Top 50 Zero Knowledge Proof in Europe

Outdid offers a private identity verification solution that utilizes Zero Knowledge Proofs to authenticate government-issued documents directly on users' devices, eliminating the need for third-party intermediaries. This approach addresses the growing demand for secure user verification while minimizing data liabilities for online platforms and protecting users' sensitive information.

Ethenticator Inc. offers ID-Mask, a zero-knowledge proof technology that allows users to verify personal attributes, such as age and nationality, without disclosing any sensitive information. This solution addresses privacy concerns by enabling secure identity verification while keeping personal data confidential and stored locally in the user's browser.

The startup offers a blockchain-based platform that utilizes zero-knowledge privacy to facilitate on-chain compliance transactions and protocol-agnostic KYC processes. This solution enables clients to access blockchain-backed trading pools while ensuring privacy and regulatory adherence, enhancing liquidity in secondary markets.

<name>Ponos Technology</name> <description>PonosTechnology designs RISC‑V based CryptoCPU processors and post‑quantum cryptographic IP that accelerate zero‑knowledge proof and fully homomorphic encryption workloads. It offers FPGA‑enabled proving infrastructure and hardware‑software co‑design services to deliver high‑throughput, low‑latency verification for blockchain and enterprise security applications. The company’s solutions target cost‑effective, scalable deployment of quantum‑resistant cryptography in ASIC and FPGA platforms.

The startup operates a decentralized identity platform that utilizes cryptography and zero-knowledge proofs to provide verifiable digital credentials. This technology ensures individuals maintain privacy, ownership, and control over their identity during digital onboarding and KYC processes.

The startup develops a blockchain platform utilizing zero-knowledge proofs to ensure transaction privacy and security. This technology enables web services and financial clients to maintain ownership of tradable applications while safeguarding property rights and user privacy.

Aztec has developed a trading protocol for Ethereum that facilitates private transactions on the public blockchain using zero-knowledge proofs. This technology addresses the need for confidentiality in blockchain transactions, allowing users to trade assets without revealing transaction details to the public.

Accountable provides a real-time financial verification standard for institutions dealing with tokenized assets. Their Data Verification Network (DVN) enables continuous, privacy-preserving proof of solvency by connecting onchain and offchain data sources. This infrastructure supports products like Proof of Solvency (PoS) and Vault-as-a-Service (VaaS) to build transparent financial markets.

Swisstronik is a hybrid blockchain platform that enables Web 3.0 and traditional companies to develop KYC, AML, and DPR-compliant applications using zero-knowledge proofs (zk-SNARKs) and Intel SGX for enhanced data privacy. The platform addresses the challenge of regulatory compliance in cross-border transactions while ensuring user data protection and facilitating faster application development.

Vlayer provides a trustless verifiable data infrastructure that utilizes zero-knowledge proofs to integrate on-chain and off-chain data into Solidity smart contracts. This technology enables developers to create secure decentralized applications while ensuring data authenticity and privacy without relying on centralized sources.

Telos offers a third-generation blockchain platform that utilizes the SNARKtor protocol for decentralized recursive proof aggregation, enhancing scalability and efficiency through zero-knowledge technology. This platform addresses issues of high latency, network congestion, and energy consumption, enabling rapid transactions at 15,000 TPS with minimal gas fees.

Keyless provides a biometric authentication solution that utilizes Zero-Knowledge Biometrics™ to verify user identity without storing any biometric data, ensuring privacy and compliance with regulations like GDPR and PSD2. This technology significantly reduces account takeover fraud by up to 73% and operational costs by 81%, while enabling fast authentication in under 300 milliseconds across over 1,000 devices.

Concordium is a public blockchain that integrates an ID Layer at the protocol level, enabling privacy-preserving transactions while ensuring compliance with regulatory standards. This architecture addresses the need for secure digital identity verification in a decentralized environment, facilitating trust and accountability in online interactions.

Kakarot Labs develops a provable Ethereum Virtual Machine (EVM) built on Cairo, enabling efficient and secure execution of smart contracts across Ethereum-equivalent networks. By leveraging Starkware's STWO prover, Kakarot enhances ZK proving performance, addressing the need for lightweight and modular solutions in blockchain verification.

The startup develops a platform that integrates database management and cryptography technologies to enable secure data storage in insecure environments. Its solution facilitates fast and scalable database operations while allowing for safe prototyping of novel cryptographic primitives.

Certifaction offers a privacy-first e-signing solution that utilizes zero document knowledge technology, ensuring that documents are processed locally and encrypted end-to-end, preventing any access to their content. This approach addresses the need for secure digital signatures while maintaining compliance with eIDAS and GDPR regulations, making it suitable for sensitive transactions in various industries.

