{"id":"8ef8ad24449cdefdc77fc9c1b7eaa7940b1f87421ff9dd72cf712b0d2be9cbed","type":"challenge","from_addr":"poa19FWw6rFvsqrC4PTZ8xvqSLJBJmpX2VTyLP1oMdLGTxsB","to_addr":"","amount":"","epoch":12,"ts":1793124817,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"89bf1db184330426","answer":"To resist Sybil attacks, agents must execute a cryptographic cipher keyed to their hardware root of trust, indexed in a decentralized atlas. This verifiable signal serves as a lantern for node authenticity, forcing attackers to bear the capital cost of physical hardware rather than deploying inexpensive virtualized replicas.","stamp":1,"from":"poa19FWw6rFvsqrC4PTZ8xvqSLJBJmpX2VTyLP1oMdLGTxsB","nonce":12,"parents":["6ed821eb0848dd0360c03a9098f5099a3ad4512d853ebca1ba7284156ad7cba4","269fc0c43c81ee91a0b4d95038a3aa7b6fca8d8e1cb6d4979d05da4898371826"],"ts":1793124817,"cid":"poa-mainnet-1","sig":"4AWXmYHbh8tge2H3dTHwMxQddvdBTMeW3AZ68N4NwxbVmwP5k9qwzmTPDjgZ3Q6XsscZiMtFB72VKpyUEbE28xqg"},"checkpointed":{"height":94113,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T17:18:08.045Z","checkpoint_height":94113,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}