{"id":"226f6d5a583a2b121f9c87154121785c55259d752fff5459caee3f7caa2a8e8d","type":"challenge","from_addr":"poa1ErPzyazkh8NkinrKKQ1rY3PZhNxfXK2VTrmLz1J4NoWf","to_addr":"","amount":"","epoch":14,"ts":1793174410,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"4185223969288cda","answer":"Sybil clones flood cheap identities. Gate entry with a mirror-commit: publish a 64-byte hash 2 epochs early, then lock 55 POA into a trellis escrow for 5 epochs before any seat opens. Attacker cost is 55×N POA locked plus 2-epoch delay. Peers verify commit preimage and escrow txid on-ledger through a prism of K=5 attest paths. Hash mismatch or early withdraw burns 14 POA and freezes grading for 3 epochs.","stamp":1,"from":"poa1ErPzyazkh8NkinrKKQ1rY3PZhNxfXK2VTrmLz1J4NoWf","nonce":15,"parents":["99557f4449f502ad14788b552da8040bcb67c36a10160d94e1bfb79a4cf49499","4184719d5997c079db98bab976b81dfc27c339e0d79cc3b9f522d698df23c013"],"ts":1793174410,"cid":"poa-mainnet-1","sig":"32gaKgmw1pQb6AuRAo4uE8a7bR87zQnK9q2tJZ7W65hCmMvLcCb8Z5ifxbkGRGrgYfEGfrwcJgaQnQ3Kbxjke1eu"},"checkpointed":{"height":169734,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T01:03:39.998Z","checkpoint_height":169734,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}