Introduction of Overledger licence fee


On 15 December 2021, we’re introducing an annual Overledger licence fee of £100, applicable to all customers and developers on the platform. The licence fee is payable in QNT.

This year, we’ve introduced significant enhancements, such as:

  • Expanded API to include event subscriptions and easy smart contract functionality
  • Updated enterprise ready architecture with OAuth 2.0 and OpenAPI 3
  • Scalability, with internal Remote Connector Gateways
  • SDK support for 12 programming languages

We have exciting new functionality coming in 2022 which we look forward to sharing with you soon.

If you’re an existing customer or developer who signed up before today for the live (MainNet) platform, we’re grateful for your ongoing support and you’ll receive an additional three months of free use after 15 December 2021, which means your licence fee will not be due until 15 March 2022.

The licence fee and free three months applies only to the live platform; our test platform currently remains free to use.
Instructions on how to pay for your licence using QNT will be published next week with the release of Overledger 2.1.5.


Overledger 2.x

Overledger 1.x


OAuth 2.0 standard (allowing SSO)

Proprietary (BPI Keys)


In API, seamless updates

In SDK, re-download for updates


Full abstraction across all DLTs

Partial, DLT-specific edge cases

RCG Framework

REST / JSON APIs from OVL Core

Proprietary P2P (experimental)

Time to Deploy

32 minutes (CI / CD pipelines)

1-2 weeks

QNT Utility Token / Treasury

Optimised, audited smart contracts

Experimental smart contracts


Optimised to scale fast – 23 Microservices

Hardened proof of concept
– 9 Microservices

Transaction Routing Algorithm

6 factor, game theory optimised

Experimental P2P emergent


Cloud native (scaling / resilience)

Standalone DB deployments

Cross-DLT Implementation

REST API calls direct to OVL, integrated smart contract back end

SDK-based Javascript 
apps call smart contract functions
via OVL

2021 Achievements

50% Quant team has grown by over 50% and will continue to do so 

OVL1.0 to 2.0 Release schedule accelerated, moved to much more frequent automated updates
– Previously, last major update was seven months, then in early 2021 moved to three months (Jan and March)
and then to monthly (April and May). We’re now moving to fortnightly releases. 

2.5X Overledger is now 2.5x bigger (April)  

2.0 Re-engineered the entire 2.0 architecture

Open API 3.0 for easy integration into developer workflows

OAuth 2.0 for single sign on for enterprise customers    

Cloud Native Scalable and resilient already, now deployable automatically 

Native Transactions 

OVL 2.0 Developer portal 2.0