Awesome

Official

• EIP2535 Diamonds - Standard.
• EIP2535 Diamonds discussion thread - Github issue created to discuss Diamonds.
• Twitter @eip2535 - Twitter handle.
• EIP2535 Blog - Technical articles about diamonds.
• EIP2535 Discord Server - Discord server for discussing EIP2535 Diamonds and related things.
• Diamond reference implementation comparisons - Compares Diamond reference implementations.
• diamond-1-hardhat - Simple Diamond reference implementation.
• diamond-2-hardhat - Gas-optimized Diamond reference implementation.
• diamond-3-hardhat - Simple loupe (introspecting functions) Diamond reference implementation.

Websites

• info.diamonds

Articles

Diamonds

• Introduction to EIP-2535 Diamonds - Explains the problem diamonds were initially developed to solve, how they work, how to organize them, and how to deploy and upgrade them.
• Compliance with EIP-2535 Diamonds Standard - How implementations can comply with the standard.
• EIP-2535: A Technical Overview of the Diamond Smart Contract Standard - Overview and tutorial.
• EIP-2535: A standard for organizing and upgrading a modular smart contract system. - Describes what diamonds are, how they work and how to use them.
• Diamond Loupe Functions - Explains the need and use of loupe functions (diamond introspecting functions).
• How to Share Functions Between Facets of a Diamond - Shows ways to share functionality between facets of a diamond.
• A Beginner’s Guide to The Diamond Standard Proxy - Explains EIP-2535 Diamonds.
• Idiots Guide to Using an EIP-2535 Diamond Proxy
• EIP 2535: Diamond standard explained — Part 1: Why diamonds?
• EIP 2535: Diamond standard explained – Part 2: What are diamonds and how they work
• EIP 2535: Diamond standard explained – Part 3: Understanding storage patterns in diamonds
• The Diamond Standard (EIP-2535) Explained: Part 1
• The Diamond Standard (EIP-2535) Explained: Part 2
• A better way to initialize upgradeable contracts - Shows how to execute initialization functions during diamond upgrades.
• An Introduction to ERC2535 Diamonds Development And Why Solidity Devs Should Adopt It
• Transforming web3 through a Diamond Management System
• Achieving Universal and Reusable Smart Contracts via ERC2535 Diamond Proxy Standard
• A guide to building and deploying upgradeable contracts on CELO with Diamond standard
• How to use TypeScript with EIP-2535: Diamonds
• Multiple NFT and ERC-20 tokens backed by a single diamond

Diamond Storage

• How Diamond Storage Works - Explains diamond storage and shows an example.
• New Storage Layout For Proxy Contracts and Diamonds - First written article that describes diamond storage.
• AppStorage Pattern for State Variables in Solidity - Describes and shows AppStorage.
• Rules for Upgrading Diamond Storage - Best documentation about upgrading Diamond Storage.
• Migrating the EIP-2535 Diamond Storage layout - Shows Diamond Storage and how to migrate data to new Diamond Storage in upgrades.

Diamond Deployment and Upgrades

• Diamond Upgrades - How to perform diamond upgrades.
• Example of Adding New State Variables in Diamond Upgrade - Shows how to add new state variables to a diamond.
• Initializing an EIP-2535 Diamond for deployment and upgrades
• A better way to initialize upgradeable contracts - Shows how to execute initialization functions during diamond upgrades.
• Upgradeable Smart Contracts and Initialization - Compares methods of initializing upgrades.

