QHash

It is a different kind of Hash :-)

IPFS is a content addressing system. That means, it does not use regular IP addresses to locate a document. Instead, it hashes the contents of the document and that hash is cleverly used by IPFS to locate the document on the Internet. A hash therefore is a cryptographic strong checksum of the contents.

In our documentation here, we use the term QHash because usually, it starts with the letter "Q" (but that is not mandatory. It can change in the future)

What is an "Earlier Qhash"? An earlier QHash is simply that QHash that was produced in an earlier pinning of the website. If you want to switch the website to an earlier version, then you can simply go to the last page of BushFire and then use the QHash of the earlier pinning process, and follow the instructions. You will be able to restore the website back to that previous (aka earlier) version.