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134 sats \ 0 replies \ @Scoresby 18h \ on: Anyone used Sigbash? Purchase a special key for your multi sig (with conditions) bitcoin
They have a decent FAQ:
Here's our trust model and safeguards:
Trust Minimization:
- Sigbash can't move your funds on its own - it's just one key in your multisig setup
- We don't know what funds you're protecting until you request a signature
- Every xpub comes with a cryptographically signed receipt proving its conditions
- Our receipts are timestamped on the Bitcoin blockchain via OpenTimestamps
If Sigbash doesn't sign when it should: Contact support at sigbashsupport@proton.me with your signed receipt. We recommend having backup plans like timelocked recovery paths in your wallet setup.
If Sigbash signs when it shouldn't: This would require a significant breach of our security model. Our reputation as a service depends on never violating signing conditions, which is why we provide GPG-signed receipts attesting to them.
There is also a Citadel Dispatch episode with Arbedout, creator Sigbash.
I'm leery of cold storage services that rely on someone else doing something when I ask them.
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