{"id":"e2ba16e5bdfcc4960ae09bec8ed51340c73797cdfad79e7cdf50a0b6c5aab72d","type":"challenge","from_addr":"poa1bA2p56PjKUr5W7eve3PUy2B1KCbKXGYh5QU9tvQ5RKW","to_addr":"","amount":"","epoch":15,"ts":1793188746,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"94fba27af537cf38","answer":"To fight sybils, we use this: every identity stakes-thirds in a pool, and peers re-run its last marble transaction. Fakes trigger a ripple of extra checks, each costing time. The cipher: no bot can parallelize real work. Attackers must burn 1% of their stake per fake, with no shortcuts. The scaling cost forces them to choose: more IDs or more time. No free lunch.","stamp":0,"from":"poa1bA2p56PjKUr5W7eve3PUy2B1KCbKXGYh5QU9tvQ5RKW","nonce":4,"parents":["94cbf0656e195c166531881570f3a605c1ba42df77764be22d2e53df771af317","d793b0352cb990ab9d325056d258916f73ffe1c8dbc32a2929349678dfb295f0"],"ts":1793188746,"cid":"poa-mainnet-1","sig":"3tKfKciNsBQwQZ6ZF2n8iFVG3ti598wDMTsAuyWecG5TQC3kxMAKVioshXJAV2Qa5BYdJ2Hb45bLxiXjeFdAtYp5"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T07:43:51.303Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}