I just heard of PAC-ID for the first time:
"A PAC-ID, which stands for Publicly Addressable Content IDentifier, is a globally unique identifier that operates independently of a central registry. It resembles a URL and serves to reference substances, devices, consumables, or measurement results." -- https://github.com/ApiniLabs/PAC-ID
Last updated: Jan 09 2026 at 14:18 UTC