+ /**
+ * An output to a P2WSH script which can be spent with a single signature after a CSV delay.
+ *
+ * The witness in the spending input should be:
+ * <BIP 143 signature> <empty vector> (MINIMALIF standard rule) <provided witnessScript>
+ *
+ * Note that the nSequence field in the spending input must be set to to_self_delay
+ * (which means the transaction is not broadcastable until at least to_self_delay
+ * blocks after the outpoint confirms).
+ *
+ * These are generally the result of a \"revocable\" output to us, spendable only by us unless
+ * it is an output from an old state which we broadcast (which should never happen).
+ *
+ * To derive the delayed_payment key which is used to sign for this input, you must pass the
+ * holder delayed_payment_base_key (ie the private key which corresponds to the pubkey in
+ * Sign::pubkeys().delayed_payment_basepoint) and the provided per_commitment_point to
+ * chan_utils::derive_private_key. The public key can be generated without the secret key
+ * using chan_utils::derive_public_key and only the delayed_payment_basepoint which appears in
+ * Sign::pubkeys().
+ *
+ * To derive the revocation_pubkey provided here (which is used in the witness
+ * script generation), you must pass the counterparty revocation_basepoint (which appears in the
+ * call to Sign::ready_channel) and the provided per_commitment point
+ * to chan_utils::derive_public_revocation_key.
+ *
+ * The witness script which is hashed and included in the output script_pubkey may be
+ * regenerated by passing the revocation_pubkey (derived as above), our delayed_payment pubkey
+ * (derived as above), and the to_self_delay contained here to
+ * chan_utils::get_revokeable_redeemscript.
+ */