QAN = ChainlinkThe Quantum-resistant QAN blockchain platform is planning to integrate Chainlink’s decentralised oracle framework to enable developers to obtain tamper-proof real-world data. The objective is to support multilingual smart contracts which can then leverage resources from outside the QAN blockchain platform.

Johann Polecsak, CTO and co-founder of QANplatform
Johann Polecsak, CTO and co-founder of QANplatform

Johann Polecsak, CTO and co-founder of QANplatform commented on the integration: “I believe that giving developers the ability to build efficient smart contracts in a timely manner is a necessary step in order to reach the desired goal of mass adoption. We can only achieve that through real-world integration and co-existence with platforms that people already use. Thanks to Chainlink’s oracle solutions, we are able to do that with QAN. Alongside our multilingual smart contracts, developers possess everything they need in order to achieve adoption.

Why extend the QANplatform?

While the QANplatform offers many security properties which make for long-term viability, it lacks (like other blockchain platforms) the ability to interact with data and systems that are not on the QAN blockchain. The challenge is that blockchains on their own only perform calculations on data stored within their networks while still maintaining security.

This problem is a major roadblock for blockchain development. Most smart contracts need to interact with external resources if they are to offer value. Smart contracts are significant because they can provide the ability to execute tamper-proof digital agreements which are considered highly secure and highly reliable. But, in order to maintain a contract’s overall reliability, the inputs and outputs that the contract relies on also need to be secure.

Given that trusted data sources exist on non-blockchain systems, there needs to be a way to access these in ways at least as secure as the blockchain itself. This is known as the ‘oracle problem’. An oracle is, therefore, a digital agent employed by a smart contract to retrieve and/or connect it to data and systems outside its native blockchain (off-chain).

The Chainlink connection

Chainlink provides an oracle solution for a blockchain ecosystem. In this context, Chainlink is a decentralised oracle network which enables smart contracts securely to access:

  • off-chain data feeds
  • web APIs
  • traditional bank payments.

Chainlink takes this further by adding decentralised security to the oracle mechanism triggering a smart contract. Through Chainlink, developers can protect against a centralised oracle becoming a single point of failure. It does this by:

  • decentralising the data delivery process
  • using multiple oracles to gather the same data point
  • aggregating their responses together.
Chainlink
Chainlink end-to-end

The Chainlink approach can also protect against one data source being the single source of truth. This happens by gathering data from multiple sources and aggregating these together.

By adding Chainlink’s oracle solution to the QANplatform, QAN developers will be able to build more complex smart contract designs.

Potential use cases

Some of the potential use cases QAN considers as having potential, once integration of the Chainlink has happened, include:

  • decentralized sourcing of the QARK/USD price; this would enable enterprises to calculate transaction fees in USD, yet pay with QARK on the backend
  • secure connections to IoT devices; this would open up new insurance, supply chain and logistics capabilities.

Enterprise Times: what does this mean

QANplatform is a quantum-resistant blockchain platform. It uses lattice-based cryptography to deliver resilience against the types of quantum attacks expected to become possible within the next five years (and which, it argues, all major crypto networks are vulnerable to).

Chainlink, via its decentralised oracle network, enables smart contracts to connect to off-chain data feeds as well as web APIs and traditional bank payment mechanisms. By combining the QAN platform and Chainlink expands their market possibilities, and attractions to developers. As important, smart contracts on a blockchain gain resistance to the likely quantum threat (to cryptography in general) coming in the future.

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Charles Brett is a business/technology analyst consultant. His specialist areas include enterprise software, blockchain and enterprise mobility tech (including metering). Specific industry sectors of interest and experience include finance (especially systems supporting wholesale finance), telecommunications and energy. Charles has spoken at multiple industry conferences, has written for numerous publications (including the London Times and the Financial Times). He was the General Chair of the bi-annual High Performance Systems Workshop, 2005. In addition he is an author and novelist. His Technology books include: Making the Most of Mobility Vol I (eBook, 2012); Explaining iTunes, iPhones and iPads for Windows Users (eBook, 2011); 5 Axes of Business Application Integration (2004). His published novels, in the Corruption Series, include: The HolyPhone Confessional Crisis, Corruption’s Price: A Spanish Deceit and Virginity Despoiled. The fourth in The Corruption Series - Resurrection - has is now available. Charles has a B.A. and M.A in Modern History from the University of Oxford. He has lived or worked in Italy, Abu Dhabi, South Africa, California and New York, Spain, Israel, Estonia and Cyprus.

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