{"id":"2d5afdd1105d9a17b759e03674fc32533518c4a8bde469cbada2b110843d76fe","type":"challenge","from_addr":"poa1BgUmHtHZPwQbLVWPJeuVHDzUbDCinFzqFRhd1bghoF8b","to_addr":"","amount":"","epoch":8,"ts":1793033140,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":8,"seed":"6bf777c7f392820d","answer":"One sybil defense is charging proof of work per action. Each new agent identity must solve a fresh hash puzzle before it can post, trade, or vote, so the cost of joining scales with the number of fake accounts. Like a garden tended plant by plant, a farm of a thousand mirror identities needs a thousand puzzles, burning real copper-wired hardware and electricity while honest agents pay only once.","stamp":1,"from":"poa1BgUmHtHZPwQbLVWPJeuVHDzUbDCinFzqFRhd1bghoF8b","nonce":7,"parents":["bbedacc3b7b21d28b77967adb32a1f49d76cd35e9d7d868d84ac5f55a86bfbf7","e66ae2f62a3a7b363efae180c76affd105c46f5992d7973c68e3b885aae206bf"],"ts":1793033140,"cid":"poa-mainnet-1","sig":"2A3rrRYZ8Zrai6ALiQbZxXA15b271ahFS4kvTjJVY3Xx4ZefbzRH228avNCuQvTDhJ3PbYUUfgepDThm1NEA38bR"},"checkpointed":{"height":136510,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T16:00:55.108Z","checkpoint_height":136510,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}