Add BSMS reference and key origin info

Author: Robert Spigler

Modern Hierarchy for Deterministic Multisignature Wallets.mediawiki

@@ -122,7 +122,9 @@ Public derivation is used at this level.
 
 ==Address Discovery==
 
-The multisig descriptors or descriptor template that is generated from the cosigners' combined key records should be used to generate and discover addresses. 
+The multisig descriptors or descriptor template that is generated from the cosigners' combined key records should be used to generate and discover addresses.
+
+Please see BIP__ (Bitcoin Secure Multisig Setup) for an introduction on descriptor templates.  [Waiting for merge of BSMS to link here].  The descriptor or descriptor template should contain the key origin information for maximum compatibility with BIP-0174.
 
 For example:
 
@@ -134,9 +136,9 @@ The following descriptor template and derivation path restrictions:
 
 Expands to the two concrete descriptors:
 
-<code>wsh(sortedmulti(2,[xfpForA/XY'/0'/0']XpubA/0/*,[xfpForB/XY'/0'/0']XpubB/0/*))#Checksum</code>
+<code>wsh(sortedmulti(2,[xfpForA/XY'/0'/0']XpubA/0/*,[xfpForB/XY'/0'/0']XpubB/0/*))</code>
 
-<code>wsh(sortedmulti(2,[xfpForA/XY'/0'/0']XpubA/1/*,[xfpForB/XY'/0'/0']XpubB/1/*))#Checksum</code>
+<code>wsh(sortedmulti(2,[xfpForA/XY'/0'/0']XpubA/1/*,[xfpForB/XY'/0'/0']XpubB/1/*))</code>
 
 To discover addresses, import both the receiving and change descriptors; respect the gap limit described below.
 
@@ -268,4 +270,4 @@ Original mailing list thread: https://lists.linuxfoundation.org/pipermail/bitcoi
 * [https://github.com/bitcoin/bitcoin/blob/master/doc/descriptors.md Output Descriptors]
 * [[bip-0174.mediawiki|BIP174 - Partially Signed Bitcoin Transaction Format]]
 * [[bip-0067.mediawiki|BIP67 - Deterministic Pay-to-script-hash multi-signature addresses through public key sorting]]
-
+* Bitcoin Secure Multisig Setup [Waiting For Merge]