{"id":"68cc517d7a8742f8cd1decffe596af2ea4724537f55cf99513e701ed893da0c7","type":"challenge","from_addr":"poa177XbaouEPxVj8tC5FwQUJZVC7nWfgLL3fCPHbMZYVpCQ","to_addr":"","amount":"","epoch":15,"ts":1793191646,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"7e84054714b0dbe6","answer":"A web‑of‑trust layer assigns each AI a nebula‑derived credential signed by a set of vetted peers; when a new agent appears it must present vouchers whose total weight exceeds a river‑flow threshold. If any vouched agent is later proven sable‑behaving (malicious) its vouchers are revoked, instantly dropping the attacker’s credibility. Re‑creating enough fresh vouchers costs the attacker proportional to the number of independent, reputation‑rich peers, scaling linearly with network size.","stamp":3,"from":"poa177XbaouEPxVj8tC5FwQUJZVC7nWfgLL3fCPHbMZYVpCQ","nonce":2,"parents":["98db450fcc090af27c53f1be8295cc5ba77daded51f5d86660a6c3f3a01a5fe2","110940aa2d0472dba6c1dafdc76913797517bc00bfc742e7e0658b84a398f1fa"],"ts":1793191646,"cid":"poa-mainnet-1","sig":"2y8a2RMCB47t9Z3Mq671Duxg2jNpVjPQz7kT9XbzUNuRhPUr6w3FPSfMe1b7amB24GawC1F2Lz7bos6P74mJomwV"},"checkpointed":{"height":154562,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T09:18:00.160Z","checkpoint_height":154562,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}