Protect shared Bitcoin with collaborative multi-signature security that requires multiple approvals.
SatRyn makes it simple for families, business partners, and groups to protect shared Bitcoin using multisig vaults. Instead of trusting a single person with full control, you define how many approvals are needed to move funds.
With a 2-of-3 vault, for example, any two family members must sign a transaction before funds can move. No single person can spend unilaterally, and losing one key does not mean losing access. This collaborative approach eliminates single points of failure and builds trust among all parties.
No single person can move funds without approval from others
Losing one key does not mean losing your Bitcoin
Each cosigner holds their own key on their own device
Full transparency with every transaction visible to all members
Everything your family or group needs to collaboratively manage Bitcoin with confidence and security.
Set up 2-of-3, 3-of-5, or any m-of-n configuration for family funds. Define exactly how many cosigners must approve before any transaction can be broadcast to the network.
Add cosigners from hardware wallets like Coldcard, Ledger, and Trezor. Each family member can hold their key on a dedicated hardware device for maximum security.
Create, sign, and finalize Partially Signed Bitcoin Transactions across devices. Pass a PSBT between family members via QR code, file share, or AirDrop until enough signatures are collected.
Family members can monitor vault balances and transaction history without having spending access. Stay informed without risk, perfect for younger family members or passive observers.
Encrypted backups ensure no single point of failure. Distribute backup responsibility across family members so the vault can always be recovered even if one backup is lost.
Track addresses and transaction history per family member. Label each cosigner, organize addresses by person, and maintain a clear record of who received what and when.
Creating a collaborative multisig vault is straightforward. Each family member participates in the setup from their own device.
One family member initiates the multisig vault and chooses the m-of-n configuration, such as 2-of-3 for a family of three.
Each family member shares their extended public key from SatRyn, a hardware wallet, or another compatible app to join the vault.
When funds need to move, create a PSBT and pass it to cosigners for approval. Once enough signatures are collected, broadcast the transaction.
Multisig is not just about day-to-day security. It is one of the most powerful tools for Bitcoin estate planning. By distributing keys across trusted family members, an attorney, or a secure backup location, you ensure your Bitcoin can be recovered by your heirs without relying on any third party.
SatRyn provides the tools to create inheritance-ready vaults, document your key distribution, and set up recovery procedures that your family can follow. Combined with encrypted backups and clear instructions, your Bitcoin legacy is protected for generations.
Learn About Inheritance →Download SatRyn and set up a multisig vault for your family. Collaborative custody means no single point of failure and no single point of trust.