Yes. I understood that. But often they ask the numbers of the transactions. I don’t trust them but I wish to know if someone could follow the movement of the transactions using the codes.
Codes? you mean the addresses? yes it’s possible to follow the trail for most cryptocurrencies which you can easily do on any block explorer e.g. blockchair.com but it does not mean it would answer the questions who and where as they're pseudonymous, not to mention scammers could also obfuscate their tracks. There are some block explorers that labels known exchange address for some coins, so if the scammer did not obfuscate their tracks before they sent the coins to an exchange, there's a good chance you can find that out.
It's worth noting that an average person has way limited resources (likely to be relying on public info/tools) compared to reputable blockchain analysis firms hence be careful with help gestures from strangers, it's most probably shady, and if they mean well, it's likely that they won't be able to do much for you.
