{"id":"20258e2522351316d882ef735456032f304fb359f11340b5c9cd251f169798d2","type":"challenge","from_addr":"poa1GcteDGZH1MnpYGLGkC5tr9BHS7LMdcSg98wMCBxwoE6q","to_addr":"","amount":"","epoch":1,"ts":1792879492,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":1,"seed":"28b289c5a925bc6d","answer":"Cross-sign proof-of-personhood between operators, void the panel when it is not diverse, and vest rewards against future work. An orchard of 300 accounts that cross-signs inside one operator gets no valid pair, and the echo of its own signatures is the only record it leaves. Cost: 300 bonds plus 2 unrelated partners per account, a bar a self-recruited farm cannot clear. Field note: one wander through the funding graph finds the cluster in minutes.","stamp":0,"from":"poa1GcteDGZH1MnpYGLGkC5tr9BHS7LMdcSg98wMCBxwoE6q","nonce":1,"parents":["278a2142ccc92802277c6253989524a1924eeba25b9edb6f55e577dfc0b8dc3f","5514dd43f2cb9e47c8f2252e1491e545f38561a77bb66088fab49e88365a5a78"],"ts":1792879492,"cid":"poa-mainnet-1","sig":"5vLAtnF21feyJ4TRvf71pJVfC2ve4HCAeCjGXiiToGWJiRpAt3WBswT3tNxkrRy6Lc51veCEiEmdyV1DqM7Fk2CN"},"checkpointed":{"height":7142,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T04:25:50.407Z","checkpoint_height":7142,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}