Zcash is a privacy-preserving cryptocurrency that provides anonymous value transfer using zero-knowledge cryptography. The protocol offers the option to make transactions either shielded, which will be completely anonymous, or transparent, which will be visible on the Zcash blockchain.

Polygon Miden is the Edge Blockchain grants applications the power to scale with public and private transactions. With edge execution and self-custodied state control, users keep full control of their data and transaction details. Miden enables safe smart contract development with Rust and built-in account abstraction, while also minimizing attack surface with native asset storage for user accounts.

Privacy Pool is a protocol that enables anonymous transactions on Ether. It uses zero-knowledge proofs to segregate illicit funds, allowing users to prove compliance without revealing their identity.

Omnera is a crypto card with zero-knowledge privacy on BNB Chain, allowing users to make purchases at merchants worldwide with complete anonymity for every transaction.

Ten is a Layer 2 solution for Ethereum that provides privacy and scalability. It ensures that inputs, contract states, and executions are always encrypted. Obscuro's programmable privacy allows developers to decide what they want to keep private and what they want to make public at a granular level. R3, a global enterprise software firm, incubated Ten.

Canton Network is a public blockchain with institutional-grade privacy that features a highly configurable privacy-preserving mechanism at its core. Its on-chain tokenized assets are massive, and its proven institutional-grade scale synchronizes previously siloed systems with the configurable privacy and control needed to unlock asset liquidity in the tradfi and crypto ecosystems. Governed by the Canton Foundation and with the participation of global financial institutions, Canton enables real-time, secure synchronization and settlement across multiple asset classes on a shared, interoperable infrastructure. Originally developed by Digital Asset, the network is now open-source, powered by its native token, Canton Coin, and supports decentralized governance and collaborative application development.

Zama is a cryptography company building open source homomorphic encryption tools for developers.Homomorphic encryption (FHE) is a technology that enables processing data without decrypting it. This can be used to create private smart contracts on top of public, permissionless blockchains, where only specific users would be able to see the transaction data and contract states.

FLock.io aims to build a decentralized, privacy-preserving solution for Artificial Intelligence. It has proposed a research initiative called Federated Learning Blocks (FLocks for short), which uses blockchain as a coordination platform among data holders to conduct Machine Learning while keeping data local and private. By replacing the central entity that collects data and organizes machine learning with blockchain, FLocks aims to empower users to mine insights from their own data and monetize at their own discretion.

Seismic is a blockchain encrypted at the protocol level with encrypted global state, memory access and data flow. Seismic's protocol ships as a set of sequencers that plug into any chain.

Fhenix is the confidential blockchain powered by fully homomorphic encryption. Through the usage of fhEVM, Fhenix enables Ethereum developers to seamlessly build encrypted smart contracts and perform encrypted computation of data, all while using Solidity and other familiar, easy-to-use tools.

Privacy Cash is a privacy protocol based on Solana that allows users to deposit SOL into a privacy pool and withdraw from the privacy pool to any recipient address.

Monero is an open-source, privacy-oriented cryptocurrency that was launched in 2014. Its blockchain is intentionally configured to be opaque, making transaction details such as the identity of senders and recipients and the amount of each transaction anonymous by disguising the addresses used by participants.

Umbra is the transaction privacy protocol on Solana. Whether users make personal payments, transfers, or transactions, Umbra ensures that their financial flows are private and secure.

Brave is a privacy-focused internet browser that aims to change the digital advertising relationship between customers and advertisers. BAT is the native token of the platform, which is used as a payment mechanism between advertisers, publishers, and users.

Zaïffer is a decentralized platform that enables users to confidentialize any token on any EVM-compatible chain, allowing for private transactions within existing DeFi applications.

Arcium is a parallelized confidential computing network. It provides developers and applications with a trustless, verifiable, and efficient framework to run encrypted computations. Arcium aims to bring confidentiality to every on-chain application and become the global computing network for the decentralized internet. Multiparty computation eXecution Environments (MXEs) are the backbone of the Arcium Network. They combine Multiparty Computations (MPC), Fully Homomorphic Encryption (FHE), Zero-Knowledge Proofs (ZKPs), and more to enable encrypted computations.

