Merge bitcoin/bitcoin#31864: doc: add missing copyright headers

c7c3bfadfc doc: add & amend copyright headers (fanquake)
f667000c83 contrib: remove outdated entries from copyright_header.py (fanquake)
0817f2d6cf doc: update MIT license URL (fanquake)
6854497b47 contrib: remove GPL-3+ from debian/copyright (fanquake)

Pull request description:

  Add & amends a number of copyright headers.
  Remove some now obselete doc/code.

ACKs for top commit:
  willcl-ark:
    ACK c7c3bfadfc

Tree-SHA512: 746ca4217e310f7f907fcd5d1e03d481b65045d57048b892a2c993be690898b6681fe6003b4f6a448b551c0ddcb32cad07998de208284a64cc4853fd4d63df52

README.md

@@ -19,7 +19,7 @@ License
 -------
 
 Bitcoin Core is released under the terms of the MIT license. See [COPYING](COPYING) for more
-information or see https://opensource.org/licenses/MIT.
+information or see https://opensource.org/license/MIT.
 
 Development Process
 -------------------

contrib/debian/copyright

@@ -121,17 +121,6 @@ Comment:
  You should have received a copy of the GNU General Public License along
  with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-License: GPL-3+
- Permission is granted to copy, distribute and/or modify this document
- under the terms of the GNU General Public License, Version 3 or any
- later version published by the Free Software Foundation.
-Comment:
- On Debian systems the GNU General Public License (GPL) version 3 is
- located in '/usr/share/common-licenses/GPL-3'.
- .
- You should have received a copy of the GNU General Public License along
- with this program.  If not, see <http://www.gnu.org/licenses/>.
-
 License: public-domain
  This work is in the public domain.
 

contrib/devtools/copyright_header.py

@@ -22,7 +22,6 @@ EXCLUDE = [
     'src/test/fuzz/FuzzedDataProvider.h',
     'src/tinyformat.h',
     'src/bench/nanobench.h',
-    'test/functional/test_framework/bignum.py',
     # python init:
     '*__init__.py',
 ]
@@ -94,7 +93,6 @@ EXPECTED_HOLDER_NAMES = [
     r"Satoshi Nakamoto",
     r"The Bitcoin Core developers",
     r"BitPay Inc\.",
-    r"University of Illinois at Urbana-Champaign\.",
     r"Pieter Wuille",
     r"Wladimir J\. van der Laan",
     r"Jeff Garzik",

src/clientversion.cpp

@@ -96,6 +96,6 @@ std::string LicenseInfo()
            "\n" +
            "\n" +
            _("This is experimental software.") + "\n" +
-           strprintf(_("Distributed under the MIT software license, see the accompanying file %s or %s"), "COPYING", "<https://opensource.org/licenses/MIT>").translated +
+           strprintf(_("Distributed under the MIT software license, see the accompanying file %s or %s"), "COPYING", "<https://opensource.org/license/MIT>").translated +
            "\n";
 }

src/node/peerman_args.cpp

@@ -1,3 +1,7 @@
+// Copyright (c) 2023-present The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://opensource.org/license/mit.
+
 #include <node/peerman_args.h>
 
 #include <common/args.h>

src/node/peerman_args.h

@@ -1,3 +1,7 @@
+// Copyright (c) 2023-present The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://opensource.org/license/mit.
+
 #ifndef BITCOIN_NODE_PEERMAN_ARGS_H
 #define BITCOIN_NODE_PEERMAN_ARGS_H
 

src/node/txdownloadman_impl.cpp

@@ -1,4 +1,4 @@
-// Copyright (c) 2024
+// Copyright (c) 2024-present The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 

src/node/txdownloadman_impl.h

@@ -1,4 +1,4 @@
-// Copyright (c) 2024
+// Copyright (c) 2024-present The Bitcoin Core developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 #ifndef BITCOIN_NODE_TXDOWNLOADMAN_IMPL_H

src/test/fuzz/headerssync.cpp

@@ -1,3 +1,7 @@
+// Copyright (c) 2022-present The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://opensource.org/license/mit.
+
 #include <arith_uint256.h>
 #include <chain.h>
 #include <chainparams.h>

src/test/fuzz/partially_downloaded_block.cpp

@@ -1,3 +1,7 @@
+// Copyright (c) 2023-present The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://opensource.org/license/mit.
+
 #include <blockencodings.h>
 #include <consensus/merkle.h>
 #include <consensus/validation.h>

src/univalue/include/univalue_escapes.h

@@ -1,3 +1,8 @@
+// Copyright 2014 BitPay Inc.
+// Copyright (c) 2022-present The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://opensource.org/license/mit.
+
 #ifndef BITCOIN_UNIVALUE_INCLUDE_UNIVALUE_ESCAPES_H
 #define BITCOIN_UNIVALUE_INCLUDE_UNIVALUE_ESCAPES_H
 static const char *escapes[256] = {

src/univalue/test/test_json.cpp

@@ -1,3 +1,8 @@
+// Copyright 2014 BitPay Inc.
+// Copyright (c) 2017-present The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://opensource.org/license/mit.
+
 // Test program that can be called by the JSON test suite at
 // https://github.com/nst/JSONTestSuite.
 //

src/util/transaction_identifier.h

@@ -1,3 +1,7 @@
+// Copyright (c) 2023-present The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or https://opensource.org/license/mit.
+
 #ifndef BITCOIN_UTIL_TRANSACTION_IDENTIFIER_H
 #define BITCOIN_UTIL_TRANSACTION_IDENTIFIER_H
 

test/lint/lint_ignore_dirs.py

@@ -1,3 +1,9 @@
+#!/usr/bin/env python3
+#
+# Copyright (c) 2024-present The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or https://opensource.org/license/mit.
+
 SHARED_EXCLUDED_SUBTREES = ["src/leveldb/",
                  "src/crc32c/",
                  "src/secp256k1/",