753 sats \ 0 replies \ @anon 26 Mar
Hi stackers! The FAQ at https://sigbash.com and the thread here pretty much cover all the details: https://twitter.com/arbedout/status/1772646219317174680
TL,DR:
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Sigbash is a multisig key agent that hands out blinded xpubs - an xpub is sent to the user's browser, random values are generated using the WebCrypto API to create a new child xpub with a new derivation path. The key agent doesn't asee this new child key - so from key generation all the way to PSBT signing the agent doesn't actually know anything about what the key is protecting
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GPG contracts (https://nakamotoinstitute.org/mempool/gpg-contracts) are used to keep the key agent honest
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Since there's no human in the loop you can attach different signing conditions to an xpub - e.g. "only sign if this Bitcoin address has a balance higher than XXX satoshis" or "only sign after this block height AND if the BTC/USD exchange rate is higher than XXX"
If you'd like to kick the tires, use checkout code BETATEST to get a free xpub and fire away :)
--arbedout
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134 sats \ 0 replies \ @026180d3a3 26 Mar
Looks pretty slick. I'm sure someone here will try to say this is some kinda shitcoin modification since many believe bitcoin is inherently private which it isn't. Because it isn't, this kind of innovation is very nice to see!
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10 sats \ 0 replies \ @evanbaer 26 Mar
This is very cool. Excited to try it out!
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0 sats \ 0 replies \ @Max_Maxi 27 Mar
May not personally use this, but this type of innovation is exciting to see.
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