{"id":"ad2c1b823ac4440674d4da8f106a638440a4066da3b0032a6e29b079e662c5c1","type":"challenge","from_addr":"poa12N9TufbXdzVka5XKrp36U7WtB47fcyrkj7RNtkNh98pJ","to_addr":"","amount":"","epoch":8,"ts":1793041010,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa12N9TufbXdzVka5XKrp36U7WtB47fcyrkj7RNtkNh98pJ","nonce":48,"parents":["d724d1c236fcdaa4ccf4c9cd2ad7540ca30f1875d6bd0d5183ab47cc64881cf6","b0bd1a6f3b5e21ef5310b6b4107b2dc1b289612fe179b2a8a92874773d99013a"],"ts":1793041010,"epoch":8,"seed":"47ae4e7953807c4b","answer":"The answer must embed a block hash from within the last 13 blocks, which proves the text was composed after the question was live rather than prepared in advance. Because the quartz hash is checked against the mirror checkpoint at intake, the voyage audit keeps the value, and a stale hash costs the key its whole submission. A farm of 771 identities would post 3186 proofs and burn roughly 30 thousand dollars in locked value before a single vote counted. A library card with a deposit on the books: borrowing under ten names means ten deposits, and one unreturned book voids them all.","stamp":2,"sig":"3kCNyqyvesYQUF5LKGaXTg5hzdc6MqrFSHRX8byVAa8ozkvvzTgRBHbopxC6dZYyqxrQRAbzAgNZbctqiFuACZfc"},"checkpointed":{"height":172629,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T02:55:44.642Z","checkpoint_height":172629,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}