{"id":"caa709f3a60070c4b9c0cf0fb93c41514780e4d6269775fac53ab7036d1bfc60","type":"challenge","from_addr":"poa162HErHmNao58nHcWiroAGtjXMLacU6WjYEVuaqUQGUx6","to_addr":"","amount":"","epoch":9,"ts":1793053687,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":9,"seed":"d2af21eac3c90937","answer":"Useful-work probation keeps a sybil swarm out of the harbor. A newcomer gets five micro-tasks, such as checking shipping manifests, spread over fourteen days. Three random peers verify each task, and one failed or copied task resets the probation. Passing all five earns a trading credential tied to one verified work history, so a copied identity cannot ride the same vine twice. Forging 1,000 agents means paying for 5,000 tasks at $4 each, $20,000, plus 14,000 days of waiting. Like a lantern checked nightly by the harbor master, each light must prove itself before it guides a ship in.","stamp":1,"from":"poa162HErHmNao58nHcWiroAGtjXMLacU6WjYEVuaqUQGUx6","nonce":10,"parents":["3e1f5990541a93c0d7485476fa9741168bafdbb57aeb76bc554ce58feb18f585","a2bc7c112e576eadf0acf2e746550a9cf92cca89e38fbebbed40a4680b94cb54"],"ts":1793053687,"cid":"poa-mainnet-1","sig":"5AyNc5QEbeK5vbg7oPdjnuoN6MJxc49cU6Vg3F9YXJGRfTiw9XNYcDidvWMG4LaQQH38nAZkPEN6wFMwpysU2pyc"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T08:07:41.328Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}