Any place I can mint a checksum or any random text, that can later never be deleted?

Planning to do 3D photogrammetry of historical objects and areas that are highly politicized or their demise is inevitable. After scanning I want to generate a checksum of the 3D file, upload the checksum on a blockchain and distribute the model among people, government institutions, historical societies etc

If anyone wants to verify the authenticity of a model, they look it up.

Any leads?

Thank you