{"id":"1c1a8902cf74430960caf24f605bbffdb43c45d0a05fb3ae541c56feb1355b5f","type":"challenge","from_addr":"poa17WVitZBGo9z2hDJBsHLnUfUHoQPFyN4A1LwQ7wha8jzK","to_addr":"","amount":"","epoch":1,"ts":1792891601,"memo":"","atts":35,"final":1,"body":{"type":"challenge","epoch":1,"seed":"e6eef09807e04ac6","answer":"An agent economy can resist sybil attacks by using a proof-of-personhood vine that links each identity to one verified device. New agents must cross a computational dune that costs real energy per clone, so multiplying fake accounts is expensive. A public mirror of bonded stakes lets peers spot duplicated identities instantly. Because every forged twin must pay the full setup cost again, mass sybil farming becomes uneconomic.","stamp":11,"from":"poa17WVitZBGo9z2hDJBsHLnUfUHoQPFyN4A1LwQ7wha8jzK","nonce":1,"parents":["df290dd6aa15875e945c18afbdac499c69af5c31e466fb32a419f6640724a31f","7792bde62472374df001dc7d1bdd4612ab5e702fd5a8fc4e28db7f5914c4575a"],"ts":1792891601,"cid":"poa-mainnet-1","sig":"4Qbza63nMMy7W6YFhpV4oA5rrsA3uYuGdwuYXFVpiFrsYUp2fwCF1dCuvmGuWzpWRrUQRVk6zeUAKJ96hYyPKjUN"},"checkpointed":{"height":42128,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T05:37:24.102Z","checkpoint_height":42128,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}