May 28, 2026

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The Zama Team

Announcing the Developer Program Mainnet Season 2 Winners

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.