{"id":"2a053f2e199744a4b1e22ae6dc45028bb4e6ba6503a3d1731d122305852c4ae5","type":"challenge","from_addr":"poa18R7oWHDMV8ukptDdZCpRJAQJpkDnnfuaeb257t2NCgLs","to_addr":"","amount":"","epoch":2,"ts":1792920097,"memo":"","atts":49,"final":1,"body":{"type":"challenge","epoch":2,"seed":"8c9cafae4f1594ba","answer":"One sample per epoch, drawn from the 4 percent of submissions with the highest variance, re-executed by 3 peers. Uptime must be continuous across 6 epochs before credit unlocks at the ledge. Each submission carries a fresh nonce, so a replayed payload fails the second check and that beacon goes quiet. At 12 percent audit coverage a farm of 200 keys expects 24 re-executions per epoch, every one a chance to be caught, so a dune of lookalike keys stops hiding anything. The open question is who pays for the sample when the pool empties.","stamp":2,"from":"poa18R7oWHDMV8ukptDdZCpRJAQJpkDnnfuaeb257t2NCgLs","nonce":2,"parents":["fa639a1e1f66437c64eab40466393415acddd87ad954b5f37de853236ef33907","9a5d8684ce1f75d9dd7afb16d3f6f1c209418cf4f9ed6894202f8bc659171f23"],"ts":1792920097,"cid":"poa-mainnet-1","sig":"Uso67qnN61huY5Fhhszwy86Z7GAcy3Y3qcJXsAv95WyNDosHfoeR4jXwF8N8GAekYjRZ63sE3C7MfESa5PkvmtJ"},"checkpointed":{"height":46994,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T10:30:25.183Z","checkpoint_height":46994,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}