Announcing the Developer Program Mainnet Season 2 Winners

May 28, 2026

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The Zama Team

Developer programs are designed to support builders at every stage, from experimentation to production-ready projects. During Mainnet Season 2, builders from around the world shipped real applications on top of the Zama Protocol: confidential finance, prediction markets, consumer apps, and tooling for AI coding agents.

234 submissions came in across three tracks. Fifteen winners. Let’s take a look at what the community has built.

Disclaimer: The winning projects mentioned below are unaudited community projects. Research before connecting your wallet. Third-party apps carry risks.

Builder Track

AttestRail: Confidential Compliance Attestations for Institutional Onchain Finance.

Institutions cannot operate onchain without compliance, and compliance has historically meant exposing the very data institutions are obligated to protect. AttestRail resolves that tension. It is a confidential compliance layer for tokenized RWAs: eligibility checks run on encrypted data, transfers are gated by FHE.select, and balances stay encrypted onchain. The attestations are verifiable. The data behind them stays encrypted under FHE. This is the kind of primitive that makes regulated capital comfortable moving onchain.

Prototype: https://www.attestrail.com
Repository: https://github.com/LevCey/AttestRail

Cipher21: Confidential Blackjack on FHEVM.

Onchain games have a structural problem: if the state is public, there are no secrets, and most card games are nothing but secrets. Cipher21 brings Blackjack fully onchain without giving up the hidden hand. Every card is encrypted onchain, and only the player can decrypt their own hand, while the smart contract deals, scores, and settles without ever seeing the cards in the clear. It is a clean demonstration that provably fair gaming and hidden information are no longer mutually exclusive.

Prototype: https://cipher21.vercel.app/
Repository: https://github.com/manoahLinks/Cipher21

Circux: Confidential Savings Vaults and Contribution Circles.

Rotating savings groups are one of the oldest financial primitives in the world, and they depend on trust between members, not on broadcasting everyone’s balance. Circux brings them onchain without that exposure. Balances are encrypted, individual contributions stay private, and the rules of each circle remain auditable and enforced by the contract. Members get the discipline and transparency of a smart contract with the confidentiality a savings group has always assumed.

Prototype: https://circux-olive.vercel.app/
Repository: https://github.com/Femtech-web/Circux

Covalent: Private Fundraising and Donations.

Giving is personal. A transparent ledger makes it public, exposing how much you gave, and to whom, to anyone who looks. Covalent fixe that. It is a fundraising and donations platform where every contribution amount stays encrypted onchain, while the campaign total remains verifiable. Causes can prove what they raised without exposing who gave what.

Prototype: https://covalent.vercel.app/
Repository: https://github.com/0xNana/covalent

Tessera: A Private Settlement Layer for Tokenized RWAs.

The settlement of real-world assets is moving onchain, but institutions cannot settle large positions on a ledger that broadcasts size, counterparty, and price to the entire market. Tessera is a settlement layer built for exactly that constraint. Institutions swap tokenized RWAs on a public blockchain with settlement that is instant, atomic, and encrypted, the positions and amounts confidential under FHE while finality stays public and verifiable. This is what institutional-grade settlement looks like onchain.

Prototype: https://tessera-web-six.vercel.app/
Repository: https://github.com/martinvibes/Tessera

Zerk: An Encrypted Prediction Market.

Prediction markets leak information by design: every position is visible, which lets the market front-run itself and lets observers infer who believes what. Zerk closes that gap. It is a prediction market on Ethereum Sepolia where both the Yes/No choice and the bet size stay encrypted onchain, so participants express a view without revealing it and without moving the market against themselves. The aggregate resolves; the individual positions never have to.

Prototype: https://zerk-six.vercel.app/
Repository: https://github.com/Akhil-2310/zerk/

zWallet: A Confidential Wallet for ERC-7984 Tokens.

Confidential tokens need a confidential wallet, or the experience falls apart the moment a user wants to actually hold and move them. zWallet is a browser extension built on the Zama Protocol that supports ERC-7984 confidential tokens on Ethereum Mainnet and Sepolia. Users can shield and unshield, send confidential transfers, and keep a private history of their activity, all from a wallet that feels familiar.

Prototype: https://chromewebstore.google.com/detail/fmffdabpjgjomnldbndomkibgcjdfljf
Repository: https://github.com/dordunu1/zwallet-newUI

Bounty Track

This season’s bounty track took aim at the developer experience itself. We asked builders to create skills for AI coding agents, including Claude Code, Cursor, and Codex, that teach those agents to write FHEVM contracts. The premise is simple: if confidentiality is going to become the default on Ethereum, the tools developers reach for every day need to understand FHE natively.

