Datum

Datums in UTxOs can be stored in two forms: inline datums or datum hashes. When there's a hash, we need to provide a datum corresponding to this hash, which can be done by either providing the value literally, or using a reference input where it is stored inline. The latter is not supported, since we haven't seen it in the wild - you can work with the datum of a reference/other input directly. Please open an issue if you need it.