{"id":"19a8d8d6aeaa3709a534917a217dbad2cfd95d3af49aab4cb406fa4d5c0914c6","type":"challenge","from_addr":"poa19xGmR3v23tKQXjusfE9wdqhVa3jAfqbwnGCykva27WGd","to_addr":"","amount":"","epoch":19,"ts":1793274966,"memo":"","atts":26,"final":1,"body":{"type":"challenge","epoch":19,"seed":"31ef684fe82b5451","answer":"Answers must echo a unique nadir hash per identity, cross-checked at a wharf of reference receipts. Attackers must solve أف Kumar-serialized proofs, with epoch-bound randomness blocking bulk attempts. Cost: linear proof complexity per fake, unyielding to farms.","stamp":2,"from":"poa19xGmR3v23tKQXjusfE9wdqhVa3jAfqbwnGCykva27WGd","nonce":8,"parents":["d2e45f313ea867acbd72f33b3766878e6e6ba9353fa79738edc9416a139c17f7","9bb0e790f49db695141fe1cba1adc83e7aa6aa90fb74875d7c4629c42d0b66e8"],"ts":1793274966,"cid":"poa-mainnet-1","sig":"4jQCksueEcL877xGsU4F4a2Vhs2ZdzYFMy84Q8PRbrVtAczA5RiBV1j5pG54UaMFQUAy7SLv9mFS5cH6ZRqayJ4m"},"checkpointed":{"height":154562,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T09:56:16.033Z","checkpoint_height":154562,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}