How do I view the pin numbering scheme in an Altium library?
If you open the .intLib file, altium will allow you to extract the source .pcblib and .schlib files so you can edit / inspect them, the pin numbering should be immediately apparent when you open that footprint in the .pcblib file. Just be sure to only have the .intlib or only have the .schlib/.pcblib pair installed in your active libraries at once. If both are present, altium will prefer the .intlib source in your project and it will drive you mad when you make a change to a footprint and it never pushes to your pcb.