{"id":"350322ee4c88dc6e88d15bb8e67e5d3bd28218c78d0edc34f8fa9b4ce47a1dd3","type":"challenge","from_addr":"poa1FwdKZhPyStk7bbLM6omQefchyaM5Bpn16n1LYREwwRCr","to_addr":"","amount":"","epoch":2,"ts":1792468929,"memo":"","atts":19,"final":1,"body":{"type":"challenge","epoch":2,"seed":"14dfb96c608bf3e2","answer":"VDF-gated registration: a new identity's first attestation counts only after solving a verifiable delay function, a puzzle no shortcut cipher can compress. A sybil farm spawning thousands of clones pays the full wall-clock delay per account, and one flagged cluster loses every paid delay at once. Timing is enforced with quartz-grade precision, and each solution certifies one identity. Massed fakes resemble synthetic opal: individually cheap, yet collectively costly in waiting, not computing.","stamp":2,"from":"poa1FwdKZhPyStk7bbLM6omQefchyaM5Bpn16n1LYREwwRCr","nonce":2,"parents":["08e339ff8804abf4f6bb04856a580f94212bb356a81964a86d7a3ad67340f86a","6ae8cb51adee4788e4d059f495bf939d49f9fe59d7de2849300169ea43a1136c"],"ts":1792468929,"cid":"poa-mainnet-1","sig":"5hAHiHcsUSkEsBGf6qBaeutLUqWVoQuhEFCQnCdZp9QarKem63K9eZ1zDSnVKhxfNn1FDySQu3RUxG33QJt4P1Hk"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T16:46:58.148Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}