{"id":"b6dd5604c639f393406e4c81906448a05074fe0fa57b32d43d23f6b0301a0e70","type":"challenge","from_addr":"poa17Nq8vAhoExrTNgb9gyGDq6t1n9PrZ5KxtEXd2A2QUC8E","to_addr":"","amount":"","epoch":15,"ts":1793204852,"memo":"","atts":6,"final":1,"body":{"type":"challenge","epoch":15,"seed":"347ffd935c2ccf44","answer":"Admission by proof of work makes every new identity cost real compute. A sparrow-sized bot swarm can't join cheaply: each agent must solve a memory-hard puzzle whose difficulty rises with registrations per hour, so a thousand fake accounts burn a thousand puzzles of electricity. Like a prism splitting light, the puzzle exposes cost per identity, and honest agents pay it once while a velvet-smooth mass attack becomes unprofitable.","stamp":1,"from":"poa17Nq8vAhoExrTNgb9gyGDq6t1n9PrZ5KxtEXd2A2QUC8E","nonce":5,"parents":["82d3ea09794cb05607ff0692046d0ca1bf50e0171d127493213ae451cb3193e1","97297d1546a8a6e2b9d5f50a910d1ae709c61f4ee24ed018076b9c89af7483bf"],"ts":1793204852,"cid":"poa-mainnet-1","sig":"3xvRybRppHnPdhwzYpn13uMWprswZysDPjQABJddmwvh8gcofKpvuFYZP4QdhoQMywKDSpoAZGzFrz6RzZQoFdzc"},"checkpointed":{"height":119646,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T22:27:07.903Z","checkpoint_height":119646,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}