diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 9f92ab72c9..4f14019e96 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -12,8 +12,8 @@ revolves around a meritocracy where contributors earn trust from the developer
 community over time. Nevertheless, some hierarchy is necessary for practical
 purposes. As such, there are repository "maintainers" who are responsible for
 merging pull requests, as well as a "lead maintainer" who is responsible for the
-release cycle as well as overall merging, moderation and appointment of
-maintainers.
+[release cycle](/doc/release-process.md) as well as overall merging, moderation
+and appointment of maintainers.
 
 Getting Started
 ---------------
@@ -169,9 +169,14 @@ in the body of the pull request to indicate tasks are pending.
 
 At this stage, one should expect comments and review from other contributors. You
 can add more commits to your pull request by committing them locally and pushing
-to your fork until you have satisfied all feedback.
+to your fork.
 
-Note: Code review is a burdensome but important part of the development process, and as such, certain types of pull requests are rejected. In general, if the **improvements** do not warrant the **review effort** required, the PR has a high chance of being rejected. It is up to the PR author to convince the reviewers that the changes warrant the review effort, and if reviewers are "Concept NACK'ing" the PR, the author may need to present arguments and/or do research backing their suggested changes.
+You are expected to reply to any review comments before your pull request is
+merged. You may update the code or reject the feedback if you do not agree with
+it, but you should express so in a reply. If there is outstanding feedback and
+you are not actively working on it, your pull request may be closed.
+
+Please refer to the [peer review](#peer-review) section below for more details.
 
 ### Squashing Commits
 
@@ -302,6 +307,14 @@ maintainers take into account the peer review when determining if there is
 consensus to merge a pull request (remember that discussions may have been
 spread out over GitHub, mailing list and IRC discussions).
 
+Code review is a burdensome but important part of the development process, and
+as such, certain types of pull requests are rejected. In general, if the
+**improvements** do not warrant the **review effort** required, the PR has a
+high chance of being rejected. It is up to the PR author to convince the
+reviewers that the changes warrant the review effort, and if reviewers are
+"Concept NACK'ing" the PR, the author may need to present arguments and/or do
+research backing their suggested changes.
+
 #### Conceptual Review
 
 A review can be a conceptual review, where the reviewer leaves a comment
@@ -482,11 +495,6 @@ the contents onto the [Tracker](https://docs.google.com/spreadsheets/d/1DnKxat0S
 
 When pasting the contents, make sure to split the values into the cells so every line is not present under commit hash.
 
-Release Policy
---------------
-
-The project leader is the release manager for each Dash Core release.
-
 Copyright
 ---------
 
diff --git a/contrib/guix/INSTALL.md b/contrib/guix/INSTALL.md
index c7050b2ae3..2ab9968bdf 100644
--- a/contrib/guix/INSTALL.md
+++ b/contrib/guix/INSTALL.md
@@ -364,7 +364,7 @@ This is especially notable because Ubuntu Focal packages `libgit2 v0.28.4`, and
 Should you be in this situation, you need to build both `libgit2 v1.1.x` and
 `guile-git` from source.
 
-Source: http://logs.guix.gnu.org/guix/2020-11-12.log#232527
+Source: https://logs.guix.gnu.org/guix/2020-11-12.log#232527
 
 ##### `{scheme,guile}-bytestructures` v1.0.8 and v1.0.9 are broken for Guile v2.2
 
diff --git a/contrib/guix/README.md b/contrib/guix/README.md
index 698deb47ac..23050cec48 100644
--- a/contrib/guix/README.md
+++ b/contrib/guix/README.md
@@ -430,6 +430,6 @@ used.
 If you start `guix-daemon` using an init script, you can edit said script to
 supply this flag.
 
