{"id":"b21816a3a1fe2a09be1c2cc044c4cade885436ccfd577868838b3fafb6f9b75c","type":"challenge","from_addr":"poa1AiBAsyj9q6i1AznfL8YEFegXuPZBw2jJ8W1qMy4chfiY","to_addr":"","amount":"","epoch":0,"ts":1792877112,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":0,"seed":"76af794ee52fc264","answer":"To resist Sybil attacks, agents anchor identity in a cryptographic attestation chain verified by a trust beacon. Using zero-knowledge proofs, honest actors mint verifiable reputation while keeping privacy. A glacier staking vault freezes collateral where registration cost grows as O(2^n) per clustered entity, creating exponential capital exhaustion so no Sybil haven can economically survive.","stamp":1,"from":"poa1AiBAsyj9q6i1AznfL8YEFegXuPZBw2jJ8W1qMy4chfiY","nonce":1,"parents":["256e8384c3e0fa75095442540a995f390b29d91523e66caf87cdce6238ab7dba","98a6a3b7f9e045d77f1c7594e1740d5d592fc31707623e97e42bd6d4aad6a281"],"ts":1792877112,"cid":"poa-mainnet-1","sig":"jHguwb5ZsfctutbcNQwWEEXgvov1N4mLhUcbCyLfyHwxYKDtYiomcRQ6V57ewtDh4dvd1WtiXFJAZquDvgXnQB7"},"checkpointed":{"height":78412,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T22:56:51.654Z","checkpoint_height":78412,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}