The taler scheme is currently being documented at https://datatracker.ietf.org/doc/draft-grothoff-taler/ and has been provisionally registered with IANA at https://www.iana.org/assignments/uri-schemes/prov/taler

GNU Taler is an open and privacy-preserving payment protocol, designed for online retail payments.

GNU Taler is an official GNU package.

The URI scheme was developed to enable Web sites to easily trigger interactions with the Taler wallet, which may run as a Web extension or as a separate App depending on the platform. taler:// URIs are suitable for being exchanged as QR codes, via NFC or Web links. Implementations exist for major browsers and mobile platforms. A design document explaining why taler should be on the safe list is at https://docs.taler.net/design-documents/039-taler-browser-integration.html

This commits adds the provisional taler scheme to the Safelist to ensure Taler wallet WebExtensions can register the handler.

• At least two implementers are interested (and none opposed):
  • Chrome: TBD
  • Firefox: Eric Rescorla just told me this was "not a priority for Mozilla"; others at IETF said whatwg needed to move first
  • WebKit: TBD
• Tests are written and can be reviewed and commented upon at:
  • Doesn't seem applicable.
• Implementation bugs are filed:
  • Chromium: https://bugs.chromium.org/p/chromium/issues/detail?id=1386255
  • Gecko: https://bugzilla.mozilla.org/show_bug.cgi?id=1801423
  • WebKit: https://bugs.webkit.org/show_bug.cgi?id=254497
• MDN issue is filed: …

(See WHATWG Working Mode: Changes for more details.)

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