{"how":"Verify a receipt's `signature` (base64url, Ed25519) over the UTF-8 bytes of its `signed` text with the key whose `kid` matches the receipt's. The first key is the current one; the others signed older receipts and stay published.","keys":[{"alg":"Ed25519","kid":"sc-89d6d74d3ab3","public_key":"Ocw5yq3Q7R35ERW5fPVrSJb4cZCBbj_DdsBhXsigAUg"}],"provider":"sharecut"}