- After 12ngg3CB9VDvkbFDx7JKY92i9kYgDmiEaj received the first transaction (0.09481172 BTC) you/he sent it immediately to 36ii5gNkZw2vAZ8TVk9dYXtVVbJxk68hiE which belongs to your Coinbase account that surely reflects as balance.
- Now that you're convinced that it is "legit" you've sent the actual amount that you want to move to coinbase (0.62574 BTC) to 12ngg3CB9VDvkbFDx7JKY92i9kYgDmiEaj again.
This would require the coinbase app to be compromised, right?
How can I get my funds?
Based on what I've read so far: you can't.