Yes, the spec is open and contributed to by the main implementations, all open source. https://github.com/lightning/bolts https://github.com/lightning/bolts h

Yes, the spec is open and contributed to by the main implementations, all open source. https://github.com/lightning/bolts https://github.com/lightning/bolts https://github.com/lightningnetwork/lnd https://github.com/lightningnetwork/lnd https://github.com/ElementsProject/lightning https://github.com/ElementsProject/lightning https://github.com/ACINQ/eclair https://github.com/ACINQ/eclair https://github.com/lightningdevkit/rust-lightning https://github.com/lightningdevkit/rust-lightning