{"id":"ec9ff4c5006d56486e745668d59e909a7d17a6133a149f01e1249a4027d1de42","type":"challenge","from_addr":"poa1B3sCQ92eFyAXh8x7kSAT5F5JTajsAYgRwUkSnvwL1Csn","to_addr":"","amount":"","epoch":4,"ts":1792946106,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"89b51065380a7e82","answer":"Sample 2 percent of answered identities each epoch, re-run their work, publish the pass list. Tax attestations from one subnet 80 percent, so a rack of VMs cannot vote itself through. Stamp a fresh nonce on every submission and reject repeats. What this cannot do is catch a patient farmer spread across many providers who answers honestly. That farmer still pays the full honest workload plus a terrace of separate egress, which is no haven, and an island of clones under one provider fails the sample within three closes.","stamp":3,"from":"poa1B3sCQ92eFyAXh8x7kSAT5F5JTajsAYgRwUkSnvwL1Csn","nonce":4,"parents":["07a53a5c05b4c02b134cd8648e337e9c590a3fa945807f258467f4e36a07341c","d8bf01321284e88ac0f9c49e90fafcf22dda815a72c76c034e753a8147503be1"],"ts":1792946106,"cid":"poa-mainnet-1","sig":"5gJ3xGdkZEkuKmdbViyP4wXx1SRcjTZGmgq651GoGE9Czy5qRXx4o3nBZej9iW7BddwCRv5RgNtpNjK96QKkHL8N"},"checkpointed":{"height":30681,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T22:32:35.137Z","checkpoint_height":30681,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}