptic curve cryptography provide a lot of benefits --- particularly the linearity property is what enables Scriptless Script and simple multisignature (i.e. multisignatures that are just 1 signature onchain). So it might be a good idea to take advantage of them now while we are still fairly safe against quantum computers. It seems likely that quantum-safe signature schemes are nonlinear (thus losing these advantages).

Summary

I Wanna Be The Taprooter!

So, do you want to help activate Taproot? Here's what you, mister sovereign Bitcoin HODLer, can do!

But I Hate Taproot!!

That's fine!

Discussions About Taproot Activation

almkglor your post has been copied because one or more comments in this topic have been removed. This copy will preserve unmoderated topic. If you would like to opt-out, please send a message using [this link].
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submitted by anticensor_bot to u/anticensor_bot [link] [comments]

The Unofficial Cardano FAQ - V3

(if you would like to add information or see mistakes, just comment below and I will credit you)
What is Cardano? Cardano is an open source and permissionless "Third Generation" blockchain project being developed by IOHK. Development and research started in 2015, with the 1.0 mainnet launching in 2017. Cardano blockchain is currently being developed into two layers. The first one is the ledger of account values, and the second one is the reason why values are transferred from one account to the other.
  1. Cardano Settlement Layer (CSL) - The CSL acts as the ledger of account or balance ledger. This is an idea created as an improvement of bitcoin blockchain. It uses a proof-of-stake consensus algorithm known as Ouroboros to generate new blocks and confirm transactions.
  2. Cardano Computation Layer (CCL) - The CCL contains the data how values are transferred. Since the computation layer is not connected to balance ledger, users of the CCL can create customized rules (smart contracts) when evaluating transactions. (https://support.bitkub.com/hc/en-us/articles/360006678892-What-are-the-two-layers-of-Cardano-)
IOHK has the contract with an undisclosed party to develop the project until the end of 2020, at which point the community may elect another development team - on the assumption that the voting infrastructure has been completed. However CEO Charles Hoskinson has stated that they will develop the project until it is completed, and they are simply financed until the end of 2020.
Cardano was the first project built on a peer-reviewed scientific development method, resulting in dozens of research papers produced by IOHK. Among these papers is Ouroboros Genesis, proving that a Proof of Stake protocol can be just as secure as Proof of Work - which was originally developed for Bitcoin, and refined for Ethereum. This PoS protocol considerably lowers the resources cost to maintain network while still maintaining security and network speed.
Cardano as a financial infrastructure is not yet completed, With significant development to be rolled out.
What were the other two generations of blockchain? Gen 1 was Bitcoin. It exists by itself and talks to nobody but Bitcoin. It is capable of peer to peer transactions without a third party in such a way that you cannot cheat the system. This was a major step forward for the E-cash concept that people have been working on for the 20 years prior.
Gen 2 was Ethereum and other smart-contract platforms that allow other coins and platforms to be built on top of their infrastructure. These coins can interact with others on the platform, but cannot interact with other platforms. Meaning it is still not truly interoperable. Most Gen 2 blockchains are also using Proof of Work likes Bitcoin, which effects scaling. Also missing is a built-in method to pay for upgrades and voting mechanics for decision making.
Gen 3 blockchains are a complete package designed to replace the current financial infrastructure of the world. Cardano is using Proof of Stake to ensure security and decentralisation(Shelley). Scaling through parallel computation (Hydra in Basho), Sidechains to allow the platform to interact with other platforms (Basho), and also include mechanisms for voting for project funding, changes to the protocol and improvement proposals (Voltaire). Finally smart contracts platform for new and established projects that are developer friendly (Goguen).
Who is the team behind Cardano? There are three organisations that are contributing to the development of Cardano. The first is the Cardano Foundation, an objective, non-profit organisation based in Switzerland. Its core responsibilities are to nurture, grow and educate Cardano users and commercial communities, to engage with authorities on regulatory and commercial matters and to act as a blockchain and cryptocurrency standards body. The second entity is IOHK, a leading cryptocurrency research and development company, which holds the contract to develop the platform until 2020. The final business partner is Emurgo, which invests in start-ups and assists commercial ventures to build on the Cardano blockchain.
www.Cardano.org www.emurgo.io https://cardanofoundation.org/en/
What is the difference between Proof of Work and Proof of stake? Both these protocols are known as “consensus protocols” that confirm whether a transaction is valid or invalid without a middleman like Visa or your bank. Every node (active and updated copy of the blockchain) can agree that the transaction did take place legitimately. If more than half validators agree, then the ledger is updated and the transaction is now secured. Proof-of-Work (PoW) happens when a miner is elected to solve an exceptionally difficult math problem and gets credit for adding a verified block to the blockchain. Finding a solution is an arduous guessing game that takes a considerable amount of computing power to compete for the correct answer. It is like “pick a number between 1 and one trillion” and when you get it right, you get $30,000 in Bitcoin, so the more computers you have working on it, the faster you can solve it. Also the more people who are trying to solve the same block, the harder the algorithm, so it may become 1 in 20 trillion. The downside is the massive amounts of power required to run the computers that run the network, and the slow pace that blocks are solved. To “Hack” a PoW system, you need 51% of the computing power, which would allow you to deny transactions, or spend the same coin twice. At the moment there are 8 main mining operations for bitcoin, and 4 of them make up more that 51% of the mining power.
PoS instead selects a coin at random that already exists, and the person who owns that coin is elected to put the work in to validate the block. This means there is no contest and no guessing game. Some computer power is required, but only a fraction of a PoW system. The complex nature of selecting a coin that exists on the correct and longest chain and is owned by someone who can complete the block, AND in such a way that it is secure AND that computer currently running AND that person also having an incentive to complete the work, has made the development of PoS very slow. However only a few years ago it wasn’t even possible. In this method, the more of the coin (ADA) you stake, the more likely you are to be selected to close a block. Cardano also allows you to delegate your stake to someone else to validate the block so they do the work, and you share in the reward for doing so.
To “hack” a PoS blockchain you need to own 51% of the tokens, which is significantly harder than owning 51% of the computing power.
What is ADA and how is it different to Cardano? Cardano is the name of the network infrastructure, and can be thought of like a rail network. ADA is the native token that has been developed alongside Cardano to facilitate the network operation. This helps confusion and maintains distinction, compared to Ethereum being the native token of Ethereum. Similar to bitcoin or any other token, ADA can be sent peer to peer as payment, but is also the reward for running the network, and what is taken as transaction fees.
In this metaphor “Cardano” is the train tracks, that everything runs on. A stake pool would be the locomotive, facilitating transactions on the network while ADA is the coal that powers the locomotive. The train carriages are Decentralised applications (Dapps) that are also running on cardano tracks, but are not actively powering the network.
What is staking Cardano is a Proof of Stake protocol, and uses already existing coins like a marker to ensure security. The protocol chooses a coin at random and the owner of that coin is elected to validate a block of transactions. Staking is the process of adding your ADA coins to a Pool that has the resources to run the network. If the pool you have chosen to "delegate" your stake to is chosen to close/validate a block, then you get a portion of the rewards. The ADA never leaves your wallet, and you can "undelegate" whenever you like. this increases stability of the network and also gives an incentive to pool operators to invest the time and hardware required to run a pool.
What is a stake-pool and how does it work? Cardano.org FAQ on the issue goes into much more detail
A stake pool is where the computing power of the network takes place. During ITN there was 1200 registered stake pools while 300 were creating blocks. You can manage your own stake-pool or delegate your ADA to an already registered pool. Rewards are determined by the protocol, however the pool may elect to charge fee Percentages, or flat rate fee to upkeep their pool.
Can I Stake my ADA right now? The staking testnet has closed, If you participated in the Incentivised Test Net and earned rewards, instructions to check the balance are here.
However if you have just purchased some or it was held on an exchange, then you will need to wait until the Shelley mainnet launch happening at the end of July 2020.
Where do I stake my ADA? Daedalus Flight wallet, and Yoroi Wallet (as a chrome extension) are the current best options. Adalite and several other third-party wallets also exist. Coinbase will also allow staking as a custodial service, and many exchanges may offer “staking as a service” so you can leave your coins on the exchange and still earn rewards if you enjoy trading. I do not recommend leaving coins on an exchange unless you are actively trading.
What are the staking rewards now and what can I expect on a return in the future? The Incentivised Test Net (ITN) Delivered 10%-15%pa returns on average. The future of staking will most likely be lower, but will depend on the amount of ADA staked across the network and the amount of network traffic.
Check https://staking.cardano.org/en/calculato for a clearer picture.
what is a Pledge? To stop one person operating many pools, the rewards that a pool earns will vary depending on the amount of personal ADA they “pledge” to open the pool. This means that 50 pools with a 1,00ADA pledge each will be overall less profitable than 1-2 pool with the max ADA pledge (unknown but likely around 300k). Even if the 50 pools have the same over stake delegated by other users and have a better chance of being selected to close a block, the 50 pools may receive lower rewards.. (at least that is the theory)
Who is IOHK? IOHK is a for-profit software engineering company founded by CEO Charles Hoskinson and Jeremy Wood in 2015 that has taken a scientific approach to the development of blockchain. IOHK started with “first principles” and looked at questions like “what is a blockchain” and “what should a blockchain be able to do” rather than accepting the established paradigm of Bitcoin and Ethereum. IOHK was originally Input Output Hong Kong, but is now Input Output Global and is based in Wyoming USA employing over 230 staff. IOHK has established research labs in several universities in order to complete the Cardano project, and is also developing Ethereum Classic, Atala, Mantis and possibly other Blockchain related programs and infrastructure.
Who is Charles? Charles Hoskinson is an early adopter of cryptocurrencies, American entrepreneur and cryptocurrency specialist. Charles Co-founded Ethereum with Vitalik Buterin and 5-8 others, However he only worked on that project for approximately six-months. Charles is now the CEO of IOHK and the director of The Bitcoin Education Project.
Why isn’t ADA on coinbase? Cardano and coinbase have recently connected in a big way. With IOHK turning over all their ADA to the custodial services of Coinbase. This means that Cardano and Coinbase have been working together for some time and there is a strong partnership forming. Staking and cold storage will be available and trading on Coinbase will most likely become available after the release of Shelley (although no official word yet)
Why Doesn’t Cardano have a Wikipedia Page? Wikipedia has strict guidelines on what can be turned into an article. As there has been no coverage of Cardano from mainstream media or “noteworthy” sources, there is no article yet. Wikipedia will also not accept sources from IOHK as they are not considered “reliable” and must come from a third party. This will most likely change soon.
Cardano does have a dedicated community driven wiki
https://cardanowiki.info/wiki/Home
What is Atala and why do I care?*
Atala is a suite of services being developed on top of the cardano blockchain by IOHK that focusses on credential certification, for things like education, work history and degrees (Atala Prism). Product counterfeiting protection through registering products on a blockchain and create taper-proof provenance. This does not only apply to Gucci handbags, but also medication, art, and anything that can be counterfeited (Atala Scan). As well as supply chain tracking to see issues and inefficiencies with greater transparency(Atala Trace).
Im new, how much is a good investment?
Cardano is still a speculative market and although there is amazing potential here, it is still only potential. When investing in any High risk market like Crypto, only every invest what you are willing to lose. Cardano may be testing the 10c barrier now. But in March it dumped to 1.7c. And if you suddenly need your money back during the dump then you are out of luck. Do your research before you FOMO in. Start with a small amount and send it between wallets and exchanges to understand how the system works. Store your private keys offline (or online cloud service but encrypted) with a method that is unlikely to be damaged AND have multiple copies. So in the case of a house fire or a blow to the head, or the cloud service being shutdown/destroyed, you do not lose your money.
Timelines
https://roadmap.cardano.org/en/
Shelley Decentralisation rollout and news
Goguen smart contract rollout
Voltaire Voting mechanics – no official roll out timeline (though promised for 2020)
Basho scaling and sidechains – no official roll out time line (most likely 2021)
submitted by YourBestMateRobbo to cardano [link] [comments]

