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Quantum Resistant Ledger (QRL) is a pioneering blockchain platform designed from the ground up to be secure against the threat of quantum computing attacks, making it a leading contender in the post-quantum cryptography space.

Key takeaways

• QRL is a Layer 1 blockchain specifically engineered with post-quantum secure digital signatures, using the eXtended Merkle Signature Scheme (XMSS).
• The network transitioned from Proof-of-Work (PoW) to a Proof-of-Stake (PoS) consensus mechanism in 2023, enhancing energy efficiency and scalability.
• QRL has a fixed maximum supply of 105,000,000 QRL tokens, ensuring a deflationary and predictable monetary policy.
• The platform supports native smart contracts and decentralised applications (dApps) through its own Quantum Resistant Ledger Virtual Machine (QVM).
• QRL is designed to protect digital assets and data from future quantum computer attacks, offering a long-term, secure store of value and a platform for building quantum-safe applications.

What is Quantum Resistant Ledger? Key Specifications & Tokenomics

Quantum Resistant Ledger (QRL) is a next-generation, post-quantum secure blockchain that prioritises long-term data and asset protection against the potential threat of quantum computing. Unlike many blockchains that rely on elliptic curve cryptography (ECC) which is vulnerable to Shor's algorithm on a sufficiently powerful quantum computer, QRL uses hash-based signatures that are believed to be resistant to such attacks. The network operates on a Proof-of-Stake (PoS) consensus mechanism, which was adopted after a successful transition from Proof-of-Work (PoW) in 2023, making it more environmentally friendly and scalable.

Who created Quantum Resistant Ledger (QRL)?

The Quantum Resistant Ledger project was founded by a team of cryptographers and blockchain developers who recognised the existential threat that quantum computing poses to existing cryptographic systems. The core development team is led by Michael Strike, who serves as the project lead and a key architect of the protocol. The project was initially announced in 2016, with the mainnet launching in 2018. The team is supported by a community of developers and researchers through the QRL Foundation, a non-profit organisation based in Switzerland that oversees the project's development and governance. The foundation ensures that the project remains open-source and community-driven, with a focus on long-term security and sustainability. The team has a strong background in cryptography and computer science, with several members having contributed to the development of post-quantum cryptographic standards.

How does Quantum Resistant Ledger (QRL) work?

QRL operates on a unique architecture that integrates post-quantum security at its core. The key innovation is the use of the eXtended Merkle Signature Scheme (XMSS), a hash-based signature scheme that is considered secure against quantum computer attacks. Unlike traditional blockchains that use ECDSA or EdDSA signatures, XMSS relies on the security of hash functions, which are believed to be resistant to quantum algorithms like Shor's algorithm.

• Consensus Mechanism: QRL uses a Proof-of-Stake (PoS) consensus mechanism, where validators are chosen to propose and validate blocks based on the amount of QRL they stake. This transition from PoW, completed in 2023, significantly reduces energy consumption and improves network throughput.
• Smart Contracts: The platform features the QRL Virtual Machine (QVM), a custom-built virtual machine that supports smart contracts written in a specialised language. The QVM is designed to be quantum-resistant, ensuring that dApps built on QRL are also protected from future quantum attacks.
• Address Format: QRL uses a unique address format that is derived from the XMSS public key, making it inherently quantum-resistant. This means that even if a quantum computer were to break the signature scheme, the address itself would remain secure.

What makes Quantum Resistant Ledger (QRL) unique and valuable?

QRL's primary value proposition is its proactive approach to quantum security. While most blockchains are currently secure against classical computers, they are vulnerable to future quantum attacks. QRL addresses this by building security into the protocol from the start, rather than attempting to patch it later.

• First-Mover Advantage: QRL is one of the first and most established post-quantum blockchains, having launched its mainnet in 2018. This gives it a significant head start in terms of development, community, and ecosystem.
• Fixed Supply: With a maximum supply of 105,000,000 QRL, the token is deflationary by design. This fixed supply, combined with the staking mechanism, creates a scarcity model that can potentially appreciate in value over time as demand for quantum-secure assets grows.
• Long-Term Security: For institutions, governments, and individuals looking to store value or build applications that need to remain secure for decades, QRL offers a solution that is not reliant on the continued security of current cryptographic standards. This makes it particularly attractive for use cases like digital identity, land registries, and long-term asset storage.
• Active Development: The QRL team continues to actively develop the protocol, with ongoing research into new post-quantum signature schemes and scalability solutions. The project has a strong focus on academic rigour and peer-reviewed research.

What is Quantum Resistant Ledger (QRL) used for?

QRL is designed for a variety of use cases that require long-term security and resistance to quantum computing threats.

• Secure Store of Value: QRL can be used as a digital asset for storing value, similar to Bitcoin, but with the added assurance of quantum resistance. This makes it a potential hedge against the risk of quantum attacks on other cryptocurrencies.
• Quantum-Safe dApps: Developers can build decentralised applications on the QRL blockchain using the QVM. These dApps can be used for a range of purposes, including secure messaging, digital identity management, and supply chain tracking, all with the assurance of post-quantum security.
• Enterprise and Government Solutions: QRL is well-suited for enterprise and government applications that require high levels of security and long-term data integrity. Examples include secure voting systems, land title registries, and digital notary services.
• Staking and Network Security: QRL token holders can stake their tokens to help secure the network and earn rewards. This provides a passive income stream while contributing to the overall health and security of the blockchain.

How to buy QRL Coin?

QRL is a popular cryptocurrency listed on many exchanges. However, it is recommended to trade on a major platform like BTCC Exchange for higher liquidity and better customer support.

1. Register a BTCC Account: Sign up using your email or mobile number and complete the KYC verification to unlock more features and benefits of the platform.
2. Deposit Funds: Deposit fiat currency (via bank transfer, card, or third-party payment) or transfer USDT from an external wallet into your BTCC account. You can follow this guide.
3. Start Trading: Go to the trading page and search for the spot trading pair QRL/USDT or the perpetual contract QRLUSDT.
4. Place an Order: Enter the amount of QRL you wish to purchase and submit the order. For contract trading, you can also choose to go short (sell) and adjust the leverage multiplier according to your strategy and risk tolerance.
5. Confirm Your Purchase: For spot purchases, check your personal account to see if the coins have arrived. For contract trades, check the trading page to see if your order was filled successfully.