It's just base64, you can decode it anywhere to see what's inside:
```
{
"proofs": [
{
"id": "0NI3TUAs1Sfy",
"amount": 1,
"secret": "6j5ONV6WKi9S+yZisfSh4ZAY/zinuwFBS0MVt+POoRA=",
"C": "032ff63ef3de8e658a2cecb35097e5a05ff61e6bf6cd7734509b6db08028ea2fc7"
},
{
"id": "0NI3TUAs1Sfy",
"amount": 4,
"secret": "1dbvH2y8SuAjvwgJ7WQUIkvtq2mNnuxBFxzDAMCYxvU=",
"C": "03cae481b6285c9dc963e11b17c1f6e1b74dc0928151f5463079e51846699472b2"
},
{
"id": "0NI3TUAs1Sfy",
"amount": 16,
"secret": "jask5B1i3Esrb5SXQ0vjQde+iOugoXbdD3S6lDTwvTY=",
"C": "0314224839a27a8be99aa7a08bcbb3dfa46d9269b5803bbf348a25cd2ab1cbb4b8"
}
],
"mints": []
}
```
And yes, someone will need to know the mint to get the tokens. Your mints field is not populated. If you add the URL into that field and re-encode it as base64, it should pull automatically when someone tries to receive.