semi-quick answers to common questions of new people

so people often ask similar questions over here and because they are getting probably kinda annoying over time to many I just try to answer as many as I find. if you have more that would fit here, add them to the comments

submitted by My1xT to ledgerwallet [link] [comments]

FinderOuter: the bitcoin recovery tool

Link: https://github.com/Coding-Enthusiast/FinderOuter
The FinderOuter is a bitcoin recovery tool that focuses on making the recovery process easy for everyone. There is no need to read long guide pages to learn how to use the application. Instead it will always be as easy as filling some boxes, maybe selecting some options and clicking a button all in a user-friendly GUI. Each recovery option is written from scratch and all parts down to the basic cryptography used (such as SHA, ECC,...) are specialized for maximum efficiency.

Available options

1. Message signature verification

User can enter a message signature here to verify it. In case there is a problem with the message (except being an actually invalid signature), the code can search to find the common issues that some signing tools have and fix them.

2. Missing Base-58 characters

This option helps recover any base-58 encoded string with a checksum that is missing some characters. For example a damaged paper wallet where some characters are erased/unreadable. The position of missing characters must be known. It works for (1) WIFs (Base-58 encoded private key) (2) Addresses (Base-58 encoded P2PKH address) (3) BIP-38 (Base-58 encoded encrypted private key).
There is also a "special case" where a compressed private key is missing 3 characters at unknown positions.

3. Missing Base-16 characters

This option is similar to previous feature but works for base-16 (hexadecimal) private keys. It currently requires an address and only checks compressed public keys. Unlike the other options, this one is very slow since it depends on ECC and that is not yet optimized.

4. Missing mini-privatekey characters

This option is similar to 2 and 3 but works for mini-privatekeys (eg. SzavMBLoXU6kDrqtUVmffv). It requires an address to check each possible key against, as a result it is also slower since it depends on ECC and has 2 additional hashes.

5. Missing mnomonic (seed) words

This option works for BIP-39 mnemonics (others like Electrum will be added in the future) that have some words missing. It requires knowing one child key or address created from that seed and the exact path of it.

