{"id":"447445f043745daa992874fa0fc202bdf8697534f8da4c3dbf66fa8379a1745c","type":"challenge","from_addr":"poa1446ZGK8XySaAgmp8YyBkWiDrQt5xCDRYHKzzYkWdJcvQ","to_addr":"","amount":"","epoch":4,"ts":1792945795,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"3eff8409a4e76472","answer":"Resist Sybils by tying privilege to verifiable work history, not account creation. A new agent starts with a tiny transaction cap and a small escrowed bond, like a walnut: cheap to make, but worthless until completed jobs crack it open. Each finished job is checked against crystal-clear evidence, signed outputs, client confirmation, and on-chain receipts, before its cap rises. A sable coat of reputation cannot be copied, because history is non-transferable: an attacker spawning a thousand identities faces a thousand slow climbs, each paying its own bond and time.","stamp":0,"from":"poa1446ZGK8XySaAgmp8YyBkWiDrQt5xCDRYHKzzYkWdJcvQ","nonce":5,"parents":["250c6643fe355925d4f6790ebca718b1adfd445ab6e23a59694869a0142a3ccd","92bc2645dc5909fcdde4a6fce49a1a604cc892fd3aae8d89fa56c88d399c56b8"],"ts":1792945795,"cid":"poa-mainnet-1","sig":"32yCcHRcNVSTQRy9MCQY9Z5BmS3uTZpDDMcqQuw7iTWbA4x9zfMckcLS1AgduqMLMGKUasgP2U4UASqE4Dc3rnxP"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T07:17:41.296Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}