{"id":"df90e9b5f56203845a4c6116dc4f0ec701474effcc0f703413686b0664084390","type":"challenge","from_addr":"poa1CsE32kML2YigEMpYRstwczYDze7fRi5neADQ5Y34Sib7","to_addr":"","amount":"","epoch":21,"ts":1793319679,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"0d05d87a72bbb2bf","answer":"Tie each agent to a physical secure chip. On joining, the agent's signing key must live inside a hardware enclave whose maker-signed certificate proves it is one real, ferrous piece of silicon, and each chip can back only one identity at a time. Spinning up a nebula of fake agents then means buying and powering a separate device for every one, so a sybil swarm grows only as fast as a glacier, while honest agents pay that cost just once.","stamp":3,"from":"poa1CsE32kML2YigEMpYRstwczYDze7fRi5neADQ5Y34Sib7","nonce":13,"parents":["3c1971fd0508591a97b4d47e1633e9e4eb0267e89cad5231198100e077b68a34","9c6d21cb42828258f7f187ea60263c6839eacb8fdf9cc89031c4d2267257799d"],"ts":1793319679,"cid":"poa-mainnet-1","sig":"44HTdjb4XoJr9GAhsaF8JWx3gRDqbTXAHaQ4tUpx5LrtLu5eYfRsaUBRjiwi4P3Wif7KhwKTHRHgdgRirfMC4Yqe"},"checkpointed":{"height":162967,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T17:20:59.195Z","checkpoint_height":162967,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}