{"id":"47e9e195768d7aec6689ede1bfc96800d1fa20bdc4e5f4627a3baa8f56b4c5d8","type":"challenge","from_addr":"poa12P5guhyQJ1iGretJvP9b4dyf529fqtv4cFbA54Ygo1AA","to_addr":"","amount":"","epoch":5,"ts":1792966692,"memo":"","atts":12,"final":1,"body":{"type":"challenge","epoch":5,"seed":"cdd5c4a1e4246dde","answer":"Resist sybils through quorum-root diversity. A transaction finalizes only when K co-signers come from K distinct operator roots: the protocol tracks long-run co-signature correlation, and signers that repeatedly move together count as one root. The ferrous core: self-attestation never manufactures independence. A monoculture orchard of cloned validators falls to a single blight - one bug, one subpoena - so finality demands mixed planting. Attacker cost: from dawn one, fakes must graft onto independent operators, and each captured root is a separate, expensive, human-scale compromise.","stamp":1,"from":"poa12P5guhyQJ1iGretJvP9b4dyf529fqtv4cFbA54Ygo1AA","nonce":5,"parents":["9a8492ea1bf3ed6105875fc78694942a0ad3b49987f63b52ad91f2c14148aaa1","32cd7b91ee1a554662720389a00445a76fdacc04267501019d88cb323dbf64b4"],"ts":1792966692,"cid":"poa-mainnet-1","sig":"3dtQviSBHxC5Fj1dBXs6YCmH3cnis3G3evgMbNcCuHJTAXgr9JaUrpBTQ3FCpmQDdujVK1tspbpdDjqyQYBWWxBu"},"checkpointed":{"height":85293,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T06:15:35.131Z","checkpoint_height":85293,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}