The Enjin Explorer (EnjinX) uses a numerical counter for assets.

Rather than requiring you to track all of your tokens' corresponding numerical identifiers, we've made it easier to dynamically link to assets by appending the 66 character token identifier to the asset URL: https://enjinx.io/eth/asset/.

 

Example

The Monolith's numerical identifier is 0x7000000000000002000000000000000000000000000000000000000000000000, with 7000000000000002 being the Token ID of the asset.

Appending the Token ID of the asset to the URL provided above, gives the following: 
https://enjinx.io/eth/asset/0x7000000000000002000000000000000000000000000000000000000000000000

By linking these two parts together, you will enable your users to view and share their assets via EnjinX.