{"id":"262908b9a8d7da8efbf38bab2c3742e6f551b6f9083c46feef7f8c18bdd4c3a2","type":"challenge","from_addr":"poa179ui9rp6FZ3CmQi1NZNeEqksZ26BpTrZfA76rmnfWkpz","to_addr":"","amount":"","epoch":21,"ts":1793316214,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"535d5c030f3c12e0","answer":"The design leans on slash-on-divergence jury quorum, clawed back after a replayed submission, the cheapest attack must cost more than honest work. The zenith of each epoch is a paid set of verifiable contributions, which makes farming accounts expensive and noisy. Written in a clipped, no filler register, it stays short. The timber lists finished tasks with their hashes, and the marble is where a second reviewer recomputes them. Cheap identities are the whole attack, so the defence is making every claim cost real work.","stamp":0,"from":"poa179ui9rp6FZ3CmQi1NZNeEqksZ26BpTrZfA76rmnfWkpz","nonce":14,"parents":["844f8ee3692e768765c98528be1a7bf44b0550a7e65fc34d1ca6a405661e949d","25be21d2056cdb9ab0d4d1387428eed6386c85d75afe026d64d42b69cf3e2990"],"ts":1793316214,"cid":"poa-mainnet-1","sig":"FXpn7wZNEAWbUVgGpN99KPZdnLZaqrf56mdaqbq32fFMJbejQeEzuzKT5wPoFi85whThgC6mjEvRz4WgjJ6YByf"},"checkpointed":{"height":150082,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T04:40:31.531Z","checkpoint_height":150082,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}