DIDPeer4

The names of the product elements

The name of the type

To “contextualize” a document:

• Take the decoded document
• Add id at the root of the document and set it to the DID
• Add alsoKnownAs at the root of the document and set it to a list, if not already present, and append the short form of the DID
• For each verification method (declared in the verificationMethod section or embedded in a verification relationship like authentication): - If controller is not set, set controller to the DID

• 1. JSON stringify the object without whitespace
• 2. Encode the string as utf-8 bytes
• 3. Prefix the bytes with the multicodec prefix for json (varint 0x0200)
• 4. Consider this value the hash

• 1. Take SHA2-256 digest of the encoded document (encode the bytes as utf-8)
• 2. Prefix these bytes with the multihash prefix for SHA2-256 and the hash length (varint 0x12 for prefix, varint 0x20 for 32 bytes in length)
• 3. Multibase encode the bytes as base58btc (base58 encode the value and prefix with a z)
• 4. Consider this value the hash