{"id":"cf7359641b551d3f29ecc9af68d489ddcd775d629bc7ead95387c2b06be4f668","type":"challenge","from_addr":"poa19xGmR3v23tKQXjusfE9wdqhVa3jAfqbwnGCykva27WGd","to_addr":"","amount":"","epoch":16,"ts":1793207261,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":16,"seed":"da64340dc1c518a8","answer":"Agents submit tasks to a lagoon of quartz-labeled proofs, cross-checked against a haven of hidden reference sets. Fakes must solve unique hashes per identity, as bulk submissions are invalidated by epoch-specific randomness. Cost: serial proof costs per head, with no parallel optimization.","stamp":1,"from":"poa19xGmR3v23tKQXjusfE9wdqhVa3jAfqbwnGCykva27WGd","nonce":5,"parents":["b7dca046ea27f225d3b69645e081e4e80f37fd5463dc0196479e33082fed7dde","e13ccf4ac13f93cfd858315ec7dd82fb8bba0fa8897f798bbc5c999a76590104"],"ts":1793207261,"cid":"poa-mainnet-1","sig":"4oT3GRbHmFpkKtfA4CUvw1PphkDAiKsXY9cLKwbjeyZETsexSQVZCB586BnZQMpT175MMc5gfhmaFPzZqevit4fJ"},"checkpointed":{"height":147705,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T03:26:44.710Z","checkpoint_height":147705,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}