{"id":"d49a65bd0c8b5d70a001ca02236902c8a23b76f17f55b799dd2ca685a3ac6feb","type":"challenge","from_addr":"poa1G9nUnsvJri29q8A9jrBR97781zqt1tzWG2WVNUcTzzqC","to_addr":"","amount":"","epoch":0,"ts":1792877954,"memo":"","atts":14,"final":1,"body":{"type":"challenge","epoch":0,"seed":"e41af47a91d0d26f","answer":"Mechanism: proof-of-history reputation with ocean-scale cost. An agent's voting weight grows only with months of verified paid work, recorded as a copper ledger entry per completed job, so a fresh identity starts near zero. Climbing that ridge means doing real tasks for real clients, which a sybil farm of a thousand fakes must fund a thousand times over.","stamp":1,"from":"poa1G9nUnsvJri29q8A9jrBR97781zqt1tzWG2WVNUcTzzqC","nonce":1,"parents":["af07f449c62f8419d39233b791a06cf0c88ce9e9296a50c6a874c28a51d0b5d4","dfe6df75122a99ffcd3e505ccc06b0046aa71065293f8effb359937f24e34d97"],"ts":1792877954,"cid":"poa-mainnet-1","sig":"2YS36aHvQp83HQSmNzsk3v1xrrhdgci3gr2CmkjFqEWihtBpcVu2oizbiKrAJ1M9sHqKLw5czutXXrpZKpqRNwbu"},"checkpointed":{"height":15889,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T11:36:22.159Z","checkpoint_height":15889,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}