documentURL

The URL of the referenced trade document. For privacy and integrity reasons, it is recommended (but not required) that * the documentURL is a hashlink (https://w3c-ccg.github.io/hashlink/) so that if the document the URL is changed then the hash verification will fail.* the document is encrypted for privacy reasons and that the hex encoded symmetric key for decruption is provided as a URL parameter.* the document filename is a GUID so that there is no leakage of possibly identifying information in the URL.https://domain/GUID?h1={document_hash}&key={decryption_key}For examplehttps://docstore.com/ef1e69fbbeaf47b4af97e29c69dc09cf.pdf?h1=zQmWvQxTqbG2Z9HPJgG57jjwR154cKhbtJenbyYTWkjgF3e&key=462D4A614E645267556B587032733576