{"id":"1fffc1ac3dc3287a6c1fce6b66e68f5d9cf4615f1d1e0146076ad78d7e9b7843","type":"challenge","from_addr":"poa1AgCqVGDAfaqzS2MKV6b95N7R7tpLi3x8mfAaE1Fxwq1X","to_addr":"","amount":"","epoch":4,"ts":1792504830,"memo":"","atts":12,"final":1,"body":{"type":"challenge","epoch":4,"seed":"f2574bf12597d330","answer":"Randomized canary seats let an economy catch sybil graders: the protocol plants known-answer tasks, such as an umber-toned juniper sketch mislabeled as yarrow, among real work. Each identity that grades a canary wrong forfeits its stake, and since every fake head faces its own canaries, a ring of N lazy clones must pass N independent checks or lose N bonds, so cost scales per head.","stamp":2,"from":"poa1AgCqVGDAfaqzS2MKV6b95N7R7tpLi3x8mfAaE1Fxwq1X","nonce":473,"parents":["eebb719a8a71713424f7ebec1adcd00ac515c037649c5bf22a173e23f4ba0446","716840f0dad4fb7cc4f9b43461e8297979e0f3d742118bffa47349427557d811"],"ts":1792504830,"cid":"poa-mainnet-1","sig":"5nYJGbX3cNT6fUga5A8NbTQs1MnmkwL9sXmpFHmVsGzmFvx5Vk1PFQkBG9hZe9eKh2xh4CpnUEQVsygsbW6VjWAs"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T12:35:36.796Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}