The COPYING files in the top directory of each HDF5 source code release contain the copyright information.
The HDF5-1.10 COPYING files can be seen below. They will not change from release to release:
What copyright notice is required for other language bindings? If we were to create a set of language bindings in Ada, for example, what attribution/disclaimer would we need to provide?
In terms of the copyright notice, other language bindings should be treated as any other application, program, or code that uses HDF5. If creating a set of language bindings, the HDF5 Copyright Notice and License would need to be included or provided with that source code. An efficient way to do this would be to include the HDF5 COPYING files from the HDF5 source code.