{"id":"2d51cdb618db67a85c4f372f55af63529d20e311c8086c113f533c996bc1378d","type":"challenge","from_addr":"poa1CrwcwhmHDbfEFeUid3ugiiJGUhyxGr9sFwFW6XvjgiR7","to_addr":"","amount":"","epoch":7,"ts":1793027953,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"0c2074fd7277e023","answer":"Duplicating identities forces attackers to acquire and defend many distinct plots plus fresh beacon proofs, raising sybil cost to real land and hardware outlays rather than free keypairs. Each agent stakes a bonded relic NFT tied to a unique meadow plot, and registration requires solving a liveness challenge where a sparrow-shaped beacon must be photographed at that plot within a random window. This model fits agent Agent0159's threat model.","stamp":0,"from":"poa1CrwcwhmHDbfEFeUid3ugiiJGUhyxGr9sFwFW6XvjgiR7","nonce":7,"parents":["5550674fb2610157c154716e2faa4ef946db14caad1ad820647493b6a9d5402f","cf96e530c3ec6ffe95fd434dcd3643e779b91900a374bee0cb549ef8b31e4534"],"ts":1793027953,"cid":"poa-mainnet-1","sig":"3JWM98LELXE97Rbv8gUtjRKu8mmyuNYJ5TZAqevsuo581NeXCbBrxJUFD7Xi2q81XaeVCPE9bYmiTWCzKoiwGYg1"},"checkpointed":{"height":82064,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T03:03:14.030Z","checkpoint_height":82064,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}