Every Pando Package has a unique URL that identifies the package. The Pando Package URL is output by the Pando Command Line when a package is published.
C:\pcl>PCL publish --username=jgcameron --password=titanic --pandofile=AuntDana.JPG.pando --sender="J.G.Cameron" aunt-dana.JPG
Might return a package URL such as:
A typical Pando Package URL looks like:
http://cache.pando.com/soapservices/Package/package.pando
?id=5A4A7B2AE83E0AA3DAF066C28703C6F3132B0633
&key=3557F2AAD6CEAEC0FB6B1F1E19C7531A116A1C2B209554FC9343F2A6ED9DAC94
This URL is then used throughput the Pando APIs to identify the package.
The first part of the URL identifies the service that is being used to deliver the content. This may be different for different types of content. The id is the unique identifier of the package in the Pando network. The key is the encryption key of the package. By giving a complete Package URL to a recipient, you are giving them the ability to download the package and access its contents.
Note there are some cases, such as when integrating Pando into an application, that you may wish to separate the package ID and key and communicate them separately. For example, you could distibute the package ID freely, such as on web pages, and communicate the key through a secure channel, combining the two to allow authorized recipients to download the content.
The Pando Package URL is available for consumer-generated packages by using Pando's "send to web" command, and copying the "Download Link".

Select the text in the "Download Link" field.
If you have already sent the package, you can get the Pando Package URL by viewing the package info by selecting the package and clicking the "info" button, which displays this dialogue:

Here's a simple shortcut to getting Pando Package URL's: select the package in your Sent list, and select Copy from the Edit menu (or hit control-C on Windows, or command-C on Mac).