> proprietary development No, it is not only open source but a healthy mailing list with a lot of interested parties. > lead by Blockstream No, Poon and Dryj

> proprietary development No, it is not only open source but a healthy mailing list with a lot of interested parties. > lead by Blockstream No, Poon and Dryja are not employed by the company Blockstream. The latter seems to be more focused on their sidechain solutions. > the work is even patent-encumbered No, there is nothing to suggest this. Patents have to be public at some point.