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LDK Node

A ready-to-go Lightning node library built using LDK and BDK.

LDK Node is a non-custodial Lightning node in library form. Its central goal is to provide a small, simple, and straightforward interface that enables users to easily set up and run a Lightning node with an integrated on-chain wallet. While minimalism is at its core, LDK Node aims to be sufficiently modular and configurable to be useful for a variety of use cases.

Getting Started

The primary abstraction of the library is the Node, which can be retrieved by setting up and configuring a Builder to your liking and calling build(). Node can then be controlled via commands such as start, stop, connect_open_channel, send_payment, etc.:

use ldk_node::Builder;use ldk_node::lightning_invoice::Invoice;use std::str::FromStr;fnmain(){let node = Builder::new().set_network("testnet").set_esplora_server_url("https://blockstream.info/testnet/api".to_string()).build();
node.start().unwrap();let _funding_address = node.new_funding_address();// .. fund address ..
node.sync_wallets().unwrap();
node.connect_open_channel("NODE_ID@PEER_ADDR:PORT",10000,false).unwrap();let invoice = Invoice::from_str("INVOICE_STR").unwrap();
node.send_payment(invoice).unwrap();
node.stop().unwrap();}

Modularity

LDK Node currently comes with a decidedly opionated set of design choices:

  • On-chain data is handled by the integrated BDK wallet
  • Chain data is accessed via Esplora (support for Electrum and bitcoind RPC will follow)
  • Wallet and channel state is persisted to file system (support for SQLite will follow)
  • Gossip data is sourced via Lightnings peer-to-peer network (support for Rapid Gossip Sync will follow)
  • Entropy for the Lightning and on-chain wallets may be generated and persisted for or provided by the user (support for BIP39 mnemonics will follow)

Language Support

LDK Node is written in Rust and may therefore be natively included in any std Rust program. Beyond its Rust API it also offers language bindings for Swift, Kotlin, and Python based on UniFFI.

About

A ready-to-go node implementation built using LDK.

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
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}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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LDK Node
A ready-to-go Lightning node library built using LDK and BDK.
LDK Node is a non-custodial Lightning node in library form. Its central goal is to provide a small, simple, and straightforward interface that enables users to easily set up and run a Lightning node with an integrated on-chain wallet. While minimalism is at its core, LDK Node aims to be sufficiently modular and configurable to be useful for a variety of use cases.
Getting Started
The primary abstraction of the library is the Node, which can be retrieved by setting up and configuring a Builder to your liking and calling build(). Node can then be controlled via commands such as start, stop, connect_open_channel, send_payment, etc.:
use ldk_node::Builder;use ldk_node::lightning_invoice::Invoice;use std::str::FromStr;fnmain(){let node = Builder::new().set_network("testnet").set_esplora_server_url("https://blockstream.info/testnet/api".to_string()).build();
node.start().unwrap();let _funding_address = node.new_funding_address();// .. fund address ..
node.sync_wallets().unwrap();
node.connect_open_channel("NODE_ID@PEER_ADDR:PORT",10000,false).unwrap();let invoice = Invoice::from_str("INVOICE_STR").unwrap();
node.send_payment(invoice).unwrap();
node.stop().unwrap();}
Modularity
LDK Node currently comes with a decidedly opionated set of design choices:
  • On-chain data is handled by the integrated BDK wallet
  • Chain data is accessed via Esplora (support for Electrum and bitcoind RPC will follow)
  • Wallet and channel state is persisted to file system (support for SQLite will follow)
  • Gossip data is sourced via Lightnings peer-to-peer network (support for Rapid Gossip Sync will follow)
  • Entropy for the Lightning and on-chain wallets may be generated and persisted for or provided by the user (support for BIP39 mnemonics will follow)
Language Support
LDK Node is written in Rust and may therefore be natively included in any std Rust program. Beyond its Rust API it also offers language bindings for Swift, Kotlin, and Python based on UniFFI.
About
A ready-to-go node implementation built using LDK.
Resources
Readme
License
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
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('^' + ".*" + '