Provides a regulated, cross-chain DeFi platform for tokenizing, trading, and managing illiquid real-world assets using a zero-knowledge privacy layer. Enables asset owners to reduce reliance on intermediaries while offering retail and institutional investors access to previously inaccessible, cash-flow-generating investments through non-custodial wallets and integrated banking services.

Chakra utilizes a bitcoin restaking technique based on zero-knowledge (ZK) proofs to enhance the security and efficiency of staking operations. This approach allows users to maximize their bitcoin yield while maintaining privacy and minimizing the risk of slashing.

Provides enterprise blockchain-based data security solutions that enable organizations to encrypt, fragment, and distribute data across user-owned multi-cloud environments. This approach protects against cyber threats, ensures business continuity, and maintains data integrity through blockchain-powered proof of record, addressing challenges in data sovereignty and secure collaboration.

HYKER End-to-End Security provides a comprehensive solution for protecting data throughout its entire lifecycle, ensuring security during transfer and at rest. The platform establishes an unbroken chain of data integrity, addressing vulnerabilities that arise from data exposure and unauthorized access.

The startup offers a decentralized consumer discovery and engagement platform that utilizes zkTLS technology and stablecoins to enable privacy-preserving advertising. This platform allows clients to connect with verified users while empowering those users to monetize their engagement, addressing the inefficiencies and privacy concerns in traditional advertising methods.

NordPass is a password manager that utilizes xChaCha20 encryption within a zero-knowledge architecture to securely store and manage passwords, passkeys, and sensitive data. It addresses the challenge of password fatigue and security breaches by providing users with automated password generation, autofill capabilities, and breach monitoring features.

Nym provides a privacy-focused Virtual Private Network (VPN) solution for desktop and mobile devices. This service encrypts user traffic to shield online activity from surveillance and tracking. The core value lies in delivering robust, private internet access across multiple platforms.

Vawlt is a multicloud storage platform that orchestrates data across various cloud providers, ensuring disaster recovery, backup, and ransomware protection through zero-knowledge encryption and fault-tolerant architecture. This solution addresses the risk of data loss and cyberattacks by providing a secure, cost-effective way for organizations to manage their data lifecycle without vendor lock-in.

Light Protocol is a blockchain protocol built on Solana that utilizes ZK compression to significantly reduce on-chain state costs while maintaining security and performance. This technology enables developers to implement private transactions at scale, facilitating complex computations that were previously unfeasible on the Solana network.

QED is a zk-native blockchain protocol that enables high-speed, trustless computation with a capacity of over 1,000,000 transactions per second, utilizing a novel state model for massively parallel transaction proving. It allows Web2 developers to create smart contracts in popular programming languages like JavaScript and Python, addressing the scalability challenges that hinder blockchain adoption.

TACEO provides a protocol for encrypted computation using Multiparty Computation (MPC) and coSNARKs, enabling secure processing of sensitive data across decentralized applications. This technology addresses the need for private shared state in blockchain environments, ensuring data confidentiality while maintaining transparency and integrity.

Nord Security provides a suite of cybersecurity tools, including a VPN, password manager, and identity theft protection, designed to enhance online privacy and security for individuals and businesses. Their solutions address the risks of data breaches, identity theft, and unauthorized access, ensuring secure internet access and protection of sensitive information.

World provides a privacy-preserving network that utilizes World ID for secure human verification and World App for easy access to digital asset management. This platform empowers users by ensuring they retain ownership and control of their personal data while facilitating transactions within a globally inclusive financial ecosystem.

KERU utilizes blockchain technology to create digital souvenirs that provide secure proof of attendance for cultural and tourist sites. This solution enables users to easily obtain and share verifiable digital memorabilia, enhancing visitor engagement while minimizing the environmental impact associated with traditional souvenirs.

The startup develops multi-party computation technology that enables participants to trade currencies while maintaining confidentiality of their positions. This approach minimizes the risk of price slippage and allows investors to access liquidity with limited disclosure of their trading intentions.

The startup develops multi-party computation technology that enables secure and decentralized joint computation of functions while keeping individual inputs private. This platform enhances digital asset security for businesses in the crypto space by maintaining computational complexity and scalability.

Reltime operates a Layer 1 Proof of Authority blockchain that enables fast, secure transactions with zero gas fees, facilitating real-time payments, lending, and asset management. The platform provides a customizable Web3 SuperApp and non-custodial wallet solutions, ensuring users maintain full control over their digital assets while enhancing identity verification and traceability.

Arcium operates a parallelized confidential computing network designed to execute computations over encrypted data. It provides developers with a trustless, verifiable, and efficient framework utilizing Multiparty Computation (MPC) and other cryptographic techniques. This infrastructure enables AI models, blockchain applications, and DePIN systems to derive insights from sensitive data without exposing its contents.

