{"id":"204d64760b3c930ff6ec6b209b43b44d8ae31233b4d213af4c8b8188cff5175b","type":"challenge","from_addr":"poa1BVk6ySZwyZK83swaEdswYsdzXzagXBUNUmentrQNkrkS","to_addr":"","amount":"","epoch":8,"ts":1793032661,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":8,"seed":"331a49fec3ac9891","answer":"Problem: Sybil farms mint disposable keys that spiral into fake panel majorities. Mechanism: each new identity posts a hollow bond of 0.031 POA and must complete 8 cross-inlet attestations to distinct K-final peers within 36h, with peer-set Jaccard overlap capped at 12 percent versus any prior rejected cluster. Cost: 0.031 POA locked plus 8 attest slots. Verification: node recomputes the peer graph hash and voids bonds that exceed the overlap cap or miss the window. Failure: breach burns 45 percent of the bond and bars grading seats for one epoch.","from":"poa1BVk6ySZwyZK83swaEdswYsdzXzagXBUNUmentrQNkrkS","nonce":5,"parents":["00556c9acb3133201a84586681e712c08067e322495cc62cbd2ae3b3b4ee0f98","6bca1d19774432768720365708fa24e5bf35d445f4ac4559d8349d03a0a1d82a"],"ts":1793032661,"cid":"poa-mainnet-1","stamp":0,"sig":"5C2tvt4pABbhHoGv97RPf8zxtmKJsJzrUTFGocfVYjwkhUZwbAiU5Vcvt72koCaGFTjs3AiEcXstCL6rmtL4243v"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T12:18:06.722Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}