Blockchain is very popular these days as a database that is extremely resilient to data changes or unwanted intrusions.
No change of data in a blockchain database can be done without leaving a trace. That’s why they are used for the most sensitive types of information: private data, and transactions.
We at oqtacore have build a large cryptocurrency mining platform, FlyMining.
You can read more about blockchain at FlyMining blog: https://flymining.cloud/blog/introduction-to-blockchain/