OpenZeppelin Contracts for Stellar v0.8 is live, introducing the Confidential Token 💫
Add a confidential layer on top of any SEP-41 token to keep balances and transfer amounts private, with compliance controls built in.
Full release ↓
Add a confidential layer on top of any SEP-41 token to keep balances and transfer amounts private, with compliance controls built in.
Full release ↓
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Guardian is open-source and self-hostable, so any team can run its own instance.
Setup guide: youtu.be/Tr_FRh6QZuc
Docs: docs.miden.xyz/builder/miden-…
Setup guide: youtu.be/Tr_FRh6QZuc
Docs: docs.miden.xyz/builder/miden-…
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Private @0xMiden accounts keep only a commitment onchain. So how do @joinbread multisig cosigners stay in sync?
Guardian stores & validates state deltas offchain and cosigns the transaction as an independent check the ZK proof requires. It can’t move funds alone.
See it live ↓
Guardian stores & validates state deltas offchain and cosigns the transaction as an independent check the ZK proof requires. It can’t move funds alone.
See it live ↓
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Today we’re announcing a strategic partnership with @chainlink
Chainlink CCIP and ACE are now natively embedded across OpenZeppelin tooling, giving institutions and developers one trusted foundation for moving assets and operations onchain.
Chainlink CCIP and ACE are now natively embedded across OpenZeppelin tooling, giving institutions and developers one trusted foundation for moving assets and operations onchain.
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Exploits rarely start and end in the code. Technical flaws, operational gaps, and human behavior compound each other.
Our Security Research Manager Steven Thornton unpacks how they interact, and how to design for it, at @1inch Groundwork in Washington, DC tomorrow at 3:35 PM ET.
Our Security Research Manager Steven Thornton unpacks how they interact, and how to design for it, at @1inch Groundwork in Washington, DC tomorrow at 3:35 PM ET.
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OpenZeppelin Contracts have now powered over $38 trillion in value transferred.
Nearly half of that value moved in the last two years.
The security standard for onchain finance 🔒
Nearly half of that value moved in the last two years.
The security standard for onchain finance 🔒
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Last week during @Sibos, Convergence brought together the people moving finance onchain.
Leaders across banking and capital markets, discussing where tokenization, stablecoins, and settlement go next, with our co-hosts @WisdomTreeOnchn and @dfnsHQ
See you at the next one 🥂
Leaders across banking and capital markets, discussing where tokenization, stablecoins, and settlement go next, with our co-hosts @WisdomTreeOnchn and @dfnsHQ
See you at the next one 🥂
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An onchain identity used to prove eligibility for a regulated asset.
In ONCHAINID v3, it can also hold assets, sign transactions, and manage recovery in one compliant flow.
It's now a modular smart account, upgraded together with @trex_network.
In ONCHAINID v3, it can also hold assets, sign transactions, and manage recovery in one compliant flow.
It's now a modular smart account, upgraded together with @trex_network.
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This month’s edition of The Onchain Brief leads with big news: S&P Global has entered an agreement to acquire OpenZeppelin, bringing together the security foundation of onchain finance and one of the most trusted names in global capital markets.
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OpenZeppelin's Contracts library and development stack are live on @TRONdao.
Scaffold directly from the Contracts Wizard or your AI assistant to:
• Upgrade live contracts without losing state
• Integrate Hardhat, Foundry & TronBox plugins
• Enable passkey sign-ins
Scaffold directly from the Contracts Wizard or your AI assistant to:
• Upgrade live contracts without losing state
• Integrate Hardhat, Foundry & TronBox plugins
• Enable passkey sign-ins
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1 in 3 transactions on major EVM networks run on OpenZeppelin Contracts.
The security standard for onchain finance 🔒
The security standard for onchain finance 🔒
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Today we are announcing that S&P Global has entered an agreement to acquire OpenZeppelin.
Onchain finance is growing from an emerging market into core financial infrastructure, and the standards and rails our team and community built are becoming the rails of global finance. Opens facilitated over $37 trillion in value transferred, with the vast majority of the largest DeFi protocols, blockchain networks, stablecoins and tokenized funds relying on them.
With S&P Global, we expect to accelerate the impact of onchain finance, backed by more than a century of trust in global markets, benchmarks, and risk frameworks.
To our clients and to all the users of OpenZeppelin open source tools:
• OpenZeppelin Contracts and all our open source applications and tools remain open source, free, and publicly maintained on GitHub. Building open source standards stays a core priority.
