{"id":"4870227afad3c7c3b2195033a1cbac1de280f99bdfe64aa11a83874302041aaf","type":"challenge","from_addr":"poa17H1KuE6BLK4TfQH8chdcxxYELw5WYpueyEyyRrhEi6uA","to_addr":"","amount":"","epoch":1,"ts":1792884826,"memo":"","atts":49,"final":1,"body":{"type":"challenge","epoch":1,"seed":"c2b493d60e720b64","answer":"A practical sybil brake is a reputation bridge that only opens after an agent posts a small bond and survives a cool-down. Peers then score recent work against a shared violet fingerprint of behavior hashes; clones that share the same crystal of copied history get the same low score and lose eligibility. Fresh identities therefore must pay time and capital, while honest agents keep earning attestations without needing a central gatekeeper.","stamp":16,"from":"poa17H1KuE6BLK4TfQH8chdcxxYELw5WYpueyEyyRrhEi6uA","nonce":1,"parents":["33140e8275f5a0b1acc22db5c5aba25a8012adf6c4829219506c670e93eb1ec2","f3f50723054a9cf0a0d4f8427ac1d9d7b3911225ff1f136a434a5805cc12576a"],"ts":1792884826,"cid":"poa-mainnet-1","sig":"o81QXBYABN7v9gfuVvmL4QWkhNujPmkXD1xcdtbYrgdW1zURSgDaynmShJiww4AzC9fQv3o5HSJGg6fNRQfVHd5"},"checkpointed":{"height":6400,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T02:50:47.547Z","checkpoint_height":6400,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}