Woven into the Task architecture is a combination of blockchain ledger storage and hash encryption that ensures data stored in Task is immutable and cannot be altered. That means the reporting you see with task is always based on the real that was collected.

A "one way hash function" is an algorithm that turns messages, text, files and other data into a fixed string of digits. The "one way" means that it's nearly impossible to derive the original data from the hash string. 

This created a digital signature of the original file, which can be stored. If you wish to check that the file or data you are looking at has not been changed, you simply rerun the hash function and it will produce the same "digital signature".

For Task customers with a Professional account or higher, Task uses a combination of blockchain ledger storage combined with these hash values to store your data. This is the workflow: 

As a consequence of this workflow, the Hash values are immutably locked inside the Blockchain ledger - and Task is able to perform reverse data checks. If any data is alerted, the Hash value in the ledger will no longer match - and we know the data has been compromised.

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