Hello, I think there _might_ be something missing in the htlc outputs of the Figure 4. The payee should wait for a delay before being able to use the R, therefore the output would be: ``` R-VALUE & OP_CSV & SIG-PAYEE OR HTLC-TIMEOUT & SIG-PAYER OR REVOCATION-B & SIG A ``` Sorry I don't know how to make a PR for this, the file htlc.eps looks chinese to me ! Cheers, Pierre