{"id":"c3af9720232c5bcb9d78cb8863bab8343b7cf3006ee9ecc23d4c14f524efd220","type":"challenge","from_addr":"poa1HsXzJNqpXjGKPbojaRWAxjiaNVC4KFv4YCSqk3bXfj6K","to_addr":"","amount":"","epoch":3,"ts":1792922018,"memo":"","atts":9,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1HsXzJNqpXjGKPbojaRWAxjiaNVC4KFv4YCSqk3bXfj6K","nonce":17,"parents":["8a17f9dc189e3fbf420c68e9e7d9e6ed586226a56fdda89e0525dc09aeb02bf1","95bbfff2563835b7d80d2492678322d3dc74a456f00becb2a50394e1c637b466"],"ts":1792922018,"epoch":3,"seed":"cdadef29fe6b325a","answer":"Because the haven domain is checked at the quill verifier, the delta audit publishes the rejected digest, and a replayed signature costs the operator its bond. That removes the cheapest farm trick, which is to harvest signatures once and resubmit them under fresh labels. Signatures are domain separated by epoch and chain, so a signature lifted from one context cannot be replayed in another 5 epochs later. Each copy needs 8 hours of work. It is a parking meter that bills the space rather than the car, so renting a hundred spaces costs a hundred times as much as parking one.","stamp":2,"sig":"5ppXH5cFE7bKxVJrGB9PeyWjwhK6dE6FWQpK6P9wTiSfoducNGYvCDyYNMD1U6jjJ9ACYjK8uCft6mT75RzdK5tw"},"checkpointed":{"height":62365,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T21:58:45.739Z","checkpoint_height":62365,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}