A hash commitment fixes the content of a file without revealing it. Publishing the SHA-256 of each frozen input now proves those inputs existed and were frozen as of the commitment date — before any outcome was scored — while the files themselves stay sealed. The full inputs are revealed later (on completion of independent review). At reveal, anyone can hash the released files and confirm the digests below match, byte for byte.
These digests are also anchored in the Bitcoin blockchain via OpenTimestamps, giving an independent third party a time proof that does not depend on this site. This page lists what was committed and when — nothing about the contents or method.
sha256sum <file> at reveal, and compare to the value above.