• Audits, engineering work, and ecosystem programs continue with the same team, brand, quality, and customer experience, with what will be the added benefit of S&P Global's research capacity, market data, and institutional reach.
For the last decade, OpenZeppelin has set the security standard for onchain finance. Today begins a new chapter for that mission, together with one of the most trusted names in global markets.
Read the full announcement: openzeppelin.com/news/spglobal-…
Onchain finance is growing from an emerging market into core financial infrastructure, and the standards and rails our team and community built are becoming the rails of global finance. Opens facilitated over $37 trillion in value transferred, with the vast majority of the largest DeFi protocols, blockchain networks, stablecoins and tokenized funds relying on them.
With S&P Global, we expect to accelerate the impact of onchain finance, backed by more than a century of trust in global markets, benchmarks, and risk frameworks.
To our clients and to all the users of OpenZeppelin open source tools:
• OpenZeppelin Contracts and all our open source applications and tools remain open source, free, and publicly maintained on GitHub. Building open source standards stays a core priority.
• Audits, engineering work, and ecosystem programs continue with the same team, brand, quality, and customer experience, with what will be the added benefit of S&P Global's research capacity, market data, and institutional reach.
For the last decade, OpenZeppelin has set the security standard for onchain finance. Today begins a new chapter for that mission, together with one of the most trusted names in global markets.
Read the full announcement: openzeppelin.com/news/spglobal-…
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Catch our Blockchain Security Researcher Adrià Torralba at @ETHSpain_ in Barcelona on Sept 17 🇪🇸
He's joining the "Who Secures Ethereum" panel to dig into staking economics, node infrastructure, and the security assumptions the whole network rests on.
He's joining the "Who Secures Ethereum" panel to dig into staking economics, node infrastructure, and the security assumptions the whole network rests on.
SPEAKER ANNOUNCEMENT!! 📣
We’re excited to welcome Adrià Torralba, Blockchain Security Researcher at @OpenZeppelin, to ETHSpain 💙
OpenZeppelin is a leading force in blockchain security, providing the tools, research and expertise that help secure some of the most important ETHSpain, Adrià will share insights on smart contract security, blockchain vulnerabilities and building a safer onchain ecosystem.
📍 Barcelona
📅 September 17, 2026
See you at ETHSpain⤵️
luma.com/87on60as
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OpenZeppelin is proud to join the Cosmos Partner Network alongside leading providers helping financial institutions move onchain.
From the standards they build on to the security that protects their systems, we are glad to support the institutions leading this transformation.
From the standards they build on to the security that protects their systems, we are glad to support the institutions leading this transformation.
Today, Cosmos is launching the Cosmos Partner Network with 17 leading industry service providers.
They will help banks and global financial players accelerate digital transformation initiatives through the Cosmos Tokenization Suite and Cosmos digital ledger solutions.
Cosmos provide a complete service suite for tokenized finance that enables financial players to harness new use cases, including:
- Enabling 24/7 payment settlement
- Improving treasury liquidity management
- Unlocking first-to-market use cases like programmable escrow, programmable trade finance, and agentic commerce
Financial institutions and solution providers interested in seamless multi-vendor solutions through the Cosmos Partner Network are welcome to get in touch.
prnewswire.com/news-releases/…
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More than 80% of all DeFi Total Value Locked runs on protocols built with OpenZeppelin Contracts, totaling over $152B.
The security standard for onchain finance 🔒
The security standard for onchain finance 🔒
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New for @SuiNetwork developers: an audited reference implementation for closed-loop payments and loyalty.
Accept stablecoin payments, mint a soulbound loyalty token on each sale, and let customers redeem it later.
Accept stablecoin payments, mint a soulbound loyalty token on each sale, and let customers redeem it later.
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OpenZeppelin Contracts for @CairoLang v4.0 is out 🔒
New token standards and safer transfer handling for @Starknet:
• ERC-6909 multi-token standard, with metadata and supply extensions
• ERC-3156 flash loans via ERC20FlashMint
• SafeERC20 dispatcher for asserted transfers
New token standards and safer transfer handling for @Starknet:
• ERC-6909 multi-token standard, with metadata and supply extensions
• ERC-3156 flash loans via ERC20FlashMint
• SafeERC20 dispatcher for asserted transfers
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ENS resolution now works out of the box in OpenZeppelin UI Builder and Role Manager, and it'll be part of the new tools we have coming too ⚒️
.@OpenZeppelin has integrated ENS to give developers access to the most widely used onchain naming layer as an essential building block for robust apps in both the OpenZeppling UI Builder and Role Manager.
