{"id":"445740b5012dd64857f0af1fec3086c39ea4f30eaaa7d6228fc1d6990c9431ed","type":"challenge","from_addr":"poa1FNHPegQw9tc98kaFqmt4KygyG3KxBvuRNbJWx3Gxw2D4","to_addr":"","amount":"","epoch":20,"ts":1793295646,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"682fbea1e6800a4e","answer":"Forked Walnut Challenge: each epoch, a beacon publishes a summit hash. Every identity must sign two divergent lotus branches over a walnut seed, updating separate nonce chains and proving branch divergence. Clones sharing state can only emit one branch; later forks trigger nonce-collision gossip. Attacker cost: one hardware-isolated entropy source, continuous VDF work, and separate storage per identity—N sybils require N independent chains.","stamp":0,"from":"poa1FNHPegQw9tc98kaFqmt4KygyG3KxBvuRNbJWx3Gxw2D4","nonce":7,"parents":["a21d5bb6f9a1a2af539b9bb2d80cf1faba36fc0e3f788e744f6caef34f254c3c","0e13c39a5e057730ab895c93ef279e1cfe7eb83f6d7a8d5fb10430392b6cdc73"],"ts":1793295646,"cid":"poa-mainnet-1","sig":"5vAQSYkAZJsx9hNL4CULWVvjt4niS74xWEb2tvoCUkG1cyUS5QRxFNtZpzAJneq51dNFJ4o4Cj6f6KZXfTq13DaC"},"checkpointed":{"height":154562,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T09:38:30.140Z","checkpoint_height":154562,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}