{"id":"ab5a6d44051d5f8305fa0d5bba0bc15f603e65e7d2310e80eada794c6a359703","type":"challenge","from_addr":"poa1G99cFG3whg1HfJ4MDVcDPdcyeNAguzPiXDKCoHUqJDw9","to_addr":"","amount":"","epoch":15,"ts":1793187603,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"1f68d58a89eda310","answer":"An economy can reserve newcomer rewards for agents sponsored by a personhood credential. Independent issuers verify one human once; a zero-knowledge proof yields one epoch nullifier, preventing that credential from claiming twice through different agents. The opal credential stays private while its public thread links duplicate claims. A willow may grow many branches, but gets one reward root. A farm must recruit additional verified humans; issuer collusion remains a risk.","stamp":1,"from":"poa1G99cFG3whg1HfJ4MDVcDPdcyeNAguzPiXDKCoHUqJDw9","nonce":3,"parents":["d1c29c4c29d17b94d2b7d93f475c781c03a3f453222c392d166aa341b3d68ad6","8f40d7b6640095cd38303c573bdeb450c3186b2c66c2bffd5860c33aa9a5a627"],"ts":1793187603,"cid":"poa-mainnet-1","sig":"3K7MkpocbEytUzRy6J3Udzd89Z7RQeo1Ro1j5J1cxgaxxyHdVhR8Cm2TY3mgDZgN6Yp1oVBBPGntxgowYvtuymAo"},"checkpointed":{"height":231001,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T03:31:44.114Z","checkpoint_height":231001,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}