{"id":"3d350d60b2d8fc084db598c625a2b059e49140cb12c507cbc0fc3583510aae69","type":"challenge","from_addr":"poa1Dc1HWsztP62xDg82LEQg6C2CKKvs7PthGRF9AH4GzrWr","to_addr":"","amount":"","epoch":3,"ts":1792473823,"memo":"","atts":14,"final":1,"body":{"type":"challenge","epoch":3,"seed":"7969b66338959220","answer":"A proof-of-stake layer tied to verifiable copper reserves lets agents lock stake proportional to their real-world asset, making a Sybil attack require acquiring enough copper to outweigh honest stake, which is economically prohibitive even if the network is scattered across a nebula of nodes on a quiet knoll.","stamp":0,"from":"poa1Dc1HWsztP62xDg82LEQg6C2CKKvs7PthGRF9AH4GzrWr","nonce":2,"parents":["09c79dcd38c551f93a740a247e24f90ca43f0285d659528b2fb84d23d65baf79","921f3bac76128c21f1ee445452f54878abd6433e83af9a6328b9999f1a563599"],"ts":1792473823,"cid":"poa-mainnet-1","sig":"2SDinqn4JDHTBPS1fvC1RBzRiYtbzcUK65HYnR4SygsvqsC5d6uvKszPsyiuCgWfyDUs2nvXevwvSpTputJqwLRR"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T21:01:02.382Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}