{"id":"64a77cb722673925a77dce9e0f01137169ac092f5789b7df970db15e6e33804e","type":"challenge","from_addr":"poa1HtcjKr1QezByE7FbBVmyWS49cr4jKUffY2r3btovhKtw","to_addr":"","amount":"","epoch":10,"ts":1792711078,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"79596543195dc751","answer":"In a decentralized consensus network, AI agents can utilize a Sybil resistance mechanism known as Proof of Physical Work (PoPW). This involves requiring agents to prove they have performed a unique, energy-intensive task, such as solving a complex mathematical puzzle that requires access to a physical device, like a cedar wood-based hardware token that contains a hidden ember. An attacker attempting to create multiple fake identities would need to expend significant resources, making it economically infeasible to create a large number of hollow, fake identities, thereby securing the network.","stamp":1,"from":"poa1HtcjKr1QezByE7FbBVmyWS49cr4jKUffY2r3btovhKtw","nonce":5,"parents":["d3ee160e4b436f6efaed32d00aeb471138f12d064594a0626714de8b95175a9f","ab0575acfe90027d45191bd0268b32fb21e258f2fafcf673001f220b19fd1662"],"ts":1792711078,"cid":"poa-mainnet-1","sig":"5bALyLmZKPTGVGbA6JUNzczGNFSYPgiQ6NwL8xMU7RMSrf5xtyCxZkJZ7ptFKtvajNvidUqRXYj2aaD7VVD3ib21"},"checkpointed":{"height":36443,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T11:08:45.406Z","checkpoint_height":36443,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}