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buidl Bitcoin Library

Python

buidl is a python3 bitcoin library with 0 dependencies. It is easy-to-read, has extensive test coverage, simple to install on airgapped computers (just copy over this directory).

buidl has extensive feature support for the bitcoin blockchain:

  • Trust-minimized - easy-to-read cryptography implemented in straightforward/way with no third-party dependencies
  • Performant - optional secp256k1 library bindings offers a ~100x speedup, see performance section below
  • Wallet tools for various script types (p2pkh, p2sh, p2sh-wrapped-p2wsh, p2wsh and p2tr (coming soon) ), compressed/uncompressed pubkeys, address encodings, HD support (BIP32, BIP39, BIP44, seedpicker, etc), PSBT generation/decoding/validation, etc
  • Extensive multisig support/tooling for output descriptors, receive address validation, change address detection, fee verification, blinding xpubs, PSBTs, BCUR v0 (v1 coming soon), airgap signing, etc
  • SPV proofs and compact block filters (Neutrino) - build powerful trust-minimized apps without scanning the whole blockchain
  • P2P gossip network - connect directly to the bitcoin network
  • Footgun protection - from elegantly structured OOP classes to RFC6979 deterministic k-values, buidl is designed to be usable for non-cryptographers
  • 0 altcoins - for maximum readability/focus. The only other supported coins are bitcoin's testnet and signet, which intentionally have no value.

This repository comes with zero guarantees, use at your own risk.

Installation

Online

$ pip3 install buidl --upgrade

Offline

Download this repo and then run:

$ python3 setup.py install

(alternatively, because buidl has no dependencies you can just cd into this root directory and call buidl without installation)

Multiwallet

multiwallet is a stateless CLI multisig PSBT wallet. Since buidl has no dependencies, you can run multiwallet by just cding to the root directory of this project:

$ python3 multiwallet.py
Welcome to multiwallet...

If you have installed buidl, you can run multiwallet.py from any directory:

$ multiwallet.py
Welcome to multiwallet...

For more information on installing multiwallet, see multiwallet.md or check out this demo.

singlesweep.py works the same way for sweeping out of paper wallets, but is intentionally undocumented.

Tests

Run tests with pytest:

$ git clone https://github.com/buidl-bitcoin/buidl-python.git &&cd buidl-python
$ pytest -v

(these will be 1-2 orders of magnitue faster with libsec bindings, see performance section below)

Run black:

$ black . --diff --check

Run flake8:

$ flake8 .

Performance

You can speed this library up ~100x by using C-bindings to bitcoin core's libsecp256k1 library.

libsecp256k1 Dependency Installation

Easy (MacOS only)

Use brew to install libsecp256k1:

$ brew tap buidl-bitcoin/homebrew-libsecp256k1
$ brew install pkg-config libffi libsecp256k1

Hard (Linux/Mac)

Compile libsecp256k1 from scratch with experimental modules enabled to make Schnorr signatures work:

$ git clone https://github.com/bitcoin-core/secp256k1
$ cd secp256k1
$ ./autogen.sh
$ ./configure --enable-module-extrakeys --enable-module-schnorrsig --enable-experimental
$ make
$ sudo make install

buidl Installation

$ git clone git@github.com:buidl-bitcoin/buidl-python.git &&cd buidl-python && python3 -m pip install -r requirements-libsec.txt && python3 -m pip install --editable .&&cd buidl && python3 libsec_build.py &&cd .. && python3 -c "from buidl import *; print('success') if is_libsec_enabled() else print('LIBSEC INSTALL FAIL')"