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LDK Node
A ready-to-go Lightning node library built using LDK and BDK.
LDK Node is a non-custodial Lightning node in library form. Its central goal is to provide a small, simple, and straightforward interface that enables users to easily set up and run a Lightning node with an integrated on-chain wallet. While minimalism is at its core, LDK Node aims to be sufficiently modular and configurable to be useful for a variety of use cases.
Getting Started
The primary abstraction of the library is the Node, which can be retrieved by setting up and configuring a Builder to your liking and calling build(). Node can then be controlled via commands such as start, stop, connect_open_channel, send_payment, etc.:
use ldk_node::Builder;use ldk_node::lightning_invoice::Invoice;use std::str::FromStr;fnmain(){let node = Builder::new().set_network("testnet").set_esplora_server_url("https://blockstream.info/testnet/api".to_string()).build();
node.start().unwrap();let _funding_address = node.new_funding_address();// .. fund address ..
node.sync_wallets().unwrap();
node.connect_open_channel("NODE_ID@PEER_ADDR:PORT",10000,false).unwrap();let invoice = Invoice::from_str("INVOICE_STR").unwrap();
node.send_payment(invoice).unwrap();
node.stop().unwrap();}
Modularity
LDK Node currently comes with a decidedly opionated set of design choices:
  • On-chain data is handled by the integrated BDK wallet
  • Chain data is accessed via Esplora (support for Electrum and bitcoind RPC will follow)
  • Wallet and channel state is persisted to file system (support for SQLite will follow)
  • Gossip data is sourced via Lightnings peer-to-peer network (support for Rapid Gossip Sync will follow)
  • Entropy for the Lightning and on-chain wallets may be generated and persisted for or provided by the user (support for BIP39 mnemonics will follow)
Language Support
LDK Node is written in Rust and may therefore be natively included in any std Rust program. Beyond its Rust API it also offers language bindings for Swift, Kotlin, and Python based on UniFFI.
About
A ready-to-go node implementation built using LDK.
Resources
Readme
License
Activity
Stars
0 stars
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
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LDK Node
A ready-to-go Lightning node library built using LDK and BDK.
LDK Node is a non-custodial Lightning node in library form. Its central goal is to provide a small, simple, and straightforward interface that enables users to easily set up and run a Lightning node with an integrated on-chain wallet. While minimalism is at its core, LDK Node aims to be sufficiently modular and configurable to be useful for a variety of use cases.
Getting Started
The primary abstraction of the library is the Node, which can be retrieved by setting up and configuring a Builder to your liking and calling build(). Node can then be controlled via commands such as start, stop, connect_open_channel, send_payment, etc.:
use ldk_node::Builder;use ldk_node::lightning_invoice::Invoice;use std::str::FromStr;fnmain(){let node = Builder::new().set_network("testnet").set_esplora_server_url("https://blockstream.info/testnet/api".to_string()).build();
node.start().unwrap();let _funding_address = node.new_funding_address();// .. fund address ..
node.sync_wallets().unwrap();
node.connect_open_channel("NODE_ID@PEER_ADDR:PORT",10000,false).unwrap();let invoice = Invoice::from_str("INVOICE_STR").unwrap();
node.send_payment(invoice).unwrap();
node.stop().unwrap();}
Modularity
LDK Node currently comes with a decidedly opionated set of design choices:
  • On-chain data is handled by the integrated BDK wallet
  • Chain data is accessed via Esplora (support for Electrum and bitcoind RPC will follow)
  • Wallet and channel state is persisted to file system (support for SQLite will follow)
  • Gossip data is sourced via Lightnings peer-to-peer network (support for Rapid Gossip Sync will follow)
  • Entropy for the Lightning and on-chain wallets may be generated and persisted for or provided by the user (support for BIP39 mnemonics will follow)
Language Support
LDK Node is written in Rust and may therefore be natively included in any std Rust program. Beyond its Rust API it also offers language bindings for Swift, Kotlin, and Python based on UniFFI.
About
A ready-to-go node implementation built using LDK.
Resources
Readme
License
Activity
Stars
0 stars
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
