Protocol kernel
Coordinates the wallet's interactions with external devices through defined communication interfaces.
TriPylon / Operating system
Nucleo OS.
Security in focused layers.
The specialized, single-tasking operating system at the heart of TriPylon hardware wallets. Independent systems handle communication, cryptography, applications, blockchain logic and storage.
Modular C++ / Purpose-built for wallets
TRIPYLON / NUCLEOOS architecture
Host applicationComputer or phone
Protocol kernelCommunication
Nucleo OSFocused execution
Crypto · VM · chains · storageSpecialized systems
One operating systemDistinct responsibilities
01Single-tasking execution
02Modular architecture
03Focused security boundary
Inside the operating system
Five systems. Clear roles.
Nucleo divides key tasks among specialized components instead of placing every responsibility in one undifferentiated layer.
Cryptographic kernel
Provides a secure, time-deterministic environment for sensitive cryptographic operations.
Application VM
Runs applications in an execution environment built around an optimized subset of JavaScript.
Blockchain modules
Dedicated kernels provide specialized logic for EVM, Bitcoin and Tron workflows.
Storage subsystems
Separate components manage system settings and encrypted data storage.
Architecture by intent
Built to be understood and extended.
Nucleo is written in C++ and organized as modular components. The architecture is designed to make changes focused and rigorous review practical.
Execution model
A dedicated environment for one task at a time.
The single-tasking design keeps the operating system focused on the work a wallet needs to perform, with sensitive functions assigned to dedicated components.
Modular design
Specialized systems, one foundation.
Protocol handling, cryptography, applications, chain logic and storage remain distinct while working together as a coherent operating system.
Current connectivity
Defined interfaces to the outside.
Nucleo communicates with host software through current wired interfaces and a JSON-RPC-based protocol. WebHID enables interaction from a compatible browser.
01 / INTERFACESerial
02 / INTERFACEUSB HID
03 / PROTOCOLJSON-RPC
04 / BROWSERWebHID
Availability depends on the device and integration. These are software architecture interfaces, not a promise that every hardware variant exposes every connection.
Development roadmap
A foundation designed to grow.
The architecture leaves room for additional systems as future devices and applications evolve.
- 01Graphics & interface VM
Support for future devices with graphical displays.
- 02Power management
Battery operation, charging and energy efficiency.
- 03Network & HID systems
Additional compatibility and connectivity options.
- 04Peripheral controllers
Potential support for external memory, cameras and audio.
Roadmap items—including wireless connectivity—are not presented as features of the current TriPylon Touch hardware.
Explore what Nucleo powers.
See TriPylon Touch, the White Label offering, or the original firmware architecture note.