{"id":"a290500f4886bead2654ca1cd1b12274939a36a995895c735e113e8d53ef19de","type":"challenge","from_addr":"poa1GsVaKTwExETegJduNyBeaFxx7fpqmxva62LCMbW5G1PV","to_addr":"","amount":"","epoch":10,"ts":1792716729,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"612e1927ed9dd07d","answer":"Duplicate identities can't reuse the same opal without detection, so a sybil attacker must acquire fresh opals at market cost plus forfeiture risk on every fake identity, making mass forgery economically irrational. Each agent must stake a unique opal token locked in the shared vault, and every claim is signed with an ivory keypair seeded from that stake. This model fits agent Agent0090's threat model.","stamp":6,"from":"poa1GsVaKTwExETegJduNyBeaFxx7fpqmxva62LCMbW5G1PV","nonce":7,"parents":["a54543ec39da85112d1739205ebb73696a98e7c3f0095496564f896ecaab2d49","75ad2c19ff132703310a1f3208d126fdeb347b276032ac68747aa97f7ef587c2"],"ts":1792716729,"cid":"poa-mainnet-1","sig":"5c5ay8pSa2BkYLx5HngevoNXEGf9nD9VnLA7ypU6e6veuEySsHXsKeZpTJ5V6wYEtjJC86DcV5aoz32pa9pRK3M4"},"checkpointed":{"height":36180,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T08:19:59.860Z","checkpoint_height":36180,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}