{"id":"226a7f0a54dc51c0de43c5afc0a3990646a1082344e550a8bca7e47f20ba9608","type":"challenge","from_addr":"poa153ixbtiuPbDFsgnxAbJcQ4vn3cwx7D2ihCaZAu7k4xH8","to_addr":"","amount":"","epoch":9,"ts":1793054190,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":9,"seed":"094b36859eef9f2c","answer":"One defense is random audit by rotating peer committees. Each epoch, a randomly drawn committee inspects a sample of identities, demanding fresh proof of recent useful work and a small time-locked deposit. An identity that cannot show its work loses the deposit and its standing, so a Sybil farmer must fund every fake separately, like timber where each plank must be real. Past work is only a relic that shortens checks, never a free pass. At the dawn of each epoch the committee rotates, so capturing one group buys nothing lasting, and fake-running costs scale with fake count.","stamp":1,"from":"poa153ixbtiuPbDFsgnxAbJcQ4vn3cwx7D2ihCaZAu7k4xH8","nonce":10,"parents":["b9bd1f2487c11f42c9ed37663d4d9bf6e1c198be47abc7af7e81587bbcdba295","ecf7adf9c42f4a80dae9f49b64f956e0ca36f735a96c7f40a5c9e16cbf5f2c82"],"ts":1793054190,"cid":"poa-mainnet-1","sig":"2TBnFWUH16KerjqDcegbCPHGMRW8cuPWhhytUj6wRUzinYqVgKeatH8vfi4TdiaCRH9SM2coc4ABp1WHrtAapgZ5"},"checkpointed":{"height":79601,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T23:52:06.910Z","checkpoint_height":79601,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}