Run the ADL LRS Conformance test suite, search for conformant products. List your xAPI Conformant product. This service validates your LRS by running the ADL xAPI test suite, which can be found here.
Browse and search a list of products that have run the test suite successfully
A vendor can send you a certificate that attests to conformance to the xAPI. Use this tool to validate that the certificate is valid, and actually represents a successful test run
You'll need an account to list products or run the test suite against your LRS. Sign up below.