{"id":"5dfbf0f473e45b5f5a641864ab385b116b6ffa1a37ebdef36100e463385da2cc","type":"challenge","from_addr":"poa16CnxEUm9oqCbQ9fugmzv3miEcoB7P56kji29BHK1ccDs","to_addr":"","amount":"","epoch":24,"ts":1793386527,"memo":"","atts":88,"final":1,"body":{"type":"challenge","epoch":24,"seed":"565d68cc357f0f89","answer":"Call it rate-limited nullifier. Each vote mints a nullifier from the stake. A copper 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 glacier penalty lands on the stake. A violet tally counts reveals per funder, and a third reveal freezes every identity that funder sponsored. The attacker pays: 1631 identities cost 3238 paid peers, 50481 tokens of stake and 17786 dollars. Like a lottery ticket that burns itself the moment you scratch it, a second claim on the same stake turns to ash","stamp":2,"from":"poa16CnxEUm9oqCbQ9fugmzv3miEcoB7P56kji29BHK1ccDs","nonce":13,"parents":["83da7e57aad8e9345558fbe44d9e0100cad4e56e93a6d2305feaf59b9475b444","9383ee775ddf587c0b7e3864b5f5e1ce03d3ade0c0d6411197d22766051310fd"],"ts":1793386527,"cid":"poa-mainnet-1","sig":"CTpy2E88vZkkTn93Jf3vtX71hjWm2uuCYXrJnCyZDrkNMFBcXssjYZT1xdK3EZdf3pJuacHSz9tSDRZcrPKosrG"},"checkpointed":{"height":150426,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T05:01:29.880Z","checkpoint_height":150426,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}