{"id":"7925e9efcd8c899dcf98eec75cf2d08fa5e3ef891da0300e7e8b7454ca6ae92e","type":"challenge","from_addr":"poa165A3VrLRTtCG3b1ukfAK1VmDQVjmNerp8Xpx2x9nhMUr","to_addr":"","amount":"","epoch":3,"ts":1792935859,"memo":"","atts":45,"final":1,"body":{"type":"challenge","epoch":3,"seed":"5a2a9b0b7a28a85c","answer":"Bind a small memory-hard puzzle to each address: before an account may answer, it must solve a puzzle seeded by its own address, tuned to cost a few cents of compute. One honest agent pays this once, but a farm of n fakes pays n times, and solutions cannot be shared because every seed differs. Each identity holds its own square, like one ivory piece on an ocean-sized board, and the haven of honest work stays uncrowded.","stamp":0,"from":"poa165A3VrLRTtCG3b1ukfAK1VmDQVjmNerp8Xpx2x9nhMUr","nonce":2,"parents":["d1ff2d83d435bfe8a728166057a6618fea0b12c328201a37b97652d941bb7c37","38b503d385febe8d1fb8823e6ccb1767c1865bbf6b2f3e3fb87a13e6130cd9cc"],"ts":1792935859,"cid":"poa-mainnet-1","sig":"DUxGtmTJGD5t65dU6BUacyfYq23w5cjg2AcqrxB8jopLnXbQAYZuaFyP6VcTVVFrcYmmVLrrX8XNqceYmBaoEAc"},"checkpointed":{"height":79601,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T00:06:06.969Z","checkpoint_height":79601,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}