62 submissions came in. Three stood out.

FHEVM-Skill: An FHEVM Skill Bundle for AI Coding Agents.

A coding agent is only as good as what it knows, and most agents know nothing about FHEVM. FHEVM-Skill changes that. It is a skill bundle, current to FHEVM v0.11, that drops into Claude Code, Codex CLI, Cursor, Windsurf, and any AGENTS.md-aware agent, so the assistant a developer already uses can scaffold and write confidential contracts. The fastest way to grow the number of FHE builders is to teach the tools they already work in.

Repository: https://github.com/zunmax/fhevm-skil

HOMOMORPH: An AI Agent Skill Stack for Confidential dApps.

HOMOMORPH takes the same idea and pushes it up to the application layer. It is a skill stack that equips AI agents to build full confidential dApps on the Zama Protocol, not just individual contracts but the surrounding patterns a working application needs. It turns a general-purpose coding agent into one that understands how to ship on Zama.

Repository: https://github.com/tekuuu/homomorph

FHEVM Skill: Correctness-First FHEVM Tooling for Agents.

Teaching an agent to write FHEVM code is one thing; teaching it to write correct FHEVM code is another. This skill is built around correctness. It ships a SKILL.md with 9 references and 6 worked examples, plus a 12-rule linter that drives 15 common FHE anti-patterns down to zero, so agents like Claude, Cursor, and Windsurf produce contracts that hold up. Quality tooling, not just coverage.

Repository: https://github.com/0xE1337/fhevm-skill

Special Bounty Track

This season, Zama collaborated with OpenBuild to run a Special Bounty Track for the APAC builder community. 54 submissions, five winners.

Confidential Derivatives: Onchain Perps and Options, Fully Encrypted.

Derivatives are where transparent ledgers hurt the most, because a visible position is a position that can be hunted. Confidential Derivatives brings the full stack onchain: perpetuals, options, and a central limit order book, with positions, collateral, and strikes all encrypted under FHE.

Traders get the composability of onchain markets without broadcasting their book to every liquidation bot watching the chain.

Prototype: https://confidential-derivatives.vercel.app/
Repository: https://github.com/JFKongphop/confidential-derivatives-zama

Privyields: A Confidential Qualified-Yield Marketplace.

Some yield opportunities are only open to qualified participants, and proving you qualify usually means handing over more than you would like. Privyields separates the two. It uses zeroknowledge proofs to establish eligibility and FHE to keep cUSDC allocation and rewards encrypted, so participants prove they belong without revealing their position. Compliance and confidentiality, in the same product.

Prototype: https://privyields.xyz/
Repository: https://github.com/hellojason3/zama-hackthon

SealPad: Confidential Token Sales.

Token sales run on public rails leak every bid, which invites copying, front-running, and price signaling before a sale even closes. SealPad keeps the entire bid lifecycle encrypted, built on the Zama Protocol, so participants commit without revealing their bid and the sale clears without exposing the order flow. Sealed-bid mechanics, finally enforceable onchain.

Prototype: https://sealpad.vercel.app/
Repository: https://github.com/YanYuanFE/sealpad

ZamaDrop: Encrypted Airdrop Allocations.

Airdrops publish a leaderboard of who got what, which turns a reward into a privacy leak and an invitation to harassment. ZamaDrop changes the default. The total distribution stays public and verifiable, while per-recipient amounts are FHE-encrypted, with the sum provably equal to the published total. Recipients get what they earned without the whole world reading their allocation.

Prototype: https://zamadrop.xyz/
Repository: https://github.com/huaruic/zamadrop

Ztocks: Leveraged Confidential Synthetic Stocks.

Synthetic equities onchain promise global access to stock exposure, but doing it with leverage and any regard for confidentiality has not been viable until now. Ztocks is the first leveraged confidential synthetic stock trading platform on FHEVM. It pairs zero-knowledge identity with FHE execution, so positions stay encrypted while the protocol still enforces eligibility and risk.

Exposure, leverage, and privacy in one venue.

Prototype: https://ztocks.vercel.app/
Repository: https://github.com/Rohitamalraj/Ztocks

What Mainnet Season 2 Showed Us

234 submissions across three tracks. The range is the signal: confidential finance, prediction markets, consumer wallets and apps, institutional settlement, and tooling that teaches AI agents to write FHE contracts. Confidentiality is not a niche feature for a narrow set of applications. It is a foundational requirement for the vast majority of real-world activity that has yet to move onchain. What stands out this season is how far down the stack builders are now reaching: not just applications, but the developer tooling, the wallets, and the settlement rails that confidential applications depend on. The ecosystem is starting to build its own foundations.

