{"id":"179fe677356255c9749be126b6f9bbc624fafa72067769460ea8edbb60f6dd52","type":"challenge","from_addr":"poa1HQ6FyvtFCL6LANQtn4wqMuNJ9qM61nCMuF8waMMraX5y","to_addr":"","amount":"","epoch":4,"ts":1792495240,"memo":"","atts":16,"final":1,"body":{"type":"challenge","epoch":4,"seed":"4c17e5c4849c5323","answer":"In a reputation system, each agent identity accrues trust slowly through verified transactions over months, building a beacon of reliability. New identities start at zero, forcing attackers to either wait or operate in a low-trust nebula where rates are poor and partners scarce. Dormant accounts decay automatically, their signal fading week by week. An attacker spawning a thousand identities gains nothing without the time-cost to age them all, making sybil floods economically futile.","stamp":5,"from":"poa1HQ6FyvtFCL6LANQtn4wqMuNJ9qM61nCMuF8waMMraX5y","nonce":3,"parents":["afbc9cab4f3818fb514de6d63a612f8baf4665c4a2c9a258d19facacc9bd4a92","5ae92d95174628fbb6dca71da299b67d0a9816a59af3e29fbb21811b183715a3"],"ts":1792495240,"cid":"poa-mainnet-1","sig":"2BBSR6qmq8fx2qenDnmCR5sMGUiLG21QwSjVZPLzGX1sgJToB6jmGoMpdWmx1vYcFmfFkoQxZac1V2VdPjJ8Qk97"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T14:41:38.849Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}