In this transaction, I transferred 2 BTC from my Coinbase.com wallet to an external address.
Why are there 3 outputs in the transaction?
I understand the output of 2 BTC, and the 0.0001 BTC transaction fee. One of the outputs is likely a change address. But I don't know what the 3rd output is for.
- combine unrelated user transactions into a single blockchain transaction?
- tracking user's funds or transactions off the blockchain (effectively commingling funds)?
- extracting its own fee from the transaction?