[Lightning-dev] We don't need R-Value, how OP_CODESEPARATOR saves the day

[Nicolas Dorier]

I managed to adapt the payment channel script to use less space.

This version is winning around 32 bytes in the scriptpubkey (for the R
value) as well as 70 bytes in the signature when Alice close the channel.

Alice closing the channel:
http://n.bitcoin.ninja/checkscript?savedScript=51225750-f245-45b5-a86c-6ca1e87dcafb


Bob using revocation:
http://n.bitcoin.ninja/checkscript?savedScript=c4d7ebaa-5a79-4c03-ab55-c499854f1e94


This amount to 100 bytes saved between the anchor transaction + commitment
broadcasted.
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