Sandbox
The Issuing API sandbox environment provides a few conveniences to make development, inspecting, and experimenting with the API easier.Bypass Signature Verification
In the sandbox environment, authentication without signature verification can be performed simply with HTTP Basic Authentication. To make a request using this convenience method, simply pass your access key directly into the username field, no password or signature is required.Authorization: Bearer is present in a request, request signature verification is enforced as normal.
In production environment, request signing via Bearer token is required.

