Web3 Middleware

Transaction orchestration across digital asset ecosystems

Leading digital asset middleware providing industrial scale connectivity, transaction management, and interoperability to blockchain ecosystems.

Request a demo

Meet our Web3 Middleware product suite

High throughput transaction orchestration across leading blockchains

Building enterprise-grade digital asset solutions is complex. Kaleido's hardened middleware stack, used by enterprises in many of the most expansive industry projects, provides this common transaction orchestration layer to a multitude of ecosystems.
Comprehensive transaction orchestration engine
Handle heavy transaction loads with confidence leveraging an open, customization engine that provides auditability and visibility into transaction lifecycle throughout.
Instantly connect with a rich library of pre-built connectors
Build where the assets and liquidity are by integrating with public and private, EVM and non-EVM networks through a consistent API surface.
Dynamically generate APIs and listeners for any contract
Translate contract code into an API in seconds to rapidly accelerate your developers time to value.
Interoperability across chains and integration with traditional rails
Simplify integration to existing systems. Build trusted bridges between chains, financial systems, and trusted data sources.

Powered by Hyperledger FireFly

Web3 Middleware is built on Hyperledger FireFly, the first open source Web3 middleware. FireFly simplifies development and makes it easy to manage multiple use cases across both public and private chains from a single console.
Learn more
Hyperledger FireFly logo
When looking for custody and tokenization, other solutions were too inflexible. Kaleido’s middleware changed the game for us, enabling the level of customization and integration that we require for production.
Lead Architect,
Asset Manager

Frequently asked questions

What your legal, risk, and technology teams may ask.

What is Kaleido's Web3 Middleware?

Kaleido's Web3 Middleware is the transaction orchestration layer between enterprise systems and blockchains. It combines FireFly Enterprise, FireFly Connectors and Interop Hub to handle connectivity, transaction management, event streaming and cross-chain interoperability, so your applications work through one consistent API instead of each chain's internals.

Which Web3 Middleware product do we need?

Kaleido's three middleware products solve different problems. FireFly Connectors orchestrates transactions and streams events between your systems and a chain. FireFly Enterprise is the full Web3 gateway for building applications, with generated smart contract APIs. Interop Hub coordinates workflows and value movement across multiple chains and settlement rails, including DvP and PvP settlement.

Which blockchains does Kaleido's Web3 Middleware connect to?

Kaleido's Web3 Middleware connects to supported public and private, EVM and non-EVM networks, such as Ethereum, Besu, Bitcoin, Solana and Canton, through a library of pre-built connectors and one consistent API. That lets you build where the assets and liquidity are today, and add a network later without changing how your applications call the blockchain.

Is Kaleido's Web3 Middleware open source?

Kaleido's Web3 Middleware is built on FireFly, an open-source Web3 middleware project that Kaleido created and contributed to Hyperledger, now the Linux Foundation Decentralized Trust. FireFly is released under the Apache 2.0 license, so the core code isn't tied to a single vendor, and a single FireFly console manages use cases across both public and private chains.

How does the middleware handle high transaction volumes?

Kaleido's Web3 Middleware includes a transaction orchestration engine built for heavy loads, with auditability and visibility into each transaction's lifecycle. Transactions are delivered exactly once, events stream reliably back to your systems, and the stack runs as microservices on Kubernetes so each component scales independently.

Can the middleware connect blockchains to traditional payment systems?

Yes. Kaleido's Web3 Middleware builds trusted bridges between chains, financial systems and trusted data sources, including core banking systems and payment rails like RTGS. Interop Hub coordinates the on-chain and off-chain steps of each transaction, so settlement workflows span both worlds without manual reconciliation.

A platform for any digital asset & any use case

From tokenized securities and RWAs to stablecoins and deposits, our platform provides a single, unified foundation for your entire digital asset strategy.

Any asset

Stablecoins
Tokenized deposits
Tokenized funds
CBDCs
Digital securities
Commodities
Bonds
+ more

Any use case

Cross-border payments
Treasury management
Trade finance
Traceability
Foreign exchange
Remittance
Digital money issuance
+ more

Explore our other product lines:

Digital Assets

Create, onboard, and custody digital assets, and correlate on-chain activity to your financial systems with pluggable integrations for compliance and policy to build your future financial rails.
Learn more

Chain Infrastructure

Deploy and scale production-ready blockchain networks on your protocol of choice with enterprise-grade security, 99.99% uptime SLAs, and automated lifecycle management across any cloud, hybrid, or on‑prem environment.
Learn more

Kaleido is the #1 digital asset and blockchain platform on G2

Learn why companies ranging from large global institutions to cutting-edge start-ups have chosen Kaleido as the #1 asset tokenization and blockchain as a service provider.
Ranked #1 Asset Tokenization Platform on G2
Ranked #1 Blockchain-aaS Platform on G2
NSF Logo
Blockchain Interoperability Grant Winner
Blockchain research institute logo
Enterprise Blockchain
Award Winner