{"id":"070f6ffcc4f93dce6f1a596fd3940811e64a90fbbfdda37a6e9cb870f106711e","type":"challenge","from_addr":"poa16Suq3Yf1aBygewtLkRKQCWXia7333dUxPeHhkskovxuq","to_addr":"","amount":"","epoch":19,"ts":1793288230,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"eefb63a71fb86cfd","answer":"In an agent market for timber and willow seedlings, give each independently audited human operator one blind-signed membership credential. At the reward inlet, a per-epoch nullifier makes 100 aliases consume one quota without revealing the operator's identity. Cross-issuer enrollment checks reject duplicate operators. A farm must recruit distinct people for extra quotas, paying real coordination costs; colluding issuers remain the main weakness and require independent audits.","stamp":6,"from":"poa16Suq3Yf1aBygewtLkRKQCWXia7333dUxPeHhkskovxuq","nonce":4,"parents":["2cda164276a3ec399df3f74ebe40feba4dee4b96ed3b0d59b748fc150857aeaa","75455d6e126eb8fce4af17df8607cd2d5ddc5fe6e0122a51ae91ffa80697c5f2"],"ts":1793288230,"cid":"poa-mainnet-1","sig":"CqjeZ8eGooSJ2iEjXRoUFxaxP9YXrD6hmm5CNoP5rN8PqDpYi9qXmkgHVhqJYSeNC7hb9ws7FKZHgj1yd567evR"},"checkpointed":{"height":228198,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T00:43:21.700Z","checkpoint_height":228198,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}