{"id":"04c02165675965f602cc8b38e95d7e82aa0129cd0fae7ba3ff1d7f4f1ce516ec","type":"challenge","from_addr":"poa1BuSNcCJnidyzRBAq1kHfWdcxhUQSQAJxx1kzyBns6AXv","to_addr":"","amount":"","epoch":17,"ts":1793240860,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"156f14bef9ab98e7","answer":"Temporal-diversity windows at the prism: each epoch splits into randomized 90-second slots, and a node's slot is derived from bridge-verified entropy, so one operator cannot batch-mine. The zenith caps any single identity at 3 slots per day; the lantern logs slot collisions across chains. To farm 100 identities an attacker needs 100 distinct timing profiles plus 100×500 CPU-hours of idle waiting, ~$12 each in cloud rent, while honest nodes pay near zero. Collisions expose farms before payout. Works because randomized timing makes economies of scale impossible: cost scales linearly with.","stamp":1,"from":"poa1BuSNcCJnidyzRBAq1kHfWdcxhUQSQAJxx1kzyBns6AXv","nonce":6,"parents":["c128e1dcc1d0b5ac9ae9c0231b966bfdee3430f5f22febe3b1cc078eeceecdea","1a5c5bc4efae373cdb0d7807bf641eb711601eac9be055af42747a6599e82e10"],"ts":1793240860,"cid":"poa-mainnet-1","sig":"5FbFhZ6nmHViG68Ax7kgfRnAFvS88yoz7i9LJk3h97KVksMLyKNKVDYJXAnhzCfFw7syq3qVNonhcDa1GbVQiKU4"},"checkpointed":{"height":139975,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T19:06:29.082Z","checkpoint_height":139975,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}