Yes, you can sign a transaction offline using our multisig vault recovery tool, which is open source: https://github.com/coinbase/multisig-tool https://github.

Yes, you can sign a transaction offline using our multisig vault recovery tool, which is open source: https://github.com/coinbase/multisig-tool https://github.com/coinbase/multisig-tool You can use it to generate a transaction payload which can be broadcast from a client of your choice, including Toshi, our open source bitcoin node: https://toshi.io/docs/#relay-transaction https://toshi.io/docs/#relay-transaction