About

python3 bitcoin library with no dependencies and extensive test coverage

pypi.org/project/buidl/

Resources

Readme
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1 star

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0 watching

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
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}
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})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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buidl Bitcoin Library
Python
buidl is a python3 bitcoin library with 0 dependencies.
It is easy-to-read, has extensive test coverage, simple to install on airgapped computers (just copy over this directory).
buidl has extensive feature support for the bitcoin blockchain:
  • Trust-minimized - easy-to-read cryptography implemented in straightforward/way with no third-party dependencies
  • Performant - optional secp256k1 library bindings offers a ~100x speedup, see performance section below
  • Wallet tools for various script types (p2pkh, p2sh, p2sh-wrapped-p2wsh, p2wsh and p2tr (coming soon) ), compressed/uncompressed pubkeys, address encodings, HD support (BIP32, BIP39, BIP44, seedpicker, etc), PSBT generation/decoding/validation, etc
  • Extensive multisig support/tooling for output descriptors, receive address validation, change address detection, fee verification, blinding xpubs, PSBTs, BCUR v0 (v1 coming soon), airgap signing, etc
  • SPV proofs and compact block filters (Neutrino) - build powerful trust-minimized apps without scanning the whole blockchain
  • P2P gossip network - connect directly to the bitcoin network
  • Footgun protection - from elegantly structured OOP classes to RFC6979 deterministic k-values, buidl is designed to be usable for non-cryptographers
  • 0 altcoins - for maximum readability/focus. The only other supported coins are bitcoin's testnet and signet, which intentionally have no value.
This repository comes with zero guarantees, use at your own risk.
Installation
Online
$ pip3 install buidl --upgrade
Offline
Download this repo and then run:
$ python3 setup.py install
(alternatively, because buidl has no dependencies you can just cd into this root directory and call buidl without installation)
Multiwallet
multiwallet is a stateless CLI multisig PSBT wallet.
Since buidl has no dependencies, you can run multiwallet by just cding to the root directory of this project:
$ python3 multiwallet.py
Welcome to multiwallet...
If you have installed buidl, you can run multiwallet.py from any directory:
$ multiwallet.py
Welcome to multiwallet...
For more information on installing multiwallet, see multiwallet.md or check out this demo.
singlesweep.py works the same way for sweeping out of paper wallets, but is intentionally undocumented.
Tests
Run tests with pytest:
$ git clone https://github.com/buidl-bitcoin/buidl-python.git &&cd buidl-python
$ pytest -v
(these will be 1-2 orders of magnitue faster with libsec bindings, see performance section below)
Run black:
$ black . --diff --check
Run flake8:
$ flake8 .
Performance
You can speed this library up ~100x by using C-bindings to bitcoin core's libsecp256k1 library.
libsecp256k1 Dependency Installation
Easy (MacOS only)
Use brew to install libsecp256k1:
$ brew tap buidl-bitcoin/homebrew-libsecp256k1
$ brew install pkg-config libffi libsecp256k1

Hard (Linux/Mac)
Compile libsecp256k1 from scratch with experimental modules enabled to make Schnorr signatures work:
$ git clone https://github.com/bitcoin-core/secp256k1
$ cd secp256k1
$ ./autogen.sh
$ ./configure --enable-module-extrakeys --enable-module-schnorrsig --enable-experimental
$ make
$ sudo make install
buidl Installation
$ git clone git@github.com:buidl-bitcoin/buidl-python.git &&cd buidl-python && python3 -m pip install -r requirements-libsec.txt && python3 -m pip install --editable .&&cd buidl && python3 libsec_build.py &&cd .. && python3 -c "from buidl import *; print('success') if is_libsec_enabled() else print('LIBSEC INSTALL FAIL')"
About
python3 bitcoin library with no dependencies and extensive test coverage
pypi.org/project/buidl/
Resources
Readme
License
Activity
Custom properties
Stars
1 star
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
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Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
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buidl Bitcoin Library
Python
buidl is a python3 bitcoin library with 0 dependencies.
It is easy-to-read, has extensive test coverage, simple to install on airgapped computers (just copy over this directory).
buidl has extensive feature support for the bitcoin blockchain:
  • Trust-minimized - easy-to-read cryptography implemented in straightforward/way with no third-party dependencies
  • Performant - optional secp256k1 library bindings offers a ~100x speedup, see performance section below
  • Wallet tools for various script types (p2pkh, p2sh, p2sh-wrapped-p2wsh, p2wsh and p2tr (coming soon) ), compressed/uncompressed pubkeys, address encodings, HD support (BIP32, BIP39, BIP44, seedpicker, etc), PSBT generation/decoding/validation, etc
  • Extensive multisig support/tooling for output descriptors, receive address validation, change address detection, fee verification, blinding xpubs, PSBTs, BCUR v0 (v1 coming soon), airgap signing, etc
  • SPV proofs and compact block filters (Neutrino) - build powerful trust-minimized apps without scanning the whole blockchain
  • P2P gossip network - connect directly to the bitcoin network
  • Footgun protection - from elegantly structured OOP classes to RFC6979 deterministic k-values, buidl is designed to be usable for non-cryptographers
  • 0 altcoins - for maximum readability/focus. The only other supported coins are bitcoin's testnet and signet, which intentionally have no value.
This repository comes with zero guarantees, use at your own risk.
Installation
Online
$ pip3 install buidl --upgrade
Offline
Download this repo and then run:
$ python3 setup.py install
(alternatively, because buidl has no dependencies you can just cd into this root directory and call buidl without installation)
Multiwallet
multiwallet is a stateless CLI multisig PSBT wallet.
Since buidl has no dependencies, you can run multiwallet by just cding to the root directory of this project:
$ python3 multiwallet.py
Welcome to multiwallet...
If you have installed buidl, you can run multiwallet.py from any directory:
$ multiwallet.py
Welcome to multiwallet...
For more information on installing multiwallet, see multiwallet.md or check out this demo.
singlesweep.py works the same way for sweeping out of paper wallets, but is intentionally undocumented.
Tests
Run tests with pytest:
$ git clone https://github.com/buidl-bitcoin/buidl-python.git &&cd buidl-python
$ pytest -v
(these will be 1-2 orders of magnitue faster with libsec bindings, see performance section below)
Run black:
$ black . --diff --check
Run flake8:
$ flake8 .
Performance
You can speed this library up ~100x by using C-bindings to bitcoin core's libsecp256k1 library.
libsecp256k1 Dependency Installation
Easy (MacOS only)
Use brew to install libsecp256k1:
$ brew tap buidl-bitcoin/homebrew-libsecp256k1
$ brew install pkg-config libffi libsecp256k1

