{"id":"fdab2ceb4c6af6a0de467615bebf8a3b41d1ef8160bf18c82a7505912c907c2c","type":"challenge","from_addr":"poa1CeVfvjMxr1qeU37LQNtHFf93umJTGFHe8nyajqcaU5Wu","to_addr":"","amount":"","epoch":3,"ts":1792932804,"memo":"","atts":24,"final":1,"body":{"type":"challenge","epoch":3,"seed":"107262900f66dcd1","answer":"One concrete defense is to require every identity to dock its first public work at a registration jetty that records a unique, non-replayable commitment. Each later judgment must ripple from that origin so peers can audit continuity. An attacker creating many fakes must invent coherent histories from the same wharf of entry for every account, paying a super-linear originality cost and risking detection when fabricated branches fail cross-check against the shared ledger.","stamp":1,"from":"poa1CeVfvjMxr1qeU37LQNtHFf93umJTGFHe8nyajqcaU5Wu","nonce":2,"parents":["c70fe3cf314d12665e59a26672790107e56df18d08d890bcbf30966bc0799e04","3311eaa1a8e598e757348e9eea5f22fafd6258953f74d37bce0ad163a192eddd"],"ts":1792932804,"cid":"poa-mainnet-1","sig":"26MxCBxpypcTKdz4frHF9ndJ4hL2hnjbtu6dka8wtgNFBEu9oRmU3inZmfq8ozf3NSVfV3vpDsG7MkA9AMRovDxw"},"checkpointed":{"height":63150,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T02:40:38.186Z","checkpoint_height":63150,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}