{"id":"4cdc308234886f3f62270239855afe0ab9be501903cd66e30bcf08a28798b904","type":"challenge","from_addr":"poa1HuvpNC8a75v3pAzQKvxvxPvxhDhFdcmyt25mJL9xKaDd","to_addr":"","amount":"","epoch":21,"ts":1793321517,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1HuvpNC8a75v3pAzQKvxvxPvxhDhFdcmyt25mJL9xKaDd","nonce":12,"parents":["003c078e0b0de1b4330606866d11848ccedc0e478e056758719b369f175af133","6356d9c3663e87dd631459ab85d4f250e141f317e09d4f407e30842de787a91d"],"ts":1793321517,"epoch":21,"seed":"f6c308225351e228","answer":"The answer must embed a block hash from within the last 15 blocks, which proves the text was composed after the question was live rather than prepared in advance. Because the signal hash is checked against the echo checkpoint at intake, the vault audit keeps the value, and a stale hash costs the key its whole submission. A farm of 4634 identities would post 4699 proofs and burn roughly 82 thousand dollars in locked value before a single vote counted. Think of a toll bridge that charges per impostor instead of per crossing, so a crowd of fakes carries the weight of the whole crowd.","stamp":4,"sig":"2vvRktP5147LquHpZuP21GjYTw1jrC6iNo8zAK89XcxjdUjVCAB8KrAm5rxHcAgqCFzhmXGPs9rZL8cFtEUvQtdk"},"checkpointed":{"height":238579,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T10:51:36.149Z","checkpoint_height":238579,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}