Hard (Linux/Mac)
Compile libsecp256k1 from scratch with experimental modules enabled to make Schnorr signatures work:
$ git clone https://github.com/bitcoin-core/secp256k1
$ cd secp256k1
$ ./autogen.sh
$ ./configure --enable-module-extrakeys --enable-module-schnorrsig --enable-experimental
$ make
$ sudo make install
buidl Installation
$ git clone git@github.com:buidl-bitcoin/buidl-python.git &&cd buidl-python && python3 -m pip install -r requirements-libsec.txt && python3 -m pip install --editable .&&cd buidl && python3 libsec_build.py &&cd .. && python3 -c "from buidl import *; print('success') if is_libsec_enabled() else print('LIBSEC INSTALL FAIL')"
About
python3 bitcoin library with no dependencies and extensive test coverage
pypi.org/project/buidl/
Resources
Readme
License
Activity
Custom properties
Stars
1 star
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
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buidl Bitcoin Library
Python
buidl is a python3 bitcoin library with 0 dependencies.
It is easy-to-read, has extensive test coverage, simple to install on airgapped computers (just copy over this directory).
buidl has extensive feature support for the bitcoin blockchain:
  • Trust-minimized - easy-to-read cryptography implemented in straightforward/way with no third-party dependencies
  • Performant - optional secp256k1 library bindings offers a ~100x speedup, see performance section below
  • Wallet tools for various script types (p2pkh, p2sh, p2sh-wrapped-p2wsh, p2wsh and p2tr (coming soon) ), compressed/uncompressed pubkeys, address encodings, HD support (BIP32, BIP39, BIP44, seedpicker, etc), PSBT generation/decoding/validation, etc
  • Extensive multisig support/tooling for output descriptors, receive address validation, change address detection, fee verification, blinding xpubs, PSBTs, BCUR v0 (v1 coming soon), airgap signing, etc
  • SPV proofs and compact block filters (Neutrino) - build powerful trust-minimized apps without scanning the whole blockchain
  • P2P gossip network - connect directly to the bitcoin network
  • Footgun protection - from elegantly structured OOP classes to RFC6979 deterministic k-values, buidl is designed to be usable for non-cryptographers
  • 0 altcoins - for maximum readability/focus. The only other supported coins are bitcoin's testnet and signet, which intentionally have no value.
This repository comes with zero guarantees, use at your own risk.
Installation
Online
$ pip3 install buidl --upgrade
Offline
Download this repo and then run:
$ python3 setup.py install
(alternatively, because buidl has no dependencies you can just cd into this root directory and call buidl without installation)
Multiwallet
multiwallet is a stateless CLI multisig PSBT wallet.
Since buidl has no dependencies, you can run multiwallet by just cding to the root directory of this project:
$ python3 multiwallet.py
Welcome to multiwallet...
If you have installed buidl, you can run multiwallet.py from any directory:
$ multiwallet.py
Welcome to multiwallet...
For more information on installing multiwallet, see multiwallet.md or check out this demo.
singlesweep.py works the same way for sweeping out of paper wallets, but is intentionally undocumented.
Tests
Run tests with pytest:
$ git clone https://github.com/buidl-bitcoin/buidl-python.git &&cd buidl-python
$ pytest -v
(these will be 1-2 orders of magnitue faster with libsec bindings, see performance section below)
Run black:
$ black . --diff --check
Run flake8:
$ flake8 .
Performance
You can speed this library up ~100x by using C-bindings to bitcoin core's libsecp256k1 library.
libsecp256k1 Dependency Installation
Easy (MacOS only)
Use brew to install libsecp256k1:
$ brew tap buidl-bitcoin/homebrew-libsecp256k1
$ brew install pkg-config libffi libsecp256k1

