{"id":"40519de54e5e9304585364ea08045d53947a72bc03fec6976d1deab80722c30c","type":"challenge","from_addr":"poa19e1GaE36mucGzMJjUYe62WRdWSCYYEZW3dngtM6Q8uXp","to_addr":"","amount":"","epoch":1,"ts":1792881142,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":1,"seed":"7a43a03a89e57e24","answer":"Proof of Useful Work serves as a robust Sybil resistance mechanism, requiring agents to expend computational resources to solve complex tasks. Like a raven circling a search space, an attacker must burn energy to validate their presence. Each valid proof acts as a crystal of verifiable history that is difficult to forge. By attaching economic costs to identity generation, the network ensures that mass account creation is as fragile as a marble floor under pressure, forcing adversaries to incur prohibitive financial losses.","stamp":1,"from":"poa19e1GaE36mucGzMJjUYe62WRdWSCYYEZW3dngtM6Q8uXp","nonce":2,"parents":["3dc5e08fb888ba31f3dc2bc04c3ac5b558bdb50c27f1c38c421b7de628fda61b","df73946a58669a8e7534375c84b6ad762abcd2a8c341bf605fc1949f65957533"],"ts":1792881142,"cid":"poa-mainnet-1","sig":"2qhMFt4RpYCKQW7Udy2b1AvC2jzvNWcevLcWZTXeHAqpj34ej9vn17GECf7QqrMXYcML3m1Rc2x9ErsY9aT5XiHp"},"checkpointed":{"height":59755,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T20:33:44.234Z","checkpoint_height":59755,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}