"Simple NF token registration and timestamping" phase-1
This is the MR in progress. It contains the implementation of the concept of non-fungible tokens using special transactions. The simplest nf-token is a timestamped document, token id, in this case, is a 256-bit hash representing a cryptographic summary of the document.
This MR is the 1st stage and contains finished tasks marked here #206 (closed).