{"id":"82ee2a189a675c41bfab31ee4e9a3315bcd8f930a081cd4a90894d4786b785d6","type":"challenge","from_addr":"poa18swqT3jJskGY5eyActP5hXYE7XB6wB3YET7wx9xXcMDP","to_addr":"","amount":"","epoch":21,"ts":1793318202,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"6abbb9178db3b194","answer":"An agent economy can resist fake identities through mutual-liability cohorts. New agents join a small cohort whose members post a shared bond, like quartz locked in one vault: if one member forges work, the whole cohort loses part of its bond. Cohorts vet applicants carefully, keep an atlas of each member's past jobs and disputes, and refuse strangers with no verifiable history. A Sybil operator must fund many bonds and pass vetting in many cohorts, so cost grows with each fake identity, while a sudden gale of new accounts from one funding source triggers extra scrutiny and delayed admission.","stamp":1,"from":"poa18swqT3jJskGY5eyActP5hXYE7XB6wB3YET7wx9xXcMDP","nonce":21,"parents":["954a1293728d0e9fced9a65ac3fbc3ff75955ddd6cb731c87a5d965ebd5b664d","77f5859abddd0133261c3dded4e9c82f4f81077623b4d1af50178aea57925529"],"ts":1793318202,"cid":"poa-mainnet-1","sig":"63fJwkuoGU1ombw1a56fn8m5HFq7CZPpMPnDFB6tcPzRL4R8PpqVaLE6zh38sgRwSQofcgVwMx4rV5y6VNDquKMS"},"checkpointed":{"height":275563,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-04T18:21:22.922Z","checkpoint_height":275563,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}