🔐 Live Bitcoin Multisig Signer – Automation for Shared Custody
I'm working on a system where a live server can automatically sign Bitcoin transactions (PSBTs) as part of a 2-of-3 multisig setup.
Use case:
1 key = your mobile wallet (e.g. Nunchuk)
1 key = cold storage
1 key = held on a live server that signs PSBTs under certain rules
📩 You send a PSBT to the server → it reviews it → signs it → sends it back.
The idea is to automate multisig signing while still requiring multiple parties to approve a transaction.
✅ Pros
Semi-automated custody without full trust
Rules can be enforced (limit amounts, whitelist addresses, etc.)
Useful for DAOs, families, small orgs, or programmable escrow
⚠️ Cons
Relies on trust in the signing server
If compromised, it weakens the multisig
Downtime means delays in spending
Re-centralization risk?
💭 Would you trust a system like this?
What conditions would make it safe enough?
Do you see it as smart coordination or a security loophole?
Open to feedback & debate.
#bitcoin #multisig #automation #custody #nostr #psbt
