Quant CEO profiled by Digital Rubicon


“Blockchain interoperability will transform global payments systems," says Gilbert Verdian.

10 February 2022

Our CEO Gilbert Verdian is profiled in this week’s issue of Digital Rubicon, a newsletter written by former HedgeWeek and Private Equity Wire managing editor James Williams that explores how digitisation trends are shaping the world of private market investing.

Gilbert recounts the origins of Quant, how he helped establish the Blockchain ISO Standard TC307 in 2015, and why ultimately he believes it’s blockchain interoperability that will transform global payment systems. He tells James: “Blockchain allows you to safely trust the networks, the cryptography, the scalability and the resilience to run monetary transactions on a better network. The next iteration, or evolution of these DLT-based networks, is going to be the one that runs the world's transactions globally.”

Visit Digital Rubicon to read the full interview.


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