Hard (Linux/Mac)
Compile libsecp256k1 from scratch with experimental modules enabled to make Schnorr signatures work:
$ git clone https://github.com/bitcoin-core/secp256k1
$ cd secp256k1
$ ./autogen.sh
$ ./configure --enable-module-extrakeys --enable-module-schnorrsig --enable-experimental
$ make
$ sudo make install
buidl Installation
$ git clone git@github.com:buidl-bitcoin/buidl-python.git &&cd buidl-python && python3 -m pip install -r requirements-libsec.txt && python3 -m pip install --editable .&&cd buidl && python3 libsec_build.py &&cd .. && python3 -c "from buidl import *; print('success') if is_libsec_enabled() else print('LIBSEC INSTALL FAIL')"
About
python3 bitcoin library with no dependencies and extensive test coverage
pypi.org/project/buidl/
Resources
Readme
License
Activity
Custom properties
Stars
1 star
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
Repository files navigation
buidl Bitcoin Library
Python
buidl is a python3 bitcoin library with 0 dependencies.
It is easy-to-read, has extensive test coverage, simple to install on airgapped computers (just copy over this directory).
buidl has extensive feature support for the bitcoin blockchain:
  • Trust-minimized - easy-to-read cryptography implemented in straightforward/way with no third-party dependencies
  • Performant - optional secp256k1 library bindings offers a ~100x speedup, see performance section below
  • Wallet tools for various script types (p2pkh, p2sh, p2sh-wrapped-p2wsh, p2wsh and p2tr (coming soon) ), compressed/uncompressed pubkeys, address encodings, HD support (BIP32, BIP39, BIP44, seedpicker, etc), PSBT generation/decoding/validation, etc
  • Extensive multisig support/tooling for output descriptors, receive address validation, change address detection, fee verification, blinding xpubs, PSBTs, BCUR v0 (v1 coming soon), airgap signing, etc
  • SPV proofs and compact block filters (Neutrino) - build powerful trust-minimized apps without scanning the whole blockchain
  • P2P gossip network - connect directly to the bitcoin network
  • Footgun protection - from elegantly structured OOP classes to RFC6979 deterministic k-values, buidl is designed to be usable for non-cryptographers
  • 0 altcoins - for maximum readability/focus. The only other supported coins are bitcoin's testnet and signet, which intentionally have no value.
This repository comes with zero guarantees, use at your own risk.
Installation
Online
$ pip3 install buidl --upgrade
Offline
Download this repo and then run:
$ python3 setup.py install
(alternatively, because buidl has no dependencies you can just cd into this root directory and call buidl without installation)
Multiwallet
multiwallet is a stateless CLI multisig PSBT wallet.
Since buidl has no dependencies, you can run multiwallet by just cding to the root directory of this project:
$ python3 multiwallet.py
Welcome to multiwallet...
If you have installed buidl, you can run multiwallet.py from any directory:
$ multiwallet.py
Welcome to multiwallet...
For more information on installing multiwallet, see multiwallet.md or check out this demo.
singlesweep.py works the same way for sweeping out of paper wallets, but is intentionally undocumented.
Tests
Run tests with pytest:
$ git clone https://github.com/buidl-bitcoin/buidl-python.git &&cd buidl-python
$ pytest -v
(these will be 1-2 orders of magnitue faster with libsec bindings, see performance section below)
Run black:
$ black . --diff --check
Run flake8:
$ flake8 .
Performance
You can speed this library up ~100x by using C-bindings to bitcoin core's libsecp256k1 library.
libsecp256k1 Dependency Installation
Easy (MacOS only)
Use brew to install libsecp256k1:
$ brew tap buidl-bitcoin/homebrew-libsecp256k1
$ brew install pkg-config libffi libsecp256k1

