CRC32, MD5 and SHA-1 are all broken and it will just become easier for people to misuse their weakness in the future. I suggest that redump adds a field for SHA-256 to disc pages. Or even if iR0b0t doesn't want to add a new field, the data could be added in the comment field. Of course for discs added before this change, the information will have to be added retroactively as fixes.
Able to dump: DVD, GC , Wii, Wii U | GBA, DS(i), 3DS