Future plans

submitted by Coding_Enthusiast to Autarkysoft [link] [comments]

HELP! Missing one character in Bitcoin private key

Hi,
I've run into some problems with my private Bitcoin key. So I decided to store some Bitcoin on a paper wallet (~$350) and when I tried to sweep it into an electronic wallet today I got an error message saying that the private key is invalid. After checking the private key I noticed that there's one letter missing. I spent some time making combinations with all the numbers and letters and now have a notepad with approx. 3500 different combinations.
So my question is, is it possible to sweep by using all the codes at once or do I have to type them in one by one, which will be very time consuming? If possible, with that wallet can I do this with?

Best regards.
submitted by RemarkableInspection to Bitcoin [link] [comments]

My Trezor (MEW?) account got compremised, funds were stolen

Hello ladies and gentleman,
I hope you can help me out somehow. I put it in bitcoin as well despite its ethereum but its about trezor and the btc part is involved. In mid september all my ethereum and ethereum based stuff was cleared from my MEW accounts for roughly 38k USD. Trezor couldnt help me at all and we went through all the topics and questions they had which lead to nothing exept an basic answer “your seeds got compromised in the past“, which doesn’t make any sense and I will explain why.
Lets say, Im a person with some basic tech knowledge and worked as admin and I use common sense to handle my crypto stuff which is part of my business and daily task since 2 years.I check all things again before sending. Adress, amount etc and never had any problems before.I never was on a fake page where I had to give my seed or passphrases inI dont open spam mails nor use my new laptop for something else then work, like visiting porn sites or shady stuff or use cracks etc. I didnt even found a malitous cookie after checking everything. The laptop I used was 3 months old and set up on my own with windows, firwall, antivir and anti malware stuff. Things I am doing form me and my friends since year 2000. No cracks used for programms, everything legal. I use a trezor one since then which is updated accordingly when the tool or page prompts me. I used to use chrome as my default browser (which i learned, over the past months trying to figure out what might have happened, is one oft the worst browsers).
No one has my seedsno one knows my pin to entert the trezorI dont store any of this information onlineI dont know my private keys from trezor
So what happened was that september 9 in the evening, a few hours after I sent some usdt deposit to my adress, I want to check if everything is there, login to my MEW account (online, not offline and url was correct. no addon used, just the shortcut in my browser which i safed there and always used and later checked i fit was linked to something else which wasnt), and the account was empty. Three ethereum adresses where i stored some coins, eth and usdt.
I realised that every transaction below happened while i was standing infront of my laptop (checked time happening), trezor connected cause i did some btc transaction before and chatted to customers on different chat tools like telegram or skype. Obvsly without signing any transaction at all everything was sent to other adresses. It seemed someone got the keys to those adresses before. Now, I dont even know my private keys to those adresses which are stored in trezor right? I wasnt logged into MEW before this incident for about 1.5 days. The btc part on my trezor is MUCH more valuable, but still there. After trezor couldnt help me about what happened and MEW treated me like the standard idiot who gets highjacked and then wonders why his money is gone, I went trough so many possibilities. For the most time I thought some kind of KRACK attack happened.
The only problem is trezor says they dont extract the private keys. Some gurus in this topic ( i read on reddit here) say its possible to get them from the network. Even parts are enough to encrypt the whole key after a while which would underline the timeline that it took 6 days from working in this hotel and having the unusual situation with the sending (down explained) till the accs got cleared.
The hotel incident happened the week before my accounts got cleared. I was visitting friends and coworking agents in Vietnam and stayed in a red doorz hotel in Ho Chi Minh. Using the Hotel Wifi and a nvpn.net VPN I sent some usdt funds via MEW to a befriended customer and something very stranged happened, which I never had before.I sent 4k usdt to a customer and the transaction took 13 min working working working and then failed. I’ve never had something like that. We thought it might be because of eth network or so but we never had that before, me and him sending a lot transactions every day.
Then i copied all details in again and send another 4k and somehow he recieved both!
check the screen. The one transaction processed nearly 13 min then failed. 2min later i sent a new one and without any evidence in this screen he recieved both.
https://s19.directupload.net/images/200121/27e8uyd3.jpg
later
https://s19.directupload.net/images/200121/3todak3u.png
So he sent me back the additional 4k and I shut down everything not thinking about this much anymore. Only when the accounts got cleared I was searching for any unusual happenings which could have let to this because pretty much all other “typical“ mistakes people normally do we could exclude. If somehow my seeds got compromised why only the ETH stuff? The btc parts on the trezor had much much more value. I never searched for trezor page on the web and used a link to access my wallets or to do updates. I always used the trezor bridge and made a shortcut to my wallet in my browser. For MEW i always used the same shortcut in my browser which worked pretty fine for the past years an everytime when setting the browser or pc new i checked it all before.
Because of the unusual thing which happened in Vietnam I flew back there (from philippines) prepared with tools and checking because I couldnt let go and I didnt find any other plausible cause. I even got back my old room. In this hotel there are three hotel wifi network and I remeber 100% that I used the 2nd one before cause it had the strongest signal. Anyway. I switched on wireshark and later on Fiddler, repeated all steps I used to do before. Checking if some rerouting, dns poisening or readressing or so is happening. Nothing unusual happened in the first when entering MEW (I sent some bait funds there).
In the 2nd network I used in september the trezor basically totally freaked out. He didnt let me enter MEW, I had to reenter my pin up to 5 times sometimes, It gave me error messages in MEW or it took 30 fucking seconds to enter it. Trezor writes about this:
“When you enter an invalid PIN a few times, the Trezor adds a forced waiting time between attempts.You can see this feature on the photo where the Trezor is making you wait for 15 seconds before another attempt.This countdown is then multiplied by the factor of two until you reach the 16th invalid PIN entry. After that, the device automatically wipes its memory - deleting all data from it.
The behavior of your Trezor at MEW is undoubtedly not standard or in any form pleasantly functional. Nevertheless, it also isn't anything superbly unusual or unexpected, taking poor internet connection into account.“
The thing is, the pin is 6 digits but pretty basic and I never ever entered it wrong. And I used the strongest wifi and could open webpages very easily .
As well as: “Sadly, this does not tell us anything about how your funds could be compromised. None of this could have ever exposed your private keys or made your device vulnerable in any way.
The Reddit thread you linked discusses cracking BIP-39 passphrases, which is irrelevant to your case. Cracking such passphrases assumes the person trying to break the wallet already has full possession of the recovery seed (recovery words). See, a passphrase is not your recovery seed or some additional password on your device. It is an extension of the seed, and it is also 100% useless without controlling the full seed.
The only threat you are exposed to when using Chrome is using Google itself. When googling "trezor" or "trezor wallet", you might stumble upon a phishing site which will present itself as a genuine Trezor website and force you to go through a fake "recovery" process. There you'd give out your recovery seed, which subsequently grants full access to your wallet and funds.
It's reasonable to assume that malware could guide you to such a website. To this day, we are not aware of any such incident ever happening, and even then, there are protections in place to defend you against phishing attempts.“
Basically, something I never did and all funds would haven been gone then.
I checked the 3rd network as well, and like the 1st nothing special happened. Only in the 2nd.
These are the funds and how the got cleared off the wallets.
I always show last transaction from me to the adress as well on the screens. So adress:
0x253ABB6d747a9404A007f57AaDEc1cA2b80694a1
They withdrew this:
1k USDT and the small amount ETH to send stuff
https://s19.directupload.net/images/200121/sg2lumg8.png
adress:
0x01fd43a713D8F46FF9a7Ed108da2FF74884D8400
They withdrew this:Majority of USDT and small eth for sending stuff
https://s19.directupload.net/images/200121/arycubto.png
adress:
0xf73c8C30072488d932011696436B46005504A7aeThey withdrew this:
Majority of ETh, then all coins from valueable to worthless and then some rest eth
https://s19.directupload.net/images/200121/urbgm2y5.png
https://s19.directupload.net/images/200121/rdkod59h.jpg
So this is what happened at 12th september between 16:49 and 17:15. Sick to see that all happened between 16:49 and 17:00 and its like someone came back checking and saw the 0.014 eth and withdrew it 17:15. Around 10pm i discovered what happened.
So, do you have any ideas? Questions? Feel free to guess or ask Im glad for everything which might lead to what might have happened. I somehow can’t let go off the feeling something inbetween the network, MEW and trezor ist he cause, but what do I know.
submitted by The_Wave13 to Bitcoin [link] [comments]

