2017-07-15 UTC
# 
puckipedia so if I want to use above key to sign it, the header would look like this:
{ "alg": "ES256", "kid": "9b80748d", "typ": "JWT" }. I'm making a JWT, with above key ID, and algorithm ES256, aka "ECDSA using P-256 curve and SHA-256 hash algorithm"