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Qtum (Quantum) is an open-source blockchain platform that combines the strengths of both Bitcoin and Ethereum technologies. It uses Bitcoin’s UTXO (Unspent Transaction Output) model for secure and transparent transactions while incorporating Ethereum’s smart contract functionality. This hybrid approach allows Qtum to offer a versatile and efficient platform for developers to build decentralized applications (dApps) and execute smart contracts.


The phonetics of the keyword “Qtum” would be: /’kjuːtəm/ or “cue-tuhm”

Key Takeaways

  1. Hybrid Blockchain Technology – Qtum combines the best of Bitcoin’s UTXO (Unspent Transaction Output) model and Ethereum’s EVM (Ethereum Virtual Machine), offering a unique platform that benefits from the security of the UTXO model and the flexibility of smart contracts enabled by the EVM.
  2. Proof-of-Stake Consensus – Unlike Bitcoin and Ethereum (currently using Proof-of-Work), Qtum utilizes a Proof-of-Stake consensus algorithm, which is more environmentally friendly, promotes decentralization, and incentivizes users to participate in network validation, leading to better energy efficiency and scalability.
  3. Compatibility and Interoperability – Qtum is designed to be compatible with existing blockchain platforms, such as Bitcoin and Ethereum, allowing for seamless integration with various DApps, wallets, and contracts. This interoperability enables the Qtum ecosystem to support and collaborate with a wide range of blockchain applications and services.


Qtum is an important business/finance term because it refers to an innovative open-source blockchain platform that combines the strengths of both Bitcoin and Ethereum technologies. This hybrid platform aims to provide an efficient, secure, and flexible environment for smart contracts and decentralized applications (dApps), thereby opening up new possibilities for businesses and financial applications. The unique consensus mechanism and account abstraction layer of Qtum make it an attractive solution for industries looking to leverage blockchain technology, as it is highly adaptable, interoperable, and scalable. Consequently, this increases the potential for mainstream adoption, fostering the growth of digital assets and supporting overall innovation in the blockchain ecosystem.


Qtum is a unique blockchain project designed to bridge the gap between the robustness and flexibility of Ethereum’s smart contracts technology and Bitcoin’s secure and stable blockchain system. Its main purpose is to offer an innovative and efficient platform for applications and businesses that require a blockchain infrastructure that is versatile, secure, and scalable. By combining the best features of these two leading blockchain platforms, Qtum enables businesses and developers to create and deploy decentralized applications (dApps) and smart contracts with greater ease and efficiency.

One of the significant aspects of Qtum is its support for multiple virtual machines, including the Ethereum Virtual Machine (EVM) and the x86 Virtual Machine. With this functionality, developers have the flexibility to use different programming languages and adapt more quickly to changes in the blockchain environment. Moreover, Qtum leverages a novel proof-of-stake (PoS) consensus algorithm to facilitate faster and more energy-efficient transactions. This feature further enhances Qtum’s suitability for a variety of business use cases, such as supply chain management, IoT, and decentralized finance (DeFi) applications. The Qtum project’s strong focus on interoperability, flexibility, and security positions it as an attractive option for organizations looking to harness the immense potential of decentralized technologies.


Qtum is an open-source blockchain platform that combines the strengths of both Bitcoin and Ethereum, allowing developers to build decentralized applications (DApps) and smart contracts. Here are three real-world examples related to Qtum:

1. Qbao Network: Qbao is a Qtum-based cryptocurrency wallet mobile app that allows users to store, send, and receive various Qtum-based tokens. It also offers a decentralized chat platform, allowing users to communicate securely without any third-party intervention. The Qbao app adds a social aspect to the use of cryptocurrencies, making it more accessible to everyday users.

2. Vevue: Vevue is a decentralized video sharing platform built on the Qtum blockchain. Content creators can earn rewards in the form of Qtum tokens for posting videos on the Vevue platform. This decentralized approach creates more financial opportunities for content creators, as there are no intermediaries taking a cut of their earnings.

3. MediBloc: MediBloc is a decentralized healthcare information platform built on Qtum. It aims to improve patient data management, interoperability, and data security in the healthcare industry. Medical professionals, patients, and research institutions can securely store and share health records on the blockchain, ensuring data privacy and making it easier to collaborate in the medical community.

Frequently Asked Questions(FAQ)

What is Qtum?

Qtum is an open-source blockchain platform that combines the strengths of both Bitcoin and Ethereum networks. It uses Bitcoin’s proven security and stability to build upon Ethereum’s flexibility to create decentralized applications (dApps) and smart contracts. It aims to provide a streamlined and more efficient solution for businesses and developers to utilize blockchain technology in various industries.

How does Qtum differ from Bitcoin and Ethereum?

While Qtum is built on the foundation of the Bitcoin network, it incorporates Ethereum’s virtual machine capabilities for smart contracts and dApps. This allows Qtum to offer the security and stability of Bitcoin’s blockchain along with the flexibility of Ethereum, making it an ideal platform for enterprises and developers to implement blockchain solutions.

What is the consensus mechanism used by Qtum?

Qtum uses a hybrid combination of Proof-of-Stake (PoS) and the Unspent Transaction Output (UTXO) model. This consensus mechanism, known as Proof-of-Stake Version 3 (PoSv3), helps maintain security, decentralized control, and the resource efficiency of the Qtum network.

Can I build decentralized applications on Qtum?

Yes, Qtum’s platform is designed to support the development of decentralized applications (dApps) and smart contract execution, using Ethereum-compatible tools such as Solidity and the Ethereum Virtual Machine (EVM).

What is the native currency of Qtum?

The native cryptocurrency of the Qtum network is called the Qtum token (QTUM). It is used to pay for transaction fees, execute smart contracts, and incentivize network validators for securing the blockchain through the PoS consensus mechanism.

How do I store Qtum tokens?

Qtum tokens can be stored in various wallets, including the official Qtum Core Wallet, Qtum Electrum Wallet, and hardware wallets such as Ledger and Trezor devices. Some third-party wallets also support Qtum storage.

Where can I buy Qtum tokens?

Qtum tokens can be purchased on several popular cryptocurrency exchanges, including Binance, Bittrex, Huobi, and Bitfinex. QTUM is typically traded against Bitcoin, Ethereum, or stablecoins like Tether.

Is Qtum compatible with existing blockchain applications?

Yes, Qtum offers compatibility with existing blockchain applications developed for the Ethereum network. It enables developers to easily port their dApps and smart contracts to the Qtum platform with minor modifications.

What industries can benefit from Qtum technology?

Qtum’s technology is versatile and can be applied in various industries, including finance, supply chain management, Internet of Things (IoT), gaming, and more. Its blockchain infrastructure can be customized to suit the specific needs of different businesses and sectors.

Related Finance Terms

  • Blockchain technology
  • Smart contracts
  • Cryptocurrency
  • Proof-of-stake
  • Decentralized applications (dApps)

Sources for More Information

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