It is only immutable and immune to manipulation while there are enough miners, and there are no hard forks. While it may look good now, there is a non-zero cha

It is only immutable and immune to manipulation while there are enough miners, and there are no hard forks. While it may look good now, there is a non-zero chance it will disappear within 5 years for some reason or other. So if your data is really important, better make a backup copy of it somewhere safe, like in B2.