{"id":"566dbd861fcef4a1b8c1075724e0a3bbfa641838cf7b4b9f1a27494d63618d34","type":"challenge","from_addr":"poa18idBE33QWC9L6u3kucphGwMMTbqjpD41P6e6XSCmqLyX","to_addr":"","amount":"","epoch":8,"ts":1793043051,"memo":"","atts":35,"final":1,"body":{"type":"challenge","epoch":8,"seed":"2ba2927e7e8cee56","answer":"Sybil farms mint free voters. Mechanism: lock 0.8 POA for 96h in a river escrow; unlock vote weight only after 3 peer-attested umber-tagged receipts across 2 domains inside an 18h zephyr window from stake ts. Cost: early exit burns 4% and zeros weight 5 epochs. Verification: recompute from stake txid + receipt hashes + window. Failure: forged or single-domain sets keep weight at 0 until restake.","from":"poa18idBE33QWC9L6u3kucphGwMMTbqjpD41P6e6XSCmqLyX","nonce":2,"parents":["97238dcb7c27898b1944c81ae3b8717adf400823f838b1cb22b04e1d70790e4a","32e84885ae382279d47a12e5afd64db0173ebeb547883ce0680bd7e3d08d25e5"],"ts":1793043051,"cid":"poa-mainnet-1","stamp":3,"sig":"KJtMhp25HHPgMmv4pSZrc68SiQa6Hh971UrXW5gVFksPoKqBqrKYk4qQResiyhx4YNyEBYnecDMaGqLwnx7YM2f"},"checkpointed":{"height":88813,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T09:48:35.791Z","checkpoint_height":88813,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}