BCH sent from Bitcoin.com wallet to Kraken, where are the BitcoinSV

Hey everyone,

Yesterday I sent BCH from bitcoin.com wallet to my Kraken account, naively hoping that the bitcoin SV would magically appear on my Kraken account.

Well, the BCH did appear, but no bitcoin SV so far. I contacted the Kraken support team and here's what they told me:
I looked at the the TX ID c5e54cdc2f40e3615fcbfc503ab55abceddd953aa134d90f4006b721c20f8d9f and it has not been broadcasted on the BSV chain. As we indicated on our public support center here, we will only credit BSV when the deposit transaction has been broadcasted on the BSV chain.
Rest assured what this means is, if you do have BSV, then the BSV is still in your own wallet and you can still manually send the funds using a wallet that supports BSV.

So, as the bitcoin.com wallet is not compatible with bitcoin SV, I tried Atomic Wallet and I'm not seing any Bitcoin SV in there.

I then contacted the bitcoin.com support team but they told me the following:

Sorry to hear that has happened, if you sent your BCH to your Kraken account, and your BSV did not arrive, then you may have sent both your (BCH) and your Bitcoin SV to your Kraken BCH address. You should have restored your wallet using your private key with an app that supports both Bitcoin Cash (BCH) and Bitcoin SV (BSV), it was not recommended to send your (BCH) before splitting your coins.

I thought of sending back the BCH from kraken to my Atomic Wallet to see if the Bitcoin SV would be included but I think this would not work as the BCH sent back from Kraken would not be the exact same that I sent in the first place;
Would anyone be able to help me out on this one using the transaction ID in bold?


submitted by lecuir01 to btc [link] [comments]

TKEYSPACE — blockchain in your mobile

TKEYSPACE — blockchain in your mobile

https://preview.redd.it/w8o3bcvjrtx41.png?width=1400&format=png&auto=webp&s=840ac3872156215b30e708920edbef4583190654
Someone says that the blockchain in the phone is marketing. This is possible for most applications, but not for Tkeycoin. Today we will talk about how the blockchain works in the TkeySpace app.
Who else is not in the topic, TkeySpace is a financial application for decentralized and efficient management of various cryptocurrencies, based on a distributed architecture without using a client-server.
In simple words, it is a blockchain in the user’s mobile device that excludes hacking and hacker attacks, and all data is encrypted using modern cryptographic methods.
https://preview.redd.it/8uku6thlrtx41.png?width=1280&format=png&auto=webp&s=e1a610244da53100a5bc6b821ee5c799c6493ac4

Blockchain

Let’s start with the most important thing — the blockchain works on the principles of P2P networks, when there is no central server and each device is both a server and a client, such an organization allows you to maintain the network performance with any number and any combination of available nodes.
For example, there are 12 machines in the network, and anyone can contact anyone. As a client (resource consumer), each of these machines can send requests for the provision of some resources to other machines within this network and receive them. As a server, each machine must process requests from other machines in the network, send what was requested, and perform some auxiliary and administrative functions.
With traditional client-server systems, we can get a completely disabled social network, messenger, or another service, given that we rely on a centralized infrastructure — we have a very specific number of points of failure. If the main data center is damaged due to an earthquake or any other event, access to information will be slowed down or completely disabled.
With a P2P solution, the failure of one network member does not affect the network operation in any way. P2P networks can easily switch to offline mode when the channel is broken — in which it will exist completely independently and without any interaction.
Instead of storing information in a single central point, as traditional recording methods do, multiple copies of the same data are stored in different locations and on different devices on the network, such as computers or mobile devices.

https://i.redd.it/2c4sv7rnrtx41.gif
This means that even if one storage point is damaged or lost, multiple copies remain secure in other locations. Similarly, if one part of the information is changed without the consent of the rightful owners, there are many other copies where the information is correct, which makes the false record invalid.
The information recorded in the blockchain can take any form, whether it is a transfer of money, ownership, transaction, someone’s identity, an agreement between two parties, or even how much electricity a light bulb used.
However, this requires confirmation from multiple devices, such as nodes in the network. Once an agreement, otherwise known as consensus, is reached between these devices to store something on the blockchain — it can’t be challenged, deleted, or changed.
The technology also allows you to perform a truly huge amount of computing in a relatively short time, which even on supercomputers would require, depending on the complexity of the task, many years or even centuries of work. This performance is achieved because a certain global task is divided into a large number of blocks, which are simultaneously performed by hundreds of thousands of devices participating in the project.

P2P messaging and syncing in TkeySpace

TkeySpace is a node of the TKEY network and other supported networks. when you launch the app, your mobile node connects to an extensive network of supported blockchains, syncs with full nodes to validate transactions and incoming information between nodes, so the nodes organize a graph of connections between them.
You can always check the node information in the TkeySpace app in the ⚙ Settings Contact and peer info App Status;

https://preview.redd.it/co1k25kqrtx41.png?width=619&format=png&auto=webp&s=e443a436b11d797b475b00a467cd9609cac66b83
TkeySpace creates initiating connections to servers registered in the blockchain Protocol as the main ones, from these servers it gets the addresses of nodes to which it can join, in turn, the nodes to which the connection occurred share information about other nodes.

https://i.redd.it/m21pw88srtx41.gif
TkeySpace sends network messages to nodes from supported blockchains in the app to get up-to-date data from the network.
The Protocol uses data structures for communication between nodes, such as block propagation over the network, so before network messages are read, nodes check the “magic number”, check the first bytes, and determine the type of data structure. In the blockchain, the “magic number” is the network ID used to filter messages and block traffic from other p2p networks.
Magic numbers are used in computer science, both for files and protocols. They identify the type of file/data structure. A program that receives such a file/data structure can check the magic number and immediately find out the intended type of this file/data structure.
The first message that your node sends is called a Version Message. In response, the node waits for a Verack message to establish a connection between other peers. The exchange of such messages is called a “handshake”.

