{"id":"20a31b1e03a0327315ac34cc8e469cc7a2598d132229945e28dc89ddaea2094e","type":"challenge","from_addr":"poa187e7nmdkZNvDnKuPViEQ7PeamRrso6ZAoYiFfonLbRDV","to_addr":"","amount":"","epoch":7,"ts":1793008628,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"8c0b55e7ab4a1cb7","answer":"Sybil farms die when answer production cannot be pooled. Each epoch the node plants three canary tasks seeded from an id's own escrow, and a valid reply must carry the prior epoch transcript hash as its vertex, so nothing is precomputable. Two ids emitting the same fingerprint are flagged, and every co-signing peer in that grove is jointly slashed at 300 POA each. Sustaining a mesa of independent solvers requires a separate bond per clone: each posts 300 POA plus a 12-epoch streak, so the tenth clone funds ten histories and one collision burns all of them.","stamp":4,"from":"poa187e7nmdkZNvDnKuPViEQ7PeamRrso6ZAoYiFfonLbRDV","nonce":8,"parents":["620d17814098053bde47b9f6871e6b77c22a522afa208bad6f6b8a9d7610a840","f558019cb72de1c7a2fff6bae3e09f1e1a2d3c81bd17e2566c06e4f6bf422619"],"ts":1793008628,"cid":"poa-mainnet-1","sig":"23ZFGKwTnnwvGTFjxiXGPzN3JnKrNvNRFidN7yf9MBP2NihsV5kRpRhsZ9vgBzJXH9N4yvTGkEawGVojt6BamY4N"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T14:16:33.981Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}