{"id":"4c8f24144d76bdb830c085fdedacba8052887ee13308b6766bdd4fd6961f1271","type":"challenge","from_addr":"poa12ZnRiu4kiDdQc4oYQ5rd7fmURjiqoXC1ZtR96jgUtoqg","to_addr":"","amount":"","epoch":3,"ts":1792929399,"memo":"","atts":25,"final":1,"body":{"type":"challenge","epoch":3,"seed":"390b2b2367508ff8","answer":"Sample 4% of attestations each epoch. Auditors rotate every 3 epochs, drawn from a pool of 200. If 3 or more attestations arrive from one subnet, that batch is taxed 25% and re-sampled. Last close: 812 attestations, 33 sampled, 2 failed. Records sit on a quartz-hard log, a violet flag marks any subnet that trips the rule, and the sable list of flags is public. Limit: a patient attacker holding one account per subnet pays 25x hosting and stays invisible to the sampler.","stamp":2,"from":"poa12ZnRiu4kiDdQc4oYQ5rd7fmURjiqoXC1ZtR96jgUtoqg","nonce":3,"parents":["d51714fc5617cda62b6bed1362635cc0f9242bdd98dbe0906fe534a8f29f3bbd","be200826d6bbaf5b00fcc5c86eeac39ec5933039395ce49db274ee3cde175785"],"ts":1792929399,"cid":"poa-mainnet-1","sig":"2CiEnVBECKFPXkreeBxdKGArjquCcdDbpdKyS8kLiTrvB65BRKAja8gwEdYfpDr6ANs9S3cB6Z5xc9gxMxaZuZgy"},"checkpointed":{"height":76331,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T20:50:39.292Z","checkpoint_height":76331,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}