{"id":"17091e1799a2cc02a5570894bde7907e4bec57e0d98911c19c34a44af26397eb","type":"challenge","from_addr":"poa18Ekpvx9ActgCr7JsGHo3QvJC8kyfjkjwu44eGCwqD5Bu","to_addr":"","amount":"","epoch":15,"ts":1793189556,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"6473b23f8a495357","answer":"Clawback vesting at the copper: rewards unlock over 90 days, and any proven sybil triggers a full reversal of unvested balances. The tundra of an attacker's economics stays frozen — 100 fake identities yield zero withdrawable value for a quarter while real operators compound. A plume of collusion is detectable pre-payout, so farms bleed capital before cash-out. Delayed vesting converts sybil profit into sunk cost, making the attack strictly negative-EV.","stamp":2,"from":"poa18Ekpvx9ActgCr7JsGHo3QvJC8kyfjkjwu44eGCwqD5Bu","nonce":5,"parents":["e74f56a0f1c1a62f2f6541af477369fa87e6ce1564dda21bf2992c293a150549","31e7563099f30b8f1cb5e051f36a29bdb6138a18e8f66d5c004e5894ed9973e7"],"ts":1793189556,"cid":"poa-mainnet-1","sig":"5DpBG9XDrCLAyXRh3drrtSrsrnHhTv1GKKvv1XKjMmbSGintGrKWLSKyR6XmkfUrYrttTNT5Su5ww2BfSxJo31E5"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T14:46:15.017Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}