What is Cardano?

Cardano (ADA) is one of the leading cryptocurrencies that is renowned for its scientific approach, its energy-efficient proof-of-stake system, and its focus on overcoming key blockchain challenges such as interoperability. ADA is the native token used for transactions, staking, and governance within the Cardano network.

How does Cardano work?

Cardano is a blockchain that works on the consensus algorithm, Ouroboros Proof-of-Stake. Its architecture is divided into two main layers: the Settlement layer (CSL) for processing transactions, and the calculation layer (CCL) for executing smart contracts. This separation allows the components of the system to be independently updated without disrupting its operation.

Unlike Proof-of-Work systems, Cardano doesn’t require energy-intensive mining. Validators (stake pools) are selected to create new blocks in proportion to the number of ADA they hold in the network. This process is called staking and ensures network security; as the attack becomes economically unprofitable, the attacker will need control over 51% of all coins.

Smart contracts at Cardano were developed in Plutus, based on Haskell. Before implementation, the code underwent formal verification, which is a mathematical proof of the correctness of the work. This significantly reduces the number of vulnerabilities compared with other platforms. High scalability is achieved through sidechains and the Hydra solution, a protocol that allows one to process up to a million transactions per second.

Who founded Cardano?

In 2014, Charles Hoskinson, a co-founder of Ethereum, left the project because of fundamental disagreements regarding development paths. Unlike Vitalik Buterin, who advocated a non-profit model, Hoskinson saw the future of blockchain as a strategic partnership with academic institutions and businesses. Together with Jeremy Wood, former operating director of the Ethereum Foundation, he founded Input Output Hong Kong (IOHK), which became Cardano's technical engine.

They named the blockchain in honor of Gerolamo Cardano (1501-1576), an outstanding Italian scientist, philosopher, writer, and gambler. Cardano’s creator, mathematician Charles Hoskinson, named Cardano, aims to create a flexible and interoperable variety of programmable money using scientific methods based on mathematical evidence and game theory. The official launch of the Cardano Blockchain occurred on October 1, 2017.

Cardano road map

The project development plan is divided into five eras in its roadmap. Each era refers to a certain functionality. Despite the fact that eras go consistently, work on each of them is carried out in parallel, and research and development often go simultaneously.

Byron

Byron is the foundation of Cardano as a project. At this stage, users could buy and sell ADA cryptocurrency in a network operating on the Ouroboros consensus protocol. In the Byron era, the Daedalus wallet (the official desktop wallet for ADA) was launched, as well as the Yoroi wallet, which was designed for quick transactions and everyday use.

In addition to the first technical developments, this era was associated with the creation of the Cardano community. As a result, the number of projects approached 500.000, and cryptocurrency was listed on more than 30 exchanges.

Shelley

The Shelley era was the first step towards decentralization, giving community control to more nodes. Another milestone was the introduction of a system of delegation and rewards, rewards for stake pools, and the community.

Hard fork Shelley took place on the Cardano network four years ago, in July 2020. Subsequently, users can contribute more ADA for staking, and the commission to validators also increased. 

Goguen

The next stage in project development aimed at creating an ecosystem of decentralized applications in the project network by introducing smart contracts. The update was successfully integrated into the Cardano Core Network in September 2021.

One of the goals of this era was the creation of the Plutus programming language. In addition, the developers sought to make the launch of smart contracts simple enough that financial and business experts could do this without in-depth technical knowledge.

Basho

This era is required to optimize the network and improve its scalability. Unlike other eras of network development, it aims to improve basic performance to better support applications with growing transaction volumes.

One of the key features is the introduction of sidechains, which are compatible with the Cardano core network, to expand the blockchain. For example, you can transfer part of the load from the main network to the sidechain, thereby increasing its capacity.

Voltaire

Cardano is approaching this era, which is the final stage according to the project roadmap. It is aimed to transform the network into an autonomous, decentralized system. In particular, as a result of blockchain updates, new voting formats and management actions should be introduced.

The project developers call the upcoming hard fork most important for the blockchain industry. Once the update is activated, Cardano passes from the hands of the IOHK under the full control of community members. A treasury system, which will be funded by transaction fees, will also be introduced. The funds raised will be directed to the development of the network, and the community will participate by vote.

What makes Cardano unique?

