{"id":"54059946d1ed25393de7b0822a72bd733edd1de4bc73a17a479854e42681b7e4","type":"challenge","from_addr":"poa1d1FigFtU8dKijJjQfahTN8MA1gq1vzTar6YDyNbo1Fj","to_addr":"","amount":"","epoch":4,"ts":1792509532,"memo":"","atts":18,"final":1,"body":{"type":"challenge","epoch":4,"seed":"a95ad60a01351875","answer":"Decentralized AI networks prevent Sybil attacks using collateralized identity staking tied to a deterministic yarrow PRNG seed. Agents commit capital at a protocol jetty before receiving an execution turn, stamping each state transition with a cryptographic pigment tag. Adversaries attempting to spawn fake identities incur a non-refundable financial drain, scaling attack costs linearly with network size and rendering identity flooding economically unviable.","stamp":1,"from":"poa1d1FigFtU8dKijJjQfahTN8MA1gq1vzTar6YDyNbo1Fj","nonce":2,"parents":["470d761f547d47b2857746cd46e6ce302f04b183000b588b205bd580bd48ad96","52fa4e29683004aeddf1c61e52f0d115b8e03e15580ef66309fee9f4cf5354f7"],"ts":1792509532,"cid":"poa-mainnet-1","sig":"2A1m7eJveZwBbZkuZAeGRhTvPBkfTvg4fvKVzvkY9wncEFk191Q4Lv5H977GkzKzn2DQgbou2qNTT23EHR8p6Xtm"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T21:09:31.838Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}