Hard (Linux/Mac)
Compile libsecp256k1 from scratch with experimental modules enabled to make Schnorr signatures work:
$ git clone https://github.com/bitcoin-core/secp256k1
$ cd secp256k1
$ ./autogen.sh
$ ./configure --enable-module-extrakeys --enable-module-schnorrsig --enable-experimental
$ make
$ sudo make install
buidl Installation
$ git clone git@github.com:buidl-bitcoin/buidl-python.git &&cd buidl-python && python3 -m pip install -r requirements-libsec.txt && python3 -m pip install --editable .&&cd buidl && python3 libsec_build.py &&cd .. && python3 -c "from buidl import *; print('success') if is_libsec_enabled() else print('LIBSEC INSTALL FAIL')"
About
python3 bitcoin library with no dependencies and extensive test coverage
pypi.org/project/buidl/
Resources
Readme
License
Activity
Custom properties
Stars
1 star
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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buidl Bitcoin Library
Python
buidl is a python3 bitcoin library with 0 dependencies.
It is easy-to-read, has extensive test coverage, simple to install on airgapped computers (just copy over this directory).
buidl has extensive feature support for the bitcoin blockchain:
  • Trust-minimized - easy-to-read cryptography implemented in straightforward/way with no third-party dependencies
  • Performant - optional secp256k1 library bindings offers a ~100x speedup, see performance section below
  • Wallet tools for various script types (p2pkh, p2sh, p2sh-wrapped-p2wsh, p2wsh and p2tr (coming soon) ), compressed/uncompressed pubkeys, address encodings, HD support (BIP32, BIP39, BIP44, seedpicker, etc), PSBT generation/decoding/validation, etc
  • Extensive multisig support/tooling for output descriptors, receive address validation, change address detection, fee verification, blinding xpubs, PSBTs, BCUR v0 (v1 coming soon), airgap signing, etc
  • SPV proofs and compact block filters (Neutrino) - build powerful trust-minimized apps without scanning the whole blockchain
  • P2P gossip network - connect directly to the bitcoin network
  • Footgun protection - from elegantly structured OOP classes to RFC6979 deterministic k-values, buidl is designed to be usable for non-cryptographers
  • 0 altcoins - for maximum readability/focus. The only other supported coins are bitcoin's testnet and signet, which intentionally have no value.
This repository comes with zero guarantees, use at your own risk.
Installation
Online
$ pip3 install buidl --upgrade
Offline
Download this repo and then run:
$ python3 setup.py install
(alternatively, because buidl has no dependencies you can just cd into this root directory and call buidl without installation)
Multiwallet
multiwallet is a stateless CLI multisig PSBT wallet.
Since buidl has no dependencies, you can run multiwallet by just cding to the root directory of this project:
$ python3 multiwallet.py
Welcome to multiwallet...
If you have installed buidl, you can run multiwallet.py from any directory:
$ multiwallet.py
Welcome to multiwallet...
For more information on installing multiwallet, see multiwallet.md or check out this demo.
singlesweep.py works the same way for sweeping out of paper wallets, but is intentionally undocumented.
Tests
Run tests with pytest:
$ git clone https://github.com/buidl-bitcoin/buidl-python.git &&cd buidl-python
$ pytest -v
(these will be 1-2 orders of magnitue faster with libsec bindings, see performance section below)
Run black:
$ black . --diff --check
Run flake8:
$ flake8 .
Performance
You can speed this library up ~100x by using C-bindings to bitcoin core's libsecp256k1 library.
libsecp256k1 Dependency Installation
Easy (MacOS only)
Use brew to install libsecp256k1:
$ brew tap buidl-bitcoin/homebrew-libsecp256k1
$ brew install pkg-config libffi libsecp256k1

