Bitcoin Core 0.16.0 binaries available

[AB de Royse777]

https://bitcoin.org/bin/bitcoin-core-0.16.0/

Check the sha256sums.asc pgp yourself pls. I checked and with me the checksum was correct.

If i am correct this should have full Segwit support.

[jrian]

https://bitcoin.org/bin/bitcoin-core-0.16.0/

Check the sha256sums.asc pgp yourself pls. I checked and with me the checksum was correct.

If i am correct this should have full Segwit support.

Segwit by default, and you can choose Bech32. Will install it right now

ps. someone have to change  this news:

Code:

News: Latest stable version of Bitcoin Core: 0.15.1 (https://bitcoin.org/en/download) 

[AB de Royse777]

https://bitcoin.org/bin/bitcoin-core-0.16.0/

Check the sha256sums.asc pgp yourself pls. I checked and with me the checksum was correct.

If i am correct this should have full Segwit support.

Segwit by default, and you can choose Bech32. Will install it right now

ps. someone have to change  this news:

Code:

News: Latest stable version of Bitcoin Core: 0.15.1 (https://bitcoin.org/en/download) 

Don't know if it is a stable version yet

[jrian]

Don't know if it is a stable version yet

Its stable. Here is changes: https://bitcoin.org/en/release/v0.16.0

[cellard]

Don't know if it is a stable version yet

Its stable. Here is changes: https://bitcoin.org/en/release/v0.16.0

Don't expect the news to be updated anytime soon. Whoever is in charge of that takes a long time to update when new versions are out. Possibly mid week or even next week.

Anyone that has an old wallet.dat from early Bitcoin-qt days has tested it by the way? Any problems?

Do legacy and segwit addresses show up fine the GUI? got some screenshots to see how it looks like? I can't install it currently, im out and will not be back home for a while.

[TheQuin]

Anyone that has an old wallet.dat from early Bitcoin-qt days has tested it by the way? Any problems?

Do legacy and segwit addresses show up fine the GUI? got some screenshots to see how it looks like? I can't install it currently, im out and will not be back home for a while.

The old wallet loaded OK but it is empty so I couldn't test beyond that. To use Segwit you need a new wallet anyway so I renamed that and it made a new Segwit one automatically. Getting a new receiving address give a Segwit one start '3'. I'm still trying to work out how to get a bech32 address.

Edit: Official release thread has appeared https://bitcointalk.org/index.php?topic=3024763.0

[achow101]

To use Segwit you need a new wallet anyway

It shouldn't.

I'm still trying to work out how to get a bech32 address.

Start with (or add to your bitcoin.conf) -addresstype=bech32. Or in the Receive tab, check the "Bech32 address" checkbox and get a new address from there.

[Rath_]

This version is definitely a huge step forward. I was quite surprised when I saw news about the new version. I browsed Github some time ago and I saw a discussion where someone said that 0.16.0 was supposed to be released somewhere around May. Full SegWit support was one of the most demanded features. What a shame that BIP 173 addresses aren't default ones. I know that there might be still some compatibility issues but it could at least force exchanges, wallet providers and other services to start supporting them.

Getting a new receiving address give a Segwit one start '3'. I'm still trying to work out how to get a bech32 address.

If you still can't find it here's a picture of it.

[Forsyth Jones]

But the private keys of the segwit addresses (both P2SH and bech32) are the same as those of a legacy address when you export a private key from a segwit address in Bitcoin Core and import into Electrum, it appears that you imported a legacy address instead of segwit P2SH or bech32). Do the tests yourself

[TheQuin]

To use Segwit you need a new wallet anyway

It shouldn't.

I'm still trying to work out how to get a bech32 address.

Start with (or add to your bitcoin.conf) -addresstype=bech32. Or in the Receive tab, check the "Bech32 address" checkbox and get a new address from there.

Thanks for clearing up my misunderstanding. I just opened with my old wallet and it all works.