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Compliant rails are what trillions in tokenized real-world assets will run on.
Introducing RWA Wizard 🧙
Generate contracts for regulated RWAs with built-in:
→ Investor eligibility
→ Transfer restrictions
→ Recovery controls
Now supporting @StellarOrg.
Introducing RWA Wizard 🧙
Generate contracts for regulated RWAs with built-in:
→ Investor eligibility
→ Transfer restrictions
→ Recovery controls
Now supporting @StellarOrg.
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How do you enforce compliance on infrastructure designed to be open?
The August edition of The Onchain Brief covers onchain identity, agentic payments security, and how compliance works differently chain by chain.
The August edition of The Onchain Brief covers onchain identity, agentic payments security, and how compliance works differently chain by chain.
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A complete reference deployment for running Guardian on @0xMiden, shown live against OpenZeppelin's own testnet instance.
Full video and docs ↓
youtu.be/Tr_FRh6QZuc
Full video and docs ↓
youtu.be/Tr_FRh6QZuc
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On @0xMiden, account state is private and lives offchain by default. Only a commitment goes onchain.
Coordinating that state across devices and co-signers is Guardian's role.
Here's the full operator guide for running a Guardian instance in production ↓
Coordinating that state across devices and co-signers is Guardian's role.
Here's the full operator guide for running a Guardian instance in production ↓
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We're bringing our security standard to @CantonNetwork, and the first pieces are taking shape.
Now live and open for community feedback:
→ A Daml contracts library with a token standard and settlement logic
→ Four reference implementation designs for common use cases
Now live and open for community feedback:
→ A Daml contracts library with a token standard and settlement logic
→ Four reference implementation designs for common use cases
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The OpenZeppelin Contracts Wizard now runs as an MCP App inside your preferred agent 🤖
Agents can generate a smart contract in seconds. Making sure it's safe is the hard part.
The Wizard loads right in the chat, so what the agent ships is grounded in OpenZeppelin standards.
Agents can generate a smart contract in seconds. Making sure it's safe is the hard part.
The Wizard loads right in the chat, so what the agent ships is grounded in OpenZeppelin standards.
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10 years ago, OpenZeppelin Contracts began as an open source project for a handful of blockchain developers.
We're proud that today it's the backbone of onchain finance: $36T+ in value transferred, trusted by leading protocols and institutions.
Here's to the next ten 🔒
We're proud that today it's the backbone of onchain finance: $36T+ in value transferred, trusted by leading protocols and institutions.
Here's to the next ten 🔒
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OpenZeppelin Move Contracts for Sui v1.5 is live.
What's new:
→ Timelock: delay privileged actions
→ Token Sale: run presales, refund if cancelled
→ Collections: keep data sorted automatically
→ Gaussian math: compute CDF and PDF for option pricing
github.com/OpenZeppelin/c…
What's new:
→ Timelock: delay privileged actions
→ Token Sale: run presales, refund if cancelled
→ Collections: keep data sorted automatically
→ Gaussian math: compute CDF and PDF for option pricing
github.com/OpenZeppelin/c…
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The July edition of The Onchain Brief is out!
This month, we cover agentic payments, digital asset custody integration, and privacy in onchain finance, all through a security lens.
Subscribe to get it in your inbox every month. ↓
openzeppelin.com/newsletter
This month, we cover agentic payments, digital asset custody integration, and privacy in onchain finance, all through a security lens.
Subscribe to get it in your inbox every month. ↓
openzeppelin.com/newsletter
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OpenZeppelin Contracts v5.7 is live 🔒
Explore the new primitives of the library behind $36T+ in onchain value transferred:
• ERC-4337 paymasters: sponsor gas via ERC-20s, signatures, or NFTs
• Crosschain ERC-721 and ERC-1155 bridges, built on ERC-7786
Explore the new primitives of the library behind $36T+ in onchain value transferred:
• ERC-4337 paymasters: sponsor gas via ERC-20s, signatures, or NFTs
• Crosschain ERC-721 and ERC-1155 bridges, built on ERC-7786
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A full set of OpenZeppelin AI tooling for @SuiNetwork Move is here 🤖
→ MCP: feed your agent examples and install lines from OpenZeppelin Contracts for Sui
→ Agent Skills: set up, integrate and review your Move code
mcp.openzeppelin.com
github.com/OpenZeppelin/o…
→ MCP: feed your agent examples and install lines from OpenZeppelin Contracts for Sui
→ Agent Skills: set up, integrate and review your Move code
mcp.openzeppelin.com
github.com/OpenZeppelin/o…
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Onchain vaults settle instantly by default, but many real-world assets move on a slower timeline, following a compliance check or a clearing window.
