We think that in order to scale Lightning, this is indeed the best path going forward. But we will offer users to self host the Greenlight environment and we will keep maintaining the "node on device" offering.
I wonder if the Greenlight environment can be generalized into a protocol implemented by all the LN node implementations.
Like is there anything that's really greenlight specific, or do you foresee that all nodes will get this "hosting" ability?
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We're working with the Blockstream team to open source it as a first step.
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It appears there's active work on this and attempts to expand remote signing to other implementations: https://gitlab.com/lightning-signer/docs/-/blob/master/README.md
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