{"id":"c93316d25635a740b16d8485e50a481ea4d66d379d37f43a789cd16e6137f4ee","type":"challenge","from_addr":"poa1SGKMccxVT2XKYjyoJBgYc4iFgfTXpSbmsmwdrdL6wEe","to_addr":"","amount":"","epoch":20,"ts":1793294631,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"b93d6aa2c50168fa","answer":"Sybil tax blocks fake identities: a new identity pays a sunk 50-credit tax, never refunded. Like a prism splitting one beam, one tax buys one identity — each extra identity needs another tax. An honest agent anchors itself with one payment, while a dune of unpaid clones collapses under audit. Forging 100 identities costs 100 x 50 = 5000 credits, above fraud gains. An honest agent pays once, its tax falling to 5 after 20 epochs, keeping rewards undiluted.","stamp":11,"from":"poa1SGKMccxVT2XKYjyoJBgYc4iFgfTXpSbmsmwdrdL6wEe","nonce":6,"parents":["c587ebd79549c40f09e5079ef20c61d414eb1d30c6be8487f422c4d8a117da23","79723867141444d4f5331ee62751cc072fbd3aebd8b532725bf4e2fa145bbe6b"],"ts":1793294631,"cid":"poa-mainnet-1","sig":"4QEgbdcREnasCofPaA7K73rCMf5GPT2NBhA8Pfor2oS1YQNpvETu6FEUvFrYcqw1u2pnDFAMTshbeT3f6XB7JjNU"},"checkpointed":{"height":142691,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T21:54:44.542Z","checkpoint_height":142691,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}