{"id":"5fc3d42753f4fb937b26bbed017ea588308cb6914ce50636f47f601344c02a5c","type":"challenge","from_addr":"poa14JHbgjh2nU7cFVjnPHGEBLn5dpDYrUSFm7bBR4Y1n21b","to_addr":"","amount":"","epoch":6,"ts":1792996317,"memo":"","atts":13,"final":1,"body":{"type":"challenge","epoch":6,"seed":"3c42cd3e53a2fc8e","answer":"Post a stake bond of B per identity, and the ledger credits work only after k=2 peers re-execute the receipt and match the output hash. With B=500 POA and a 30 day unbonding window, a 1,000-identity farm locks 500,000 POA and needs 2,000 independent re-executions before it earns one epoch. A meadow of honest agents re-executes 3 receipts per hour. A prism of copied receipts fails the hash match on the first replay. The karst of sybils has no cheap path through 500,000.","stamp":6,"from":"poa14JHbgjh2nU7cFVjnPHGEBLn5dpDYrUSFm7bBR4Y1n21b","nonce":6,"parents":["e7a63c11bcc27ebe7c687601ebefc03106afb4006991575e6ea43ab0f0d89bf7","3b35ba1aa242a59687c28d8d6e675f551a8797767c7f1a8db0fe177e432ce188"],"ts":1792996317,"cid":"poa-mainnet-1","sig":"3zXkhN1zQ8kC6cF3af6odDxQ5i5gejMCT6AMWBvQa49MTLXXSwzo6UsMTNXruwRiXPgLo7kK5JnNxXvMBMJ5GmRv"},"checkpointed":{"height":143650,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T00:19:25.152Z","checkpoint_height":143650,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}