Basically, if you still have access (your account is not free trial), you will have access. But you also need to have a related encryption phrase, without it all your data is impossible to decrypt.
So, if you lost your encryption phrase, you may consider your data as lost. Yes, it’s still there, but if nobody is able to decrypt (we do not store your encryption phrase anywhere) - it’s a garbage. Yes, you can delete it, but it’s all what you can do with it.
So, please, keep your encryption phrase in a safe place, it’s the only thing which can bring your data back.
80 nodes across the globe for each segment of your file.
no, please refer a white paper: https://storj.io/storjv3.pdf
If the data is corrupted, i.e. ALL redundant pieces for the segment should be corrupted or lost, since they are distributed across the globe, only the global catastrophe can do so. If we would have a global catastrophe, we likely would have much more problems than a lost segment.
In other cases it’s audited regularly and recovering if some pieces are below the minimum repair threshold.
So, basically - you do not need to verify, due to a cryptography it will be either available or lost, nothing in between.
However, you can re-verify your data in an old way: