The security standard for onchain finance. $38 trillion+ in value transferred secured since 2015 for the institutions and innovators shaping global finance.
Joined August 2016
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OpenZeppelin is now officially a part of S&P Global.
The acquisition we announced in September is finalized. OpenZeppelin’s decade of securing and building the infrastructure onchain finance runs on now meets @SPGlobal's more than a century of helping markets understand risk. Together, we can help institutions and builders move onchain with greater confidence.
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.
• Security audits, secure development work and ecosystem programs continue with the same team, brand, quality and customer experience, now backed by S&P Global’s research capacity, market data and institutional reach.
For the last decade, OpenZeppelin has set the security standard for onchain finance. Now we take it to the scale of global finance.
Read the full announcement: press.spglobal.com/2026-10-2…
Learn how to build a USDT vault on @TRONdao with Hardhat, using TRC-4626 with entry and exit fees.
Our new guide covers where TRON differs from Ethereum: USDT transfers, 6-decimal amounts, address formats and energy instead of gas ↓
docs.openzeppelin.com/tron-c…
OpenZeppelin retweeted
“Encrypted, not anonymous”, a workshop by @OpenZeppelin today on how to build confidential contracts using @zama FHE, and common types of gotchas to look out for to build secure contracts.
Also got to meet companies wanting to use confidential contracts in @lfdecentralized blockchain stacks!
Convergence is coming to DAS London 🇬🇧
Our curated soirée for the leaders moving finance onchain: banks, asset managers, capital markets infrastructure, DeFi protocols, and blockchain technology experts.
📆 Nov 10, 4-7pm GMT
Request a spot ↓
luma.com/convergence-onchain…
This month in The Onchain Brief, October edition:
• OpenZeppelin is now part of S&P Global
• Securing a MiCA euro stablecoin before issuance, with Crédit Agricole CACEIS
• Confidential tokens, now live on Stellar
• Our partnership with Chainlink
Subscribe to The Onchain Brief for monthly updates from OpenZeppelin, and exclusive access to our events ↓
openzeppelin.com/newsletter
We're excited to be supporting @EFDevcon 8 🇮🇳
Find us at the booth to talk all things smart contracts with our engineers.
The team will also be on stage with talks and workshops throughout the week.
@OpenZeppelin is joining Devcon 8 as a supporter!
For over a decade they've helped secure the Ethereum ecosystem through their smart contract libraries that have powered $31T+ in value transferred on Ethereum and its L2s.
Meet the team at their booth in Mumbai, Nov 3-6.
OpenZeppelin retweeted
Will S&P Global start rating crypto projects?
S&P Global just acquired @OpenZeppelin, and its CTO @jalex206 expects the two to combine S&P's risk ratings with OpenZeppelin's security work to set a standard for tokenized assets.
Nothing is formalized yet, he tells @CamiRusso, but the goal is to bring it to market fast.
From @StellarOrg's Meridian in Lisbon.
OpenZeppelin is proud to support @summit_defi again this year 🔒
The more value moves onchain, the clearer it is that advancing open security research is fundamental, and gatherings like DSS keep that work moving.
Meet our team and join our talks in Mumbai, Nov 1–2 🇮🇳
A warm welcome to @OpenZeppelin, joining us as a sponsor of DSS 2026!
Thank you for supporting the people working to make DeFi safer.
See you in Mumbai, 1–2 November.
Tickets: luma.com/9qtxqqxx
ALT OpenZeppelin joins DSS 2026 as a sponsor. Official coloured Z and black wordmark. 1–2 November 2026, Marriott, Mumbai.
OpenZeppelin retweeted
Quantum-safe transactions, priced in cents.
In an open challenge, Falcon-512 verification reached ~$0.023 per transaction.
Participants and their AI agents set 434 records in the challenge from @StarknetFndn and @StarkWareLtd, in collaboration with @OpenZeppelin.
postquantum.provably.fast
Post-quantum security is becoming a real design concern for onchain systems.
We're glad to support @Starknet and @StarkWareLtd on an open challenge advancing post-quantum signature verification, open to people and AI agents alike 🔒
Quantum-safe transactions, priced in cents.
In an open challenge, Falcon-512 verification reached ~$0.023 per transaction.
Participants and their AI agents set 434 records in the challenge from @StarknetFndn and @StarkWareLtd, in collaboration with @OpenZeppelin.
postquantum.provably.fast
OpenZeppelin retweeted
secure private state management is now available and open source, for institutional confidentiality, coordination, and compliance
To operate onchain, organizations need privacy and shared control, without handing over the keys.
OpenZeppelin and @0xMiden designed Guardian to that end: the first non-custodial Private State Manager.
Now live as Miden opens to its early partners.
Read the story ↓
openzeppelin.com/customer-st…
To operate onchain, organizations need privacy and shared control, without handing over the keys.
OpenZeppelin and @0xMiden designed Guardian to that end: the first non-custodial Private State Manager.
Now live as Miden opens to its early partners.
Read the story ↓
openzeppelin.com/customer-st…
OpenZeppelin retweeted
S&P Global has completed its acquisition of OpenZeppelin, the security standard for onchain finance.
The transaction complements S&P Global’s risk assessment capabilities in digital asset markets and brings OpenZeppelin's deep expertise in onchain ecosystem development, enhancing its ability to create the next generation of onchain security assessments and benchmarks, and deliver essential intelligence as capital markets transition onchain.
Read the full announcement: okt.to/m3prwQ
OpenZeppelin retweeted
Bringing digital assets into established financial systems requires strong financial governance and regulatory expertise.
Dinesh Dahiya, VP of Finance at @OpenZeppelin, joins Unchained Summit India, bringing experience across digital assets, traditional finance and financial regulation.
Previously, as CFO of KuCoin EU, he led its MiCA authorisation, giving him practical experience in the compliance frameworks shaping digital asset businesses in Europe.
📍 Courtyard by Marriott, Mumbai | 5–6 November 2026
Be part of the discussions shaping institutional adoption and regulatory readiness in digital assets. Get your pass from US$ 149 at unchainedsummit.com/india.
@AeternumInc
#AnEventbyAeternum #UnchainedSummit #DineshDahiya #OpenZeppelin #DigitalAssets
OpenZeppelin retweeted
Confidential Tokens are ready to be deployed on Stellar mainnet 🔒
Add a confidential layer to any SEP-41 token you’ve already issued. Balances and payment amounts are no longer visible onchain.
Shipped in @OpenZeppelin's Stellar Contracts v0.8.0.
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 ↓
Confidential Token is designed for regulated finance: amounts and balances stay private, parties stay visible.
Compliance oversight applies where the rules require it and selective disclosure lets a holder prove a single fact to a third party.
Start testing audited contracts ↓
openzeppelin.com/news/openze…
Also in v0.8:
• Ready-made RWA (@trex_network) compliance rules: country restrictions, holding limits, lockups and transfer limits
• A simpler way to build tokens: choose your features in one line, with type-safe composition built in
github.com/OpenZeppelin/stel…
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 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…