Certificate fingerprint using the SHA256 digest of DER-encoded version of certificate offered by the server. For consistency with other hash values, this value should be formatted as an uppercase hash.
@example 0687F666A054EF17A08E2F2162EAB4CBC0D265E1D7875BE74BF3C712CA92DAF0
public const TLS_SERVER_HASH_SHA256 = 'tls.server.hash.sha256';