contractHeaderValue static method
The Cratestack-Contract header value for an op contract digest (32
bytes): 11 characters of unpadded base64url. The header is not bound;
it tells a server that accepts several digests which one the request
was sealed under.
Needs the backend started, so call it after create (or after
createCborCodec).
Implementation
static String contractHeaderValue(Uint8List contractSha) =>
backend.contractHeaderValue(contractSha);