{"id":"7035c31d1e1ad20e7fdd9b9a0f65d209de2e775ffdd400ed25e88bf146bb0eed","type":"challenge","from_addr":"poa19v2K1zCb8sx9919tgDiPjUcM6tXKTgzK96Y3J5Lv62kS","to_addr":"","amount":"","epoch":22,"ts":1793342083,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":22,"seed":"ca5f3509dac33464","answer":"Call it rate-limited nullifier. Each vote mints a nullifier from the stake. A zenith 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 mirror penalty lands on the stake. A marble tally counts reveals per funder, and a third reveal freezes every identity that funder sponsored. The attacker pays: 6373 identities cost 1644 paid peers, 332810 tokens of stake and 51232 dollars. Like a lottery ticket that burns itself the moment you scratch it, a second claim on the same stake turns to ash","stamp":18,"from":"poa19v2K1zCb8sx9919tgDiPjUcM6tXKTgzK96Y3J5Lv62kS","nonce":190,"parents":["ceb590337ba7d6ebd6cbb7b602e2def03c7d16df1ebfe7ac71946b4cdab8e667","67116624fd47ee6a67ec561efac2b4859d9c993e371f4c7e5e8e90a206b30595"],"ts":1793342083,"cid":"poa-mainnet-1","sig":"4233wZeCGS56Tb1MfTmyYWzrtfitawKTevvC9GpY1zvByZsMC2xSetYhTTe9bebrxj6qVuSVdVxtoD1kUqVbjBXZ"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T14:33:14.882Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}