Diamonds in Projects

• 🌱 Beanstalk 🤝 EIP-2535 💎 - Lays out benefits of EIP-2535 with examples from their project.
• Smart Contracts as Apps - EIP-2535 Diamonds and the feasibility of a DAO Operating System
• Dark Forest & the Diamond Standard - Dark Forest project moves to and dicusses diamonds.
• The Diamond Standard: A new paradigm for upgradeability - DerivaDEX on diamonds.
• We like the (EIP-2535) Diamonds - Premia Finance talks about their use of diamonds.
• Why Gotchivault is upgrading to the Diamond standard - How to upgrade an existing proxy contract to EIP2535 Diamonds.
• Handling multiple tokens, with a modern solidity architecture via Diamonds & ERC1155
• Smart contract packages — upgradeability for normal people

Diamond Project Documentation

• Aavegotchi Smart Contract Documentation
• LIFI Overview
• Geo Web Documentation

Videos

• Full course on Diamond Proxy Pattern with code walkthrough
• Ethereum Diamonds - EIP-2535 Multi Facet Proxy
• How to Organize a Diamond with Facets
• Create Diamond Contracts In Your Browser Using Remix And Louper
• Share Functions And Storage With Diamond Contracts | Louper/Remix

Libraries

• Diamond Scaffold - An NPM package to help in scaffolding Diamond Smart Contracts.
• SolidState Solidity - Upgradeable-first Solidity smart contract development library that supports diamonds.
• ERC20 Facet - A facet that adds ERC-20 token functionality to the host contract.
• ERC721A-Upgradeable - Gas efficient ERC721 implementation.
• ERC1155-DiamondStorage - ERC1155 Implementation
• OpenZeppelin Diamonds - OpenZeppelin contracts transpiled to use Diamonds & Facets

Tools

User Interfaces

• Louper - The Ethereum Diamond Inspector - User interface for diamonds.
• DiamondScan - User inteface for diamonds.
• Governance Diamonds - User interface for exploring diamonds.
• diamond-etherscan - Make your EIP-2535 Diamond etherscan compatible.
• Diamantair - Deploying new diamonds from a template.

Hardhat

• diamond-2-hardhat-v6 - diamond-2-hardhat using TypeScript and Hardhat with Ethers v6.
• diamond-hardhat - Extension that adds deeper Hardhat integrations for faster/more maintainable ERC2535 Diamond contract development.
• hardhat-diamond-abi - Hardhat plugin to combine multiple ABIs into a Diamond ABI artifact.
• hardhat-deploy - Hardhat plugin that supports deploying, upgrading and managing diamonds.
• Zem - Hardhat deployment management system that supports deploying, upgrading and managing diamonds.

Foundry

• diamond-foundry - A modern framework for creating EIP2535 Diamonds.
• Foundry-Hardhat-Diamonds - Mimimal template for Diamonds.
• foundry-diamond-deploy - Minimal example of a Diamond deployment script using foundry.
• Diamond-Foundry - Foundry version of Diamond Pattern (EIP-2535) reference implementation.
• Foundry template for diamond-3

Diamond Command Line Tools

• gemforge - Command-line tool for building, deploying and upgrading Diamond Standard contracts on EVM chains.
• louper-cli - Command-line tool for Louper.dev

Package Management & Facet Registries

• 0xpm - Diamond-based smart contract package manager.
• Ethereum Package Manager - GUI to deploy and upgrade Diamond proxies and facets. Granular facet control with ability to toggle facet functions on/off.

Python

• Inspector Facet - Inspection utility for EIP2535 Diamond proxies. Written in Python.

Command line tools

• diamond-diff - Tool that helps retrieve the necessary diamondCut by checking against a Diamond model.

Transpilers

• OpenZeppelin Transpiler for Diamonds - Updated OpenZeppelin Transpiler supporting Diamond patter with significant speed improvements

Security Audits

Note that some changes have been made to the Diamond reference implementations since the following audits have been done.

Omniscia

• Smart Contract Audit - Omniscia published a smart contract audit of the diamond implementing AllianceBlock’s token bridge, which uses the diamond-3 implementation.

• Smart Contract Audit - Omniscia published a smart contract audit of the Seen.Haus Marketplace Diamond, which uses the diamond-3 implementation, modified for role-based access rather than single-owner.