If Bitcoin is "digital gold" and Ethereum is a "world computer," Cardano aims to become an infrastructure for the real economy. It is too early to say whether it will succeed in this, but at the moment, this is technologically one of the most thoughtful blockchains in the market. Let us consider the main features closely.

Dual architecture

Cardano uses a two-layer network architecture. Most blockchains use a single-layer system where all functions–transactions, smart contracts, and tokenization–work in one place. This creates a load and limits scalability.

Cardano solved this problem by having two key layers: the Settlement Layer (CSL) and the Computation Layer (CCL). The first layer is responsible for calculations between users, and the second layer starts smart contracts and decentralized applications (dApps). This allows developers not to choose and balance the development of the ecosystem and its stability.

This architectural separation makes Cardano more flexible and resilient to change. For instance, updates or the implementation of new functions in the Сomputational layer do not affect the stability of the calculation layer. This simplifies the development of the ecosystem and reduces risks to users. Additionally, this structure facilitates compliance with different regulatory requirements since data and logic can be stored and processed separately depending on the relevant jurisdiction. Cardano's dual-layer architecture delivers high performance, security, and scalability, providing developers with a user-friendly environment in which to create and implement innovative solutions.

Scientific approach

Cardano is built on the principles of academic development, and each element of the network is first subjected to thorough research, mathematical modeling, and independent expert evaluation before entering the working version of the blockchain. Such an approach differentiates Cardano from many other blockchains, whose developers usually implement new features through trial and error.

For example, the consensus algorithm Ouroboros was not just invented by the development team; it has passed a full-fledged review in academia. An article about Ouroboros was presented at the Crypto 2017 conference, one of the most prestigious in the field of cryptography, and was then published in IEEE Security & Privacy. This implies that before implementation, the algorithm was checked by independent experts specializing in distributed systems and cryptography.

Although Bitcoin and Ethereum largely became experiments that developed as problems were discovered, Cardano was originally designed as a system with proven security and scalability. In other words, Bitcoin and Ethereum can be compared with old cities that grew spontaneously in response to the immediate needs of their inhabitants. On the other hand, Cardano is more like a modern city, where every street is planned and mapped out in advance.

What gives Cardano (ADA) value?

• ADA is used to pay for transactions, participate in staking, and manage the network. The maximum supply is limited to 45 billion coins, which creates deflationary pressure as the demand increases. 
• Technological advantages - the energy-efficient algorithm of the Ouroboros PoS, support for smart contracts, and academically proven security–increase the confidence of institutional investors. ADA is especially valuable in real-use cases, from government projects in Georgia and Ethiopia to the developing ecosystem of DeFi and NFT, which forms organic demand.

How many Cardano (ADA) tokens exist?

The maximum supply of ADA is 45 billion, with approximately 35 billion currently in circulation. New tokens were gradually released through staking rewards.

How is the Cardano network secured?

Instead of Cardano mining, the network relies on Ouroboros, a PoS protocol in which stakeholders validate transactions. This makes it more energy-efficient than Bitcoin while maintaining security.

How is Cardano used?

Cardano’s use cases go beyond payments and focus on three areas.

• It is a platform for developing smart contracts, allowing complex decentralized applications in the fields of finance, identification, and digital asset management.
• Cardano is used as a system for safe and inexpensive remittances, with minimal fees.
• The platform provides tools for building a digital ID infrastructure, which is especially popular in developing countries.

How to choose a wallet for Cardano?

To store Cardano, you will need a wallet. Its choice depends on the current priorities.

• Hardware wallets (Ledger, Trezor): Best for security.
• Software wallets (Daedalus, Yoroi): good for staking.
• Exchange wallets (Coinbase, Binance) – Convenient for everyday use, but less secure.

FAQ

What is the Cardano blockchain used for?

Cardano can be used in smart contracts, DeFi, NFTs, and enterprise solutions.

Cardano vs Bitcoin: What’s the difference?

Bitcoin is a digital currency created for payments and is used for value storage, whereas Cardano is a smart contract platform with faster transactions and lower fees.

Can you mine Cardano (ADA)?

No, Cardano doesn’t use mining technologies relying on the Proof-of-Stake algorithm.

Conclusion

Cardano (ADA) is an advanced blockchain project with a scientific approach and ambitious goals. It offers an energy-efficient, scalable, and secure platform for decentralized applications and financial services. Owing to the unique Ouroboros protocol and multilevel architecture, Cardano stands out among cryptocurrencies as a promising and technologically mature project with a powerful foundation and a large community.