-[b17e]: http://bootstrappable.org/
+[b17e]: https://bootstrappable.org/
 [r12e/source-date-epoch]: https://reproducible-builds.org/docs/source-date-epoch/
 [env-vars-list]: #recognized-environment-variables
diff --git a/doc/developer-notes.md b/doc/developer-notes.md
index ab0783840e..248557919a 100644
--- a/doc/developer-notes.md
+++ b/doc/developer-notes.md
@@ -447,7 +447,7 @@ make cov
 
 Profiling is a good way to get a precise idea of where time is being spent in
 code. One tool for doing profiling on Linux platforms is called
-[`perf`](http://www.brendangregg.com/perf.html), and has been integrated into
+[`perf`](https://www.brendangregg.com/perf.html), and has been integrated into
 the functional test framework. Perf can observe a running process and sample
 (at some frequency) where its execution is.
 
diff --git a/src/bitcoin-tx.cpp b/src/bitcoin-tx.cpp
index 99889a3e96..0eb122f086 100644
--- a/src/bitcoin-tx.cpp
+++ b/src/bitcoin-tx.cpp
@@ -383,13 +383,16 @@ static void MutateTxAddOutData(CMutableTransaction& tx, const std::string& strIn
     if (pos==0)
         throw std::runtime_error("TX output value not specified");
 
-    if (pos != std::string::npos) {
+    if (pos == std::string::npos) {
+        pos = 0;
+    } else {
         // Extract and validate VALUE
         value = ExtractAndValidateValue(strInput.substr(0, pos));
+        ++pos;
     }
 
     // extract and validate DATA
-    std::string strData = strInput.substr(pos + 1, std::string::npos);
+    const std::string strData{strInput.substr(pos, std::string::npos)};
 
     if (!IsHex(strData))
         throw std::runtime_error("invalid TX output data");
diff --git a/src/qt/addressbookpage.cpp b/src/qt/addressbookpage.cpp
index b9db3fa5eb..c0f3ebf343 100644
--- a/src/qt/addressbookpage.cpp
+++ b/src/qt/addressbookpage.cpp
@@ -306,7 +306,7 @@ void AddressBookPage::on_exportButton_clicked()
     QString filename = GUIUtil::getSaveFileName(this,
         tr("Export Address List"), QString(),
         /*: Expanded name of the CSV file format.
-            See https://en.wikipedia.org/wiki/Comma-separated_values */
+            See: https://en.wikipedia.org/wiki/Comma-separated_values. */
         tr("Comma separated file") + QLatin1String(" (*.csv)"), nullptr);
 
     if (filename.isNull())
diff --git a/src/qt/qrimagewidget.cpp b/src/qt/qrimagewidget.cpp
index b14416f60c..40a55a9e4b 100644
--- a/src/qt/qrimagewidget.cpp
+++ b/src/qt/qrimagewidget.cpp
@@ -133,7 +133,7 @@ void QRImageWidget::saveImage()
     QString fn = GUIUtil::getSaveFileName(
         this, tr("Save QR Code"), QString(),
         /*: Expanded name of the PNG file format.
-            See https://en.wikipedia.org/wiki/Portable_Network_Graphics */
+            See: https://en.wikipedia.org/wiki/Portable_Network_Graphics. */
         tr("PNG Image") + QLatin1String(" (*.png)"), nullptr);
     if (!fn.isEmpty())
     {
diff --git a/src/qt/transactionview.cpp b/src/qt/transactionview.cpp
index 619f120229..80e030c24f 100644
--- a/src/qt/transactionview.cpp
+++ b/src/qt/transactionview.cpp
@@ -364,7 +364,7 @@ void TransactionView::exportClicked()
     QString filename = GUIUtil::getSaveFileName(this,
         tr("Export Transaction History"), QString(),
         /*: Expanded name of the CSV file format.
-            See https://en.wikipedia.org/wiki/Comma-separated_values */
+            See: https://en.wikipedia.org/wiki/Comma-separated_values. */
         tr("Comma separated file") + QLatin1String(" (*.csv)"), nullptr);
 
