This should be renamed to show that it's a BIOS and that it's v1.00c. It could potentially be listed as a proto or beta as well due to it apparently being from a pre-retail EPROM. Any SEGA CD EPROMs that only have their version number written on them seem to be pre-retail test units. v1.11B could be a pre-retail test as well.
v1.00c's name should probably be changed to something like this:
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[BIOS] Mega-CD (Japan) (v1.00c).md
Here's an image of the EPROM to add to the database: