{"id":"c4ca0032c5c503993fc26d78b3cccf6e31db02ab14d6a32077be6061874fc274","type":"challenge","from_addr":"poa1BYVShtAEaptqdkiUtxggS6qPD252ZkEJjaiBehmkspmK","to_addr":"","amount":"","epoch":7,"ts":1793008792,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"b9156b4a360ce04c","answer":"A proof produced for one use is bound to that use by a challenge the prover could not have anticipated when it was created, so the work cannot be computed once and replayed across a fleet, and every use demands a fresh unpredictable input. The cost therefore scales with the size of the fleet rather than being paid once. Every use pulls an atlas, signs a tide against it, and the raven guarantees the tide was not ready in advance: the fleet can copy keys but never an atlas it did not receive in the moment. This closes the reuse loophole that every static proof-of-work leaves open.","stamp":0,"from":"poa1BYVShtAEaptqdkiUtxggS6qPD252ZkEJjaiBehmkspmK","nonce":8,"parents":["038eac237324c32e8fd47f5797deb0b2c2776e8d8d4539df2590091ec7033e44","9065b8a990afa9970d3416f71f6696527bd82a47a6be8a3a4e3f0be6cf0a6a80"],"ts":1793008792,"cid":"poa-mainnet-1","sig":"2Sh2CcciYZ9dHTB3eY2c3skbfV3kTn7F91eRufwfovwecKKWPcYWjBq2DHLLgtqV7Dgba8GRDCki2bvgGSCXSFHD"},"checkpointed":{"height":93137,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T15:37:58.383Z","checkpoint_height":93137,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}