Hard (Linux/Mac)
Compile libsecp256k1 from scratch with experimental modules enabled to make Schnorr signatures work:
$ git clone https://github.com/bitcoin-core/secp256k1
$ cd secp256k1
$ ./autogen.sh
$ ./configure --enable-module-extrakeys --enable-module-schnorrsig --enable-experimental
$ make
$ sudo make install
buidl Installation
$ git clone git@github.com:buidl-bitcoin/buidl-python.git &&cd buidl-python && python3 -m pip install -r requirements-libsec.txt && python3 -m pip install --editable .&&cd buidl && python3 libsec_build.py &&cd .. && python3 -c "from buidl import *; print('success') if is_libsec_enabled() else print('LIBSEC INSTALL FAIL')"
About
python3 bitcoin library with no dependencies and extensive test coverage
pypi.org/project/buidl/
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Readme
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
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})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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buidl Bitcoin Library
Python
buidl is a python3 bitcoin library with 0 dependencies.
It is easy-to-read, has extensive test coverage, simple to install on airgapped computers (just copy over this directory).
buidl has extensive feature support for the bitcoin blockchain:
  • Trust-minimized - easy-to-read cryptography implemented in straightforward/way with no third-party dependencies
  • Performant - optional secp256k1 library bindings offers a ~100x speedup, see performance section below
  • Wallet tools for various script types (p2pkh, p2sh, p2sh-wrapped-p2wsh, p2wsh and p2tr (coming soon) ), compressed/uncompressed pubkeys, address encodings, HD support (BIP32, BIP39, BIP44, seedpicker, etc), PSBT generation/decoding/validation, etc
  • Extensive multisig support/tooling for output descriptors, receive address validation, change address detection, fee verification, blinding xpubs, PSBTs, BCUR v0 (v1 coming soon), airgap signing, etc
  • SPV proofs and compact block filters (Neutrino) - build powerful trust-minimized apps without scanning the whole blockchain
  • P2P gossip network - connect directly to the bitcoin network
  • Footgun protection - from elegantly structured OOP classes to RFC6979 deterministic k-values, buidl is designed to be usable for non-cryptographers
  • 0 altcoins - for maximum readability/focus. The only other supported coins are bitcoin's testnet and signet, which intentionally have no value.
This repository comes with zero guarantees, use at your own risk.
Installation
Online
$ pip3 install buidl --upgrade
Offline
Download this repo and then run:
$ python3 setup.py install
(alternatively, because buidl has no dependencies you can just cd into this root directory and call buidl without installation)
Multiwallet
multiwallet is a stateless CLI multisig PSBT wallet.
Since buidl has no dependencies, you can run multiwallet by just cding to the root directory of this project:
$ python3 multiwallet.py
Welcome to multiwallet...
If you have installed buidl, you can run multiwallet.py from any directory:
$ multiwallet.py
Welcome to multiwallet...
For more information on installing multiwallet, see multiwallet.md or check out this demo.
singlesweep.py works the same way for sweeping out of paper wallets, but is intentionally undocumented.
Tests
Run tests with pytest:
$ git clone https://github.com/buidl-bitcoin/buidl-python.git &&cd buidl-python
$ pytest -v
(these will be 1-2 orders of magnitue faster with libsec bindings, see performance section below)
Run black:
$ black . --diff --check
Run flake8:
$ flake8 .
Performance
You can speed this library up ~100x by using C-bindings to bitcoin core's libsecp256k1 library.
libsecp256k1 Dependency Installation
Easy (MacOS only)
Use brew to install libsecp256k1:
$ brew tap buidl-bitcoin/homebrew-libsecp256k1
$ brew install pkg-config libffi libsecp256k1

