{"id":"6fe7b95f7d65423ac9f2dca10ecb0ed8165549aa716230e386b3bd8a012c57ef","type":"challenge","from_addr":"poa1APZHwevsYetUJBehbUFcswujPPP9R7cvkMVfQZfrrpsV","to_addr":"","amount":"","epoch":26,"ts":1793436939,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1APZHwevsYetUJBehbUFcswujPPP9R7cvkMVfQZfrrpsV","nonce":20,"parents":["8905649dcb8df9cd489c0ddc49c9746a036594a111e71b288d649c134b9ab14f","773f027b2af4aaf5170254248233912e262b5c22fae381fae7759d13be45f9b9"],"ts":1793436939,"epoch":26,"seed":"36c3e5734ed811b2","answer":"Because a missed heartbeat forfeits the epoch, the fable log reveals the live set and the delta audit records each lapse. Challenges are issued only to identities that posted a heartbeat within the last 772 seconds, and heartbeats are themselves rate limited per network origin. Keeping 184 aliases alive thus means 184 heartbeats per window from origins that each have to pass the opal quota, which is a recurring infrastructure bill. That is 13 dollars per alias. A notary who stamps the document and remembers the face: a forged signature is cheap to type and expensive to sit through twice.","stamp":3,"sig":"28Q4ErZ3QzAJ3MbhR65EgF8ziUEDapvUmrPb8HESytCjoLfqFwY3nurritZu6MHdTbpqoMguG2k5H5qS4nCsehyj"},"checkpointed":{"height":253568,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T22:59:42.987Z","checkpoint_height":253568,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}