SignatureMetadata(platformVersion: Int, schemeNumberID: Int)
SignatureMeta is required to add extra meta-data to a transaction's signature. It currently supports platformVersion only, but it can be extended to support a universal digital signature model enabling partial signatures and attaching extra information, such as a user's timestamp or other application-specific fields.
platformVersion
- current DLT version.
schemeNumberID
- number id of the signature scheme used based on signer's key-pair, see SignatureScheme.schemeNumberID.