Quant Network turned on the Fusion Rollup mainnet on June 2, 2026. The launch arrived exactly ten years after founder Gilbert Verdian started the company. Verdian described it as the first multi-ledger rollup ever shipped to production. Notably, the system connects 74 blockchain networks inside a single execution environment. Additionally, it targets banks, asset managers, and other institutions that need to operate across many chains at once. The launch also includes a Trusted Node Program that allows enterprises to plug in more networks on demand.
Today we go live on mainnet with the Fusion Rollup, the world's first multi-ledger rollup, connecting 74 blockchain networks in one unified environment, built for institutions.
— Gilbert Verdian (@gverdian) June 2, 2026
When I started @quantnetwork in 2015, the vision was simple: make blockchain work for institutions at… pic.twitter.com/XmtMozEm2m
How the Fusion Rollup Architecture Works
The Fusion Rollup sits between underlying blockchains and the application layer, a position Quant calls Layer 2.5. Importantly, it does not anchor to a single Layer 1 the way most rollups do. Instead, it spans many ledgers simultaneously, using an optimistic rollup design extended from the OP Stack. Transaction data lives on a permissioned Hyperledger Besu network, while state roots post back to connected Layer 1s. As a result, institutions can move assets, settle transactions, and pass messages across chains without bridges or wrapped tokens. This eliminates the bridge risk that has cost the industry billions over the last five years.
Fusion is the world's first multi-ledger rollup, we call it Layer 2.5 because where a conventional Layer 2 anchors to a single Layer 1, Fusion anchors to N L1s simultaneously. https://t.co/XavBmaOICQ#QuantFusion #MultiLedgerRollup pic.twitter.com/xVZEmNZfpB
— Quant Fusion Layer 2.5 (@FusionLayer25) May 26, 2026
Unified Assets Replace Fragmented Liquidity
The core breakthrough is Quant’s unified asset model. Today, USDC exists as separate, incompatible copies across Ethereum, Solana, Polygon, Avalanche, Arbitrum, Base, and BNB Chain. Fusion collapses those seven copies into a single canonical instrument the firm calls uUSDC. Similarly, BlackRock’s BUIDL tokenized fund becomes uBUIDL inside the rollup, with one liquidity pool instead of seven fragmented ones. Each asset stays anchored to its origin chain and remains withdrawable at any time. In short, institutions gain one balance sheet, one compliance view, and one liquidity surface across every connected network.
The 74 Networks Now Reachable Through Fusion
Quant has not published the full list of all 74 connected networks. However, public materials and Overledger documentation confirm several of the major chains in scope. On the public side, Fusion connects Ethereum, Bitcoin, Solana, Polygon, Avalanche, Arbitrum, Base, BNB Chain, XRP Ledger, Stellar, and XDC. On the permissioned side, it spans Hyperledger Fabric, R3 Corda, and a wide range of private enterprise EVM chains. Additionally, Fusion links into CBDC testbeds Quant has supported, including the Bank of England’s Project Rosalind, ECB digital euro pilots, and Bundesbank work on settlement infrastructure. Furthermore, the Trusted Node Program lets enterprises add new networks themselves through bring-your-own-node and bring-your-own-connector tooling.
Horizontal scalability. Fusion scales by connecting additional #networks rather than by adding nodes to a single chain.
— Quant Fusion Layer 2.5 (@FusionLayer25) April 29, 2026
The platform is already live with over 73 connected networks and 1,000+ nodes, and new Layer 1s can be onboarded without re-architecting the rollup or…
Institutional Adoption Is Already Lined Up
Quant has spent the last several years embedding inside the institutions Fusion now serves. For instance, the company worked with the Bank of England and the Bank for International Settlements on Project Rosalind, a retail CBDC API platform. Moreover, Quant won selection in September 2025 to power the UK’s Tokenised Sterling Deposits initiative, connecting commercial bank money to programmable rails. The firm also partners with Oracle on enterprise blockchain infrastructure and with UST on tokenization services for capital markets. Risk-management vendor Murex has integrated Quant components into its institutional workflow stack. As a result, Fusion goes to market with a built-in pipeline of banks, central banks, and tokenization platforms already familiar with the underlying Overledger fabric.
Standards, Compliance, and the QNT Token
Fusion ships with compliance controls baked into the rollup rather than added as an afterthought. Specifically, Overledger Firewalls handle role-based access, KYC enforcement, and governance at the protocol level. Additionally, Quant has driven the ISO/TC 307 international standard for blockchain interoperability, with ISO 82098 forming the technical backbone of Fusion’s cross-ledger messaging. The QNT token sits at the center of access, staking, and settlement on the network. Enterprises need QNT to operate Fusion nodes, process transactions, and license institutional features. Consequently, institutional usage of Fusion translates directly into demand for the underlying token.
Why the Launch Matters Now
The timing reflects where institutional tokenization sits in 2026. Real-world assets on chain have crossed major milestones over the past year, and stablecoin volume continues to scale across multiple networks. However, asset fragmentation has remained the largest unsolved problem in institutional crypto. Fusion offers a credible answer by collapsing duplicate instruments into single unified assets while preserving native chain settlement. If banks and asset managers adopt the model, Quant will sit underneath a meaningful share of multi-chain institutional flow. The next signal to watch is which named institutions move from Quant Connect testing to live Fusion deployments in the coming weeks.
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