bitcoind RPC: Skip validating header chain for newly setup nodes - #414

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bitcoind RPC: Skip validating header chain for newly setup nodes#414
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@tnulltnull commented Dec 2, 2024

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When we just setup a new node, all chain listeners will still be synced up to the genesis hash. In order to allow for faster startup, we skip validating the entirety of the header chain by continuing with the current best block polled from bitcoind.

Note that this doesn't noticeably change our security model as we're trusting the chain data source, for example to not censor us, anyways. And, we're of course still validating the PoW for the best block we're polling.

When we just setup a new node, all chain listeners will still be synced
up to the genesis hash. In order to allow for faster startup, we skip
validating the entirety of the header chain by continuing with the
current best block polled from `bitcoind`.
Note that this doesn't noticeably change our security model as we're
trusting the chain data source, for example to not censor us, anyways.
And, we're of course still validating the PoW for the best block we're
polling.
@tnull
tnull requested a review from jkczyzDecember 2, 2024 14:44
@tnull

tnull commented Dec 2, 2024

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Hmm, nevermind. I think this currently doesn't work. At least AFAICT there is no way to skip header validation after the fact, i.e., once the ChannelManager had been initialized with the genesis hash. And of course, we can't poll during/prior to initialization in the builder as we don't have a runtime available.

One way to consider shortening the header validation would be to eventually introducing checkpoints, i.e., initialize the listeners with a more recent best block on mainnet.

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} 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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bitcoind RPC: Skip validating header chain for newly setup nodes - #414

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bitcoind RPC: Skip validating header chain for newly setup nodes#414
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@tnulltnull commented Dec 2, 2024

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When we just setup a new node, all chain listeners will still be synced up to the genesis hash. In order to allow for faster startup, we skip validating the entirety of the header chain by continuing with the current best block polled from bitcoind.

Note that this doesn't noticeably change our security model as we're trusting the chain data source, for example to not censor us, anyways. And, we're of course still validating the PoW for the best block we're polling.

When we just setup a new node, all chain listeners will still be synced
up to the genesis hash. In order to allow for faster startup, we skip
validating the entirety of the header chain by continuing with the
current best block polled from `bitcoind`.
Note that this doesn't noticeably change our security model as we're
trusting the chain data source, for example to not censor us, anyways.
And, we're of course still validating the PoW for the best block we're
polling.
@tnull
tnull requested a review from jkczyzDecember 2, 2024 14:44
@tnull

tnull commented Dec 2, 2024

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Hmm, nevermind. I think this currently doesn't work. At least AFAICT there is no way to skip header validation after the fact, i.e., once the ChannelManager had been initialized with the genesis hash. And of course, we can't poll during/prior to initialization in the builder as we don't have a runtime available.

One way to consider shortening the header validation would be to eventually introducing checkpoints, i.e., initialize the listeners with a more recent best block on mainnet.

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, '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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bitcoind RPC: Skip validating header chain for newly setup nodes - #414

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bitcoind RPC: Skip validating header chain for newly setup nodes#414
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@tnulltnull commented Dec 2, 2024

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When we just setup a new node, all chain listeners will still be synced up to the genesis hash. In order to allow for faster startup, we skip validating the entirety of the header chain by continuing with the current best block polled from bitcoind.

Note that this doesn't noticeably change our security model as we're trusting the chain data source, for example to not censor us, anyways. And, we're of course still validating the PoW for the best block we're polling.

When we just setup a new node, all chain listeners will still be synced
up to the genesis hash. In order to allow for faster startup, we skip
validating the entirety of the header chain by continuing with the
current best block polled from `bitcoind`.
Note that this doesn't noticeably change our security model as we're
trusting the chain data source, for example to not censor us, anyways.
And, we're of course still validating the PoW for the best block we're
polling.
@tnull
tnull requested a review from jkczyzDecember 2, 2024 14:44
@tnull

tnull commented Dec 2, 2024

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Hmm, nevermind. I think this currently doesn't work. At least AFAICT there is no way to skip header validation after the fact, i.e., once the ChannelManager had been initialized with the genesis hash. And of course, we can't poll during/prior to initialization in the builder as we don't have a runtime available.

One way to consider shortening the header validation would be to eventually introducing checkpoints, i.e., initialize the listeners with a more recent best block on mainnet.

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, '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('^' + ".*" + '
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bitcoind RPC: Skip validating header chain for newly setup nodes - #414

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bitcoind RPC: Skip validating header chain for newly setup nodes#414
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@tnulltnull commented Dec 2, 2024

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When we just setup a new node, all chain listeners will still be synced up to the genesis hash. In order to allow for faster startup, we skip validating the entirety of the header chain by continuing with the current best block polled from bitcoind.

Note that this doesn't noticeably change our security model as we're trusting the chain data source, for example to not censor us, anyways. And, we're of course still validating the PoW for the best block we're polling.

When we just setup a new node, all chain listeners will still be synced
up to the genesis hash. In order to allow for faster startup, we skip
validating the entirety of the header chain by continuing with the
current best block polled from `bitcoind`.
Note that this doesn't noticeably change our security model as we're
trusting the chain data source, for example to not censor us, anyways.
And, we're of course still validating the PoW for the best block we're
polling.
@tnull
tnull requested a review from jkczyzDecember 2, 2024 14:44
@tnull

tnull commented Dec 2, 2024

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Hmm, nevermind. I think this currently doesn't work. At least AFAICT there is no way to skip header validation after the fact, i.e., once the ChannelManager had been initialized with the genesis hash. And of course, we can't poll during/prior to initialization in the builder as we don't have a runtime available.

