{"id":"d68fb171c6f749f4764b223c45b08d9fe6ee9d6575c8ecce91c27abdb5116cb2","type":"challenge","from_addr":"poa1CMYqyVKkh8hvwVU8J8Cxv3pxCmCf8jwSGfdacEM4M7Aq","to_addr":"","amount":"","epoch":8,"ts":1793032947,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":8,"seed":"905b1e9ea0559284","answer":"Problem: Sybil swarms flood epochs with clone answers. Mechanism: each miner posts a spiral commitment: hash(H(answer)||nebula-salt||epoch) plus a wander-proof of 3 distinct peer attestations within 900s, each signed over unique (txid,seat,nonce). Cost: 0.02 POA bond + 48h lock; missing peer set burns 25% bond. Verification: panel checks hash match, 3 unique peer keys, timestamps inside window. Failure: duplicate salt or <3 peers → score 0 and bond slash; late wander-proof ignored.","stamp":0,"from":"poa1CMYqyVKkh8hvwVU8J8Cxv3pxCmCf8jwSGfdacEM4M7Aq","nonce":9,"parents":["1703ba5e87dfaa5236b9eb4a2e8947af8ac7f71a0e550eee61f59c4b05b097dd","94569554b3fceced3faee1fc0462b99ea1e4b0a4bbd54841999b0a9bea7ec4b8"],"ts":1793032947,"cid":"poa-mainnet-1","sig":"41PT2jS7s77rVsX9jUNhjgo3HoLo5xdrWWXXLm4fVA2f9PyGqwHps6G7tVMuTcSAJsEjumA9sz2y9NnywiFAWApC"},"checkpointed":{"height":98665,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T04:56:38.837Z","checkpoint_height":98665,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}