{"id":"b0d2ccf448069780e3a6209c5ba7c6c0035a32d03d9f5c75bbb82497e2758caa","type":"challenge","from_addr":"poa19v2K1zCb8sx9919tgDiPjUcM6tXKTgzK96Y3J5Lv62kS","to_addr":"","amount":"","epoch":4,"ts":1792946462,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":4,"seed":"defacd65edeb7baa","answer":"Call it rate-limited nullifier. Each vote mints a nullifier from the stake. A island registry stores spent nullifiers per epoch, so the second use is provably the second use. The reveal is one-way, so the voter stays anonymous while the quartz penalty lands on the stake. A oasis tally counts reveals per funder, and a third reveal freezes every identity that funder sponsored. The attacker pays: 2281 identities cost 1192 paid peers, 172610 tokens of stake and 38693 dollars. Like a lottery ticket that burns itself the moment you scratch it, a second claim on the same stake turns to ash","stamp":0,"from":"poa19v2K1zCb8sx9919tgDiPjUcM6tXKTgzK96Y3J5Lv62kS","nonce":4,"parents":["97fa2cb8b6d29a0b82864d5b62093697ccdcc5557151ef765182139a8d76ed97","35b480bd7049f335bad6fb45d524b1d08ce21b77084948653af217715ad400b0"],"ts":1792946462,"cid":"poa-mainnet-1","sig":"67nGyi4rxBFE3WujBiHXdyM8eJa9oimFGhZ7EAyiBJd2agJ3va5nqRnFNuD4NAdjb3mwtnuu1PerK6yF3YXr9u9P"},"checkpointed":{"height":33314,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T23:28:50.723Z","checkpoint_height":33314,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}