One way to consider shortening the header validation would be to eventually introducing checkpoints, i.e., initialize the listeners with a more recent best block on mainnet.

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, '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" + '
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bitcoind RPC: Skip validating header chain for newly setup nodes - #414

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bitcoind RPC: Skip validating header chain for newly setup nodes#414
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@tnulltnull commented Dec 2, 2024

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When we just setup a new node, all chain listeners will still be synced up to the genesis hash. In order to allow for faster startup, we skip validating the entirety of the header chain by continuing with the current best block polled from bitcoind.

Note that this doesn't noticeably change our security model as we're trusting the chain data source, for example to not censor us, anyways. And, we're of course still validating the PoW for the best block we're polling.

When we just setup a new node, all chain listeners will still be synced
up to the genesis hash. In order to allow for faster startup, we skip
validating the entirety of the header chain by continuing with the
current best block polled from `bitcoind`.
Note that this doesn't noticeably change our security model as we're
trusting the chain data source, for example to not censor us, anyways.
And, we're of course still validating the PoW for the best block we're
polling.
@tnull
tnull requested a review from jkczyzDecember 2, 2024 14:44
@tnull

tnull commented Dec 2, 2024

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Hmm, nevermind. I think this currently doesn't work. At least AFAICT there is no way to skip header validation after the fact, i.e., once the ChannelManager had been initialized with the genesis hash. And of course, we can't poll during/prior to initialization in the builder as we don't have a runtime available.

One way to consider shortening the header validation would be to eventually introducing checkpoints, i.e., initialize the listeners with a more recent best block on mainnet.

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, '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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bitcoind RPC: Skip validating header chain for newly setup nodes - #414

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bitcoind RPC: Skip validating header chain for newly setup nodes#414
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@tnulltnull commented Dec 2, 2024

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When we just setup a new node, all chain listeners will still be synced up to the genesis hash. In order to allow for faster startup, we skip validating the entirety of the header chain by continuing with the current best block polled from bitcoind.

Note that this doesn't noticeably change our security model as we're trusting the chain data source, for example to not censor us, anyways. And, we're of course still validating the PoW for the best block we're polling.

When we just setup a new node, all chain listeners will still be synced
up to the genesis hash. In order to allow for faster startup, we skip
validating the entirety of the header chain by continuing with the
current best block polled from `bitcoind`.
Note that this doesn't noticeably change our security model as we're
trusting the chain data source, for example to not censor us, anyways.
And, we're of course still validating the PoW for the best block we're
polling.
@tnull
tnull requested a review from jkczyzDecember 2, 2024 14:44
@tnull

tnull commented Dec 2, 2024

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Hmm, nevermind. I think this currently doesn't work. At least AFAICT there is no way to skip header validation after the fact, i.e., once the ChannelManager had been initialized with the genesis hash. And of course, we can't poll during/prior to initialization in the builder as we don't have a runtime available.

One way to consider shortening the header validation would be to eventually introducing checkpoints, i.e., initialize the listeners with a more recent best block on mainnet.

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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"); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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bitcoind RPC: Skip validating header chain for newly setup nodes - #414

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@tnulltnull commented Dec 2, 2024

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When we just setup a new node, all chain listeners will still be synced up to the genesis hash. In order to allow for faster startup, we skip validating the entirety of the header chain by continuing with the current best block polled from bitcoind.

Note that this doesn't noticeably change our security model as we're trusting the chain data source, for example to not censor us, anyways. And, we're of course still validating the PoW for the best block we're polling.

When we just setup a new node, all chain listeners will still be synced
up to the genesis hash. In order to allow for faster startup, we skip
validating the entirety of the header chain by continuing with the
current best block polled from `bitcoind`.
Note that this doesn't noticeably change our security model as we're
trusting the chain data source, for example to not censor us, anyways.
And, we're of course still validating the PoW for the best block we're
polling.
@tnull
tnull requested a review from jkczyzDecember 2, 2024 14:44
@tnull

tnull commented Dec 2, 2024

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Hmm, nevermind. I think this currently doesn't work. At least AFAICT there is no way to skip header validation after the fact, i.e., once the ChannelManager had been initialized with the genesis hash. And of course, we can't poll during/prior to initialization in the builder as we don't have a runtime available.

One way to consider shortening the header validation would be to eventually introducing checkpoints, i.e., initialize the listeners with a more recent best block on mainnet.

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, '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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bitcoind RPC: Skip validating header chain for newly setup nodes - #414

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@tnulltnull commented Dec 2, 2024

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When we just setup a new node, all chain listeners will still be synced up to the genesis hash. In order to allow for faster startup, we skip validating the entirety of the header chain by continuing with the current best block polled from bitcoind.

Note that this doesn't noticeably change our security model as we're trusting the chain data source, for example to not censor us, anyways. And, we're of course still validating the PoW for the best block we're polling.

When we just setup a new node, all chain listeners will still be synced
up to the genesis hash. In order to allow for faster startup, we skip
validating the entirety of the header chain by continuing with the
current best block polled from `bitcoind`.
Note that this doesn't noticeably change our security model as we're
trusting the chain data source, for example to not censor us, anyways.
And, we're of course still validating the PoW for the best block we're
polling.
@tnull
tnull requested a review from jkczyzDecember 2, 2024 14:44
@tnull

tnull commented Dec 2, 2024

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Hmm, nevermind. I think this currently doesn't work. At least AFAICT there is no way to skip header validation after the fact, i.e., once the ChannelManager had been initialized with the genesis hash. And of course, we can't poll during/prior to initialization in the builder as we don't have a runtime available.

One way to consider shortening the header validation would be to eventually introducing checkpoints, i.e., initialize the listeners with a more recent best block on mainnet.

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