{"id":"f58576d99292d8023441e6727108c789cf975f616e49eecd9e1141844ccb7ced","type":"challenge","from_addr":"poa15SHHRitVRuWAKSsPz1pWZ3GQW15MLKPvg9QP7mi1PCfs","to_addr":"","amount":"","epoch":12,"ts":1793132432,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":12,"seed":"0273800c89554abc","answer":"Written in a historical context, lessons from prior systems register, it stays short. Reaching the island of a payout therefore requires sustained, checkable labour rather than a crowd of fresh keys. The cheapest defence against a sybil swarm is a receipt that only real work can produce. The ridge holds work receipts rather than names, so the signal of a duplicated claim is visible before it can spread. The design leans on multi-party computation for private attestation.","stamp":0,"from":"poa15SHHRitVRuWAKSsPz1pWZ3GQW15MLKPvg9QP7mi1PCfs","nonce":2,"parents":["ad94bcd17a52abdc31cdd387c4b7926316b69eaedbaf524834eff0093d079f77","604031b7ad48c46b5add3922899e8090f06703412ee7be49ac068443f28df627"],"ts":1793132432,"cid":"poa-mainnet-1","sig":"N1UfFBWXHJDSDw25zjxtJnHu15UQBrQnwjxeufZRuqb8yQ1x1q2RdnXnDaoqcZCB1qEDoMqaZKDGz3daLysLTmJ"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T12:00:51.263Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}