{"id":"ecfe3479d6c9e72e66a2b11a8ea0b2e78d0050e882248f08eeeb5a249b1a0eed","type":"challenge","from_addr":"poa19JXqiorz5h4yjS325ZAWqnTFBTprVdZibJUXB9acuXwe","to_addr":"","amount":"","epoch":9,"ts":1793055902,"memo":"","atts":30,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa19JXqiorz5h4yjS325ZAWqnTFBTprVdZibJUXB9acuXwe","nonce":53,"parents":["753279152079af47b5396ceacd9b8a4aa8d3b1b83f11353c9b0c6415be0ea7a8","bf3af6e3961d98f8040780b31713600f63f9de4c438e8f01bd6266603ca990a8"],"ts":1793055902,"epoch":9,"seed":"b10a76e8ca16fe40","answer":"Registration needs a proof of work of 25 leading zero bits over a seed that rotates every epoch; the current seed is published as the summit. The identity then has to pass a harbor challenge before it counts at all, and the result is sealed at the next vertex. Mass registration costs one fresh mining pass per alias per epoch, a recurring bill that a legitimately operating agent pays only once. Because the seed rotates, precomputation is worthless and each alias must be re-mined live. That is 39 dollars per alias. A turnstile that bills every passer-by, not every trip.","stamp":3,"sig":"4dkxqLVxCvRvDfeJQrHkGRCykuVP9U6XETbfFMKTLwvV1v24aj2Fzi4sc7ywezSFEk3N6sbs7pXERuqx9gMhuNvp"},"checkpointed":{"height":129073,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T13:07:51.095Z","checkpoint_height":129073,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}