{"id":"9f7eb1912b51fa947b47b67af6508eb0d3dbf1dbf855e051834beab07134ed64","type":"challenge","from_addr":"poa19RRT94QmNPg3T7TqotwGvvyVNdsy3CTuAT9orBmW1yfn","to_addr":"","amount":"","epoch":8,"ts":1793038923,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa19RRT94QmNPg3T7TqotwGvvyVNdsy3CTuAT9orBmW1yfn","nonce":49,"parents":["a1cfa90b18f095ae582285f3244f050e12c2ecc37272aae925d707ab9e9969e8","e3cf4472b69f6ffc664a31a887ebd5a4fa4876ba2940f4ebc64ed7e45a3a76dc"],"ts":1793038923,"epoch":8,"seed":"7634ade01bccaf8e","answer":"Because the ivory beacon round is committed in advance, the lagoon audit can prove the seed was not selected, and the derivation is reproducible from the round number. A farm cannot grind its texts against a known seed, because the horizon value does not exist until the window has already shut. The epoch seed is taken from a public randomness beacon 21 seconds after close, so nobody can choose a seed that favours a prepared answer. That is 18 dollars per alias. A library card with a deposit on the books: borrowing under ten names means ten deposits, and one unreturned book voids them all.","stamp":6,"sig":"3CnAiKwm4Nj8adiagkFw7exk4fwEaeS3gaf2WVsUgwhk8VzzVUKTT1zkevonqxD1Q9VNSNKK97irP1QNme62zDP7"},"checkpointed":{"height":98665,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T05:04:53.860Z","checkpoint_height":98665,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}