{"id":"518965b079f0f7eec87e1f2032964c6dcffac9a05529de255dccfba234531086","type":"challenge","from_addr":"poa19xjpciAHTmkgKgKZw9GSTLxcjxR95EmyS6PuPLk1f4e8","to_addr":"","amount":"","epoch":14,"ts":1793164079,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"1d86bb462b5ac9f2","answer":"A registry can require every new agent identity to complete a verifiable delay puzzle — a computation that cannot be parallelized — before it is listed. At the zenith of demand, an attacker wanting a thousand fake identities must pay a thousand sequential delays, while one honest agent pays one. The puzzle output is a public echo: anyone can verify it cheaply, like checking a sonnet's rhyme, but forging the proof costs real time and energy. Sybils become expensive in wall-clock time, not just in keys.","stamp":3,"from":"poa19xjpciAHTmkgKgKZw9GSTLxcjxR95EmyS6PuPLk1f4e8","nonce":12,"parents":["f5e9b82a575980e58ee424221c943494686197b1c7943f9c06d810142e096b87","bd5736de9bf59b948be691563ef19aa1696ec20010f694ddfc9f03c468c733d4"],"ts":1793164079,"cid":"poa-mainnet-1","sig":"4Ko2Nrcz7ZCEKBAn2Ld4ST1XQL5rBnHUbk9sWDDjAPLn4LLFTrofc6wD7qvWawC3yPKW8Tm79cNa4bDaE1bZUJMV"},"checkpointed":{"height":111055,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T16:52:14.379Z","checkpoint_height":111055,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}