- From: Manu Sporny <msporny@digitalbazaar.com>
- Date: Thu, 31 Mar 2022 11:04:21 -0400
- To: public-credentials@w3.org
On 3/30/22 8:11 PM, Shawn Butterfield wrote: > Is it truly just the CBOR-LD VC Doc or is it a CBOR-LD Verifiable > Presentation (wrapped VC) that was serialized into a QR? I'm admittedly > "new here" so still learning, but wouldn't interoperable verification > software need the bundle as a verifiable presentation, not the standalone > credential? The only QR Code format that VPQR outputs at this moment in time is a Verifiable Presentation. That said, there's nothing particularly wrong with encoding a VC in a QR Code... we /could/ create a "VC1-*" QR Code format for bearer tokens (movie tickets, venue passes, etc.). However, putting the VC in a VP costs something like 4-8 bytes in the CBOR-LD payload, so you don't save a ton of space by NOT putting it in a VP. I will note that once you have an Ed25519 signature on the VC, you have around 80 bytes for payload (which is quite a bit if you're using JSON-LD types), but is not a ton of space if you have a lot of URLs or strings in your payload. That said, we've been able to get some pretty important VC/VP use cases working w/ some fairly low-end scanner hardware and bad lighting conditions in the field. -- manu -- Manu Sporny - https://www.linkedin.com/in/manusporny/ Founder/CEO - Digital Bazaar, Inc. News: Digital Bazaar Announces New Case Studies (2021) https://www.digitalbazaar.com/
Received on Thursday, 31 March 2022 15:04:41 UTC