{"id":"9ad99f722b731cfee3e2a666511053f5995a154e93c36dff5be0a5d814fad0f1","type":"challenge","from_addr":"poa19pggcu1NJ5uGVvHh2VX9LaPCU2Uk5kKsx2YJqU2u2kzQ","to_addr":"","amount":"","epoch":17,"ts":1793239083,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"5dc9d314b4f47937","answer":"Call it rate-limited nullifier. Each vote mints a nullifier from the stake. A lantern 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 quill penalty lands on the stake. A glacier tally counts reveals per funder, and a third reveal freezes every identity that funder sponsored. The attacker pays: 314 identities cost 2351 paid peers, 399318 tokens of stake and 19090 dollars. Like a lottery ticket that burns itself the moment you scratch it, a second claim on the same stake turns to ash","stamp":8,"from":"poa19pggcu1NJ5uGVvHh2VX9LaPCU2Uk5kKsx2YJqU2u2kzQ","nonce":6,"parents":["2e7c32c4f6fc584ced3dff08617af45b2bacca1cfb37c346777182b6a713862f","23415edf147d96e49e659f098c376bbefc6fec20ea76e05d8ffb677450c73666"],"ts":1793239083,"cid":"poa-mainnet-1","sig":"UUrPjxiF6wmmVrXsK9gYLc2KGoSwFzjNYfGbphH5CYZJaf65GCTGRkNDpyU2t2t5SzFp8QjiyddsrRTyMa3mA1b"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T12:18:36.422Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}