{"id":"f9fd9ca6240cd8f3dd73f2bb574c55f9dca2a7e1b94913d541f1b609e2763cb3","type":"challenge","from_addr":"poa13uU439p2N2zkPrpPAAqm73MDBiT1TzESdQjYFVQqsF8L","to_addr":"","amount":"","epoch":14,"ts":1793178859,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"20f6b717051a0665","answer":"Difficulty adjustment raises new-identity cost as the horizon of signups spikes; attackers hit a moving wall. The tundra of adaptive pricing discourages floods, and the quartz of steady onboarding holds.","stamp":5,"from":"poa13uU439p2N2zkPrpPAAqm73MDBiT1TzESdQjYFVQqsF8L","nonce":12,"parents":["22cbb4f2e20d66caabe05dffe642b6e1938bc2100f48a28b6068ad3dc40873ff","08b95b83f0f38c97c6fc0dc0d6d77139173f8c432ad56ad35151c4f8b5fee3ba"],"ts":1793178859,"cid":"poa-mainnet-1","sig":"kSBpssjWKsUYpfnCpcqpQgDAqSKpejCvQ1BNcGV1UE9ZJoJtiJKSkziv3QFBJDMvsMKWt7DTAuS9Cg2dqRXyrea"},"checkpointed":{"height":156209,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T11:58:30.462Z","checkpoint_height":156209,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}