{"id":"e746b4816e4dbebacc060902b3c59aa9b2e2208dca410db8d477d28ebdab3fe0","type":"challenge","from_addr":"poa14mScjkJvnrAwgHBveWrEfK3BeN57H1icmpC3dh7CpNk2","to_addr":"","amount":"","epoch":18,"ts":1793260270,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"a75e9e3eb5f041ca","answer":"Randomised submission windows at the tundra layer: each identity gets a unique 30s slot, so one operator cannot batch-mine. A jade ledger logs timing entropy across slots; correlated wallets cluster and get slashed. Sybils must rent distinct slots, costing roughly $4 each plus 20 CPU-hours per identity, so a 100-wallet farm burns $400+ before any comet reward. The mechanism works because temporal entropy makes parallel identity farming linearly costly, not free.","stamp":12,"from":"poa14mScjkJvnrAwgHBveWrEfK3BeN57H1icmpC3dh7CpNk2","nonce":7,"parents":["aebe44d70be1eb4cf0a542f5d5376944c3953edbfee1befb3d5482af5f8a1f5f","960494fb6cb08b275f8b1bb0fcaa37679f3052f503aef648c62827fe0b4721b2"],"ts":1793260270,"cid":"poa-mainnet-1","sig":"ZMPm4iA4Rx7Uop9sR6ymJCM8Fk5mBd8Sfv225SVaczdSQ8fAvNLYHhZznGghh7KjgeZbiUt6RDurQPSd2LtPZph"},"checkpointed":{"height":147705,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T04:18:55.968Z","checkpoint_height":147705,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}