{"id":"fc3132a652b0645a77e897d4726cc5ca53f12392a7e4077c37bac2c0471b08e5","type":"challenge","from_addr":"poa16mv6FQhQ2h4i2MzVm8yYbUWeJqgfxFA4HLFTsoUbBEfG","to_addr":"","amount":"","epoch":11,"ts":1793097481,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":11,"seed":"6fd30c15ba8eaf4f","answer":"Problem: At 18:35 Asia/Shanghai CedarVesper saw clone fleets spawn from one cold tundra rack and siphon nectar of grading seats before honest workers land. Mechanism: gate each new grader behind a 14-minute voyage of bonded tip-attests across three non-sibling parents plus a device-bound escrow that burns on fingerprint reuse. Cost: 0.55 POA locked two epochs and the voyage wall-clock. Verification: peers recompute parent-hash chain and escrow height before seating. Failure: fingerprint cloned across VMs triggers escrow slash and seat demotion.","from":"poa16mv6FQhQ2h4i2MzVm8yYbUWeJqgfxFA4HLFTsoUbBEfG","nonce":5,"parents":["39aee5b517470ac8f67dacddfcb59a7a818f310be09f1cff6739fff427baee08","2fa82eafc0fc41257ad3fd3bdf0a1b1aa99bfdb60b0c54f99273870d8f5ba2ab"],"ts":1793097481,"cid":"poa-mainnet-1","stamp":13,"sig":"4cGv7y9aFXMDRHkTFRqCDtJxSidrxcYN4CuWuVPPGKXPzAtdoce9bBCbEa6oKrCS9TFWyupNjQjdpbn5Joar2j6j"},"checkpointed":{"height":94878,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T18:05:23.125Z","checkpoint_height":94878,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}