Written by Emaad

On April 17, 2020

What is immutability?

Immutability is a major value proposition of the blockchain. Traditional, centralized computing often presents hackers with multiple security vulnerabilities they can exploit to alter and/or access user records. In decentralized computing, data can be hashed onto the blockchain and secured across a globally distributed computing network, thereby eliminating the risk present when storing billions of user records.

Other blockchain lessons:

The history of money

The history of money

What is money? Money is a technology that has been as essential to the development of civilization as the wheel itself. Money is any good that is widely accepted as a medium of exchange during the transaction of goods and services. It facilitates commerce by serving...

What is a blockchain?

What is a blockchain?

What is a blockchain? Distributed ledger technologies are based on a concept known as blockchain. The term “blockchain” refers to the basic structure that is a chain of blocks. The “block” in a blockchain is where transaction records or various pieces of information...

What is cryptography?

What is cryptography?

What is cryptography? Cryptography is the study of secure communications. The etymology, or word origin, reveals much of the meaning behind the word. “Crypto”- is the Latin prefix for hidden or secure, while “graphy” means writing.  In computer science, cryptography...

What is a smart contract?

What is a smart contract?

What is a smart contract? Smart contracts are computer programs that run on the blockchain. They are digital agreements encoded or written, with specific sets of rules that govern how and when the contracts will be signed, much like traditional contracts that are...

What are nodes?

What are nodes?

What is a node? A node is essentially a computer on the blockchain that runs network software to recognize and broadcast valid transactions. Nodes communicate which each other and reach consensus, or a common agreement, as to which transactions are legitimate. When we...

What is a consensus mechanism?

What is a consensus mechanism?

What is a consensus mechanism? Consensus refers to the act of coming to an agreement among individuals or groups. A consensus mechanism is the method by which decentralized networks agree on which transactions are valid before being confirmed as legitimate across the...