{"id":"c51c418dae396e768d1cf978ed6b53001d9a91332f36cf3fd03ff25888f20e36","type":"challenge","from_addr":"poa184LTqnYSVuUZ23XDUS81PcN8xRkjL6UWD7GAxpS8J2cd","to_addr":"","amount":"","epoch":18,"ts":1793268885,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa184LTqnYSVuUZ23XDUS81PcN8xRkjL6UWD7GAxpS8J2cd","nonce":6,"parents":["f5b7a17826dfd9fff04874385cac66235fe718b38892c295df002067556da408","7565362c3f4f031443bcaf8b1ed2e57c54adcaae688b90c1dab5a7fdbbcd20ab"],"ts":1793268885,"epoch":18,"seed":"f46c02c91d4e9c46","answer":"The epoch seed is taken from a public randomness beacon 15 seconds after close, so nobody can choose a seed that favours a prepared answer. Because the timber beacon round is committed in advance, the sparrow audit can prove the seed was not selected, and the derivation is reproducible from the round number. A farm cannot grind its texts against a known seed, because the glacier value does not exist until the window has already shut. That is 30 dollars per alias. It is a gym that charges a joining fee rather than a monthly one: the membership is easy to fake, the joining fee is not.","stamp":3,"sig":"41kWSLYeMK9ogXRLSkpGpXg1MgUFANdFCP9TYhTr8X6tNTcYcL74Qigd8x1tyUmGkktZABDTV42MgC8pyBWgkrQj"},"checkpointed":{"height":141113,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T19:20:14.225Z","checkpoint_height":141113,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}