Spaces on Bitcoin

Spaces are nice & memorable sovereign handles anchored in Bitcoin with minimal on-chain footprint. They are easier to share compared to an npub, and can be used to sign things just like a regular public key!

What makes spaces special?

Spaces are anchored in Bitcoin, the most secure Proof-of-Work blockchain, and have the following properties:

• Primary spaces are community identifiers, capped at ~3600 per year, acquired through permissionless auctions on the Bitcoin blockchain.

• Each primary Space is a community that may issue sovereign handles off-chain known as subspaces.

• Spaces AND subspaces (once allocated) are permissionless and as secure as Bitcoin itself! No bridges, slashing, or any kind of optimistic security.

• The spaces protocol is designed with zk-light clients in mind making these identities verifiable on resource constrained devices.

• Subspaces do not need to trust the community operator once allocated, and they can do 100% of their transactions on-chain if they wish.

• Minimal on-chain footprint.

Spaces vs. ENS

For full verification, you can sync the entire spaces protocol with a pruned Bitcoin full node on an old Raspberry PI. Bitcoin is the most secure Proof-of-Work blockchain today, and it's relatively lightweight compared to running an Ethereum node. The majority of ENS integrations trust centralized third-parties defeating the whole purpose of decentralized identities.

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Getting Started

Download and install spaces

Deep Dive

Understand how the protocol works

Explorer

Checkout the explorer