JSON array of objects for params

[brunocalmels]

I'm proposing a different parameter scheme, allowing for different addresses in different chains. I'd rather go for an array of objects, such as:

[
    {
        "coin": "usdt",
        "chain": "ethereum",
        "address": "0xbeefeate9"
    },
    {
        "coin": "dai",
        "chain": "bsc",
        "address": "0xbeefeate4"
    }
    // And so on
]

[juampiq6]

I had thought of this and i wanted to make the paycrypto URI scheme compatible with the actual HTTPS URI scheme (https://datatracker.ietf.org/doc/html/rfc1738#section-3.3 and https://datatracker.ietf.org/doc/html/rfc2616#section-3.2.2) for reducing friction when implementing. But it would make sense to use json since its a lot easier to prepare a json and add it to the end of the url in its stringified form. I will investigate if there is already an standard version of using the json format in a URI