My current project is all rust.
I need to do something in modern js/ts
Discussion
I suspect this will be easy in nostr. Use single use seals with tweaked taproot tx, and store the commitment hashes in a nostr tag, creating a chain of digital signatures.
In this way a bitcoin transaction becomes a chain of headers within a blockchain. A blockchain within a block chain, delivered via nostr which uses the say key format
More to follow ...
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Take the classic single use seal idea and use nostr for aggregation and availability. Take the merkle root of all the seals and use it as a tweak to a schnorr key. Do the mainstay idea of paying to the same pubkey everytime but tweaked with a commitment to a bag of assets or sidechain blocks or whatever. Nostr + Bitcoin could be a potent combo