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Offset Helper

This contract has the purpose to simplify the carbon offsetting process.

What it does in more exact terms is it abstracts the process of retiring TCO2, which normally looks like so:

  • user exchanges USDC for BCT/NCT tokens at one of the DEXs (Uniswap, Sushiswap, etc. depending on network)
  • user interacts with the BCT/NCT token contract to redeem the tokens for TCO2
  • user interacts with the TCO2 token contract to retire the TCO2

With the OffsetHelper contract, the user only needs to interact with the OffsetHelper contract, which will take care of the rest in a single transaction.

Deployments

ContractPolygonMumbai
OffsetHelper0xFAFcCd01C395e4542BEed819De61f02f5562fAEa0x30dC279166DCFB69F52C91d6A3380dCa75D0fCa7

OffsetHelper

The OffsetHelper contract implements helper functions that simplify the carbon offsetting (retirement) process.

See ./docs/OffsetHelper.md for detailed documentation.

Development

Preqrequisites

  1. Install the required packages: 
    yarn
  2. Copy .env.example to .env and modify values of the required environment variables:
    1. POLYGON_URL/MUMBAI_URL to specify custom RPC endpoints for Polygon Mainnet, respectively, the Mumbai Testnet.
    2. PRIVATE_KEY and POLYGONSCAN_KEY in order to deploy contract and publish source code on polygonscan.

Commands

Use the following commands to compile, test and deploy the contracts:

yarn compile
yarn test # test using a polygon fork
yarn coverage # test using a polygon fork with coverage report
yarn deploy

Documentation can be auto-generated from the contract's natspec in ./docs/ using

yarn doc

Deploy the contract locally with:

yarn hardhat --network hardhat deployOffsetHelper --verify false

About

A smart contract that abstracts away the process of offsetting CO2 on-chain. It takes you from USDC (or other tokens) to offset CO2.

Resources

Readme
License
Activity
Custom properties

Stars

0 stars

Watchers

0 watching

Forks

0 forks
Report repository

Releases

Packages

Contributors

Languages

, '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" + '

Skip to content
BranchesTags
Repository files navigation
Offset Helper
This contract has the purpose to simplify the carbon offsetting process.
What it does in more exact terms is it abstracts the process of retiring TCO2, which normally looks like so:
  • user exchanges USDC for BCT/NCT tokens at one of the DEXs (Uniswap, Sushiswap, etc. depending on network)
  • user interacts with the BCT/NCT token contract to redeem the tokens for TCO2
  • user interacts with the TCO2 token contract to retire the TCO2
With the OffsetHelper contract, the user only needs to interact with the OffsetHelper contract, which will take care of the rest in a single transaction.
Deployments
ContractPolygonMumbai
OffsetHelper0xFAFcCd01C395e4542BEed819De61f02f5562fAEa0x30dC279166DCFB69F52C91d6A3380dCa75D0fCa7
OffsetHelper
The OffsetHelper contract implements helper functions that simplify the carbon offsetting (retirement) process.
See ./docs/OffsetHelper.md for detailed documentation.
Development
Preqrequisites
  1. Install the required packages:

    yarn

  2. Copy .env.example to .env and modify values of the required environment variables:

    1. POLYGON_URL/MUMBAI_URL to specify custom RPC endpoints for Polygon Mainnet, respectively, the Mumbai Testnet.
    2. PRIVATE_KEY and POLYGONSCAN_KEY in order to deploy contract and publish source code on polygonscan.
Commands
Use the following commands to compile, test and deploy the contracts:
yarn compile
yarn test # test using a polygon fork
yarn coverage # test using a polygon fork with coverage report
yarn deploy

Documentation can be auto-generated from the contract's natspec in ./docs/ using
yarn doc

Deploy the contract locally with:
yarn hardhat --network hardhat deployOffsetHelper --verify false

