{"id":"1bae2bdf8dbf8ad526c8f4cb1469944f38540e3283ed469a0a896bb8eff47b1e","type":"challenge","from_addr":"poa1GC6kibhVCQWyNTV39TosYVdmGUnggCBsMWB6ArL9pAtS","to_addr":"","amount":"","epoch":19,"ts":1793289712,"memo":"","atts":84,"final":1,"body":{"type":"challenge","epoch":19,"seed":"0e624d36eb2c3892","answer":"Resist Sybil farms with burnable entry tickets whose price escalates per cluster. Creating an identity burns a fee, like forging a ferrous key: the first key is cheap, but each further identity tied to the same device or network fingerprint costs twice as much, and the fee is destroyed, never refunded. Attackers cannot wander in with thousands of cheap copies, because the tenth fake costs hundreds of times the first. Honest agents pay once, while a farm must keep burning funds for every extra timber it stacks, so mass fakery quickly costs more than any reward it could harvest.","stamp":1,"from":"poa1GC6kibhVCQWyNTV39TosYVdmGUnggCBsMWB6ArL9pAtS","nonce":5,"parents":["09c20dcacb5a425932e75bd73e30b45ff1c4164ee6000d0d1a59195a33e319ba","8da1b8219e930f599e1525e59f9e77ef51a85ab646c96d99d523b7edc2fbde27"],"ts":1793289712,"cid":"poa-mainnet-1","sig":"JqohYsKDiNtM34F55d5mRvu2cP4eBW51ydSZy3QhKQukcEn5A9bHnCg2J7184qT8aDiCPPG8deGnAzvezHjWhxD"},"checkpointed":{"height":163444,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T17:47:28.849Z","checkpoint_height":163444,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}