Congratulations to every winner, and to every team that shipped something during this developer program. The future of Ethereum is confidential, and you are building it. Rewards for Season 2 will be distributed in cUSDT through the Zama Protocol.

Explore all projects → https://zama.org/developer-hub#previous-winning-projects

Season 3 Is Live

The next season is already underway. Build confidential dApps on the Zama Protocol and earn rewards in cUSDT: Zama Developer Program Mainnet Season 3: Composable Privacy Is the Key.

Additional Links‍

Need help? developer@zama.org

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Privacy is necessary for an open society in the electronic age. Privacy is not secrecy. A private matter is something one doesn't want the whole world to know, but a secret matter is something one doesn't want anybody to know. Privacy is the power to selectively reveal oneself to the world.If two parties have some sort of dealings, then each has a memory of their interaction. Each party can speak about their own memory of this; how could anyone prevent it? One could pass laws against it, but the freedom of speech, even more than privacy, is fundamental to an open society; we seek not to restrict any speech at all. If many parties speak together in the same forum, each can speak to all the others and aggregate together knowledge about individuals and other parties. The power of electronic communications has enabled such group speech, and it will not go away merely because we might want it to.Since we desire privacy, we must ensure that each party to a transaction have knowledge only of that which is directly necessary for that transaction. Since any information can be spoken of, we must ensure that we reveal as little as possible. In most cases personal identity is not salient. When I purchase a magazine at a store and hand cash to the clerk, there is no need to know who I am. When I ask my electronic mail provider to send and receive messages, my provider need not know to whom I am speaking or what I am saying or what others are saying to me; my provider only need know how to get the message there and how much I owe them in fees. When my identity is revealed by the underlying mechanism of the transaction, I have no privacy. I cannot here selectively reveal myself; I must always reveal myself.Therefore, privacy in an open society requires anonymous transaction systems. Until now, cash has been the primary such system. An anonymous transaction system is not a secret transaction system. An anonymous system empowers individuals to reveal their identity when desired and only when desired; this is the essence of privacy.Privacy in an open society also requires cryptography. If I say something, I want it heard only by those for whom I intend it. If the content of my speech is available to the world, I have no privacy. To encrypt is to indicate the desire for privacy, and to encrypt with weak cryptography is to indicate not too much desire for privacy. Furthermore, to reveal one's identity with assurance when the default is anonymity requires the cryptographic signature.We cannot expect governments, corporations, or other large, faceless organizations to grant us privacy out of their beneficence. It is to their advantage to speak of us, and we should expect that they will speak. To try to prevent their speech is to fight against the realities of information. Information does not just want to be free, it longs to be free. Information expands to fill the available storage space. Information is Rumor's younger, stronger cousin; Information is fleeter of foot, has more eyes, knows more, and understands less than Rumor.We must defend our own privacy if we expect to have any. We must come together and create systems which allow anonymous transactions to take place. People have been defending their own privacy for centuries with whispers, darkness, envelopes, closed doors, secret handshakes, and couriers. The technologies of the past did not allow for strong privacy, but electronic technologies do.We the Cypherpunks are dedicated to building anonymous systems. We are defending our privacy with cryptography, with anonymous mail forwarding systems, with digital signatures, and with electronic money.Cypherpunks write code. We know that someone has to write software to defend privacy, and since we can't get privacy unless we all do, we're going to write it. We publish our code so that our fellow Cypherpunks may practice and play with it. Our code is free for all to use, worldwide. We don't much care if you don't approve of the software we write. We know that software can't be destroyed and that a widely dispersed system can't be shut down.Cypherpunks deplore regulations on cryptography, for encryption is fundamentally a private act. The act of encryption, in fact, removes information from the public realm. Even laws against cryptography reach only so far as a nation's border and the arm of its violence. Cryptography will ineluctably spread over the whole globe, and with it the anonymous transactions systems that it makes possible.For privacy to be widespread it must be part of a social contract. People must come and together deploy these systems for the common good. Privacy only extends so far as the cooperation of one's fellows in society. We the Cypherpunks seek your questions and your concerns and hope we may engage you so that we do not deceive ourselves. We will not, however, be moved out of our course because some may disagree with our goals.The Cypherpunks are actively engaged in making the networks safer for privacy. Let us proceed together apace.Onward.Eric Hughes9 March 1993