From 192cfbbacdb13782077b2a5e56a724ccad67f1c1 Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter.wuille@gmail.com>
Date: Wed, 2 Aug 2017 14:57:48 -0700
Subject: [PATCH 1/3] Add more reference implementations

---
 bip-0173.mediawiki | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/bip-0173.mediawiki b/bip-0173.mediawiki
index af2516d..4d3646e 100644
--- a/bip-0173.mediawiki
+++ b/bip-0173.mediawiki
@@ -242,8 +242,10 @@ P2PKH addresses can be used.
 * Reference encoder and decoder:
 ** [https://github.com/sipa/bech32/tree/master/ref/c For C]
 ** [https://github.com/sipa/bech32/tree/master/ref/javascript For JavaScript]
+** [https://github.com/sipa/bech32/tree/master/ref/go For Go]
 ** [https://github.com/sipa/bech32/tree/master/ref/python For Python]
 ** [https://github.com/sipa/bech32/tree/master/ref/haskell For Haskell]
+** [https://github.com/sipa/bech32/tree/master/ref/ruby For Ruby]
 ** [https://github.com/sipa/bech32/tree/master/ref/rust For Rust]
 
 * Fancy decoder that localizes errors:

From 9b1e7dc8f5cba6937b95bd19c55c8b1af2fd05c5 Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter.wuille@gmail.com>
Date: Wed, 2 Aug 2017 14:58:47 -0700
Subject: [PATCH 2/3] Fix incorrect tests for OP_n in v1+ witnesses

---
 bip-0173.mediawiki | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/bip-0173.mediawiki b/bip-0173.mediawiki
index 4d3646e..d9b3a03 100644
--- a/bip-0173.mediawiki
+++ b/bip-0173.mediawiki
@@ -266,9 +266,9 @@ The following list gives valid segwit addresses and the scriptPubKey that they
 translate to in hex.
 * <tt>BC1QW508D6QEJXTDG4Y5R3ZARVARY0C5XW7KV8F3T4</tt>: <tt>0014751e76e8199196d454941c45d1b3a323f1433bd6</tt>
 * <tt>tb1qrp33g0q5c5txsp9arysrx4k6zdkfs4nce4xj0gdcccefvpysxf3q0sl5k7</tt>: <tt>00201863143c14c5166804bd19203356da136c985678cd4d27a1b8c6329604903262</tt>
-* <tt>bc1pw508d6qejxtdg4y5r3zarvary0c5xw7kw508d6qejxtdg4y5r3zarvary0c5xw7k7grplx</tt>: <tt>8128751e76e8199196d454941c45d1b3a323f1433bd6751e76e8199196d454941c45d1b3a323f1433bd6</tt>
-* <tt>BC1SW50QA3JX3S</tt>: <tt>9002751e</tt>
-* <tt>bc1zw508d6qejxtdg4y5r3zarvaryvg6kdaj</tt>: <tt>8210751e76e8199196d454941c45d1b3a323</tt>
+* <tt>bc1pw508d6qejxtdg4y5r3zarvary0c5xw7kw508d6qejxtdg4y5r3zarvary0c5xw7k7grplx</tt>: <tt>5128751e76e8199196d454941c45d1b3a323f1433bd6751e76e8199196d454941c45d1b3a323f1433bd6</tt>
+* <tt>BC1SW50QA3JX3S</tt>: <tt>6002751e</tt>
+* <tt>bc1zw508d6qejxtdg4y5r3zarvaryvg6kdaj</tt>: <tt>5210751e76e8199196d454941c45d1b3a323</tt>
 * <tt>tb1qqqqqp399et2xygdj5xreqhjjvcmzhxw4aywxecjdzew6hylgvsesrxh6hy</tt>: <tt>0020000000c4a5cad46221b2a187905e5266362b99d5e91c6ce24d165dab93e86433</tt>
 
 The following list gives invalid segwit addresses and the reason for

From 59391f1862873a66af0a15fe776cc335412cc875 Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter.wuille@gmail.com>
Date: Thu, 3 Aug 2017 12:14:43 -0700
Subject: [PATCH 3/3] Elaborate on the encoding of witness versions

---
 bip-0173.mediawiki | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/bip-0173.mediawiki b/bip-0173.mediawiki
index d9b3a03..0c911b4 100644
--- a/bip-0173.mediawiki
+++ b/bip-0173.mediawiki
@@ -227,6 +227,12 @@ program is neither 20 nor 32 bytes, the script must fail.''
 As a result of the previous rules, addresses are always between 14 and 74 characters long, and their length modulo 8 cannot be 0, 3, or 5.
 Version 0 witness addresses are always 42 or 62 characters, but implementations MUST allow the use of any version.
 
+Implementations should take special care when converting the address to a
+scriptPubkey, where witness version ''n'' is stored as ''OP_n''. OP_0 is
+encoded as 0x00, but OP_1 through OP_16 are encoded as 0x51 though 0x60
+(81 to 96 in decimal). If a bech32 address is converted to an incorrect
+scriptPubKey the result will likely be either unspendable or insecure.
+
 ===Compatibility===
 
 Only new software will be able to use these addresses, and only for