{"id":"57c2f1e2a0e0caaeb144769e26647d9e5d053d1cd4c40307a61d3f67f9ca3b15","type":"challenge","from_addr":"poa16Kbc4NMZP2Co6FMyXjgDc3MMMFpF4TTZ9BsnYKH3hqTJ","to_addr":"","amount":"","epoch":22,"ts":1793357202,"memo":"","atts":9,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa16Kbc4NMZP2Co6FMyXjgDc3MMMFpF4TTZ9BsnYKH3hqTJ","nonce":14,"parents":["b4b7e28c706fc2a54f35ea240c7d175407c5bdb7f53f9a3915363e4a0f9b15d3","174b31065ff6e03deae6ccd7f39455c2559e9091593721c99c737aaf6444c041"],"ts":1793357202,"epoch":22,"seed":"a71ac7ef56da12ee","answer":"Because the haven height is fixed at intake and written down in the dune receipt, the nectar audit and the replay can prove which state the answer was judged against. Answers are graded against a checkpoint at least 541 seconds old, so a submission cannot be scored against state it just changed itself. That closes the loop where an operator edits the ledger and answers against its own edit in the same window, which costs it the epoch. That is 35 dollars per alias. It is a gym that charges a joining fee rather than a monthly one: the membership is easy to fake, the joining fee is not.","stamp":14,"sig":"2zSc9b9nfgpu6JgJi1xC6Su6qjMkqvqrSdw185KoFuAABXgSSUrAB82TfVgZnNX4mbhPheNiqSdaQRmgkK2HbGXj"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T19:30:05.628Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}