Bitcoin computing stack

A Computer built for Bitcoin.

Establishing a complete computing ecosystem built on Bitcoin and Urbit.

Solving challenges for P2P Bitcoin usage:

  • Decentralized software distribution for apps
  • Adding to Bitcoin protocol implementation diversity
  • Self-hosted & Self-custodied

# install instructions on GitHub → github.com/gwbtc/groundwire

Groundwire Explainer

Groundwire is a Bitcoin-friendly OS built on Urbit. It's a full virtual computer tuned for sovereign computing applications, especially Bitcoin.

Personal Server

Groundwire is a personal server on a P2P network that networks using Bitcoin addresses, giving you a sovereign deployment surface, free from gatekeepers.

Nostr Social Client

Nostrill is an Urbit-native Nostr client lets you connect with other Bitcoiners through a self-hosted, censorship-resistant social layer.

Bitcoin-based Networking

Groundwire migrated Urbit IDs away from the Ethereum ERC-721 standard, ensuring networking keys align with Bitcoin-native primitives.

Technically speaking, Groundwire rewires Urbit networking so comets can publish keys through Bitcoin ordinal inscriptions—pairing sovereign identity with a resilient, Bitcoin-aligned stack.

Documentation

Groundwire Core

The rewrite of Urbit networking that allows comets to use Bitcoin ordinal inscriptions for setting networking keys.

Dive into Groundwire Core →

Nostrill

The Urbit-native Nostr client powering sovereign social networking for Groundwire users.

Explore Nostrill docs →

Urbit-native SPV Wallet

A lightweight Bitcoin wallet integrated into Groundwire for trust-minimized payments inside your node.

Review SPV wallet guide →