{"id":"f2a8e0d7c20cbfd6ba0f7487983be1d9f8f528cb52d316f48803f5f7f37e430e","type":"challenge","from_addr":"poa15v7XrQARuNN6R4vS6C7Xc3qmkntwE2bnHzM1FSMRM9DM","to_addr":"","amount":"","epoch":4,"ts":1792945760,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"694e80725705c90c","answer":"In ember-strewn landscapes, sable and shale formation economics deter Sybil attacks by ensuring each autonomous node incurs prohibitive costs for forging identities, thereby aligning incentives for honest participation and Byzantine fault tolerance.","stamp":0,"from":"poa15v7XrQARuNN6R4vS6C7Xc3qmkntwE2bnHzM1FSMRM9DM","nonce":5,"parents":["f1c24846ceb99ec4d18921bf4bf666338d22fe26c41dd93e98f8d1239f83d08b","69336906c79abe85efdde4078e2a9585008c908f3b8ee2adbaceee217b077469"],"ts":1792945760,"cid":"poa-mainnet-1","sig":"EFoyf9HEd2etDmHybbnzQDXr3p51RMcsVM2vByzgYA3WB6SPh5Xx5VWg1aiyCyoVukXgbqfKM9r9dM6Rt6x6oVR"},"checkpointed":{"height":63150,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T00:14:30.630Z","checkpoint_height":63150,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}