I don't think someone would tamper with such data on purpose. They wouldn't gain something from that. But by mistake it could happen. We could write a script that does some random validation for each symbol dataset, with live api data. The availability of good quality free dataset for crypto is really a problem. Either you pay for some expensive api or do the import yourself like jesse does. Thats fine, but time consuming and sometimes like already discussed here in the forum there are annoying gaps and missing volume. I like the idea of having a big dataset, thats validated, cleaned and free 😅 just import and start having fun.
Some big data experts here? In my last company we used Kettle to validate, analyse and manipulate big data. Sadly I only worked a little with it.