[achow101]

But the private keys of the segwit addresses (both P2SH and bech32) are the same as those of a legacy address when you export a private key from a segwit address in Bitcoin Core and import into Electrum, it appears that you imported a legacy address instead of segwit P2SH or bech32). Do the tests yourself

That is a known problem. Fixing it requires a new private key format because the private keys do not actually specify what kind of address you should create with them. It is important to note that private keys only create public keys, and a public key can be transformed into several different addresses now. The private key does not specify what kind of address to create from the public key.

[Carlton Banks]

But the private keys of the segwit addresses (both P2SH and bech32) are the same as those of a legacy address when you export a private key from a segwit address in Bitcoin Core and import into Electrum, it appears that you imported a legacy address instead of segwit P2SH or bech32). Do the tests yourself

That is a known problem. Fixing it requires a new private key format because the private keys do not actually specify what kind of address you should create with them. It is important to note that private keys only create public keys, and a public key can be transformed into several different addresses now. The private key does not specify what kind of address to create from the public key.

What prevents wallet software from spending from non-segwit addresses using the segwit address corresponding to a common public key?

[Forsyth Jones]

That is a known problem. Fixing it requires a new private key format because the private keys do not actually specify what kind of address you should create with them. It is important to note that private keys only create public keys, and a public key can be transformed into several different addresses now. The private key does not specify what kind of address to create from the public key.

Yes I know this, when we give the command RPC dumpwallet "destination", in the document just below the private keys, each segwit P2SH address has its redemscript but I do not know how to use it and I do not even know what the utility of that redemscript is. The Electrum wallet shows the new private format of the private keys of the segwit addresses, but no other wallet recognizes, only Electrum, if we import bitcoin-QT a bech32 private key generated in the Electrum of the error, because bitcoin-QT does not recognize the private key of bech32 address of Electrum

[cellard]

Anyone that has an old wallet.dat from early Bitcoin-qt days has tested it by the way? Any problems?

Do legacy and segwit addresses show up fine the GUI? got some screenshots to see how it looks like? I can't install it currently, im out and will not be back home for a while.

The old wallet loaded OK but it is empty so I couldn't test beyond that. To use Segwit you need a new wallet anyway so I renamed that and it made a new Segwit one automatically. Getting a new receiving address give a Segwit one start '3'. I'm still trying to work out how to get a bech32 address.

Edit: Official release thread has appeared https://bitcointalk.org/index.php?topic=3024763.0

Well I remember reading achow101 saying that if you had an old bitcoin-qt wallet.dat and opened it with 0.16 it will automatically convert it to the new format and you don't need to do anything annoying like creating an empty one and sending all of your coins over the new wallet.dat which is hell.

And also I got some coins on a bech32 electrum address, I've read I can't export it because it will not work properly... when this will be fixed?

I guess I will leave them on electrum's wallet for the time being.

Im also still paranoid about the new format. I assume the seed is impossible to see and therefore safer than electrum's hd format right?

[RGBKey]

Anyone that has an old wallet.dat from early Bitcoin-qt days has tested it by the way? Any problems?

Do legacy and segwit addresses show up fine the GUI? got some screenshots to see how it looks like? I can't install it currently, im out and will not be back home for a while.

The old wallet loaded OK but it is empty so I couldn't test beyond that. To use Segwit you need a new wallet anyway so I renamed that and it made a new Segwit one automatically. Getting a new receiving address give a Segwit one start '3'. I'm still trying to work out how to get a bech32 address.

Edit: Official release thread has appeared https://bitcointalk.org/index.php?topic=3024763.0

Well I remember reading achow101 saying that if you had an old bitcoin-qt wallet.dat and opened it with 0.16 it will automatically convert it to the new format and you don't need to do anything annoying like creating an empty one and sending all of your coins over the new wallet.dat which is hell.

And also I got some coins on a bech32 electrum address, I've read I can't export it because it will not work properly... when this will be fixed?

I guess I will leave them on electrum's wallet for the time being.

Im also still paranoid about the new format. I assume the seed is impossible to see and therefore safer than electrum's hd format right?

