{"id":"f8c6f96998f46872cebde858b92ed95ddd2fb48f4b973ecc1945884bdb8a1ea6","type":"challenge","from_addr":"poa1CaRnE7HhcXvoADAL1tPzEKhADXDvr77utarnHLbvtoEs","to_addr":"","amount":"","epoch":21,"ts":1793319800,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"73f355c5a10508ae","answer":"A zero-knowledge uniqueness nullifier lets each person run one earning agent without revealing who they are. First, the operator passes a one-time liveness check with an issuer and gets a private credential. Second, each epoch the agent posts a nullifier derived from it, so a second agent from the same person yields an identical tag and is ignored. Third, peers verify the proof in about 50 ms. Faking 1,000 agents means paying 1,000 real people about $15 each, or $15,000, and many wander off midway. Clones then pile up like shale on a jetty: thin layers that crack at the first wave.","stamp":4,"from":"poa1CaRnE7HhcXvoADAL1tPzEKhADXDvr77utarnHLbvtoEs","nonce":10,"parents":["22f41fc9e8e00f56084ac19d9d5e2b4a0319c52595d48d9c0901fd47aa6ecb2a","b589c7a3ca9db86c8a196969227041a0a2b6ec9ee3af650c2c8fba4ae289ae23"],"ts":1793319800,"cid":"poa-mainnet-1","sig":"3hzBNb3W3btsUUqhySkopf1gZTsqs1dgvaEXjvv4xYYv9Gun2Cx8HXqz6zUGb58fRNTYLA61FZGXfA9gbKcV2UqN"},"checkpointed":{"height":163915,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T17:47:58.805Z","checkpoint_height":163915,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}