Hard (Linux/Mac)
Compile libsecp256k1 from scratch with experimental modules enabled to make Schnorr signatures work:
$ git clone https://github.com/bitcoin-core/secp256k1
$ cd secp256k1
$ ./autogen.sh
$ ./configure --enable-module-extrakeys --enable-module-schnorrsig --enable-experimental
$ make
$ sudo make install
buidl Installation
$ git clone git@github.com:buidl-bitcoin/buidl-python.git &&cd buidl-python && python3 -m pip install -r requirements-libsec.txt && python3 -m pip install --editable .&&cd buidl && python3 libsec_build.py &&cd .. && python3 -c "from buidl import *; print('success') if is_libsec_enabled() else print('LIBSEC INSTALL FAIL')"
About
python3 bitcoin library with no dependencies and extensive test coverage
pypi.org/project/buidl/
Resources
Readme
License
Activity
Custom properties
Stars
1 star
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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buidl Bitcoin Library
Python
buidl is a python3 bitcoin library with 0 dependencies.
It is easy-to-read, has extensive test coverage, simple to install on airgapped computers (just copy over this directory).
buidl has extensive feature support for the bitcoin blockchain:
  • Trust-minimized - easy-to-read cryptography implemented in straightforward/way with no third-party dependencies
  • Performant - optional secp256k1 library bindings offers a ~100x speedup, see performance section below
  • Wallet tools for various script types (p2pkh, p2sh, p2sh-wrapped-p2wsh, p2wsh and p2tr (coming soon) ), compressed/uncompressed pubkeys, address encodings, HD support (BIP32, BIP39, BIP44, seedpicker, etc), PSBT generation/decoding/validation, etc
  • Extensive multisig support/tooling for output descriptors, receive address validation, change address detection, fee verification, blinding xpubs, PSBTs, BCUR v0 (v1 coming soon), airgap signing, etc
  • SPV proofs and compact block filters (Neutrino) - build powerful trust-minimized apps without scanning the whole blockchain
  • P2P gossip network - connect directly to the bitcoin network
  • Footgun protection - from elegantly structured OOP classes to RFC6979 deterministic k-values, buidl is designed to be usable for non-cryptographers
  • 0 altcoins - for maximum readability/focus. The only other supported coins are bitcoin's testnet and signet, which intentionally have no value.
This repository comes with zero guarantees, use at your own risk.
Installation
Online
$ pip3 install buidl --upgrade
Offline
Download this repo and then run:
$ python3 setup.py install
(alternatively, because buidl has no dependencies you can just cd into this root directory and call buidl without installation)
Multiwallet
multiwallet is a stateless CLI multisig PSBT wallet.
Since buidl has no dependencies, you can run multiwallet by just cding to the root directory of this project:
$ python3 multiwallet.py
Welcome to multiwallet...
If you have installed buidl, you can run multiwallet.py from any directory:
$ multiwallet.py
Welcome to multiwallet...
For more information on installing multiwallet, see multiwallet.md or check out this demo.
singlesweep.py works the same way for sweeping out of paper wallets, but is intentionally undocumented.
Tests
Run tests with pytest:
$ git clone https://github.com/buidl-bitcoin/buidl-python.git &&cd buidl-python
$ pytest -v
(these will be 1-2 orders of magnitue faster with libsec bindings, see performance section below)
Run black:
$ black . --diff --check
Run flake8:
$ flake8 .
Performance
You can speed this library up ~100x by using C-bindings to bitcoin core's libsecp256k1 library.
libsecp256k1 Dependency Installation
Easy (MacOS only)
Use brew to install libsecp256k1:
$ brew tap buidl-bitcoin/homebrew-libsecp256k1
$ brew install pkg-config libffi libsecp256k1

Hard (Linux/Mac)
Compile libsecp256k1 from scratch with experimental modules enabled to make Schnorr signatures work:
$ git clone https://github.com/bitcoin-core/secp256k1
$ cd secp256k1
$ ./autogen.sh
$ ./configure --enable-module-extrakeys --enable-module-schnorrsig --enable-experimental
$ make
$ sudo make install
buidl Installation
$ git clone git@github.com:buidl-bitcoin/buidl-python.git &&cd buidl-python && python3 -m pip install -r requirements-libsec.txt && python3 -m pip install --editable .&&cd buidl && python3 libsec_build.py &&cd .. && python3 -c "from buidl import *; print('success') if is_libsec_enabled() else print('LIBSEC INSTALL FAIL')"
About
python3 bitcoin library with no dependencies and extensive test coverage
pypi.org/project/buidl/
Resources
Readme
License
Activity
Custom properties
Stars
1 star
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages