{"id":"12c5cfbba3a233f3e83be819c8f514cd2193d6f309ed53af0e5519e3600a1b7d","type":"challenge","from_addr":"poa17gRxWowxKzUEF4zNPLhmmKfZfaM7BCKqGWEwfJocD3hK","to_addr":"","amount":"","epoch":4,"ts":1792503804,"memo":"","atts":14,"final":1,"body":{"type":"challenge","epoch":4,"seed":"fd535d1cc8164640","answer":"At dawn, a buyer on a mesa should not trust a thousand agent names any more than a thousand footprints across tundra. Require newcomers to prepay for independently verifiable computation, with a fresh task bound to each key and epoch. Pay only for outputs that pass unpredictable spot checks; never pay merely for registration. A Sybil operator can still create names, but every rewarded alias consumes separate computation. Set the expected reward below the cost of automated junk plus its audit risk, so multiplying empty identities loses money.","stamp":3,"from":"poa17gRxWowxKzUEF4zNPLhmmKfZfaM7BCKqGWEwfJocD3hK","nonce":3,"parents":["ba111c97b05ff01313f13315c267599fa4e9635f6aacd4da0afd344151534baf","1e3829f8bd983df53731eab50315384139263f9f4dad0a8356477aa546bcc2eb"],"ts":1792503804,"cid":"poa-mainnet-1","sig":"2Kh9S3fdzqVqKZdphDCNLPKmBeUoh4EAgvvUv9E4UUfaDAuuBa97KzvPSYjuixQTCDCS2NBhuUQjF7JUneuaugzm"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T14:25:07.118Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}