ERC-7540 extends ERC-4626, the standard behind most onchain vaults, to support both synchronous and asynchronous settlement.
ERC-7540 extends ERC-4626, the standard behind most onchain vaults, to support both synchronous and asynchronous settlement.
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OpenZeppelin Move Contracts v1.4 is live.
Manage your @SuiNetwork app's tokens and access control with new modules 🔐
→ Vesting: schedule token releases with cliffs and custom curves
→ Allowance: delegate shared-vault spending, capped, expiring, or revocable
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Manage your @SuiNetwork app's tokens and access control with new modules 🔐
→ Vesting: schedule token releases with cliffs and custom curves
→ Allowance: delegate shared-vault spending, capped, expiring, or revocable
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New in OpenZeppelin Contracts: a comprehensive set of rules for Claude Code agents contributing to the library processing $36+ trillion 🤖
They capture the conventions, security patterns, and review standards we develop by, so any team can learn from our setup ↓
They capture the conventions, security patterns, and review standards we develop by, so any team can learn from our setup ↓
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We're excited to partner with @trex_network on the next phase of the protocol's growth.
Together, we're advancing the open-source compliance standard $32B+ in tokenized securities already depend on 🦖
Together, we're advancing the open-source compliance standard $32B+ in tokenized securities already depend on 🦖
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The @SuiNetwork trading bot (AMM) reference build supports multiple trading strategies out of the box.
The same module can run at low, medium, or high risk depending on how you configure it.
Full walkthrough ↓
The same module can run at low, medium, or high risk depending on how you configure it.
Full walkthrough ↓
Meet a new starter app on @SuiNetwork: an onchain trading bot (AMM) with real-time quote updates.
This reference build gives you audited, production-ready patterns for the best spread configuration, @DeepBookonSui order management and single-transaction quote refresh (PTB).
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OpenZeppelin x @Zama Confidential Contracts v0.5.0 is live
The confidential RWA toolkit gets new controls 🔐
Limit balances and holder counts, recover tokens, and add custom rules, while keeping data encrypted.
Details ↓
github.com/OpenZeppelin/o…
The confidential RWA toolkit gets new controls 🔐
Limit balances and holder counts, recover tokens, and add custom rules, while keeping data encrypted.
Details ↓
github.com/OpenZeppelin/o…
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OpenZeppelin Move Contracts for @SuiNetwork shipped v1.3
Bring the latest audited foundations to your Sui app:
➝ Rate limiting
➝ Role-based Access Control
➝ DeFi math primitives for AMM swaps and bonding curves
Full changelog ↓
github.com/OpenZeppelin/c…
Bring the latest audited foundations to your Sui app:
➝ Rate limiting
➝ Role-based Access Control
➝ DeFi math primitives for AMM swaps and bonding curves
Full changelog ↓
github.com/OpenZeppelin/c…
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OpenZeppelin is bringing its security standard to @CantonNetwork
We're building a secure contracts library, reference implementations, and developer tooling for Canton's privacy-first ecosystem, engineered for the most critical institutional use cases.
We're building a secure contracts library, reference implementations, and developer tooling for Canton's privacy-first ecosystem, engineered for the most critical institutional use cases.
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We're at @ethconf this week! Stop by our meeting room to learn more about onchain security and how we can help secure your blockchain infrastructure.
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@suidevelopers The starter app ships with a ready-to-use terminal UI for spread configuration and performance tracking.
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Meet a new starter app on @SuiNetwork: an onchain trading bot (AMM) with real-time quote updates.
This reference build gives you audited, production-ready patterns for the best spread configuration, @DeepBookonSui order management and single-transaction quote refresh (PTB).
This reference build gives you audited, production-ready patterns for the best spread configuration, @DeepBookonSui order management and single-transaction quote refresh (PTB).
