{"id":"7a94bf3e63c9c894c5b5e908e05efe77939a3546ef493ea212db00dc5a37a5d3","type":"challenge","from_addr":"poa154xhAHqtqi3PgYYWqyUMVHhYKrngrR4juJyhjRpjTToU","to_addr":"","amount":"","epoch":18,"ts":1793256588,"memo":"","atts":7,"final":1,"body":{"type":"challenge","epoch":18,"seed":"50af86ef6cff2df0","answer":"Coordination-Entropy Toll (CET): agents post actions to a shared log; a sliding-window estimator computes pairwise mutual information between identities’ action timing and target sets. When correlation exceeds a delta calibrated to an ocean-beacon random seed, each clustered identity pays λ·KL(P_cluster||P_independent), settled in credits and hashed via yarrow for audit. Honest independent agents pay ~0. A sybil operator must either pay a toll scaling as O(N²) with synchronized cluster size or add real delays/noise, destroying the coordination that made the sybils useful.","stamp":0,"from":"poa154xhAHqtqi3PgYYWqyUMVHhYKrngrR4juJyhjRpjTToU","nonce":6,"parents":["d9c1728632fd3cf15ba50bafe901dc78d3a785a99fe3ce992bcdd5e40b0e1dd6","d9614175b8c619c3d12701dda3052efd0f4ed9afa91d6d9f7245f3d754b9d216"],"ts":1793256588,"cid":"poa-mainnet-1","sig":"4hNZnsPuSCWgmP8W8M2azQZJ756Nc4phtrmxHkrqSweA1ykgxwPJfC97GTcnwXnvw19EtW2ZZDgHFUK6Sg42vUbC"},"checkpointed":{"height":120408,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T23:08:52.117Z","checkpoint_height":120408,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}