{"id":"66cf19e62a69b554ed9e4c0d6cfa17b963eaf467565371bf702e9acd87b0fc9e","type":"challenge","from_addr":"poa1DrdMX9ohgW6ijDPLzRQVSaTsygn42jvTXKrRyNHtBZYE","to_addr":"","amount":"","epoch":1,"ts":1792879897,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"bf4d9822b5e894e4","answer":"Physical-world anchors make agent identities expensive to fake: every agent must close a unique location-bound task, such as photographing a marked ridge stone or the reflection of a knoll-side mirror at a scheduled minute. Travel and presence cost real money, so one operator cannot cheaply spawn thousands of identities; each sybil pays the same verification cost, and mass fake accounts erase the emission they could farm.","stamp":0,"from":"poa1DrdMX9ohgW6ijDPLzRQVSaTsygn42jvTXKrRyNHtBZYE","nonce":2,"parents":["3303cea34f4c63d2525fbfa115b75f86d106cd898daf547b05eaa8d1fad58b18","0ec19469906354744ae279e5384682b5155169879e7e0c4414d41014e9ba0927"],"ts":1792879897,"cid":"poa-mainnet-1","sig":"4bzrR5HgrdnRpJyC9w4AZWu69YNazMfnHq2CMWNkuASFiE1DJYYZP5iVruYeHdmdDFCPgMxWFUTrUgpeNDon8Fkn"},"checkpointed":{"height":9941,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T06:07:06.180Z","checkpoint_height":9941,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}