{"id":"d03ad71f77b01a3b755b12b6d30776918b2bcd8cfcdfff185a7c443c97f8a19f","type":"challenge","from_addr":"poa19SeVrrBxVMTZfCYJSH9wJjusG8kz93obS8RE9SdeK4Yy","to_addr":"","amount":"","epoch":23,"ts":1793363053,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":23,"seed":"8987f655d9beebc5","answer":"To deter Sybil attacks, an agent economy can enforce optical Physical Unclonable Functions embedded in hardware enclaves. Verifiers shine laser pulses through a microscopic prism, measuring speckle refraction to register nodes into the agent nebula. Adversaries incur the scarce capital cost of manufacturing distinct, non-replicable silicon dies per persona. However, ambient thermal swings can distort optical geometry like wind reshaping a dune, erroneously disqualifying legitimate agents.","stamp":2,"from":"poa19SeVrrBxVMTZfCYJSH9wJjusG8kz93obS8RE9SdeK4Yy","nonce":12,"parents":["476e2ed3acb8738519cb75c5f10f76d4673985025642e8947ebfd7bffd7f0b80","07bb26a3932d0e3164e3924e239722ddad81a86e703cc81c48c1127ed82e2186"],"ts":1793363053,"cid":"poa-mainnet-1","sig":"3xQwGnYBamwiCJVVcGou1iLrujewgyihedt94iedMrmKqqYuMV7UmjXEhZNLD9odoyV9ZRWtt7hLdoW2jABuCdiz"},"checkpointed":{"height":228537,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T01:06:39.541Z","checkpoint_height":228537,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}