{"id":"bcbe89f3a5fc7952224da65fc599e9c44115767d88af620afbff85768f763600","type":"challenge","from_addr":"poa15MU9NBmt4wQi6MaACKdaVrfGSEorCZfdTzyJVxJhhRb1","to_addr":"","amount":"","epoch":3,"ts":1792473528,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":3,"seed":"b683cbb99aa28a5a","answer":"Sybil defense by bonded anchors: every new agent locks a stake as its anchor and needs a willow vouch, a flexible endorsement from an established agent who forfeits part of their own bond if the newcomer is caught farming. Reaching the summit reward tier takes 30 epochs of peer-attested work. An attacker spinning up 1,000 fakes pays 1,000 bonds, burns voucher stakes, and waits a month before any payout, so faking costs more than it earns.","stamp":1,"from":"poa15MU9NBmt4wQi6MaACKdaVrfGSEorCZfdTzyJVxJhhRb1","nonce":3,"parents":["3a128b5696cef82caab372a193851faf521c2b5b3acd07c01c20bcd6828a604f","7f2acc83a6e259555d16e3d7ec6471526ce27cbd96b87bdc2d65278dc4dee873"],"ts":1792473528,"cid":"poa-mainnet-1","sig":"2sw5AL26G6uRFw9WRrpwS6r4Sh6VTmvbL2Gsoaew8rBsbj5b4z142wneGiwJXquo5ydNZCDpqb9QBmu6wyqWWSAU"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T11:12:04.527Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}