I'm trying to setup a investment management app/program. Ledger doesn't provide any means to export a file so for transactions already completed I have to manually input them.

When looking at a transaction in ledger wallet and trying to locate my address (it generates a new address for each transaction, but I'm sure you guys know this) I see two addresses in the 'To' section. How do I determine which address it is and why are there two? I thought btc addresses where all the same length, in some transactions it looks like two addresses and one is longer than the other?