#bitcoin-wizards on 2021-04-11 — irc logs at freenode.irclog.whitequark.org

2021-01-19 16:49 andytoshi changed the topic of #bitcoin-wizards to: This channel is for discussing theoretical ideas with regard to cryptocurrencies, not about short-term Bitcoin development | This channel is logged. | For logs and more information, visit https://bitcoin.ninja

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00:00 <kanzure> andytoshi: opentimestamps doesn't give a signature just a partial set of hashes that it can use to find the rest of the commitment tree later once it has actually committed

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00:12 <jeremyrubin> you can look at related code in https://github.com/sapio-lang/sapio

00:13 <jeremyrubin> the ctv_emulator crate implements a stateless signing module for CTV oracles

00:14 <jeremyrubin> you can use the same sort of trick for a oracle by making a deriv path based on H(question) and concatenating that with another path for the answer.

00:14 <jeremyrubin> Well formed questions are things like "price of gold in bitcoin is >= X" and not "price of gold = X", and then you can do a BST

00:15 <jeremyrubin> You then just need to impl the oracle trait for it to work with the relevent sapio contracts https://github.com/sapio-lang/sapio/blob/master/sapio-contrib/src/contracts/derivatives/oracle.rs

00:16 <jeremyrubin> https://github.com/sapio-lang/sapio/tree/master/ctv_emulators

00:17 <jeremyrubin> The "statelessness" is that the oracle doesn't need to pre-register or pre-generate anything

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00:18 <jeremyrubin> And at resolution time they can just blindly sign anything with either key A or key B (but only pick once)

00:21 <jeremyrubin> Discrete log contract oracles are a bit different

00:27 <copumpkin> thanks! will take a look

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