# Circle, USDC and TEAL

You could use a buffer account. If you accept the risk of payments being reversed, you could use a USD payment into a normal fiat account, on the callback drain the equivalent amount from a USDt/c buffer. When necessary, you would then top up the buffer using any method you choose.

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# Asset URL max length (how to link IPFS)

As to proposing the change, maybe chatting with algorand on discord is a good place to start?

I could easily be wrong about the note being changeable… I think I made an assumption about that so its worth checking. If it is not changeable then no-need for the hash I guess. Another way is to split the hash into two and place the first part in the URL and the second part in the metadata hash……

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Hi - there does not seem to be a perfect approach to this - at least that we’re aware of. At [dahai.uk](http://dahai.uk/) we write the IPFS uri into the note field of the asset when it is created like this: ipfs://gsdfgsdfsdfgsdfgdfgsdfwhatever/ We then take a 32 byte hash of this string and put that into the metada…

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# What is the easiest way to reinvest staking rewards?

You could also use the auto rewards compounder: [Dahai](https://www.dahai.uk/defi/dahai-rewards-compounder)