How Boosty Labs Enabled Secure RGB Transactions on Ledger for Bitfinex

How do you bring next-generation Bitcoin assets to hardware wallets — without compromising the very security they are built for? That was the challenge Bitfinex brought to Boosty Labs.With the rise of RGB — a protocol designed to unlock advanced asset functionality on Bitcoin — the goal was clear: enable users to interact with RGB assets securely, directly from Ledger devices. But doing so required rethinking how complex Bitcoin transactions are handled in one of the most constrained environments in crypto.
Here’s how we made it happen.

Here’s how we did it

The Challenge

Bitcoin is evolving — but its infrastructure isn’t designed for complex asset logic.
RGB introduces a powerful new layer for issuing and transferring assets on Bitcoin, but:

At the same time, Bitfinex needed a solution that would:

☑️ Maintain Ledger-level security standards
☑️ Support modern Bitcoin transaction formats (including Taproot)
☑️ Enable safe and transparent interaction with RGB assets

Our Solution

Having deep experience in Bitcoin and emerging protocols like RGB, Boosty Labs designed a solution that keeps the device lightweight — while making the experience feel seamless.We extended the Ledger Bitcoin app to support RGB transactions in a way that is both secure and intuitive for end users.

What we delivered:

Clear signing experience for RGB transactions
Users can review essential transaction details directly on their device — ensuring full transparency before signing
Secure PSBT signing with RGB data
Enabled support for complex transaction structures while preserving strict security guarantees
Lightweight on-device logic
Heavy processing is handled off-device, while only critical, verifiable data is displayed on Ledger
Fail-safe validation mechanisms
Built-in safeguards to prevent incorrect or malicious transaction signing
Future-ready architecture
Designed to evolve alongside the RGB ecosystem and future Bitcoin upgrades

Impact and Results

The result is a major step forward in making Bitcoin more than just a store of value:

Secure
RGB transaction signing on hardware wallets
Full
transparency for users before every transaction
Seamless
experience despite strict hardware constraint
Strong foundation
for Bitcoin-native asset ecosystems
Enabled Bitfinex
to expand into next-generation Bitcoin products

What sets us apart?

9
Years of experiencernin the blockchain space
300+
Successful projects completed
250+
Clients worldwide
150+
Skilled engineers on the team

Build with Us

Looking to scale your DeFi platform or optimize blockchain performance? Paraswap’s success demonstrates our ability to build high-throughput systems that maintain exceptional performance while processing billions in transaction volume.

Since 2017, Boosty Labs has been the trusted partner for over 100 companies, delivering expert software development in Web3, Blockchain, Fintech, AI, and Cloud. With a team of 150+ skilled developers, we’ve worked with industry leaders like ConsenSys, McKinsey, and Ledger to create scalable, tailored solutions that drive success.

Whether you’re launching a new DeFi protocol, enhancing an existing platform, or requiring specialized blockchain development expertise, we bring the technical knowledge and market understanding to make it happen.