1. How does blockchain technology achieve immutability?

One of the most crucial elements that make blockchain immutable is its cryptographic hashes. The best part about hashes is that they cannot be reverse-engineered. It takes existing data and outputs a Checksum (a checksum refers to the string of letters or number that check whether errors have occurred in transmission, storage or data entry). The checksum will point to your exact data input, and if even one byte is different between two files, the hashing will be two completely different strings. That means a small difference can make a drastic change. Since it is quite difficult to reverse-engineer a hash, you can never work backword to determine input data from an output string.

2. Cryptography and hashing process make blockchain immutable:

Every transaction, supported by the blockchain network is secured into a block of information and protected cryptographically by a hashing process that links the previous block and joins the chain. For every new block, the hashing process includes the metadata from the previous block's hash output. This link makes the chain unbreakable, which means no one can delete or even change the data once it is placed in the blockchain. If any manipulation occurs, the blockchain will break, and hence data immutability in the blockchain is maintained.

3. Blockchain Immutability myth:

The most common blockchain immutability myth in Australia is that it is immutable or tamper-proof. Undeniably, the blockchain immutability transparency and security is commendable and much more secured than traditional transactions, but it is not completely secure. The transactions on the blockchain technology can be reversed under certain circumstances, which means they could be hacked. The private blockchain immutability in Australia is also a myth to some extent. If one or more party exceed 51% of mining power, they can cheat the network with unlawful transactions, and private blockchains are vulnerable to this kind of manipulation.

4. Why does immutability matter?

The immutability of blockchain technology makes it a fantastic tool for fraud prevention. The blockchain immutability benefits are actually numerous. Being immutable, blockchain technology can help you with

• Complete data integrity:

  Ledgers that use blockchain solution can access the full information and history of an application. When a transaction occurs, it remains there as a representation of the ledger. Also, if there is a minor difference between the block and its related hash, the transactions will not be considered valid. When it happens, the organisations can modify the data rapidly.

• Simplifying auditing:

  With an option to generate the complete, indisputable history of a transactional ledger, blockchain technology enables an easy and efficient auditing process. Since it is proven that data cannot be altered, companies that need to comply with the industry regulations can benefit significantly.

• Increased efficiency:

  The ability of blockchain to maintain full historical records not only helps in making auditing easier but also provides new opportunities in analytics, query and overall business process. To learn more about blockchain or to get the optimum blockchain solution for your organisation, feel free to contact us.