The Real-Time
Bitcoin Multisig Coordinator
Stop emailing PSBT files. Coordinate Bitcoin multisig teams instantly.
No accounts.No database.End-to-End Encrypted.
Why change your workflow?
Manual file merging is error-prone and slow. There is a better way.
Manually merging 5 different email attachments. Files stored permanently on Slack/Google servers. Slow, asynchronous delays between signers.
Real-time merging. Everyone sees the same state. Data lives in RAM, encrypted, and vanishes on expiry. Instant broadcast once signatures are collected.
Code is Law. Physics is Enforcement.
We enforce the Universal Declaration of Human Rights not through policy, but through cryptographic guarantees.
Article 12
"No one shall be subjected to arbitrary interference with his privacy."
Enforced via AES-256-GCM.
Article 20
"Everyone has the right to freedom of peaceful assembly and association."
Enforced via Ephemeral Rooms.
Article 17
"No one shall be arbitrarily deprived of his property."
Enforced via Non-Custodial Multisig.
Article 19
"Right to freedom of opinion and expression... through any media."
Enforced via Unstoppable Code.
The Blind Relay
We forward your encrypted packets. We never hold the keys.
Built for Organizational Resilience
Single-signature wallets are a liability for teams.
Multisig ensures no single person—not even the CEO—is a single point of failure.
Flexible "M-of-N" Consensus
Don't be locked into a rigid structure. Whether you need a 2-of-3 for founders or a 3-of-5 for the board, you define the quorum required to authorize funds.
Mitigate "Key Person" Risk
What if the CEO is in an accident or loses access to their keys? In a multisig setup, the remaining board members can still approve payroll, ensuring business continuity.
Security without the friction
Historically, coordinating a board vote on-chain was slow and painful. SigningRoom fixes this. We combine the governance of multisig with the speed of a real-time chat room.
Technical Standards
Built on open Bitcoin protocols and industrial encryption.
Compatible with your Hardware Wallets & Software
Frequently Asked Questions
It stays on your hardware wallet or signing device. You only upload a PSBT (Partially Signed Bitcoin Transaction), which contains no private keys, only public data and signatures.
No. Your transaction is encrypted in your browser using a key that is contained in the URL link hash (fragment). This key is never sent to our servers, so we literally cannot decrypt your data.
Yes. SigningRoom is a 100% free, open-source public good for the Bitcoin community.
There are no paid tiers, no "enterprise" locks, and no hidden fees. All features—including 20-signer rooms and Audit Logs—are available to everyone.
Ready to coordinate?
No accounts required. Just upload a PSBT and share the secure link.
Start New Signing