Calimero Network provides a blockchain framework for building peer-to-peer self-sovereign applications that prioritize data ownership and privacy through strong encryption and verified off-chain computing. Users maintain full control over their personal data, deciding who can access it while ensuring secure interactions without reliance on a central authority.

Agora is a citizen network that utilizes Zero Knowledge Proof cryptography and a bridging-based ranking system to facilitate secure, authentic discussions on divisive political and social issues. By enabling participation through biometric verification, Agora fosters meaningful dialogue while ensuring user privacy and mitigating the effects of polarization in democratic societies.

BastionZero provides a Zero Trust infrastructure access platform that brokers SSH, RDP, Kubernetes, and database sessions using identity‑ and context‑based policies without requiring inbound firewall rules. It integrates with SAML, OIDC, and SCIM providers to issue short‑lived credentials and records every session for real‑time monitoring and immutable audit, supporting multi‑cloud and on‑premise environments.

Blocksense is a decentralized protocol that utilizes zero-knowledge rollups and Merkle trees to efficiently publish and verify a wide range of Oracle data feeds in a single transaction. It addresses high costs and slow processes in traditional oracle networks by enabling anyone to create secure oracles and access data feeds on any blockchain.

Mithril Security provides a framework for AI model development that ensures data confidentiality and model integrity through cryptographic proof and secure hardware, such as Trusted Platform Modules (TPMs). This technology addresses the need for provenance traceability in AI, allowing users to verify that models are trained on trustworthy and unbiased datasets.

The startup specializes in cryptographic protocols, focusing on polynomial commitment schemes, proof composition, ZKML, and signature schemes to enhance the security of artificial intelligence applications. By providing robust cryptographic solutions, the company enables clients to implement trustworthy AI systems that protect sensitive data and ensure integrity.

Zero Labs offers a digital platform that enables individuals and businesses to purchase renewable energy and verify their usage through blockchain-based Renewable Energy Certificates (RECs). This system simplifies the process of decarbonization and provides transparent proof of sustainable energy consumption, addressing the complexity and cost of reporting carbon-free operations.

Forkbomb provides a multiplatform cryptographic stack and microservices for digital identity and blockchain interoperability, utilizing post-quantum cryptography and zero-knowledge proofs. The company enables secure data transactions and identity verification across various platforms, addressing the need for robust security in decentralized applications and smart contracts.

Naoris Protocol provides a decentralized security layer utilizing post-quantum cryptography and a decentralized Proof of Security (dPoSec) consensus mechanism to validate device operations in real-time. This technology addresses vulnerabilities in centralized cybersecurity systems by creating a self-protecting trust mesh that eliminates single points of failure across diverse digital environments.

Sismo.io provides a single sign-on solution, Sismo Connect, that enables applications to access user data stored in a secure Data Vault using zero-knowledge proofs for privacy-preserving authentication. This technology allows for selective disclosure of anonymized personal data, facilitating secure interactions between users and applications without compromising user privacy.

The startup offers a data infrastructure platform that enables secure collaboration among multiple parties while maintaining data ownership and privacy. Its technology features smart access rights management and customized integrations, allowing clients to share and compute data without the risk of privacy leakage.

The startup has developed a zero-knowledge-proof system for secure verification of financial transactions, enabling users to perform balances, transfers, and staking with a native token. This platform facilitates the deployment of proof systems that function similarly to smart contracts, ensuring privacy and integrity in financial operations.

The startup develops a decentralized identity stack that enables a compliant know your customer and anti-money laundering onboarding process through a one-click login feature. This technology allows users to selectively share their identity data with trusted transaction partners, facilitating identity verification for fintech companies and expanding their global user base.

Ponta provides a protocol for verifying the authenticity of human users across digital platforms. This system leverages cryptographic proofs to establish verifiable digital identities separate from traditional centralized authentication methods. The core value is enabling trustless, privacy-preserving verification in decentralized applications and online communities.

TransferChain provides secure, private cloud storage and file transfer solutions utilizing client-side, end-to-end encryption and distributed multi-cloud architecture. The platform offers a Drive for storage and sharing, and a Password Manager for credential security, both operating under a zero-knowledge framework. These services ensure data integrity and confidentiality while supporting regulatory compliance and data residency requirements for enterprise users.

Delta provides a settlement control layer for agentic payments, ensuring funds only move when user intent and policy constraints are satisfied. It integrates with existing merchant APIs and payment rails—including cards, ACH, and stablecoins—without requiring merchant-side changes. Platforms can define complex transaction policies and use Delta’s proof engine to enforce verifiable, zero‑knowledge settlement guarantees.