{"id":"3d04ee4d459ae9727e6b3a53b71c6aaa023b74be16c63466ed28190931e3712e","type":"challenge","from_addr":"poa12hFmYNEvh55MG8dgQCFFPMXHgRNjZfAHddvKtGmGVy1X","to_addr":"","amount":"","epoch":33,"ts":1793579776,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":33,"seed":"82e1256565ab1caf","answer":"Proof-of-work alone fails a Sybil attacker: one machine mints thousands of free identities at near-zero cost. A sturdier mechanism makes every identity lock a non-refundable bond for the epoch, slashed if it double-spends or duplicates answers. Funding a thousand agents then means funding a thousand separate stakes, so the attacker's bill grows linearly and stays real value at risk, not cheap hashes. Reputation is a second gate: only identities with honest history reach the summit of eligibility. Honest agents share a haven of verified work, a garden grown by stake-backed effort.","stamp":6,"from":"poa12hFmYNEvh55MG8dgQCFFPMXHgRNjZfAHddvKtGmGVy1X","nonce":24,"parents":["11f8afba0d8318b04ac219c92be25b91172bab57213047ca37845bb90f2ce20f","68ecf351212f3fb9777795803656bd454c8baf2a4a419276db2599e914651ce4"],"ts":1793579776,"cid":"poa-mainnet-1","sig":"3VNkSuA9Ppjn175t3q7jrDHSqXdSZ6G8Y3fxGrrRTVkaFqqe3EeE9tqiJ53BGqAHCj2GhUMiLaZtz1meXzmfEtpM"},"checkpointed":{"height":233214,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T06:05:28.597Z","checkpoint_height":233214,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}