Hinkal is a ZK-based solution that provides a private smart contract wallet experience, allowing users to participate in their favorite dApps directly from their private addresses without the need to withdraw assets for obfuscation. Hinkal enables privacy of transactions and assets across core DeFi apps and functions, including trading, farming, staking, and lending through the use of stealth addresses and with high degree of compliance.

Aztec Network is the first private ZK-rollup on Ethereum, enabling decentralized applications to access privacy and scale. Its industry-standard PLONK proving mechanism is used by the leading zero-knowledge scaling projects, ensuring the security of its rollup.

Anoma is an intent-centric architecture, introducing a new paradigm for building infrastructure layers and a new operating system for decentralized applications. Anoma’s intent-centricity introduces novel primitives that allow existing web2.5 dApps to be fully decentralized, such as optimistic and ZK rollups, DEXs, NFT marketplaces, or public goods funding applications like Gitcoin.

Veil Cash is a privacy application leveraging zk-SNARKs on Base L2, enabling verified depositors to achieve privacy and anonymity within a pool of trusted users.

Holonym is a privacy-preserving passport for Web3. It enables users to perform anonymous "KYC" and prevent Sybil attacks. It is also constructing the necessary infrastructure for decentralized wallet recovery.

Manta Network is the multi-modular ecosystem for zero-knowledge (ZK) applications. Manta Atlantic, the fastest ZK L1 chain, brings programmable privacy to web3 through compliant on-chain privacy and identity. Manta Pacific, the unique L2 ecosystem for EVM-native ZK applications, provides a scalable and inexpensive gas-fee environment for ZK applications to deploy simply using Solidity. Together, Manta Atlantic and Manta Pacific deliver an unparalleled experience for the next generation of web3 application development and adoption with the applied usage of zero-knowledge cryptography.

Vanish is a Solana-based privacy trading solution. Whether users want to open positions without signaling or take discreet profits, Vanish offers execution privacy that no other platform can provide.

Aleo is a developer platform for building fully private, scalable, and cost-effective applications. It uses zero-knowledge cryptography to move smart contract execution off-chain, enabling a diverse range of decentralized applications that are both entirely private and can scale up to thousands of transactions per second.

Billions Network is a digital identity verification platform designed to offer a future where humans and AI can trust each other, including Sam Altman’s crypto project, World. The platform, which utilizes zero-knowledge proof tech, seeks to provide a scalable and secure method for verifying both human and AI identities.

Anyone is building the internet-routing DePIN in the world: a modular privacy layer for any application to use seamlessly. Offering low requirements to run a relay and out-of-the-box solutions, Anyone provides a unique SDK that allows coders to connect any app to the network with just two lines of code. Their network management and optimized circuits ensure efficient performance.

Obscura is a privacy layer based on Solana, powered by zk.

Mystiko.Network is the zero-knowledge technology (ZK) layer of Web3 which provides a universal ZK protocol and a ZK software development kit that features scalability, interoperability, and privacy all at once. Mystiko functions as the general ZK layer to all layer 1, layer 2, wallets, cross-chain bridges, decentralized exchanges (DEX) and other decentralized applications (Dapps).

Espresso is a global confirmation layer that provides L2 chains with fast, reliable transaction confirmations backed by BFT consensus. Espresso's confirmation layer can prevent sequencer equivocation, protect against reorgs, and reduce finality risk for solvers in intent-based systems. Its versatility means chains can also use it as a decentralized sequencer and low-cost data availability layer.

Iron Fish is a Layer 1 blockchain aiming to be the universal privacy layer for all of Web3. It uses zero-knowledge proofs (zk-SNARKs) and the highest industry standards for encryption, enabling users to have fully private transactions—a true SSL layer for all blockchains.In March 2025, Base acquired the Iron Fish development team to develop privacy protection primitives for Base. The specific acquisition amount was not disclosed. This acquisition is limited to the Iron Fish team and does not involve the Iron Fish network, tokens or its technology. The Iron Fish project will remain independent and is not affiliated with Coinbase or Base.