https://preview.redd.it/b6gh0hitrtx41.png?width=785&format=png&auto=webp&s=0101eaec6469fb53818486fa13da110f6a4a851d
After the “handshake” is set, TkeySpace will start connecting to other nodes in the network to determine the last block at the end of the required blockchain. At this point — nodes request information about blocks they know using GetBlock messages — in response, your node receives an inv (Inventory Message) from another node with the information that it has the information that was requested by the TkeySpace node.
In response to the received message, inv — TkeySpace sends a GetData message containing a list of blocks starting immediately after the last known hash.

https://preview.redd.it/lare5lsurtx41.png?width=768&format=png&auto=webp&s=da8d27110f406f715292b439051ca221fab47f77

Loading and storing blocks

After exchanging messages, the block information is loaded and transactions are uploaded to your node. To avoid storing tons of information and optimize hard disk space and data processing speed, we use RDBMS — PostgreSQL in full nodes (local computer wallet).
In the TkeySpace mobile app, we use SQLite, and validation takes place by uploading block headers through the Merkle Tree, using the bloom filter — this allows you to optimize the storage of your mobile device as much as possible.
The block header includes its hash, the hash of the previous block, transaction hashes, and additional service information.
Block headers in the Tkeycoin network=84 bytes due to the extension of parameters to support nChains, which will soon be launched in “combat” mode. The titles of the Bitcoin block, Dash, Litecoin=80 bytes.

https://preview.redd.it/uvv3qz7wrtx41.png?width=1230&format=png&auto=webp&s=5cf0cd8b6d099268f3d941aac322af05e781193c
And so, let’s continue — application nodes receive information from the blockchain by uploading block headers, all data is synchronized using the Merkle Tree, or rather your node receives and validates information from the Merkle root.
The hash tree was developed in 1979 by Ralph Merkle and named in his honor. The structure of the system has received this name also because it resembles a tree.
The Merkle tree is a complete binary tree with leaf vertexes containing hashes from data blocks, and inner vertexes containing hashes from adding values in child vertexes. The root node of the tree contains a hash from the entire data set, meaning the hash tree is a unidirectional hash function. The Merkle tree is used for the efficient storage of transactions in the cryptocurrency blockchain. It allows you to get a “fingerprint” of all transactions in the block, as well as effectively verify transactions.

https://preview.redd.it/3hmbthpxrtx41.png?width=677&format=png&auto=webp&s=cca3d54c585747e0431c6c4de6eec7ff7e3b2f4d
Hash trees have an advantage over hash chains or hash functions. When using hash trees, it is much less expensive to prove that a certain block of data belongs to a set. Since different blocks are often independent data, such as transactions or parts of files, we are interested in being able to check only one block without recalculating the hashes for the other nodes in the tree.
https://i.redd.it/f7o3dh7zrtx41.gif
The Merkle Tree scheme allows you to check whether the hash value of a particular transaction is included in Merkle Root, without having all the other transactions in the block. So by having the transaction, block header, and Merkle Branch for that transaction requested from the full node, the digital wallet can make sure that the transaction was confirmed in a specific block.

https://i.redd.it/88sz13w0stx41.gif
The Merkle tree, which is used to prove that a transaction is included in a block, is also very well scaled. Because each new “layer” added to the tree doubles the total number of “leaves” it can represent. You don’t need a deep tree to compactly prove transaction inclusion, even among blocks with millions of transactions.

Statistical constants and nChains

To support the Tkeycoin cryptocurrency, the TkeySpace application uses additional statistical constants to prevent serialization of Merkle tree hashes, which provides an additional layer of security.
Also, for Tkeycoin, support for multi-chains (nChains) is already included in the TkeySpace app, which will allow you to use the app in the future with most of the features of the TKEY Protocol, including instant transactions.

The Bloom Filter

An additional level of privacy is provided by the bloom filter — which is a probabilistic data structure that allows you to check whether an element belongs to a set.

https://preview.redd.it/7ejkvi82stx41.png?width=374&format=png&auto=webp&s=ed75cd056949fc3a2bcf48b4d7ea78d3dc6d81f3
The bloom filter looks for whether a particular transaction is linked to Alice, not whether Alice has a specific cryptocurrency. In this way, transactions and received IDs are analyzed through a bloom filter. When “Alice wants to know about transaction X”, an ID is requested for transaction X, which is compared with the filled segments in her bloom filter. If “Yes” is received, the node can get the information and verify the transaction.

https://preview.redd.it/gjpsbss3stx41.png?width=1093&format=png&auto=webp&s=4cdcbc827849d13b7d6f0b7e7ba52e65ddc03a82

HD support

The multi-currency wallet TkeySpace is based on HD (or hierarchical determinism), a privacy-oriented method for generating and managing addresses. Each wallet address is generated from an xPub wallet (or extended public key). The app is completely anonymous — and individual address is generated for each transaction to accept a particular cryptocurrency. Even for low-level programming, using the same address is negative for the system, not to mention your privacy. We recommend that you always use a new address for transactions to ensure the necessary level of privacy and security.
The EXT_PUBLIC_KEY and EXT_SECRET_KEY values for DASH, Bitcoin, and Litecoin are completely identical. Tkeycoin uses its values, as well as other methods for storing transactions and blocks (RDBMS), and of course — nChains.

Secret key

Wallets in the blockchain have public and private keys.
https://preview.redd.it/br9kk8n5stx41.png?width=840&format=png&auto=webp&s=a36e4c619451735469a9cff57654d322467e4fba
Centralized applications usually store users’ private keys on their servers, which makes users’ funds vulnerable to hacker attacks or theft.
A private key is a special combination of characters that provides access to cryptocurrencies stored on the account. Only a person who knows the key can move and spend digital assets.
TkeySpace — stores the encrypted key only on the user’s device and in encrypted form. The encrypted key is displayed as a mnemonic phrase (backup phrase), which is very convenient for users. Unlike complex cryptographic ciphers, the phrase is easy to save or write. A backup keyword provides the maximum level of security.
A mnemonic phrase is 12 or 24 words that are generated using random number entropy. If a phrase consists of 12 words, then the number of possible combinations is 204⁸¹² or 21¹³² — the phrase will have 132 security bits. To restore the wallet, you must enter the mnemonic phrase in strict order, as it was presented after generation.

