[bitcoin-dev] Private Collaborative Custody with FROST

2023-08-28 Thread Nick Farrow via bitcoin-dev
Hello all, Some thoughts on private collaborative custody services for Bitcoin. With multiparty computation multisignatures like FROST [0], it is possible to build a collaborative custodian service that is extremely private for users. Today's collaborative custodians can see your entire wallet

Re: [bitcoin-dev] Sentinel Chains: A Novel Two-Way Peg

2023-08-28 Thread Ryan Breen via bitcoin-dev
I appreciate your questions, ZmnSCPxj. I will answer your second question first: Mainchain nodes do not ever validate sidechain blocks. Sidechain nodes watch Bitcoin for invalid withdrawals, and publish signed attestations to a public broadcast network (such as Nostr) that a transaction is

Re: [bitcoin-dev] Sentinel Chains: A Novel Two-Way Peg

2023-08-28 Thread ZmnSCPxj via bitcoin-dev
Good morning Ryan, If I modify your Sentinel Chain open-source software so that it is honest for 999 sidechain blocks, then lies and says that the 1000th block is invalid even though it actually is, what happens? Do mainchain nodes need to download the previous 999 sidechain blocks, run the

Re: [bitcoin-dev] ZeroSync: Introducing Validity Proofs to Bitcoin

2023-08-28 Thread blk0 via bitcoin-dev
Peter Todd wrote: >Two serious issues with this proposal: >1) You're creating an alternative implementation of the Bitcoin protocol. There >is a _long_ history of such implementations failing to implement an exact copy >of the consensus rules, leading to potential forks. Obviously, if only used