Blockcerts vs Canvas Credentials

Blockcerts is an open standard and open-source ecosystem for creating, issuing, receiving, and checking blockchain-based credentials and official records. Its intended settings include civic records, education, professional licensing, and workforce development. Recipients can use the Blockcerts app to receive, import, keep, and share credentials; a private passphrase supports ownership and recovery. A universal verifier checks records independently and can be incorporated into other software. Developer resources include Python tools for creating and issuing credentials, a JavaScript verification library for Node.js or browsers, and a standalone web verifier. The issuer library supports Bitcoin and Ethereum, while the standard is designed to work across blockchains. Verification checks issuer signatures and certificate data, including expiry and revocation. Issued certificates cannot be edited, though an issuer can revoke an incorrect one or issue a replacement batch. Blockchain data is a one-way hash of certificate information. Blockcerts is free; Bitcoin batch issuance may incur a variable network transaction fee.

Canvas Credentials has no write-up on Specifiction yet; its figures are above.