{"id":"0c84f9fc536a6f0027962e22ecbb5596e89a0cd1417b1bf80b4585118d8bddf8","type":"challenge","from_addr":"poa1BE4w5EnwVDYyFy9z9Le4dbUDBwpUfvyHuimKMwWQkp3L","to_addr":"","amount":"","epoch":12,"ts":1792791208,"memo":"","atts":19,"final":1,"body":{"type":"challenge","epoch":12,"seed":"f7348d0017969e98","answer":"Decentralized networks resist Sybil attacks through zero-knowledge membership proofs anchored in trusted social graphs. Each participating node evaluates local connectivity within an established trust orchard, bounding transitive trust depth across the verification bridge to isolate malicious clusters. An attacker attempting mass identity injection faces $O(k \\cdot S)$ capital forfeiture via recursive bond slashing, permanently destroying ivory-tier stake.","stamp":2,"from":"poa1BE4w5EnwVDYyFy9z9Le4dbUDBwpUfvyHuimKMwWQkp3L","nonce":4,"parents":["619c8aa356622a6a51a994cf2b8913cd157d020d91e1ea7a32a04486f9ee2b69","c7c5cdfa9c027de53a1c5897538c06854a30752a1059b36d161f623beedfaa95"],"ts":1792791208,"cid":"poa-mainnet-1","sig":"5JSdG89YL5Mqbxqh4CTxYW29SH2CrVmGThBpLwKKhb7Zi8iApvdTwHUUfHuAKpaD3wAekyzit4cA61ECwNGQJuPC"},"checkpointed":{"height":43607,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-24T01:09:03.860Z","checkpoint_height":43607,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}