What do you mean "impossible to see"? The seed still has to be stored in the encrypted wallet.dat

[EcuaMobi]

I've updated my Bitcoin Core to 0.16.0 and created a few new bech32 address with the command

Code:

getnewaddress -addresstype bech32 

I've then tried to sign a message with that address but I get the error "The entered address does not refer to a key":

(Address cut in the screenshot for privacy reasons)

However, it is possible to sign and verify this kind of addresses with Electrum (as long as it's not multisign):

(Address cut in the screenshot for privacy reasons)

I can't find the official documentation regarding signing arbitrary messages with these addresses. Can anyone enlighten me?
Did electrum implement its own or an unofficial standard? Will this be supported by Core?

[TryNinja]

I can't find the official documentation regarding signing arbitrary messages with these addresses. Can anyone enlighten me?
Did electrum implement its own or an unofficial standard? Will this be supported by Core?

That's all I could find with my limited knowledge:

My doubt, regarding signing in segwit address is if this is a "bug" and will soon be corrected, or is it an abandoned feature?

It is neither a bug nor an abandoned feature. It is just that we are still working on creating a more generalized signing scheme that lets people sign with things like P2SH addresses (e.g. sign with a multisig address). There is simply no standard yet for signing with such scripts or with Segwit.

Note that you don't actually sign with an address. You sign with a public-private keypair and your wallet interprets it as an address. Your wallet could just as easily interpret it as a segwit address. We are working on creating something that actually specifies the address type, and more generally, allows signing with scripts.

[EcuaMobi]

I can't find the official documentation regarding signing arbitrary messages with these addresses. Can anyone enlighten me?
Did electrum implement its own or an unofficial standard? Will this be supported by Core?

That's all I could find with my limited knowledge:

My doubt, regarding signing in segwit address is if this is a "bug" and will soon be corrected, or is it an abandoned feature?

It is neither a bug nor an abandoned feature. It is just that we are still working on creating a more generalized signing scheme that lets people sign with things like P2SH addresses (e.g. sign with a multisig address). There is simply no standard yet for signing with such scripts or with Segwit.

Note that you don't actually sign with an address. You sign with a public-private keypair and your wallet interprets it as an address. Your wallet could just as easily interpret it as a segwit address. We are working on creating something that actually specifies the address type, and more generally, allows signing with scripts.

I hadn't seen that. Thanks.
I wonder what electrum implemented if there's no standard yet. But I see that's been asked/wondered there

[achow101]

What prevents wallet software from spending from non-segwit addresses using the segwit address corresponding to a common public key?

Nothing. Whoops, misread that question.

Yes I know this, when we give the command RPC dumpwallet "destination", in the document just below the private keys, each segwit P2SH address has its redemscript but I do not know how to use it and I do not even know what the utility of that redemscript is. The Electrum wallet shows the new private format of the private keys of the segwit addresses, but no other wallet recognizes, only Electrum, if we import bitcoin-QT a bech32 private key generated in the Electrum of the error, because bitcoin-QT does not recognize the private key of bech32 address of Electrum

You can't use it in another wallet unless they support explicitly setting a redeemScript or explicitly saying that a given private key should be used for segwit.

Interwallet compatibility with importing/exporting private keys is not very good and it never really was something that was worked on in the past. There is ongoing work to standardize a format for segwit private keys.

Well I remember reading achow101 saying that if you had an old bitcoin-qt wallet.dat and opened it with 0.16 it will automatically convert it to the new format and you don't need to do anything annoying like creating an empty one and sending all of your coins over the new wallet.dat which is hell.

No, you either misunderstand or misremember what I said. It "converts" the wallet so that it can be used for segwit, but no actual conversion happens because nothing in the wallet format needs to change. It is partially backwards compatible; if you go back to too old a version (older than 0.13.1), your wallet won't work as you expect it to.

I hadn't seen that. Thanks.
I wonder what electrum implemented if there's no standard yet. But I see that's been asked/wondered there

Electrum tends to implement their own formats for things and not get them standardized. They have implemented their own segwit private key, public key, seed, and signature format which is specific only to Electrum (the signature format might work with Trezor).

[fabianji]

https://bitcoin.org/bin/bitcoin-core-0.16.0/

Check the sha256sums.asc pgp yourself pls. I checked and with me the checksum was correct.

If i am correct this should have full Segwit support.

It does - plus a few smaller features that have been implemented like the bench32 address format and the "replace-by-fee" tag set as default.