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On @StellarOrg, OpenZeppelin Contracts secure $551M in total value locked, enabling 89% of all smart contract transactions 💫
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Tokenized treasuries, private credit, and regulated funds often settle over days, a timeline synchronous onchain vaults weren't designed for.
We've merged an implementation of ERC-7540 with support from @tokenizedvault members @centrifuge and @superformxyz to solve this.
We've merged an implementation of ERC-7540 with support from @tokenizedvault members @centrifuge and @superformxyz to solve this.
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@SuiNetwork OpenZeppelin is a proud sponsor of @SuiNetwork's Overflow Hackathon.
If you're building DeFi primitives or payment rails, the Move-over CTF is your warm-up before you ship.
If you're building DeFi primitives or payment rails, the Move-over CTF is your warm-up before you ship.
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Play now or build your own levels and share them with the @suidevelopers community.
moveover.openzeppelin.com
moveover.openzeppelin.com
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Sui developers, put your Move security skills to the test ⛳️
Move-over is an open source, browser-based CTF. Read the vulnerable contract, write your attack logic and return the flag.
Like Ethernaut, but for @SuiNetwork 💧
Move-over is an open source, browser-based CTF. Read the vulnerable contract, write your attack logic and return the flag.
Like Ethernaut, but for @SuiNetwork 💧
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Open standards are how the @ethereum ecosystem moves forward.
We are proud to have collaborated with the @ethereumfndn Platform team to build the Open Intents Framework core components: solver, broadcaster, and APIs.
All open-source and fully audited ↓
openintents.xyz
We are proud to have collaborated with the @ethereumfndn Platform team to build the Open Intents Framework core components: solver, broadcaster, and APIs.
All open-source and fully audited ↓
openintents.xyz
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Last week we announced the OpenZeppelin Continuous Security Program.
Proud to have these teams already running on the most comprehensive security model, treating security as continuous operations, not just point-in-time audits.
@Uniswap @AcrossProtocol @zksync
Proud to have these teams already running on the most comprehensive security model, treating security as continuous operations, not just point-in-time audits.
@Uniswap @AcrossProtocol @zksync
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OpenZeppelin Move Contracts for Sui v1.1 is here 💧
Newly added package: fixed-point math for precise onchain prices, rates and ratios!
Fully audited and production-ready 🔒
Newly added package: fixed-point math for precise onchain prices, rates and ratios!
Fully audited and production-ready 🔒
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Evaluating blockchain network risk is foundational for institutional onchain products 🔒
Our 48-page Technical Risk Assessment provides the structured methodology financial institutions need when selecting blockchain networks for regulatory compliance.
Our 48-page Technical Risk Assessment provides the structured methodology financial institutions need when selecting blockchain networks for regulatory compliance.
We've published OpenZeppelin's Technical Risk Assessment on Blockchain Networks: a structured 6-dimension methodology currently covering Ethereum, Solana, BSC, XRP Ledger, Tron, and Canton.
Get the full 48-page report ↓
openzeppelin.com/news/technical…
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Heading to Miami for @consensus2026? 🌴
Stop by our booth during @SuiNetwork Live to meet the team!
🗓️ May 7 · 9 AM – 4 PM
🔗 Register: luma.com/SuiLive
Stop by our booth during @SuiNetwork Live to meet the team!
🗓️ May 7 · 9 AM – 4 PM
🔗 Register: luma.com/SuiLive
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Accelerate your @SuiNetwork development 🛠️
Our Marketplace Reference Build walkthrough shows production patterns for Sui: object-centric design, capability-based access control, oracle integration without contract calls & more!
Get to production faster with battle-tested code.
Our Marketplace Reference Build walkthrough shows production patterns for Sui: object-centric design, capability-based access control, oracle integration without contract calls & more!
Get to production faster with battle-tested code.
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When account state is private by design, teams need a new way to stay in sync, approve changes and manage access.
OpenZeppelin worked with @0xMiden to build Guardian, a Private State Manager that enables shared accounts, threshold approvals and recovery without custody.
OpenZeppelin worked with @0xMiden to build Guardian, a Private State Manager that enables shared accounts, threshold approvals and recovery without custody.
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Ever wondered what it takes to get an EIP included in Ethereum? Catch up on the recent @EthCC talk by @Amxx.
Watch now 👇
youtube.com/watch?v=SPgb7h…
Watch now 👇
youtube.com/watch?v=SPgb7h…
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