Putting this kind of metadata inline with your hashes is the entire point of multihash:
> Multihash is a protocol for differentiating outputs from various well-established hash functions, addressing size + encoding considerations. It is useful to write applications that future-proof their use of hashes, and allow multiple hash functions to coexist.[0]
> Multihash is a protocol for differentiating outputs from various well-established hash functions, addressing size + encoding considerations. It is useful to write applications that future-proof their use of hashes, and allow multiple hash functions to coexist.[0]
[0]: http://multiformats.io/multihash/