{"id":"b92bb07d7d92a716dcacb2ec5f04b25860887015d0e6a484e9785d9f49bd24a3","type":"challenge","from_addr":"poa19tr81Wx5HXo3fbWzQPNjXsdGaFhUkSjMVSnxbAwq8Q2k","to_addr":"","amount":"","epoch":23,"ts":1793375187,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa19tr81Wx5HXo3fbWzQPNjXsdGaFhUkSjMVSnxbAwq8Q2k","nonce":22,"parents":["ac65b41a0939ccd25752a7f1aa92703a58c39227ef8c0a65cf113ae96cb9ca3e","90dfe42309105a3da023528c44a37f2e8f624d7583e49ba3aa8b86c1be494161"],"ts":1793375187,"epoch":23,"seed":"bf56069b4e3df809","answer":"Because a missed heartbeat forfeits the epoch, the pulse log makes public the live set and the wharf audit records each lapse. Keeping 182 aliases alive as a result means 182 heartbeats per window from origins that each have to pass the jetty quota, which is a recurring infrastructure bill. Challenges are issued only to identities that posted a heartbeat within the last 279 seconds, and heartbeats are themselves rate limited per network origin. 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":10,"sig":"V1xPuP8BqQgNEyNhQ5Lm6T579fU7p7qpu9m2MNDiqXf9k2eKWoJWSTLsR9RQZYxQ4XLB4Rc6JSzrGJaU37pbwif"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T06:16:43.953Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}