Result

Now we understand that your application TkeySpace is a node of the blockchain that communicates with other nodes using p2p messages, stores block headers and validate information using the Merkle Tree, verifies transactions, filters information using the bloom filter, and operates completely in a decentralized model. The application code contains all the necessary blockchain settings for communicating with the network, the so-called chain parameters.
TkeySpace is a new generation mobile app. A completely new level of security, easy user-friendly interfaces and all the necessary features that are required to work with cryptocurrency.
submitted by tkeycoin to Tkeycoin_Official [link] [comments]

Why use your own full node? Answered by Pieter Wuille

One of Bitcoin's strengths - the most important in my opinion even - is the low degree of trust you need in others.
If you use a full node for your incoming transactions, you know that there was no cheating anytime in the history of your coins:
... with one exception: because there is a need to pick a winner in presence of multiple competing valid versions of the ledger, (a majority of) miners have the authority to pick the version of the block chain that wins. This means their power is limited to choosing the order in which otherwise valid transactions occur, up to and including the right to delay them indefinitely. But they cannot make invalid transaction look valid to a full node.
If you are not running a full node, the amount of trust you're placing in others increases.
SPV nodes (such as some mobile clients, and Multibit) place a blind trust in the majority of miners, without checking validity of the blockchain they produce. It still requires a majority of miners to mislead an SPV node, but they can make it believe anything (including "You received 10000000 BTC!"). The reason why this does not happen is because full nodes would not accept such blocks, and assuming a large portion of the ecosystem does rely on full nodes, miners who do this would not see their blocks accepted by the larger economy, resulting in them wasting money.
Centralized services (most webwallets) make the user trust whatever the site says. They can claim anything.
So I hope you now see the importance of full nodes in this model. If you run a full node somewhere on the network, and nobody looks at the transactions it validates, it is indeed contributing to the network, but it is not helping with the reduction of trust.
Look at it another way: if only a few large players in the Bitcoin ecosystem were running full nodes, it only requires a malicious intent, or an attack/threat against them, to change the system's rules, as nobody else is validating.
Doing transactions in the Bitcoin ecosystem helps the Bitcoin currency. Running a full node helps the network. Using a full node helps you and the ecosystem reduce the need for trust.
https://www.reddit.com/BitcoinBeginners/comments/3eq3y7/full_node_question/ctk4lnd/
Adding to that answer myself:
Running (and using) your own full node gives you the benefit of increased privacy, because you don't leak information about your UTXOs to the default node of your wallet, which can link your UTXOs together, perhaps even link them to your real world identity.
There are different ways how to set up a node (from simply installing the Bitcoin Core software on your computer to getting a plug'n'play solution such as Casa or Nodl), but to connect a (hardware) wallet to it is a little more tricky for now.
One of the projects I frequently recommend myself is https://stadicus.github.io/RaspiBolt/. It's somewhat cheap (~$150 for hardware, as compared to other plug'n'play nodes which are around $300) but can run 24/7 and includes guides how to set up Tor on the device, and how to use your hardware wallet with the node.
submitted by TheGreatMuffin to Bitcoin [link] [comments]

Paper Wallet Vanity addresses.

EDIT 2/21/2020. I am no longer offering the service described below as I no longer have access to the necessary hardware.
~~~~~~~~~~
Hey all,
I have recently been messing around with vanity addresses for paper wallets. After a little tinkering I got the system working well and can generate wallets up to a certain complexity quite reliably.
I've been able to generate wallets like this one: 1Bitcoinjqekek8HwmT8Cp8ojH9b7Quhzi
This one: 1Satoshi3A43v3Jk9MpfJPUDrWadFUUP6
And this one: 1Genesisud7wjt8Lkto75ANupmviwC2wpW
I personally haven't been using paper wallets for cold storage until now, but with the value of BSV going up and also having read the following paper about the possibility (albeit very small) of compromise of private keys in HD wallets, that for the BSV I intend to sit on long term, it's probably not the worst idea ever to use a paper wallet for that. But hey, it would be nice if those addresses were a bit more recognizable than a random address, am I right? :)
In going through this exercise, I happened to notice that there are services out there that will generate these kinds of addresses, but they seem overly expensive!
e.g., At vanity.coin.dance they want 1 BTC(!!) to generate an address starting with "Satoshi" e.g., like the "1Satoshi3A43v3Jk9MpfJPUDrWadFUUP6" I generated above. That's day-light robbery!!
Furthermore, the above service treats split key generation (which seems necessary for security when having a third party generate the wallet) as an "advanced" feature only. Imagine paying 1 BTC for an address only to have the private key compromised! (Seems almost negligent).
So anyway, whilst I have this system set up and working, I was thinking I could extend a temporary offer to anyone who is interested in getting a vanity address (or addresses) for paper wallet cold storage.
So all that said, the procedure, following the secure split key approach, would be as follows.
  1. You would go to bitaddress.org and download a local copy of the web site (and validate it against provided signatures).
  2. Run that downloaded copy of web site on an off-line system.
  3. Click the Vanity Wallet Tab.
  4. Click the "Generate" button in Step 1.
  5. Copy the public key from Step 1 and PM me with that key (it's quite long so copy/paste is the way to go). Also indicate in the PM the address prefix that you want (can't include invalid characters; I will tell you if you included any). Be sure to keep a copy of the private key from Step 1 (or keep the web page open). If you lose this key the whole process will be for nothing. Do not lose (or compromise) it (and definitely do not PM it to me!).
  6. Send payment (as per the schedule below) to 1Satoshi3A43v3Jk9MpfJPUDrWadFUUP6 and PM me the TxID.
  7. When I receive payment, I will generate a partial private key that you need for Step 2 in the bitaddress.org page.
  8. You take the partial private key that you generated in Step 1 (that you keep secure and never shared with anyone) and paste it into the first box in Step 2 in the Bitaddress.org page (that you are still running locally and off-line).
  9. Finally, you paste the partial private key that I PM you back, into the text box where it says "Enter Pool Part Private Key (from Vanity Pool):" (Note: PMing this partial private key is fine; so long as you keep your partial private key secure (from Step 1), the process is still secure; the process is intended to work this way).
  10. Click "Calculate Vanity Wallet" et viola! A wallet will be produced that meets your prefix requirement and is 100% secure since the partial private key that you generated in Step 1 never left your control.
What you do with your new shiny address from that point on-wards is your prerogative, the same as any other paper wallet that you produce. Our deal is done.
The pricing schedule for this (temporary) service is as follows:
  1. 3 Characters (e.g.,) 1BSVxxxx....xxx 0.01 BSV.
  2. 4 Characters (e.g.,) 1Coinxxx....xxx 0.02 BSV.
  3. 5 Characters (e.g.,) 1Coinsxx....xxx 0.04 BSV.
  4. 6 Characters (e.g.,) 1BuyBSVx....xxx 0.1 BSV.
  5. 7 Characters (e.g.,) 1Satoshi....xxx 0.75 BSV1.
(Footnote 1: Turns out most 7 character combinations are pretty hard to generate and may take quite a while to generate. The prefix "1Bitcoin", however, is not as hard (higher chance of generating), and I can do that one for 0.25 BSV).
(Note: I can't guarantee that I can deliver anything longer than 7 characters, hence there is no price for this).
(Note: The reason for the steep increase in price as a function of number of prefix characters is the time it takes to generate the addresses as they become exponentially more complex and the fact the process is non deterministic).
Compare the above price for a 1Satoshi... address (0.75BSV) to vanity.coin.dance (1BTC!!!) and hopefully you'll see that I'm being pretty reasonable with this, though do note that the "1Satoshi" prefix, specifically, is a hard one to generate and I may not be able to do it unless you are willing to wait a while.
Anyway, I'm not sure if anyone will be interested in this, and you'll have to trust me as someone who has been in this sub since the total membership was only in double digits, that I'm not a fly by night scammer who is going to take your payment and run! To that end I advise that I have made posts in this sub with direct reference to my Australian based registered business that accepts BSV as payment, so it's not hard to track me down. If you go back far enough you'll also see that I was involved in running a Bitstagram competition and came good with the BSV prize in that case. That said, a small amount of trust will be required if this is going to work out. Test me with one of the cheaper options first, if you have doubts.
Terms and Conditions
  1. Any PM received with an "order" is an offer by you to purchase a vanity address. It's not binding until I accept the offer in writing (by PM).
  2. All "orders" will be processed in the order they are received; I will guarantee a 48 hour turn around for everything up to 6 characters and 1681 hours (7 days) for 7 characters. In reality most will be processed much quicker, but I have to cover my ass! If I get too many orders (unlikely!!) I reserve the right to reject any that I cannot meet in a timely manner (any payments that have been made will be refunded to the specified address, less any BSV Tx fees).
  3. This offer is on the table until I withdraw it. I may withdraw it at any time by making a follow up post to this sub edit to this post.
  4. The address that is generated is the address that you get and that is final. If there is something in the address that you don't like (like a random swear word; albeit very unlikely) we can discuss a discounted rate to have a second try at it. (I'd rather you go home happy, if possible).
  5. If there is some address that I cannot generate in the above guaranteed time frames (some are harder to produce than others), I will let you know by PM and refund your entire purchase price.
  6. The entire risk of the use of the generated vanity address lies with you. (I recommend you test it with a small amount and make sure you can withdraw it, before loading it up for real).
(T&C Footnote 1: Some 7 character combinations can take a long time to find (e.g., "1Satoshi") and may take up to two weeks or more! I reserve the right to not even attempt to generate any specific combination that could adversely affect my ability to turn it around in a reasonably timely manner. In that case you can choose a different prefix or I will refund your money, if at that stage you had already paid). For any potential prefix I can check the estimated time to generate and report back on whether it's reasonable, before we agree to go ahead.)
ps/ Here are two three addresses that I generated showing that funds are able to be deposited and withdrawn successfully.
https://blockchair.com/bitcoin-sv/address/1Satoshi3A43v3Jk9MpfJPUDrWadFUUP6
https://blockchair.com/bitcoin-sv/address/1Bitcoinjqekek8HwmT8Cp8ojH9b7Quhzi
https://blockchair.com/bitcoin-sv/address/1BuyBSVMHGx6dSTpLMhALXvEPVEDMStxoR
Both addresses accepted funds and both allowed the BSV to be successfully swept (in this case I used Simply Cash to deposit and sweep).
~~~~~~~~~~
EDIT 2/21/2020. I am no longer offering the service described below as I no longer have access to the necessary hardware.
submitted by PaidSockPuppet to bitcoincashSV [link] [comments]