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LDK Node
A ready-to-go Lightning node library built using LDK and BDK.
LDK Node is a non-custodial Lightning node in library form. Its central goal is to provide a small, simple, and straightforward interface that enables users to easily set up and run a Lightning node with an integrated on-chain wallet. While minimalism is at its core, LDK Node aims to be sufficiently modular and configurable to be useful for a variety of use cases.
Getting Started
The primary abstraction of the library is the Node, which can be retrieved by setting up and configuring a Builder to your liking and calling build(). Node can then be controlled via commands such as start, stop, connect_open_channel, send_payment, etc.:
use ldk_node::Builder;use ldk_node::lightning_invoice::Invoice;use std::str::FromStr;fnmain(){let node = Builder::new().set_network("testnet").set_esplora_server_url("https://blockstream.info/testnet/api".to_string()).build();
node.start().unwrap();let _funding_address = node.new_funding_address();// .. fund address ..
node.sync_wallets().unwrap();
node.connect_open_channel("NODE_ID@PEER_ADDR:PORT",10000,false).unwrap();let invoice = Invoice::from_str("INVOICE_STR").unwrap();
node.send_payment(invoice).unwrap();
node.stop().unwrap();}
Modularity
LDK Node currently comes with a decidedly opionated set of design choices:
  • On-chain data is handled by the integrated BDK wallet
  • Chain data is accessed via Esplora (support for Electrum and bitcoind RPC will follow)
  • Wallet and channel state is persisted to file system (support for SQLite will follow)
  • Gossip data is sourced via Lightnings peer-to-peer network (support for Rapid Gossip Sync will follow)
  • Entropy for the Lightning and on-chain wallets may be generated and persisted for or provided by the user (support for BIP39 mnemonics will follow)
Language Support
LDK Node is written in Rust and may therefore be natively included in any std Rust program. Beyond its Rust API it also offers language bindings for Swift, Kotlin, and Python based on UniFFI.
About
A ready-to-go node implementation built using LDK.
Resources
Readme
License
Activity
Stars
0 stars
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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LDK Node
A ready-to-go Lightning node library built using LDK and BDK.
LDK Node is a non-custodial Lightning node in library form. Its central goal is to provide a small, simple, and straightforward interface that enables users to easily set up and run a Lightning node with an integrated on-chain wallet. While minimalism is at its core, LDK Node aims to be sufficiently modular and configurable to be useful for a variety of use cases.
Getting Started
The primary abstraction of the library is the Node, which can be retrieved by setting up and configuring a Builder to your liking and calling build(). Node can then be controlled via commands such as start, stop, connect_open_channel, send_payment, etc.:
use ldk_node::Builder;use ldk_node::lightning_invoice::Invoice;use std::str::FromStr;fnmain(){let node = Builder::new().set_network("testnet").set_esplora_server_url("https://blockstream.info/testnet/api".to_string()).build();
node.start().unwrap();let _funding_address = node.new_funding_address();// .. fund address ..
node.sync_wallets().unwrap();
node.connect_open_channel("NODE_ID@PEER_ADDR:PORT",10000,false).unwrap();let invoice = Invoice::from_str("INVOICE_STR").unwrap();
node.send_payment(invoice).unwrap();
node.stop().unwrap();}
Modularity
LDK Node currently comes with a decidedly opionated set of design choices:
  • On-chain data is handled by the integrated BDK wallet
  • Chain data is accessed via Esplora (support for Electrum and bitcoind RPC will follow)
  • Wallet and channel state is persisted to file system (support for SQLite will follow)
  • Gossip data is sourced via Lightnings peer-to-peer network (support for Rapid Gossip Sync will follow)
  • Entropy for the Lightning and on-chain wallets may be generated and persisted for or provided by the user (support for BIP39 mnemonics will follow)
Language Support
LDK Node is written in Rust and may therefore be natively included in any std Rust program. Beyond its Rust API it also offers language bindings for Swift, Kotlin, and Python based on UniFFI.
About
A ready-to-go node implementation built using LDK.
Resources
Readme
License
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, '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");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