     if (filename.isNull())
diff --git a/src/rpc/mining.cpp b/src/rpc/mining.cpp
index e29eab9d8b..261410a36e 100644
--- a/src/rpc/mining.cpp
+++ b/src/rpc/mining.cpp
@@ -1143,7 +1143,8 @@ static RPCHelpMan estimatesmartfee()
     "have been observed to make an estimate for any number of blocks."},
             }},
         RPCExamples{
-            HelpExampleCli("estimatesmartfee", "6")
+            HelpExampleCli("estimatesmartfee", "6") +
+            HelpExampleRpc("estimatesmartfee", "6")
         },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
diff --git a/src/rpc/misc.cpp b/src/rpc/misc.cpp
index 6872f41115..4670387766 100644
--- a/src/rpc/misc.cpp
+++ b/src/rpc/misc.cpp
@@ -308,7 +308,7 @@ static RPCHelpMan createmultisig()
             "\nCreate a multisig address from 2 public keys\n"
             + HelpExampleCli("createmultisig", "2 \"[\\\"03789ed0bb717d88f7d321a368d905e7430207ebbd82bd342cf11ae157a7ace5fd\\\",\\\"03dbc6764b8884a92e871274b87583e6d5c2a58819473e17e107ef3f6aa5a61626\\\"]\"") +
             "\nAs a JSON-RPC call\n"
-            + HelpExampleRpc("createmultisig", "2, \"[\\\"03789ed0bb717d88f7d321a368d905e7430207ebbd82bd342cf11ae157a7ace5fd\\\",\\\"03dbc6764b8884a92e871274b87583e6d5c2a58819473e17e107ef3f6aa5a61626\\\"]\"")
+            + HelpExampleRpc("createmultisig", "2, [\"03789ed0bb717d88f7d321a368d905e7430207ebbd82bd342cf11ae157a7ace5fd\",\"03dbc6764b8884a92e871274b87583e6d5c2a58819473e17e107ef3f6aa5a61626\"]")
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
@@ -345,6 +345,8 @@ static RPCHelpMan createmultisig()
 
 static RPCHelpMan getdescriptorinfo()
 {
+    const std::string EXAMPLE_DESCRIPTOR = "wpkh([d34db33f/84h/0h/0h]0279be667ef9dcbbac55a06295Ce870b07029Bfcdb2dce28d959f2815b16f81798)";
+
     return RPCHelpMan{"getdescriptorinfo",
         {"\nAnalyses a descriptor.\n"},
         {
@@ -362,7 +364,9 @@ static RPCHelpMan getdescriptorinfo()
         },
         RPCExamples{
         "\nAnalyse a descriptor\n"
-        + HelpExampleCli("getdescriptorinfo", "\"pkh([d34db33f/84h/0h/0h]0279be667ef9dcbbac55a06295Ce870b07029Bfcdb2dce28d959f2815b16f81798)\"")
+        +   HelpExampleCli("getdescriptorinfo", "\"" + EXAMPLE_DESCRIPTOR + "\"") +
+            HelpExampleRpc("getdescriptorinfo", "\"" + EXAMPLE_DESCRIPTOR + "\"")
+
         },
     [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
@@ -389,6 +393,8 @@ static RPCHelpMan getdescriptorinfo()
 
 static RPCHelpMan deriveaddresses()
 {
+    const std::string EXAMPLE_DESCRIPTOR = "wpkh([d34db33f/84h/0h/0h]xpub6DJ2dNUysrn5Vt36jH2KLBT2i1auw1tTSSomg8PhqNiUtx8QX2SvC9nrHu81fT41fvDUnhMjEzQgXnQjKEu3oaqMSzhSrHMxyyoEAmUHQbY/0/*)#cjjspncu";
+
     return RPCHelpMan{"deriveaddresses",
         "\nDerives one or more addresses corresponding to an output descriptor.\n"
         "Examples of output descriptors are:\n"
@@ -410,7 +416,8 @@ static RPCHelpMan deriveaddresses()
             },
             RPCExamples{
         "\nFirst three receive addresses\n"
-        + HelpExampleCli("deriveaddresses", "\"pkh([d34db33f/84h/0h/0h]xpub6DJ2dNUysrn5Vt36jH2KLBT2i1auw1tTSSomg8PhqNiUtx8QX2SvC9nrHu81fT41fvDUnhMjEzQgXnQjKEu3oaqMSzhSrHMxyyoEAmUHQbY/0/*)#cjjspncu\" \"[0,2]\"")
+        + HelpExampleCli("deriveaddresses", "\"" + EXAMPLE_DESCRIPTOR + "\" \"[0,2]\"") +
+          HelpExampleRpc("deriveaddresses", "\"" + EXAMPLE_DESCRIPTOR + "\", \"[0,2]\"")
             },
     [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
diff --git a/src/rpc/rawtransaction.cpp b/src/rpc/rawtransaction.cpp
index 208529414e..fca81b4c7e 100644
--- a/src/rpc/rawtransaction.cpp
+++ b/src/rpc/rawtransaction.cpp
@@ -867,16 +867,6 @@ static RPCHelpMan decoderawtransaction()
     };
 }
 
