It looks like you've made a successful Bitcoin trade with a 43% gain over the past three days. However, you want to clarify that this particular trade isn't part of the Bitcoin trading challenge that started today. Here's a polished version of your message:

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If you've been holding our first $BTC entry like I have for the past three days, here you go—+43%! 🎉 Please note that this trade is not part of the $BTC trading challenge we began today. Thank you! 😊

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Would you like any adjustments to this message?