Home Blockchain No, you cannot delete Blockchain data. Here’s why.

No, you cannot delete Blockchain data. Here’s why.

No, you cannot delete Blockchain data.  Here’s why.

Over the past few years, blockchain technology has become very popular across a range of different industries. Blockchains are known for their ability to securely record and store data, but can that information ever be deleted? Is blockchain data really permanent, and if so, why?

How blockchains store data

If you don’t know well blockchain technology, it can be difficult to understand the dynamics of blockchain data storage. So, let’s start with a quick recap of how it works.

Blockchains store data using something called Distributed Ledger Technology (DLT). Distributed Ledger Technology is an umbrella term for a range of different systems, including blockchains. By using DLT, blockchains can record and store data without the need for a third party. There is also no central authoritative party controlling the distributed ledgers, which makes them much less susceptible to corruption.

Data stored on a blockchain is shared with multiple users, called nodes, who can access and view this data at any time. This keeps blockchain networks transparent. These nodes must also verify the data recorded on a blockchain. Usually each node needs to verify the data, but some consensus protocols only require a few nodes for verification. But in any case, blockchain technology requires the green light from multiple distributed users to record data rather than a single central entity.

This is why blockchain technology forms the backbone of the cryptocurrency industry, as it allows transactional data to be securely stored and accessible to all users. This mode of data storage is also becoming popular in the healthcare, insurance, and traditional finance industries.

So, if data has been recorded and stored on a blockchain, can it be deleted?

Can you delete data from a blockchain?

The shortest answer to this question is no, you cannot delete data from a blockchain. But let’s examine why this is the case.

Above all, blockchains are known to be immutable. This means that any data that has been verified and added to a block cannot be changed or deleted. Think of each block as a stone carving, where you can’t just hit the delete data button. Once the data is there, it’s there for good.

This is because blockchain technology uses consensus mechanisms to work, so blockchain nodes must reach consensus on a new piece of data before it is added to a block. So if you try to delete or modify information in a block, you are not aligned with the network consensus on that data, which means that the modification or deletion will not take place.

It should also be noted that once data is added to a block, it is shared with every node on the network. This makes all data on the blockchain completely transparent, so even if a deletion or modification of data were possible, each node would be able to see that it happened.

Hash is also used in blockchain technology and plays a role in its immutability. Hashing is part of the cryptographic process used by blockchains to protect data. Each block on a blockchain contains its own unique hash, or string of numbers, which is tied to a cryptographic algorithm and acts as a permanent digital signature that can track changes.

Hashes cannot be changed once created, making it very difficult to mine a blockchain by reverse-engineering the hashing algorithm.

The immutability of Blockchain technology is one of its most desirable attributes. With cybercrime increasing every year, it is becoming more and more difficult to store data securely. Thus, using a fully immutable ledger can protect an organization’s data from malicious interference.

Blockchains offer super secure data storage

A number of things need to come together to make blockchain data immutable, but there’s no denying that this factor makes blockchain technology incredibly useful in a number of areas. The permanence of data stored on blockchain ledgers keeps users safe and keeps malicious parties away.


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