Certik

• Smart Contract Audit - Certik published a smart contract audit of Aavegotchi’s core diamond which use the diamond-3 implementation.
• Smart Contract Audit - Certik published a smart contract audit of DOTC’s diamond.

Quantstamp

• Smart Contract Audit - Quantstamp published a smart contract audit of Aavegotchi’s staking diamond which used the diamond-2 implementation.

• Smart Contract Audit - Quantstamp published a smart contract audit of BarnBridge’s Barn diamond, which uses BarnBridge’s own implementation of EIP-2535 Diamonds based on diamond-1.

• Smart Contract Audit - Quantstamp published a smart contract audit of DerivaDEX’s governance diamond, which uses the diamond-3 implementation.

MixBytes

• Smart Contract Audit - MixBytes published a smart contract audit of PieDAO’s ExperiPie diamond, which uses the diamond-2 implementation.

Haechi Audit

• Smart Contract Audit - Haechi Audit published a smart contract audit of BarnBridge’s Barn diamond, which uses BarnBridge’s own implementation of EIP-2535 Diamonds based on diamond-1.

Projects using Diamonds

1. DerivaDEX
2. BarnBridge
3. Aavegotchi
4. ERC721A-Upgradeable
5. PieDAO
6. Boson Protocol
7. hardhat-deploy
8. Nifty Cannon
9. AllianceBlock
10. Louper
11. solidstate-solidity
12. Nayms
13. Diamond Setter
14. Sherlock
15. Premia Finance
16. Nocturnal Finance
17. scaffold-eth
18. diamond-starter-kit
19. scaffold-eth-diamond-standard
20. Sanshu Inu
21. Gelato Network
22. Teller Finance
23. seen.haus
24. thx.network
25. Token Gallery
26. Beanstalk Protocol
27. kanaloa.network
28. PoolSharks
29. Bitpixel
30. neodymium-contracts
31. INU Token
32. Sigmadex
33. TuffToken
34. hardhat-diamond-abi
35. EnterDAO
36. Gemcutter
37. GNUS.AI
38. Dark Forest
39. Moonstream DAO
40. Chain of Empires
41. LI.FI
42. cryptopoopz.com
43. Copium Wars
44. Typenauts
45. connext.network
46. The Saudis
47. Spring Game
48. oncyber
49. Avathereum
50. Cartesi
51. Energy Web
52. Shattered Eon
53. Zem
54. SolarProtocol
55. VOID.MONEY
56. Simple DeFi
57. CroSwap
58. Lightm
59. PartyFinance
60. 1o1.art
61. withmantra.com
62. Nobility Token
63. meTokens
64. Fyde Treasury Protocol
65. VaporFi
66. MetaMask Grants DAO
67. zkSync
68. Crypto Unicorns
69. Forward Protocol
70. Ubiquity Dollar
71. Geo Web
72. Nexera ID
73. CronosNode NFTs
74. Tombala Games
75. Perp88
76. Helix2
77. Pendle
78. Worker Node Toolkit
79. NiftyKit
80. Babylon
81. Autify Network
82. Keepers
83. MetaBase
84. props
85. VL Relics
86. ApeFathers NFT
87. ssv.network
88. Pinjam
89. Venus Protocol
90. OmniKingdoms
91. ZKasino
92. FrenPet
93. Citizen Capital
94. basedVC
95. Rico Credit System
96. GEMPAD
97. Kresko Protocol
98. untrading
99. Enzo Racing
100. Trust Wallet
101. KingPinOnBase
102. Parallel
103. JungleArt
104. Owl Protocol
105. Vaultus Finance
106. zkLink
107. OctoDeFi
108. RAIRprotocol
109. kewl
110. Mande Network
111. FeverTokens
112. Pantos
113. Amplified
114. RangoExchange
115. Flare Networks
116. BoomBots
117. River Protocol
118. Towns
119. Splatter Party