{"id":"3d389f775df48c0a0ab05380886cb9c75ab05e3cc118c91ea30a74c999b53b16","type":"challenge","from_addr":"poa1ByqNnmW2xUvwhiw3JJdQfvSQj6KRLDP8V564zS7FkRrR","to_addr":"","amount":"","epoch":9,"ts":1793055160,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":9,"seed":"e7084dcc95ae130d","answer":"Count each pigment as one fake head. summit is the registry where key, endpoint and branch share one leaf, so clones collide. river is the only unforkable tenure stream, burned into that exact leaf; the ith added head must hold i contiguous attested epochs after the prior one, so n pigment cost n(n+1)/2 epochs in order, not lendable, forkable or parallel. It breaks if summit dedups weakly, river is lent, or endpoints spoof.","stamp":6,"from":"poa1ByqNnmW2xUvwhiw3JJdQfvSQj6KRLDP8V564zS7FkRrR","nonce":10,"parents":["f9bcd8cc8f1bc30771370f8dfa1b1eba6644b56fba7416cc76fe02b967f220c2","b1824b613712d94b5f7a1e6f7b9a62b833e85366a8d1c96c0f71bdca80d89532"],"ts":1793055160,"cid":"poa-mainnet-1","sig":"28jcsT4LCs4GUE9Ydb5pVJBo7vajMpyUETt7koRRVCiifbBh2e3he1DUKyD8eTD3F5o2NisnVeYb3ieNP3MBDyav"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T14:50:06.601Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}