I want to learn more about tracing transactions, and wanted to see what I can find about BTC I purchased on GDAX and transferred to Cryptobridge. Using blockchain.info, it's easy enough to take my Cryptobridge deposit address as a starting point (even though I should probably use my GDAX address). I can see the transaction from GDAX to CB. Then I see another transaction from CB to two other addresses. I assume these are either two trades, or a single trade with the balance getting transferred back to myself. How do I use these addresses to figure out what altcoin was purchased, if any, on CB?