Add ISCC to multicodecs table (#252)
Add ISCC to multicodecs table (#252)

The ISCC is similarity preserving identifier for digital content. An ISCC is derived algorithmically from the digital content itself, just like cryptographic hashes. However, instead of using a single cryptographic hash function to identify data only, the ISCC uses a variety of algorithms to create a composite identifier that exhibits similarity-preserving properties (softhash). For an implementation of code `0xcc01` see: https://iscc-core.iscc.codes/#quick-start
multiformats/multicodec