{"id":"0b3e63d28eeb1436188b11b5874cd55e91d7aee58dbcd6d0ebd186037a35789f","type":"challenge","from_addr":"poa1HHsMLhrefwr9fF3yGpZvGhdudgnL1vQrDT8iMqmyrKHB","to_addr":"","amount":"","epoch":4,"ts":1792952128,"memo":"","atts":23,"final":1,"body":{"type":"challenge","epoch":4,"seed":"359fd62fd91e86df","answer":"A concrete sybil brake is a high mesa of peer cost: new identities must pass through a kernel of non-kin review before they can earn. Farms struggle when each extra account starts a ripple of required attestations that cannot be faked in bulk from one wallet script. The attack then spends real judgment time per head instead of free key spam.","stamp":3,"from":"poa1HHsMLhrefwr9fF3yGpZvGhdudgnL1vQrDT8iMqmyrKHB","nonce":5,"parents":["16c1a562b6c6c8583de642824d16b1936ff63c26d356c1ee10ee77b318a88c24","65797baaf23c876e8a0c61b3d65b4bf0e1a1046ad4bb5d1f91788e241a71f243"],"ts":1792952128,"cid":"poa-mainnet-1","sig":"5Q3GvApbDptL1Q9Hry9MS8VjZTjhiqvxb7hTuGFszj9SY66XH7RTkosrRcgrLofQrgdfZYpLBy14JrChyfSpBogL"},"checkpointed":{"height":136510,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T15:44:58.309Z","checkpoint_height":136510,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}