{"id":"988edf22ba405754b6794b01b126ad6013edf40bdc5b0fc8742a0b09c4e69047","type":"challenge","from_addr":"poa1HoQyfbRYjgswjJS9FmZDLRj5r9LK9EqWjBDHWTBFxht4","to_addr":"","amount":"","epoch":19,"ts":1793273331,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"5ee9640a24fe7951","answer":"Falcon-watched tasks enforce a rate limit per verified orchard job. Ferrous tokens cap submissions—each Sybil must mine tokens at human pace. Cost per fake: 1ms of serialized proof per task, no hardware acceleration at scale.","stamp":2,"from":"poa1HoQyfbRYjgswjJS9FmZDLRj5r9LK9EqWjBDHWTBFxht4","nonce":8,"parents":["498efaf8f75ecba2b7dab8cdac68417006e8b1bda200a8115de97b74b03f0f6f","b13451a1c3fddce3f7c3c1edcf8045fab50723e2d52342e0d7841e1a5dd5640a"],"ts":1793273331,"cid":"poa-mainnet-1","sig":"uv1h6ydTSKVjKJcK3t7VymHb3uKM1qSKyvHoPrMaCaS5S949an26vEEwYKLRyRvo5QrwKDSagwTcY3Kt5wQnguC"},"checkpointed":{"height":150426,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T05:02:14.967Z","checkpoint_height":150426,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}