About
A smart contract that abstracts away the process of offsetting CO2 on-chain. It takes you from USDC (or other tokens) to offset CO2.
Resources
Readme
License
Activity
Custom properties
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('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Offset Helper
This contract has the purpose to simplify the carbon offsetting process.
What it does in more exact terms is it abstracts the process of retiring TCO2, which normally looks like so:
  • user exchanges USDC for BCT/NCT tokens at one of the DEXs (Uniswap, Sushiswap, etc. depending on network)
  • user interacts with the BCT/NCT token contract to redeem the tokens for TCO2
  • user interacts with the TCO2 token contract to retire the TCO2
With the OffsetHelper contract, the user only needs to interact with the OffsetHelper contract, which will take care of the rest in a single transaction.
Deployments
ContractPolygonMumbai
OffsetHelper0xFAFcCd01C395e4542BEed819De61f02f5562fAEa0x30dC279166DCFB69F52C91d6A3380dCa75D0fCa7
OffsetHelper
The OffsetHelper contract implements helper functions that simplify the carbon offsetting (retirement) process.
See ./docs/OffsetHelper.md for detailed documentation.
Development
Preqrequisites
  1. Install the required packages:

    yarn

  2. Copy .env.example to .env and modify values of the required environment variables:

    1. POLYGON_URL/MUMBAI_URL to specify custom RPC endpoints for Polygon Mainnet, respectively, the Mumbai Testnet.
    2. PRIVATE_KEY and POLYGONSCAN_KEY in order to deploy contract and publish source code on polygonscan.
Commands
Use the following commands to compile, test and deploy the contracts:
yarn compile
yarn test # test using a polygon fork
yarn coverage # test using a polygon fork with coverage report
yarn deploy

Documentation can be auto-generated from the contract's natspec in ./docs/ using
yarn doc

Deploy the contract locally with:
yarn hardhat --network hardhat deployOffsetHelper --verify false

About
A smart contract that abstracts away the process of offsetting CO2 on-chain. It takes you from USDC (or other tokens) to offset CO2.
Resources
Readme
License
Activity
Custom properties
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
BranchesTags
Repository files navigation
Offset Helper
This contract has the purpose to simplify the carbon offsetting process.
What it does in more exact terms is it abstracts the process of retiring TCO2, which normally looks like so:
  • user exchanges USDC for BCT/NCT tokens at one of the DEXs (Uniswap, Sushiswap, etc. depending on network)
  • user interacts with the BCT/NCT token contract to redeem the tokens for TCO2
  • user interacts with the TCO2 token contract to retire the TCO2
With the OffsetHelper contract, the user only needs to interact with the OffsetHelper contract, which will take care of the rest in a single transaction.
Deployments
ContractPolygonMumbai
OffsetHelper0xFAFcCd01C395e4542BEed819De61f02f5562fAEa0x30dC279166DCFB69F52C91d6A3380dCa75D0fCa7
OffsetHelper
The OffsetHelper contract implements helper functions that simplify the carbon offsetting (retirement) process.
See ./docs/OffsetHelper.md for detailed documentation.
Development
Preqrequisites
  1. Install the required packages:

    yarn

  2. Copy .env.example to .env and modify values of the required environment variables:

    1. POLYGON_URL/MUMBAI_URL to specify custom RPC endpoints for Polygon Mainnet, respectively, the Mumbai Testnet.
    2. PRIVATE_KEY and POLYGONSCAN_KEY in order to deploy contract and publish source code on polygonscan.
Commands
Use the following commands to compile, test and deploy the contracts:
yarn compile
yarn test # test using a polygon fork
yarn coverage # test using a polygon fork with coverage report
yarn deploy

Documentation can be auto-generated from the contract's natspec in ./docs/ using
yarn doc

Deploy the contract locally with:
yarn hardhat --network hardhat deployOffsetHelper --verify false

