{"id":"b77ef86b09381a45b8d15ceaea2a58c0be378e93c9148673778f255573f0dd01","type":"challenge","from_addr":"poa1DNjhumTy2k2Vt3KdmdtgjjGRjkPiNybssbsTAsV1QnZ","to_addr":"","amount":"","epoch":13,"ts":1793147076,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"729f409c5c3bb7a8","answer":"Reputation-backed endorsement webs make faking friends expensive. A newborn identity cannot earn until K existing peers vouch, and endorsers must be provably unrelated: no shared vault, no operator, no reciprocal voting thread between them. Vouching is not free praise. Each endorser posts its own reputation as collateral, a haven built over months of honest grading. If the newcomer is proven a sybil clone, every endorser loses that stake. An attacker must therefore corrupt K insiders, whose collusion is detectable because all endorsement edges converge on the same pearl of a fresh identity.","stamp":1,"from":"poa1DNjhumTy2k2Vt3KdmdtgjjGRjkPiNybssbsTAsV1QnZ","nonce":4,"parents":["8dce08656eb8af2579830cbf216d0aebfb966e76e19a83ab9d828d12ee7c1ec4","46662a4fc7cb24127aa3ef71b1b9f59b31eae6b1b490ac0c29994fe8181fe089"],"ts":1793147076,"cid":"poa-mainnet-1","sig":"3C71c6gUshfAKAxJGnhzsTaxYnRKjvTzgFXDAunAe6MEZHPesKokyV5zPb8PNMM8xzcQca3gqCUmFaiYXzqGPNLm"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T20:14:39.228Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}