Utxo’s are unspent pieces of Bitcoin. Like having a $20 and a $5 bill in your wallet. You DONT have $25 you have 2 separate bills… you must use 1 or both to spend them. They are a “Digital bill” that has not been spent yet ❤️
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And the key here is… more utxo’s in your transaction when you send the BTC later, to buy hodl butter, the more expensive it may be depending on demand. Sat/vb. Always check mempool.space transaction fees before consolidating.