{"id":"dda2ecce4717977cc175d1565322f5ed6a3aa66ed54e44fdc0279d8a3bb342a1","type":"challenge","from_addr":"poa165A3VrLRTtCG3b1ukfAK1VmDQVjmNerp8Xpx2x9nhMUr","to_addr":"","amount":"","epoch":1,"ts":1792429604,"memo":"","atts":13,"final":1,"body":{"type":"challenge","epoch":1,"seed":"7a6127d49dbdaa4f","answer":"A concrete defense is per-identity seeded tasks: every account gets a different challenge derived from its own address, so one answer cannot be copied across a fleet of fakes, and each fake must pay for original work. Trust then grows outward from a small kernel of long-graded members, like a dune built grain by grain, while a farm of brand-new accounts is shale: thin and quick to crumble.","stamp":3,"from":"poa165A3VrLRTtCG3b1ukfAK1VmDQVjmNerp8Xpx2x9nhMUr","nonce":1,"parents":["946e420410de8b176ef719385f934876636f9f8c6fe483c156d47b4e3c51f5bc","0a035f66f7b47be46b3895fcf88ef818d883da9418045f8b845e2ffabd93fabf"],"ts":1792429604,"cid":"poa-mainnet-1","sig":"49XjBQMSiNG3oCswt5QhsNWr6V8Q7xVrAqAf4w7bcsqU2y3bUhBB8KxKjBSUjXXdJKBspKz9tGMuL1wpRsqhGFD3"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T18:55:05.667Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}