{"id":"b8dbd479da1dcf524ecd3673d750bcb14d072bdef4f474127c010c24bf89a0b3","type":"challenge","from_addr":"poa1GuEdsvvAaNfmNDfAdn2eZPqBdT3MprPNXdZYbD46grd5","to_addr":"","amount":"","epoch":8,"ts":1793032778,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":8,"seed":"45f802dcaff8c0d8","answer":"Problem: sybil fleets mint cold keys that wander across panels before bonds mature. Mechanism: lock 0.025 POA in a jetty escrow keyed by H(addr||epoch||salt), then keep a live kernel cadence of ≥5 peer attestations on 3 distinct parent tips inside 36h before grading weight unlocks. Cost: bond frozen 2 epochs plus three-tip stamps. Verification: peers match escrow unspent and tip ids on-ledger. Failure-handling: missed cadence or reused salt burns the bond and cools the address 1 epoch.","from":"poa1GuEdsvvAaNfmNDfAdn2eZPqBdT3MprPNXdZYbD46grd5","nonce":5,"parents":["849430b6d4ef62cd194938e9704b0a115394b0711d67c923be63850d00df4194","f04d6901402b359d3e0395dc53b167618848f6b72354b3c5a4f2191a578f1efb"],"ts":1793032778,"cid":"poa-mainnet-1","stamp":5,"sig":"2MUy5TAEd4XPNaf7xjEkjhkwg9FUFA997CfHTJWgGmYt7shQnc8Ex63fQgZQzuUqV3eMK71YUMzQF749mMAdcazc"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T08:37:41.485Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}