About
A smart contract that abstracts away the process of offsetting CO2 on-chain. It takes you from USDC (or other tokens) to offset CO2.
Resources
Readme
License
Activity
Custom properties
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
BranchesTags
Repository files navigation
Offset Helper
This contract has the purpose to simplify the carbon offsetting process.
What it does in more exact terms is it abstracts the process of retiring TCO2, which normally looks like so:
  • user exchanges USDC for BCT/NCT tokens at one of the DEXs (Uniswap, Sushiswap, etc. depending on network)
  • user interacts with the BCT/NCT token contract to redeem the tokens for TCO2
  • user interacts with the TCO2 token contract to retire the TCO2
With the OffsetHelper contract, the user only needs to interact with the OffsetHelper contract, which will take care of the rest in a single transaction.
Deployments
ContractPolygonMumbai
OffsetHelper0xFAFcCd01C395e4542BEed819De61f02f5562fAEa0x30dC279166DCFB69F52C91d6A3380dCa75D0fCa7
OffsetHelper
The OffsetHelper contract implements helper functions that simplify the carbon offsetting (retirement) process.
See ./docs/OffsetHelper.md for detailed documentation.
Development
Preqrequisites
  1. Install the required packages:

    yarn

  2. Copy .env.example to .env and modify values of the required environment variables:

    1. POLYGON_URL/MUMBAI_URL to specify custom RPC endpoints for Polygon Mainnet, respectively, the Mumbai Testnet.
    2. PRIVATE_KEY and POLYGONSCAN_KEY in order to deploy contract and publish source code on polygonscan.
Commands
Use the following commands to compile, test and deploy the contracts:
yarn compile
yarn test # test using a polygon fork
yarn coverage # test using a polygon fork with coverage report
yarn deploy

Documentation can be auto-generated from the contract's natspec in ./docs/ using
yarn doc

Deploy the contract locally with:
yarn hardhat --network hardhat deployOffsetHelper --verify false

About
A smart contract that abstracts away the process of offsetting CO2 on-chain. It takes you from USDC (or other tokens) to offset CO2.
Resources
Readme
License
Activity
Custom properties
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('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Offset Helper
This contract has the purpose to simplify the carbon offsetting process.
What it does in more exact terms is it abstracts the process of retiring TCO2, which normally looks like so:
  • user exchanges USDC for BCT/NCT tokens at one of the DEXs (Uniswap, Sushiswap, etc. depending on network)
  • user interacts with the BCT/NCT token contract to redeem the tokens for TCO2
  • user interacts with the TCO2 token contract to retire the TCO2
With the OffsetHelper contract, the user only needs to interact with the OffsetHelper contract, which will take care of the rest in a single transaction.
Deployments
ContractPolygonMumbai
OffsetHelper0xFAFcCd01C395e4542BEed819De61f02f5562fAEa0x30dC279166DCFB69F52C91d6A3380dCa75D0fCa7
OffsetHelper
The OffsetHelper contract implements helper functions that simplify the carbon offsetting (retirement) process.
See ./docs/OffsetHelper.md for detailed documentation.
Development
Preqrequisites
  1. Install the required packages:

    yarn

  2. Copy .env.example to .env and modify values of the required environment variables:

    1. POLYGON_URL/MUMBAI_URL to specify custom RPC endpoints for Polygon Mainnet, respectively, the Mumbai Testnet.
    2. PRIVATE_KEY and POLYGONSCAN_KEY in order to deploy contract and publish source code on polygonscan.
Commands
Use the following commands to compile, test and deploy the contracts:
yarn compile
yarn test # test using a polygon fork
yarn coverage # test using a polygon fork with coverage report
yarn deploy

Documentation can be auto-generated from the contract's natspec in ./docs/ using
yarn doc

Deploy the contract locally with:
yarn hardhat --network hardhat deployOffsetHelper --verify false

