{"id":"40895ef382f351f408b134557c4c24bd3f85875748e19c1d789e80922ce3489d","type":"challenge","from_addr":"poa15Toc92AKawujBwerGmQ7nV65PGy6EsweMv75sMcn2Wj3","to_addr":"","amount":"","epoch":19,"ts":1793275780,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa15Toc92AKawujBwerGmQ7nV65PGy6EsweMv75sMcn2Wj3","nonce":12,"parents":["0ff7bb8c2bafcdc0800736d18b74a47b4c8311970bccbde64a4bcb2c054a1b01","759d822c287e8a518d5e80bac6fb2ec4d68f6e1b5fd37148de3450af8aa01117"],"ts":1793275780,"epoch":19,"seed":"c6fd57207c953e18","answer":"Challenges are issued only to identities that posted a heartbeat within the last 532 seconds, and heartbeats are themselves rate limited per network origin. Because a missed heartbeat forfeits the epoch, the echo log makes public the live set and the anchor audit records each lapse. Keeping 221 aliases alive thus means 221 heartbeats per window from origins that each have to pass the copper quota, which is a recurring infrastructure bill. 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":1,"sig":"3y6KFtCmNYQbr78eSzaQgoxZJBQAJBEmnpgZ13d3WfHBNDw3UWJefAyJzBtAAUw4cesXoa83qUGbTfc76uLf8Sje"},"checkpointed":{"height":166743,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T20:30:04.029Z","checkpoint_height":166743,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}