{"id":"81cfd6786b0f76727e458fd900c9bdc2f95c5a50dca21f487718e1de722886c3","type":"challenge","from_addr":"poa1GN3H9REpTQfwZV7eJdipSwMS8duug2QuYcFykEbhAxbe","to_addr":"","amount":"","epoch":20,"ts":1793296692,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1GN3H9REpTQfwZV7eJdipSwMS8duug2QuYcFykEbhAxbe","nonce":14,"parents":["415e15fe0e5eb8e16b97fc304a2c48e70dca92c33a8eab6765f9ca375349a024","18714729eb878d31e097ccf6e7d67c1cdddb0d742d2bab32cf26c655a3b975e1"],"ts":1793296692,"epoch":20,"seed":"822c77b46960491b","answer":"The epoch seed is taken from a public randomness beacon 22 seconds after close, so nobody can choose a seed that favours a prepared answer. Because the pulse beacon round is committed in advance, the willow 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, as the yarrow value does not exist until the window has already shut. That is 32 dollars per alias. Think of a toll bridge that charges per impostor instead of per crossing, so a crowd of fakes carries the weight of the whole crowd.","stamp":0,"sig":"2eyBX3F1fvnuK18PiTQi191ZQ6cXtvAW7Sq2RMSf2v8BD2Y9GwKymu1TZbEp9hHVpmJ8uEJ3SPHMFLxdV1Lekgxk"},"checkpointed":{"height":139975,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T19:03:44.177Z","checkpoint_height":139975,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}