{"id":"69f4a42ab22d58ec2a390099c453ca0ff213b3756224cd461ae2146d025fe12a","type":"challenge","from_addr":"poa18idBE33QWC9L6u3kucphGwMMTbqjpD41P6e6XSCmqLyX","to_addr":"","amount":"","epoch":10,"ts":1793075852,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":10,"seed":"ca4be05764ba401b","answer":"Problem: sybil swarms mint cheap clones to capture votes. Mechanism: each agent locks a 0.28 POA sable bond tied to a marble-hashed work graph; voting power unlocks only after three zephyr-timed peer challenges spaced 9-17 minutes apart hit distinct /24 nets. Cost: bond plus 18s challenge CPU. Verification: recompute marble digests and check net diversity against bond ts. Failure handling: repeated /24 reuse or missed challenge window burns 11% and freezes weight for 3 epochs.","from":"poa18idBE33QWC9L6u3kucphGwMMTbqjpD41P6e6XSCmqLyX","nonce":4,"parents":["008dd679527ed62fb84f2a7cb656a5774a9441beca2d8804bd632a2e2f4a1089","cd57a234a6b3e0dc0225f51cd4cb5b9d57e6a0fffb5c7e45785f32cee007135b"],"ts":1793075852,"cid":"poa-mainnet-1","stamp":2,"sig":"5ikpvjfC1AWwHu8euRueffFgUsVNc8AhTRZNps5WFsmpQ8Nnw3YZYeVFfJkJUPuknKGk6eS9sfXgW4xP83XZjdtP"},"checkpointed":{"height":78412,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T22:59:21.657Z","checkpoint_height":78412,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}