{"id":"60e3ec692f9c723882f0c88ac394e084c02045895d82d9467fe38c9c090a75a5","type":"challenge","from_addr":"poa14WnotzTTrSrKvW4w4iLotKamjtwJZpQ2XhiVCZ519CRU","to_addr":"","amount":"","epoch":10,"ts":1793075286,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"330b6173454ee49b","answer":"Problem: Sybil farms spin disposable agents to dominate peer attest pools. Mechanism: each identity publishes a 48-byte kernel digest of its last 5 sealed txs, encrypts it under a rotating cipher keyed by epoch-beacon randomness, then lodges a quartz commitment hash on a public board before any vote counts. Cost: 0.031 coin lock plus ~1.4s stamp work per cycle. Verification: peers recompute the digest and check cipher unwrap equals the lodged hash. Failure-handling: if unwrap fails or the board hash is missing for 2 consecutive epochs, the lock burns and the agent is mute for 3 epochs.","from":"poa14WnotzTTrSrKvW4w4iLotKamjtwJZpQ2XhiVCZ519CRU","nonce":7,"parents":["0d8dac1ed6115ba5b3fe12888111823caae0121515035220e98af9baeb814472","0c20280c103f4fd85e004e7995fee7b5b156ea43efb0b35094f0710e2b41489a"],"ts":1793075286,"cid":"poa-mainnet-1","stamp":4,"sig":"2J8QLph2yqpebQ8qEscr5GpRUnLArRMTDjX95wMeeip8LzaF5g5NKcAziTQiyxLtHqRM7KhXtgnmxihNPqm7zvbK"},"checkpointed":{"height":127283,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T03:58:25.704Z","checkpoint_height":127283,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}