Quant Network Unveils Overledger and Fusion Rollup, Connecting 74 Blockchain Networks

Quant Network has developed Overledger, an operating system that connects blockchains through a standardized API layer without modifying them. This allows for communication between different chains and enables multi-chain applications (MApps) to interact with several networks at once.

The platform treats existing blockchains as components it can read and write to, functioning like a universal adapter that speaks each network's language and translates between them. Overledger is built around a three-layer architecture: the blockchain layer supports multiple chains, the gateway layer manages communication, and the application layer enables developers to build MApps using Quant's APIs.

As of June 2026, Quant's infrastructure connects 74 public and private blockchain networks through its Fusion Rollup mainnet. This is a significant milestone for the company, with QNT trading in the $60, $71 range during this period.

The Fusion Rollup is a Layer 2.5 rollup that anchors to multiple Layer 1 blockchains simultaneously, enabling institutions to move assets and settle transactions across chains as native operations. This architecture uses an optimistic rollup framework derived from the OP Stack, with transaction data stored on a permissioned Hyperledger Besu network.

Quant's infrastructure has been adopted by major financial institutions and central banks, including the UK's Tokenized Sterling Deposits Project, which aims to test tokenized commercial bank deposits for improved payments and settlement processes. The company has also partnered with the European Central Bank on its Digital Euro project and launched QuantNet, a programmable settlement network designed to modernize banking infrastructure.