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LDK Node
A ready-to-go Lightning node library built using LDK and BDK.
LDK Node is a non-custodial Lightning node in library form. Its central goal is to provide a small, simple, and straightforward interface that enables users to easily set up and run a Lightning node with an integrated on-chain wallet. While minimalism is at its core, LDK Node aims to be sufficiently modular and configurable to be useful for a variety of use cases.
Getting Started
The primary abstraction of the library is the Node, which can be retrieved by setting up and configuring a Builder to your liking and calling build(). Node can then be controlled via commands such as start, stop, connect_open_channel, send_payment, etc.:
use ldk_node::Builder;use ldk_node::lightning_invoice::Invoice;use std::str::FromStr;fnmain(){let node = Builder::new().set_network("testnet").set_esplora_server_url("https://blockstream.info/testnet/api".to_string()).build();
node.start().unwrap();let _funding_address = node.new_funding_address();// .. fund address ..
node.sync_wallets().unwrap();
node.connect_open_channel("NODE_ID@PEER_ADDR:PORT",10000,false).unwrap();let invoice = Invoice::from_str("INVOICE_STR").unwrap();
node.send_payment(invoice).unwrap();
node.stop().unwrap();}
Modularity
LDK Node currently comes with a decidedly opionated set of design choices:
  • On-chain data is handled by the integrated BDK wallet
  • Chain data is accessed via Esplora (support for Electrum and bitcoind RPC will follow)
  • Wallet and channel state is persisted to file system (support for SQLite will follow)
  • Gossip data is sourced via Lightnings peer-to-peer network (support for Rapid Gossip Sync will follow)
  • Entropy for the Lightning and on-chain wallets may be generated and persisted for or provided by the user (support for BIP39 mnemonics will follow)
Language Support
LDK Node is written in Rust and may therefore be natively included in any std Rust program. Beyond its Rust API it also offers language bindings for Swift, Kotlin, and Python based on UniFFI.
About
A ready-to-go node implementation built using LDK.
Resources
Readme
License
Activity
Stars
0 stars
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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LDK Node
A ready-to-go Lightning node library built using LDK and BDK.
LDK Node is a non-custodial Lightning node in library form. Its central goal is to provide a small, simple, and straightforward interface that enables users to easily set up and run a Lightning node with an integrated on-chain wallet. While minimalism is at its core, LDK Node aims to be sufficiently modular and configurable to be useful for a variety of use cases.
Getting Started
The primary abstraction of the library is the Node, which can be retrieved by setting up and configuring a Builder to your liking and calling build(). Node can then be controlled via commands such as start, stop, connect_open_channel, send_payment, etc.:
use ldk_node::Builder;use ldk_node::lightning_invoice::Invoice;use std::str::FromStr;fnmain(){let node = Builder::new().set_network("testnet").set_esplora_server_url("https://blockstream.info/testnet/api".to_string()).build();
node.start().unwrap();let _funding_address = node.new_funding_address();// .. fund address ..
node.sync_wallets().unwrap();
node.connect_open_channel("NODE_ID@PEER_ADDR:PORT",10000,false).unwrap();let invoice = Invoice::from_str("INVOICE_STR").unwrap();
node.send_payment(invoice).unwrap();
node.stop().unwrap();}
Modularity
LDK Node currently comes with a decidedly opionated set of design choices:
  • On-chain data is handled by the integrated BDK wallet
  • Chain data is accessed via Esplora (support for Electrum and bitcoind RPC will follow)
  • Wallet and channel state is persisted to file system (support for SQLite will follow)
  • Gossip data is sourced via Lightnings peer-to-peer network (support for Rapid Gossip Sync will follow)
  • Entropy for the Lightning and on-chain wallets may be generated and persisted for or provided by the user (support for BIP39 mnemonics will follow)
Language Support
LDK Node is written in Rust and may therefore be natively included in any std Rust program. Beyond its Rust API it also offers language bindings for Swift, Kotlin, and Python based on UniFFI.
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A ready-to-go node implementation built using LDK.
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