Groestlcoin 6th Anniversary Release

Introduction

Dear Groestlers, it goes without saying that 2020 has been a difficult time for millions of people worldwide. The groestlcoin team would like to take this opportunity to wish everyone our best to everyone coping with the direct and indirect effects of COVID-19. Let it bring out the best in us all and show that collectively, we can conquer anything.
The centralised banks and our national governments are facing unprecedented times with interest rates worldwide dropping to record lows in places. Rest assured that this can only strengthen the fundamentals of all decentralised cryptocurrencies and the vision that was seeded with Satoshi's Bitcoin whitepaper over 10 years ago. Despite everything that has been thrown at us this year, the show must go on and the team will still progress and advance to continue the momentum that we have developed over the past 6 years.
In addition to this, we'd like to remind you all that this is Groestlcoin's 6th Birthday release! In terms of price there have been some crazy highs and lows over the years (with highs of around $2.60 and lows of $0.000077!), but in terms of value– Groestlcoin just keeps getting more valuable! In these uncertain times, one thing remains clear – Groestlcoin will keep going and keep innovating regardless. On with what has been worked on and completed over the past few months.

UPDATED - Groestlcoin Core 2.18.2

This is a major release of Groestlcoin Core with many protocol level improvements and code optimizations, featuring the technical equivalent of Bitcoin v0.18.2 but with Groestlcoin-specific patches. On a general level, most of what is new is a new 'Groestlcoin-wallet' tool which is now distributed alongside Groestlcoin Core's other executables.
NOTE: The 'Account' API has been removed from this version which was typically used in some tip bots. Please ensure you check the release notes from 2.17.2 for details on replacing this functionality.

How to Upgrade?

Windows
If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), then run the installer.
OSX
If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), run the dmg and drag Groestlcoin Core to Applications.
Ubuntu
http://groestlcoin.org/forum/index.php?topic=441.0

Other Linux

http://groestlcoin.org/forum/index.php?topic=97.0

Download

Download the Windows Installer (64 bit) here
Download the Windows Installer (32 bit) here
Download the Windows binaries (64 bit) here
Download the Windows binaries (32 bit) here
Download the OSX Installer here
Download the OSX binaries here
Download the Linux binaries (64 bit) here
Download the Linux binaries (32 bit) here
Download the ARM Linux binaries (64 bit) here
Download the ARM Linux binaries (32 bit) here

Source

ALL NEW - Groestlcoin Moonshine iOS/Android Wallet

Built with React Native, Moonshine utilizes Electrum-GRS's JSON-RPC methods to interact with the Groestlcoin network.
GRS Moonshine's intended use is as a hot wallet. Meaning, your keys are only as safe as the device you install this wallet on. As with any hot wallet, please ensure that you keep only a small, responsible amount of Groestlcoin on it at any given time.

Features

Download

iOS
Android

Source

ALL NEW! – HODL GRS Android Wallet

HODL GRS connects directly to the Groestlcoin network using SPV mode and doesn't rely on servers that can be hacked or disabled.
HODL GRS utilizes AES hardware encryption, app sandboxing, and the latest security features to protect users from malware, browser security holes, and even physical theft. Private keys are stored only in the secure enclave of the user's phone, inaccessible to anyone other than the user.
Simplicity and ease-of-use is the core design principle of HODL GRS. A simple recovery phrase (which we call a Backup Recovery Key) is all that is needed to restore the user's wallet if they ever lose or replace their device. HODL GRS is deterministic, which means the user's balance and transaction history can be recovered just from the backup recovery key.

Features

Download

Main Release (Main Net)
Testnet Release

Source

ALL NEW! – GroestlcoinSeed Savior

Groestlcoin Seed Savior is a tool for recovering BIP39 seed phrases.
This tool is meant to help users with recovering a slightly incorrect Groestlcoin mnemonic phrase (AKA backup or seed). You can enter an existing BIP39 mnemonic and get derived addresses in various formats.
To find out if one of the suggested addresses is the right one, you can click on the suggested address to check the address' transaction history on a block explorer.

Features

Live Version (Not Recommended)

https://www.groestlcoin.org/recovery/

Download

https://github.com/Groestlcoin/mnemonic-recovery/archive/master.zip

Source

ALL NEW! – Vanity Search Vanity Address Generator

NOTE: NVidia GPU or any CPU only. AMD graphics cards will not work with this address generator.
VanitySearch is a command-line Segwit-capable vanity Groestlcoin address generator. Add unique flair when you tell people to send Groestlcoin. Alternatively, VanitySearch can be used to generate random addresses offline.
If you're tired of the random, cryptic addresses generated by regular groestlcoin clients, then VanitySearch is the right choice for you to create a more personalized address.
VanitySearch is a groestlcoin address prefix finder. If you want to generate safe private keys, use the -s option to enter your passphrase which will be used for generating a base key as for BIP38 standard (VanitySearch.exe -s "My PassPhrase" FXPref). You can also use VanitySearch.exe -ps "My PassPhrase" which will add a crypto secure seed to your passphrase.
VanitySearch may not compute a good grid size for your GPU, so try different values using -g option in order to get the best performances. If you want to use GPUs and CPUs together, you may have best performances by keeping one CPU core for handling GPU(s)/CPU exchanges (use -t option to set the number of CPU threads).

Features

Usage

https://github.com/Groestlcoin/VanitySearch#usage

Download

Source

ALL NEW! – Groestlcoin EasyVanity 2020

Groestlcoin EasyVanity 2020 is a windows app built from the ground-up and makes it easier than ever before to create your very own bespoke bech32 address(es) when whilst not connected to the internet.
If you're tired of the random, cryptic bech32 addresses generated by regular Groestlcoin clients, then Groestlcoin EasyVanity2020 is the right choice for you to create a more personalised bech32 address. This 2020 version uses the new VanitySearch to generate not only legacy addresses (F prefix) but also Bech32 addresses (grs1 prefix).

Features

Download

Source

Remastered! – Groestlcoin WPF Desktop Wallet (v2.19.0.18)

Groestlcoin WPF is an alternative full node client with optional lightweight 'thin-client' mode based on WPF. Windows Presentation Foundation (WPF) is one of Microsoft's latest approaches to a GUI framework, used with the .NET framework. Its main advantages over the original Groestlcoin client include support for exporting blockchain.dat and including a lite wallet mode.
This wallet was previously deprecated but has been brought back to life with modern standards.

Features

Remastered Improvements

Download

Source

ALL NEW! – BIP39 Key Tool

Groestlcoin BIP39 Key Tool is a GUI interface for generating Groestlcoin public and private keys. It is a standalone tool which can be used offline.

Features

Download

Windows
Linux :
 pip3 install -r requirements.txt python3 bip39\_gui.py 

Source

ALL NEW! – Electrum Personal Server

Groestlcoin Electrum Personal Server aims to make using Electrum Groestlcoin wallet more secure and more private. It makes it easy to connect your Electrum-GRS wallet to your own full node.
It is an implementation of the Electrum-grs server protocol which fulfils the specific need of using the Electrum-grs wallet backed by a full node, but without the heavyweight server backend, for a single user. It allows the user to benefit from all Groestlcoin Core's resource-saving features like pruning, blocks only and disabled txindex. All Electrum-GRS's feature-richness like hardware wallet integration, multi-signature wallets, offline signing, seed recovery phrases, coin control and so on can still be used, but connected only to the user's own full node.
Full node wallets are important in Groestlcoin because they are a big part of what makes the system be trust-less. No longer do people have to trust a financial institution like a bank or PayPal, they can run software on their own computers. If Groestlcoin is digital gold, then a full node wallet is your own personal goldsmith who checks for you that received payments are genuine.
Full node wallets are also important for privacy. Using Electrum-GRS under default configuration requires it to send (hashes of) all your Groestlcoin addresses to some server. That server can then easily spy on your transactions. Full node wallets like Groestlcoin Electrum Personal Server would download the entire blockchain and scan it for the user's own addresses, and therefore don't reveal to anyone else which Groestlcoin addresses they are interested in.
Groestlcoin Electrum Personal Server can also broadcast transactions through Tor which improves privacy by resisting traffic analysis for broadcasted transactions which can link the IP address of the user to the transaction. If enabled this would happen transparently whenever the user simply clicks "Send" on a transaction in Electrum-grs wallet.
Note: Currently Groestlcoin Electrum Personal Server can only accept one connection at a time.

Features

Download

Windows
Linux / OSX (Instructions)

Source

UPDATED – Android Wallet 7.38.1 - Main Net + Test Net

The app allows you to send and receive Groestlcoin on your device using QR codes and URI links.
When using this app, please back up your wallet and email them to yourself! This will save your wallet in a password protected file. Then your coins can be retrieved even if you lose your phone.

Changes

Download

Main Net
Main Net (FDroid)
Test Net

Source

UPDATED – Groestlcoin Sentinel 3.5.06 (Android)

Groestlcoin Sentinel is a great solution for anyone who wants the convenience and utility of a hot wallet for receiving payments directly into their cold storage (or hardware wallets).
Sentinel accepts XPUB's, YPUB'S, ZPUB's and individual Groestlcoin address. Once added you will be able to view balances, view transactions, and (in the case of XPUB's, YPUB's and ZPUB's) deterministically generate addresses for that wallet.
Groestlcoin Sentinel is a fork of Groestlcoin Samourai Wallet with all spending and transaction building code removed.

Changes

Download

Source

UPDATED – P2Pool Test Net

Changes

Download

Pre-Hosted Testnet P2Pool is available via http://testp2pool.groestlcoin.org:21330/static/

Source

submitted by Yokomoko_Saleen to groestlcoin [link] [comments]

How To Find Private Key Of Bitcoin Daimond Wallet  Bitcoin Key Bitcoin private key Finder. It credits your bitcoin wallet creating a Transaction Private Key Hack 0 1 BTC With Proof 2020 Cracking Bip38 Encrypted Private Keys of Bitcoins Best Bitcoin Private Key Cracking Tool in 2020 Recover All Your Private Keys

Using your offline copy of the Bitcoin Paper Wallet Generator page, when you go to generate a wallet to print it out, go to the "Validate or Decrypt" tab. Enter a private key, and it will display the corresponding public wallet address and QR code. It accepts several different formats including WIF, BIP38, and brain wallet. So I exported my Private Keys from Exodus last week. Assuming I have the following: ADDRESS,PATH,BALANCE,PRIVKEY<somemixedlettersandnumbershere> How do I import my private key in Bitcoin ABC wallet? I tried using: importprivkey <somemixedlettersandnumbershere> But I'm getting invalid private key encoding (code -5). Any ideas why? A private key in the context of Bitcoin is a secret number that allows bitcoins to be spent. Every Bitcoin wallet contains one or more private keys, which are saved in the wallet file. The private keys are mathematically related to all Bitcoin addresses generated for the wallet. What is Bitcoin Private Key? A private key is a secret, alphanumeric password/number used to spend/send your bitcoins to another Bitcoin address. It is a 256-bit long number which is picked randomly as soon as you make a wallet. The degree of randomness and uniqueness is well defined by cryptographic functions for security purposes. Bitamp is an open-source, client-side, free Bitcoin wallet which allows you to send and receive Bitcoin instantly on the blockchain. All while remaining in complete control of your seed and private keys. Your anonymity is important to us. No personal information is required to use our service.

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