The first Blockchain operating system

that connects the world’s networks and

facilitates the development

of multi-chain applications.

What is Overledger?

Our vision

Enable connection between blockchains

Enable interoperability of blockchains and existing networks.

Create a platform for multi-chain applications

Overledger will be the only platform that facilitates the development of decentralised, multi-chain applications.

Connect the Internet to Blockchain through Overledger

It is predicted that in the next few years, much of our digital footprint will be run via a blockchain without us even realising it.


The major limitation of modern-day blockchain is the inability of blockchains to communicate with one another. Consider this: why can't a smart contract executed on Ethereum be recognised by the Hyperledger blockchain?

Not since the Internet itself has a technology shown such promise and elicited such excitement than blockchain technology. The potential of blockchain technology seems limitless. The world's new smart economies along with dozens of start-ups are using blockchain technology for everything from global payments to music sharing. It is predicted than in the next few years, much of our digital consumption will be run via a blockchain foundation without us even realising it. While the potential of blockchain technology might seem endless -there are certain limitations.

The major limitation of modern-day blockchain technology, identified by the Quant founders, has been the inability of blockchains to communicate and working with one another i.e. lack of interoperability. In order for blockchain technology to unlock its true potential, it needs to allow seamless communication across multiple blockchains as well as recognition of transaction across blockchains. Consider this: why can't the smart contract include code executed on other blockchains as part of its process?



Enter Overledger -the first interoperable blockchain operating system that facilitates internet-scale development of decentralised, multi-chain applications.

Overledger has the ability to unlock and distribute value and applications across current and future blockchains.

Overledger is an agnostic platform that connects the world's networks to blockchains and ensures you're not limited to any single a vendor or technology.

Overledger is the only platform that facilitates the development of internet-scales development of decentralised, multi-chain applications.


Overledger will address the major limitations of current blockchain technology and unlock its true potential. Overledger is set to disrupt industries.


Empower businesses with the flexibility to connect their network to blockchains without burden of being locked into an existing technology or vendor.

By facilitating multi-chain interoperability, Overledger will enable businesses to access new markets, increase resilience, and de-risk investments.


Facilitate human-to-human and machine-to-machine trust that ensures safe and secure transactions with one another.

Provide individuals with a level of access and control of their personal information we’ve never experienced before.


Significantly increase the security, privacy and interoperability of health data.

Revolutionise global health information exchanges (HIE) by making electronic medical records more efficient and secure to the benefit of individual patients as well as the scientific and healthcare community.


Deliver solutions for governments that minimize the bureaucracy but enhance transparency and collaboration between governments, business and citizens.

Provide the opportunity for collaboration between the public and private sectors that were never thought possible.

Overledger is not another blockchain. It's the 'over ledger' that sits on top of blockchains providing a meta-gateway.

Read our Whitepaper

Overledger V 0.1 Whitepaper –Find out why we refer to it as the blockchain operating system of the future.


Why Quant

London-based Quant Network is set to revolutionise blockchain technology with the development of their blockchain operating system Overledger. The experienced team are determined to fulfil the original vision of the internet by creating an open trusted network for people, machines, and data to operate securely and safely.

In 2016, Quant Network CEO & Founder Gilbert Verdian joined forces with leading experts -technology innovator Colin Paterson and digital economist Dr. Paolo Tasca to form an unparalleled team who share vision and are dedicated to developing the blockchain operating system of the future. No other organisation has the determination but also the combined technical experience that spans the globe as well as diverse sectors.

Gilbert Verdian


Gilbert has been working in Cybersecurity for 20 years at CIO/CTO/CISO level in Financial Services, Governments, Consulting, and Industry. He's also the founder of Blockchain ISO Standard TC307 where 40 countries are working together to develop the Standard.
UK Government, HM Treasury, Downing Street, Department of Health, Ministry of Justice, BP, HSBC, CSC, EY, PWC

Paolo Tasca

Chief Strategist

Paolo Tasca heads up the world's largest Blockchain Centre at UCL, The Centre for Blockchain technologies and is a Digital Economist with an economics background in central banks.

Colin Paterson


Colin is technology innovator with a 20 year background in Information, Cybersecurity, and A.I.
working in Financial Services, Government and Industry.
Deutsche Bank, Nationwide, BT, CSC, NHS, QCDA

Our partnerships

The team at Quant are also committed to collaborating and forming strategic partnerships to address the challenges that hinder the potential of blockchain technology. As such we have recently joined the Accord Project as well as formed a partnership with the HUW Hamberg University to address the evolution of smart contracts to contact treaties which are key, as we move away of single-ledger dependency.

Security and Trust

Overledger will facilitate human-to-human and machine-to-machine trust to transact with each other securely and safely.

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Technology Upgrade

Overledger will address the major limitations of current blockchain technology that limit its true potential.

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