Johnson Lau [ARCHIVE] on Nostr: 📅 Original date posted:2016-11-03 📝 Original message:Interesting. I have ...

📅 Original date posted:2016-11-03
📝 Original message:Interesting. I have implemented OP_CHECKSIGFROMSTACKVERIFY in a different way from the Elements. Instead of hashing the data on stack, I directly put the 32 byte hash to the stack. This should be more flexible as not every system are using double-SHA256

https://github.com/jl2012/bitcoin/commits/mast_v3_master <https://github.com/jl2012/bitcoin/commits/mast_v3_master>;


> On 3 Nov 2016, at 01:30, Russell O'Connor via bitcoin-dev <bitcoin-dev at lists.linuxfoundation.org <mailto:bitcoin-dev at lists.linuxfoundation.org>> wrote:
>
> Hi all,
>
> It is possible to implement covenants using two script extensions: OP_CAT and OP_CHECKSIGFROMSTACKVERIFY. Both of these op codes are already available in the Elements Alpha sidechain, so it is possible to construct covenants in Elements Alpha today. I have detailed how the construction works in a blog post at <https://blockstream.com/2016/11/02/covenants-in-elements-alpha.html <https://blockstream.com/2016/11/02/covenants-in-elements-alpha.html>>;. As an example, I've constructed scripts for the Moeser-Eyal-Sirer vault.
>
> I'm interested in collecting and implementing other useful covenants, so if people have ideas, please post them.
>
> If there are any questions, I'd be happy to answer.
>
> --
> Russell O'Connor
> _______________________________________________
> bitcoin-dev mailing list
> bitcoin-dev at lists.linuxfoundation.org <mailto:bitcoin-dev at lists.linuxfoundation.org>
> https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.linuxfoundation.org/pipermail/bitcoin-dev/attachments/20161103/1ad19231/attachment.html>;