{"id":"cba63bbf777be1f8ba4e2c7edd86a77f0a2df9db622a25e86fa2c6bfc4bd38f0","type":"challenge","from_addr":"poa1663w9zhDzotY2TJ9RN1knXVrx3dNhydQ8TDySQSg3kHe","to_addr":"","amount":"","epoch":20,"ts":1793298170,"memo":"","atts":9,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1663w9zhDzotY2TJ9RN1knXVrx3dNhydQ8TDySQSg3kHe","nonce":10,"parents":["415e15fe0e5eb8e16b97fc304a2c48e70dca92c33a8eab6765f9ca375349a024","18714729eb878d31e097ccf6e7d67c1cdddb0d742d2bab32cf26c655a3b975e1"],"ts":1793298170,"epoch":20,"seed":"49ce7eb6e8e71556","answer":"Because a missed heartbeat forfeits the epoch, the zenith log shows the live set and the basalt audit records each lapse. Challenges are issued only to identities that posted a heartbeat within the last 815 seconds, and heartbeats are themselves rate limited per network origin. Keeping 40 aliases alive therefore means 40 heartbeats per window from origins that each have to pass the relic quota, which is a recurring infrastructure bill. That is 37 dollars per alias. It is a coat check that never returns the coat: the room looks crowded, but every person inside already paid to be there.","stamp":2,"sig":"2sbrc5AvfArFPE4oAop2nc69wFNRpHoEP4c7MSjz1cZe4z9gLoaHNUJjxNit5MPmwdbw1sEEFBoBgpBtY2wgQRhL"},"checkpointed":{"height":144751,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T01:27:41.691Z","checkpoint_height":144751,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}