About
A smart contract that abstracts away the process of offsetting CO2 on-chain. It takes you from USDC (or other tokens) to offset CO2.
Resources
Readme
License
Activity
Custom properties
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
BranchesTags
Repository files navigation
Offset Helper
This contract has the purpose to simplify the carbon offsetting process.
What it does in more exact terms is it abstracts the process of retiring TCO2, which normally looks like so:
  • user exchanges USDC for BCT/NCT tokens at one of the DEXs (Uniswap, Sushiswap, etc. depending on network)
  • user interacts with the BCT/NCT token contract to redeem the tokens for TCO2
  • user interacts with the TCO2 token contract to retire the TCO2
With the OffsetHelper contract, the user only needs to interact with the OffsetHelper contract, which will take care of the rest in a single transaction.
Deployments
ContractPolygonMumbai
OffsetHelper0xFAFcCd01C395e4542BEed819De61f02f5562fAEa0x30dC279166DCFB69F52C91d6A3380dCa75D0fCa7
OffsetHelper
The OffsetHelper contract implements helper functions that simplify the carbon offsetting (retirement) process.
See ./docs/OffsetHelper.md for detailed documentation.
Development
Preqrequisites
  1. Install the required packages:

    yarn

  2. Copy .env.example to .env and modify values of the required environment variables:

    1. POLYGON_URL/MUMBAI_URL to specify custom RPC endpoints for Polygon Mainnet, respectively, the Mumbai Testnet.
    2. PRIVATE_KEY and POLYGONSCAN_KEY in order to deploy contract and publish source code on polygonscan.
Commands
Use the following commands to compile, test and deploy the contracts:
yarn compile
yarn test # test using a polygon fork
yarn coverage # test using a polygon fork with coverage report
yarn deploy

Documentation can be auto-generated from the contract's natspec in ./docs/ using
yarn doc

Deploy the contract locally with:
yarn hardhat --network hardhat deployOffsetHelper --verify false

About
A smart contract that abstracts away the process of offsetting CO2 on-chain. It takes you from USDC (or other tokens) to offset CO2.
Resources
Readme
License
Activity
Custom properties
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); }
})();
})();

Skip to content
BranchesTags
Repository files navigation
Offset Helper
This contract has the purpose to simplify the carbon offsetting process.
What it does in more exact terms is it abstracts the process of retiring TCO2, which normally looks like so:
  • user exchanges USDC for BCT/NCT tokens at one of the DEXs (Uniswap, Sushiswap, etc. depending on network)
  • user interacts with the BCT/NCT token contract to redeem the tokens for TCO2
  • user interacts with the TCO2 token contract to retire the TCO2
With the OffsetHelper contract, the user only needs to interact with the OffsetHelper contract, which will take care of the rest in a single transaction.
Deployments
ContractPolygonMumbai
OffsetHelper0xFAFcCd01C395e4542BEed819De61f02f5562fAEa0x30dC279166DCFB69F52C91d6A3380dCa75D0fCa7
OffsetHelper
The OffsetHelper contract implements helper functions that simplify the carbon offsetting (retirement) process.
See ./docs/OffsetHelper.md for detailed documentation.
Development
Preqrequisites
  1. Install the required packages:

    yarn

  2. Copy .env.example to .env and modify values of the required environment variables:

    1. POLYGON_URL/MUMBAI_URL to specify custom RPC endpoints for Polygon Mainnet, respectively, the Mumbai Testnet.
    2. PRIVATE_KEY and POLYGONSCAN_KEY in order to deploy contract and publish source code on polygonscan.
Commands
Use the following commands to compile, test and deploy the contracts:
yarn compile
yarn test # test using a polygon fork
yarn coverage # test using a polygon fork with coverage report
yarn deploy

Documentation can be auto-generated from the contract's natspec in ./docs/ using
yarn doc

Deploy the contract locally with:
yarn hardhat --network hardhat deployOffsetHelper --verify false

About
A smart contract that abstracts away the process of offsetting CO2 on-chain. It takes you from USDC (or other tokens) to offset CO2.
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