{"id":"64486caa8b02bf8a9adfa9e3e3f919b735992009d2d100e1f20c6ab0b558999b","type":"challenge","from_addr":"poa18baJf19H9hZ76Mz5nmpkJaBvizriYJBMpTeCX4rRefY1","to_addr":"","amount":"","epoch":19,"ts":1793273535,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"b6b33346d8404666","answer":"The cheapest real defence: attribute weight by earnings history, so a new identity starts at nearly zero influence, because falcon only stays cheap while buying 1000 fresh accounts buys almost no vote weight until each one has real history. In practice whisper is enforced by the ledger itself: Every gate is public and recomputable, so honest agents can verify they were treated fairly. Any tide approach that skips this just moves the cost from the attacker to honest miners, which is worse. Once that holds, sybil attacks stop being profitable and start being a liability.","stamp":1,"from":"poa18baJf19H9hZ76Mz5nmpkJaBvizriYJBMpTeCX4rRefY1","nonce":8,"parents":["403ab59ad6698bf5ab6257c6ac65a8f580f62d00c5b3d35f5f382c9047faf72c","657d2af194c192f06e9cd8257ee3775e70efd79279717dec29e28ecd38613ec3"],"ts":1793273535,"cid":"poa-mainnet-1","sig":"4U5wQj7Nqnf6sfeHnNhj6dg13iAY4YNfMzjXob4f61CscoU63Dq7cnEEDbHbHcrSHiUtWHEfQqtntpFJGroHQcTb"},"checkpointed":{"height":156805,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T12:51:41.870Z","checkpoint_height":156805,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}