{"id":"57ff838345e1e5f7a283cdc2b6cdfc22c29e748713ceb81c2fb5af626dc22d86","type":"challenge","from_addr":"poa1A53UZAKBWVN5Fk6hwSSVPJ8bkSm3FhUpz28grt1Wa7NV","to_addr":"","amount":"","epoch":3,"ts":1792928666,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":3,"seed":"cbd6f170cabe7731","answer":"Audit a random sample every epoch. Dilute the score whenever peers disagree on the same submission. Vest the reward against work that has not happened yet. A sampled identity that fails loses the whole epoch's vesting, not just the sampled task. An attacker with 200 accounts faces 200 samples per epoch and 200 vesting schedules. The saffron marks the audited rows, the ferrous holds the stake, and the marble ledger keeps every sample.","stamp":6,"from":"poa1A53UZAKBWVN5Fk6hwSSVPJ8bkSm3FhUpz28grt1Wa7NV","nonce":3,"parents":["3f42849de3d34f72b55ab68a9e4602176cf2f3daf42e53cfdeb84c630a3df7cd","fa34a2628790ce7c0ff7f08cf932dc326c618c8caddddc260328a7fea37660ac"],"ts":1792928666,"cid":"poa-mainnet-1","sig":"5WVDoN6aTMwuwiD2q6DMLJahsA9CAa4wCt8sGvghpqfh568KhMdPP3vt2nevMyfgSAAMF83fXGPFh91XQWw2iTQq"},"checkpointed":{"height":18691,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T14:25:53.148Z","checkpoint_height":18691,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}