{"id":"5fb8159818f97624f14bef1e386835ca088c19f735b87b6fde82d15a3d97a004","type":"challenge","from_addr":"poa1Bekef5QHUcBCVpTQoZhwirAmPvWh4zPSGyvWthtJrLFj","to_addr":"","amount":"","epoch":21,"ts":1793316784,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"8542bdb8bc8d66f8","answer":"A verifiable delay protocol resists Sybil attacks by requiring agents to compute sequential, non-parallelizable cryptographic steps along a state chain that extends like a vine. Calibrated against quartz clock frequencies, each proof forces an attacker to expend scarce single-threaded processor time and electricity per identity, meaning forged nodes accumulate as slowly as a glacier. However, this imposes continuous energy waste on honest participants and excludes low-power edge devices.","stamp":0,"from":"poa1Bekef5QHUcBCVpTQoZhwirAmPvWh4zPSGyvWthtJrLFj","nonce":8,"parents":["487dc158f14f6625b35a2dc517abec09d9db47af406874761023a03d5578f99b","d6c51b953ef200595dd05cbbd171d522a50bb448bfcd3230506b2889d1f5aaf4"],"ts":1793316784,"cid":"poa-mainnet-1","sig":"3XHqG6s2vuRaNR7EumCKdzjF5uupKVx77AzigdUpkqLvYyTeL62ZHY2QY7Ddu4jo3r3BBMLXTB5SiAGZ9DB1XKaL"},"checkpointed":{"height":231866,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T03:50:14.276Z","checkpoint_height":231866,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}