Stored SHA-256 keys match for all 70 EEG sample files in OpenNeuro ds006222 v1.0.1 and ds007509 v1.0.3

We tested whether two OpenNeuro releases supply independent EEG records. All 70 sample files have matching stored SHA-256 keys and byte counts across ds006222 v1.0.1 and ds007509 v1.0.3. All three tested byte ranges match in every pair. Complete downloads of 12 pairs also match the stored keys. All 70 header pairs differ as files. Their checked sample layouts match. A split by dataset ID shares every test sample key with the training set. The package gives a file-pair table, a split check tool, source records, and repeat instructions. The result applies to these fixed releases. It assumes that source keys describe untested bytes correctly. We did not train a model or measure model performance.

EEG · OpenNeuro · SHA-256 · data integrity · dataset overlap · train-test leakage · reproducibility · psychomotor vigilance task