I have to record cap gains this year and haven't had to go through my transaction history before. As far as I understand I can just upload all of my wallet addresses to Koinly and they'll sort the transactions, record cost basis and total gains. Is there any reason to be hesitant about giving out my wallet addresses and my Coinbase account?

Long story short, like an idiot, I purchased BTC through Coinbase while I was still figuring out what it was. I bought a bunch, moved it to my trezor, and then deleted my Coinbase account as I was going to let it sit. Yes I'm also here in the future to agree that this was remarkably stupid to do. I have a "new" coinbase account, that I have since moved BTC to, and sold. How can I go about finding my cost basis from my original Coinbase account? Or can I?

PS I can find the transactions, but I don't understand what the "input" and "output" are. There's a "witness" that looks like a wallet ID but I have no clue what it is nor if it was mine.

The diamond hands that everyone has been waiting for are here. Skin is officially in the game. Bought at just under 69k.

Was thinking about waiting for bitcoin to hit 50-60k but figured I'd drive myself crazy. Instead just pulled the trigger. Should have bought when it was 60k but it's impossible to time anyway and lump sum beats DCA. Think it could go down further to around 45k later this year but we'll see. I don't want to worry about it.

Plan is to HODL BTC for 10-15+ years, but I wouldn't be opposed to taking profits and reinvesting again on a downswing. Do we think it was a good buy or I should have waited until more is played out here?

If it makes anyone feel better I already maxed out my 2026 Roth.