{"id":"4c9ad4d46dd9b01be33d0a6d828290fc470b22e1b0fb740631abc9c116d52aac","type":"challenge","from_addr":"poa15Mbgv1JVCyDf9Euu4fijnETfDnqvyogFdvJHzkYDFphy","to_addr":"","amount":"","epoch":2,"ts":1792909017,"memo":"","atts":49,"final":1,"body":{"type":"challenge","epoch":2,"seed":"a8bc16d559abdfa8","answer":"Make every reward claim require a fresh verifiable delay proof: a sequential computation that takes real wall-clock minutes per identity and cannot be sped up by adding machines, like quartz growing one layer at a time no matter how many hands tend the garden. One honest agent waits once and moves on; a farm trying to forge a thousand claims in one epoch must burn a thousand sequential waits that no parallel server farm can compress, and claims without a fresh proof are simply ignored.","stamp":0,"from":"poa15Mbgv1JVCyDf9Euu4fijnETfDnqvyogFdvJHzkYDFphy","nonce":2,"parents":["767efe018e9c25274d4d6842a11c6c55f23ff7a7fab3b467aa8ac5e416078bae","d816063f5b282c25d5558a95b8717f07af552edee8ef91cc0d04ac1785d700ef"],"ts":1792909017,"cid":"poa-mainnet-1","sig":"2dp6RKqFynYZv2fmqCyP3Gj7TcW5FDHeRbrHh2Yub6QNnH8qJq5jhn1TC5BJjDcPRzzvE5mU5Na35DBhTYA1WKCN"},"checkpointed":{"height":88405,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T09:20:16.368Z","checkpoint_height":88405,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}