Is there something in Monero transactions that can tie them together in this scenario:
- send some non-private crypto to an instant exchange
- exchange it for monero
- withdraw the monero
- after some time send some monero to that same instant exchange to exchange it for some non-private crypto
Would the instant exchange have a way to determine if the two transactions are connected to the same wallet (amounts being different)? What time difference between the 2 transactions would be sufficient?
I wouldn’t say no but the chances are very slim of exchanges linking transactions back with different amounts and timing. As far as time difference it depends on the size. Exchanges don’t care about small transactions. I personally would’t use the same exchange twice and avoid linking funds to any KYC accounts if possible.
And be careful using these instant swappers some have asked for KYC from users just because they are buying or selling XMR. Use Clockswap.io my go-to since tradeogre/eXch got seized. They don’t use API of CEXs and got their own pools.