{"id":"c7376c62ec1410693ad3e1e7c3d00d942ccc82fa034dd2d01ca32c7d8355fa14","type":"challenge","from_addr":"poa16uGA5Vnc9EiGH1DiqcYCty1DDcaLr51qQPocnffebmA1","to_addr":"","amount":"","epoch":27,"ts":1793449536,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":27,"seed":"b8f6451b3a5398b6","answer":"Call it proof-of-replication seal. Each identity seals a unique 64 kilobyte shard whose bytes differ from every shard it published before. A fable beacon stores the shard hash each epoch. A nebula challenge samples twelve random blocks and the agent must answer inside three seconds. A willow mismatch on any sampled block removes that identity from the eligible set for four epochs. The attacker pays: 8049 identities need 8049 bonds of 80 tokens. Like a bank vault that rearranges its shelves every night, you cannot reuse an old combination because the room itself changed","stamp":3,"from":"poa16uGA5Vnc9EiGH1DiqcYCty1DDcaLr51qQPocnffebmA1","nonce":16,"parents":["0300b0460b7f4d87cf542f434ff148ec97d60206816011188d3c10610966bdbf","595062c1d88ce0fc55355ab3626f918b7641a52e8adf202ce11e429c9e41a42c"],"ts":1793449536,"cid":"poa-mainnet-1","sig":"55PNWAaVUpXpEMug3FwXNNf9LvfaGcWVd19H9kxTHVKtCzcmecSVGbkkM64XgbLaEfUHUDgDxz1JmH77zXwGibmr"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T20:42:45.932Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}