Hey Thomas, Just to clear the air, I am not OutCast3k, but I have submitted various PRs to coinb.in under multiple handle names, and also Copay and Electrum. (You could say I have multisig in my blood if you want to be cheesy) I think I'm going to go ahead and draft up a BIP and submit it here just to get the ball rolling. Any ideas or input can be sent to me directly via email. I'll also start a Telegram group chat https://t.me/joinchat/AAAAAAutbBADJuHRD7YvHw in case anyone wants to join in on the discussion. Thanks, Jon 2017-01-10 18:18 GMT+09:00 Thomas Kerin : > Hey, > > Firstly, your project coinb.in is really cool, I've used it a bit back in > the day :-) > > It makes sense why you're looking for this proposal. I'm pretty sure on > top of a serialisation of an unsigned tx with the scriptpubkey (it is to > deliver signing data to the wallet too?) then you'll also want a protocol > to request signatures. > > I worked on this problem before, when I was using your site and a tool of > mine to carry out transactions. I would up writing a BIP that's basically > the same (in message contents, not format) as Jonas's hardware signing BIP. > > I think he also realised that it's not just for hardware wallets, it's > also perfect for a BitGo wallet to use to talk to a GreenAddress wallet. It > seems to cover the web case nicely. > > (My app was one where users could supply an xpub for multisigs to the > server, get txs, and do signing offline or in the browser) > > Maybe have a look over it and see if it starts to capture some of the > things you would want! > > All the best, > Thomas > > > > On 9 January 2017 10:36:49 CET, "木ノ下じょな via bitcoin-dev" < > bitcoin-dev@lists.linuxfoundation.org> wrote: >> >> I have been seeing issues like the following many times on all the >> different projects that support multisig with users responsible for partial >> transaction transport. >> >> https://github.com/OutCast3k/coinbin/issues/73 >> >> I would like to gather opinions before proposing a BIP, (like whether we >> need one or not) so please let me know what you think. >> >> Basically, Electrum, Copay, Coinb.in, Bitcoin Core, etc. all have >> different methodology for serializing partially signed multisig raw >> transactions, as well as not-signed raw transactions regardless of >> scriptPubkey. >> >> I think we should all be on the same page when serializing not-signed and >> partially signed transactions so that the person could look at the data >> alone and know what is necessary and how to manipulate it to sign and >> complete the transaction. >> >> - Jon >> >> -- >> -----BEGIN PGP PUBLIC KEY BLOCK----- >> Comment: http://openpgpjs.org >> >> xsBNBFTmJ8oBB/9rd+7XLxZG/x/KnhkVK2WBG8ySx91fs+qQfHIK1JrakSV3 >> x6x0cK3XLClASLLDomm7Od3Q/fMFzdwCEqj6z60T8wgKxsjWYSGL3mq8ucdv >> iBjC3wGauk5dQKtT7tkCFyQQbX/uMsBM4ccGBICoDmIJlwJIj7fAZVqGxGOM >> bO1RhYb4dbQA2qxYP7wSsHJ6/ZNAXyEphOj6blUzdqO0exAbCOZWWF+E/1SC >> EuKO4RmL7Imdep7uc2Qze1UpJCZx7ASHl2IZ4UD0G3Qr3pI6/jvNlaqCTa3U >> 3/YeJwEubFsd0AVy0zs809RcKKgX3W1q+hVDTeWinem9RiOG/vT+Eec/ABEB >> AAHNI2tpbm9zaGl0YSA8a2lub3NoaXRham9uYUBnbWFpbC5jb20+wsByBBAB >> CAAmBQJU5ifRBgsJCAcDAgkQRB9iZ30dlisEFQgCCgMWAgECGwMCHgEAAC6Z >> B/9otobf0ASHYdlUBeIPXdDopyjQhR2RiZGYaS0VZ5zzHYLDDMW6ZIYm5CjO >> Fc09ETLGKFxH2RcCOK2dzwz+KRU4xqOrt/l5gyd50cFE1nOhUN9+/XaPgrou >> WhyT9xLeGit7Xqhht93z2+VanTtJAG6lWbAZLIZAMGMuLX6sJDCO0GiO5zxa >> 02Q2D3kh5GL57A5+oVOna12JBRaIA5eBGKVCp3KToT/z48pxBe3WAmLo0zXr >> hEgTSzssfb2zTwtB3Ogoedj+cU2bHJvJ8upS/jMr3TcdguySmxJlGpocVC/e >> qxq12Njv+LiETOrD8atGmXCnA+nFNljBkz+l6ADl93jHzsBNBFTmJ9EBCACu >> Qq9ZnP+aLU/Rt6clAfiHfTFBsJvLKsdIKeE6qHzsU1E7A7bGQKTtLEnhCCQE >> W+OQP+sgbOWowIdH9PpwLJ3Op+NhvLlMxRvbT36LwCmBL0yD7bMqxxmmVj8n >> vlMMRSe4wDSIG19Oy7701imnHZPm/pnPlneg/Meu/UffpcDWYBbAFX8nrXPY >> vkVULcI/qTcCxW/+S9fwoXjQhWHaiJJ6y3cYOSitN31W9zgcMvLwLX3JgDxE >> flkwq/M+ZkfCYnS3GAPEt8GkVKy2eHtCJuNkGFlCAmKMX0yWzHRAkqOMN5KP >> LFbkKY2GQl13ztWp82QYJZpj5af6dmyUosurn6AZABEBAAHCwF8EGAEIABMF >> AlTmJ9QJEEQfYmd9HZYrAhsMAABKbgf/Ulu5JAk4fXgH0DtkMmdkFiKEFdkW >> 0Wkw7Vhd5eZ4NzeP9kOkD01OGweT9hqzwhfT2CNXCGxh4UnvEM1ZMFypIKdq >> 0XpLLJMrDOQO021UjAa56vHZPAVmAM01z5VzHJ7ekjgwrgMLmVkm0jWKEKaO >> n/MW7CyphG7QcZ6cJX2f6uJcekBlZRw9TNYRnojMjkutlOVhYJ3J78nc/k0p >> kcgV63GB6D7wHRF4TVe4xIBqKpbBhhN+ISwFN1z+gx3lfyRMSmiTSrGdKEQe >> XSIQKG8XZQZUDhLNkqPS+7EMV1g7+lOfT4GhLL68dUXDa1e9YxGH6zkpVECw >> Spe3vsHZr6CqFg== >> =/vUJ >> -----END PGP PUBLIC KEY BLOCK----- >> > > -- > Sent from my Android device with K-9 Mail. 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