-static std::string GetAllOutputTypes()
-{
-    std::vector<std::string> ret;
-    using U = std::underlying_type<TxoutType>::type;
-    for (U i = (U)TxoutType::NONSTANDARD; i <= (U)TxoutType::NULL_DATA; ++i) {
-        ret.emplace_back(GetTxnOutputType(static_cast<TxoutType>(i)));
-    }
-    return Join(ret, ", ");
-}
-
 static RPCHelpMan decodescript()
 {
     return RPCHelpMan{"decodescript",
diff --git a/src/rpc/util.cpp b/src/rpc/util.cpp
index 40d570830d..ce0af11023 100644
--- a/src/rpc/util.cpp
+++ b/src/rpc/util.cpp
@@ -18,6 +18,16 @@
 const std::string UNIX_EPOCH_TIME = "UNIX epoch time";
 const std::string EXAMPLE_ADDRESS[2] = {"XunLY9Tf7Zsef8gMGL2fhWA9ZmMjt4KPw0", "XwQQkwA4FYkq2XERzMY2CiAZhJTEDAbtc0"};
 
+std::string GetAllOutputTypes()
+{
+    std::vector<std::string> ret;
+    using U = std::underlying_type<TxoutType>::type;
+    for (U i = (U)TxoutType::NONSTANDARD; i <= (U)TxoutType::NULL_DATA; ++i) {
+        ret.emplace_back(GetTxnOutputType(static_cast<TxoutType>(i)));
+    }
+    return Join(ret, ", ");
+}
+
 void RPCTypeCheck(const UniValue& params,
                   const std::list<UniValueType>& typesExpected,
                   bool fAllowNull)
diff --git a/src/rpc/util.h b/src/rpc/util.h
index b39c7acf8e..66edd95229 100644
--- a/src/rpc/util.h
+++ b/src/rpc/util.h
@@ -41,6 +41,13 @@ class CPubKey;
 class CScript;
 struct Sections;
 
+/**
+ * Gets all existing output types formatted for RPC help sections.
+ *
+ * @return Comma separated string representing output type names.
+ */
+std::string GetAllOutputTypes();
+
 /** Wrapper for UniValue::VType, which includes typeAny:
  * Used to denote don't care type. */
 struct UniValueType {
diff --git a/src/test/data/README.md b/src/test/data/README.md
index ee907dff53..cc4d41c75d 100644
--- a/src/test/data/README.md
+++ b/src/test/data/README.md
@@ -8,5 +8,5 @@ License
 
 The data files in this directory are distributed under the MIT software
 license, see the accompanying file COPYING or
-http://www.opensource.org/licenses/mit-license.php.
+https://www.opensource.org/licenses/mit-license.php.
 
diff --git a/test/functional/README.md b/test/functional/README.md
index be46730f9d..12da5d8d7a 100644
--- a/test/functional/README.md
+++ b/test/functional/README.md
@@ -190,5 +190,5 @@ perf report -i /path/to/datadir/send-big-msgs.perf.data.xxxx --stdio | c++filt |
 #### See also:
 
 - [Installing perf](https://askubuntu.com/q/50145)
-- [Perf examples](http://www.brendangregg.com/perf.html)
+- [Perf examples](https://www.brendangregg.com/perf.html)
 - [Hotspot](https://github.com/KDAB/hotspot): a GUI for perf output analysis
diff --git a/test/sanitizer_suppressions/ubsan b/test/sanitizer_suppressions/ubsan
index 46a5769b18..1d84b89904 100644
--- a/test/sanitizer_suppressions/ubsan
+++ b/test/sanitizer_suppressions/ubsan
@@ -21,7 +21,6 @@ unsigned-integer-overflow:addrman.cpp
 unsigned-integer-overflow:arith_uint256.h
 unsigned-integer-overflow:basic_string.h
 unsigned-integer-overflow:bench/bench.h
-unsigned-integer-overflow:bitcoin-tx.cpp
 unsigned-integer-overflow:bloom.cpp
 unsigned-integer-overflow:chain.cpp
 unsigned-integer-overflow:chain.h