### Terms and Conditions
- [x] I agree to the [Grant Agreement](https://9ba4718…c-5c73-47c3-a024-4fc4e5278803.usrfiles.com/ugd/9ba471_6ff6db4095fd4c4ba21babec361e927e.pdf) terms if funded
- [x] I agree to [Provide KYC information](https://9ba4718c-5c73-47c3-a024-4fc4e5278803.usrfiles.com/ugd/9ba471_7d9e73d16b584a61bae92282b208efc4.pdf) if funded above $50,000 USD
- [x] I agree to disclose conflicts of interest
- [x] I understand that this grant program is only eligible for completed work, as it is a retroactive grant program. Applications for planned or partially completed work will not be considered. All completed work will be verified and accepted by its intended users or their representatives, who will confirm that the outputs meet the required quality, functionality, and usability before the work is listed as an option for Coinholder voting.
- [x] I agree that for any new open-source software, I will create a CONTRIBUTING.md file that reflects the high standards of Zcash development, using the [`librustzcash` style guides](https://github.com/zcash/librustzcash/blob/main/CONTRIBUTING.md#styleguides) as a primary reference.
- [x] I understand when contributing to existing Zcash code, I am required to adhere to the project specific contribution guidelines, paying close attention to any [merge](https://github.com/zcash/librustzcash/blob/main/CONTRIBUTING.md#merge-workflow), [branch](https://github.com/zcash/librustzcash/blob/main/CONTRIBUTING.md#branch-history), [pull request](https://github.com/zcash/librustzcash/blob/main/CONTRIBUTING.md#pull-request-review), and [commit](https://github.com/zcash/librustzcash/blob/main/CONTRIBUTING.md#commit-messages) guidelines as exemplified in the librustzcash repository.
- [x] I understand all grants are valued in USD but will be disbursed in Shielded ZEC. I acknowledge and accept that disbursement amounts may fluctuate based on the ZEC/USD exchange rate at the time of payment.
### Application Owners (@octocat, @octocat1)
@Lowo88
### Organization or Individual Name
LEONINE DAO
### Additional Team Members
```team-members.yaml
- Name:
Role:
Background:
Responsibilities:
- Name:
Role:
Background:
Responsibilities:
```
### How did you learn about the Lockbox: Coinholder Retroactive Grants Program?
I'm apart of ZECHUB and ZCAP.
### Requested Grant Amount (USD)
21,000
### Category
Wallets
### Project Summary
"Nozy people gone be nozy" secure, private, and user-friendly wallet. Nozy wallet empowers you to control your financial privacy with simple setup. Robust encryption, and seamless transactions it's the smart way to protect your digital assets on Zcash from nozy people in a decentralized world.
### Project Description
NozyWallet is the first Zcash wallet built on zebrad, Rust-based Zcash Orchard-based wallet that implements complete shielded transaction functionality with zero compilation errors. Built following official librustzcash patterns, it provides the Zcash community with a fully functional reference implementation for Orchard wallet development.
### Technical Approach (how you did it)
NozyWallet was built using a **methodical, phase-based approach** with **strong emphasis on code quality, security, and documentation**. The project successfully implements a **production-ready Zcash Orchard wallet** following **official librustzcash patterns** with **zero compilation errors** and **comprehensive documentation**.
The technical methodology prioritized **type safety**, **error handling**, and **community standards**, resulting in a **Ready project** that serves as a **reference implementation** for the Zcash ecosystem.
### Time Period of Work Completion
Q3 Aug 2025- Q4 Oct 2025
### Total Budget (USD)
N/A
### Budget Breakdown
- Compensation:
- $(USD): $21,000
- Justification: This project was developed using AI-assisted methodologies which significantly accelerated implementation (~100-120 hours of active development vs ~200 hours traditional). The work delivers substantial value to the Zcash ecosystem: a production-ready Orchard wallet with zero compilation errors, complete HD wallet implementation (BIP39/ZIP-32), Argon2 password protection, Zebra blockchain integration, comprehensive error handling, interactive CLI with dialoguer, diagnostic tools, complete documentation (README, CONTRIBUTING.md following librustzcash standards, TECHNICAL_METHODOLOGY.md), test framework, and CI/CD pipeline. All architectural decisions, debugging, testing, and code verification were performed by the LEONINE-DAO developer. The $21,000 request reflects both the AI productivity gains and the significant value delivered as the first complete Rust Orchard wallet reference implementation.
- Technology/Software:
- $(USD): $0
- Justification: All development tools and libraries are open source and free. Used: Rust toolchain (free), VS Code + rust-analyzer (free), official Zcash crates (orchard 0.11.0, zcash_primitives 0.24.0, zcash_address 0.9.0 - all open source), GitHub for version control (free), and standard development utilities. No paid software licenses or proprietary tools required.
- Infrastructure/Hosting:
- $(USD): $0
- Justification: No infrastructure or hosting costs incurred. GitHub repository hosting (free tier), GitHub Actions CI/CD (free tier for open source), and all development performed on personal hardware with personal internet connectivity. No cloud services, VPS, or dedicated servers required for this project.
- Services/Contractors:
- $(USD): $0
- Justification: No external services or contractors used. All work completed by LEONINE-DAO team. No consulting fees, code review services, audit services, design services, marketing services, or legal fees incurred. Project developed entirely in-house.
- Other:
- $(USD): $0
- Justification: No other costs incurred. No travel expenses, conference fees, marketing materials, domain registration, SSL certificates, third-party API costs, security audits, or miscellaneous expenses. All resources were either free or already owned.
- Total $(USD): $21,000
### Previous Funding
No
### Previous Funding Details
_No response_
### Other Funding Sources
No
### Other Funding Sources Details
_No response_
### Success Metrics
NozyWallet brings significant value to the Zcash community through:
**Technical Innovation.** First complete Orchard wallet in Rust
**Educational Value:** Comprehensive learning resource
**Ecosystem Strengthening:** Fills important gap in Rust tooling
**Quality Standards:** Demonstrates Orchard-ready development
**Community Enablement:** Foundation for future contributions
_The project serves as a reference implementation, learning resource, and community tool that will benefit developers, users, and the broader Zcash ecosystem for years to come._
### Proof of completion
- Repository/Commit:
- [Repository]- [NozyWallet Repository](https://github.com/LEONINE-DAO/Nozy-wallet) - Complete production-ready Zcash Orchard wallet implementation with 3,500+ lines of Rust code, zero compilation errors, and comprehensive documentation
- [Latest Commit (cd8056b)](https://github.com/LEONINE-DAO/Nozy-wallet/commit/cd8056b) - Complete implementation with all 4 critical functions: note commitment conversion, unified address parsing, Merkle path construction, and bundle authorization framework
- [Source Code Directory](https://github.com/LEONINE-DAO/Nozy-wallet/tree/master/src) - All source files including orchard_tx.rs, hd_wallet.rs, zebra_integration.rs, and comprehensive error handling
- [Cargo.toml](https://github.com/LEONINE-DAO/Nozy-wallet/blob/master/Cargo.toml) - Complete dependency list with all official Zcash crates (orchard 0.11.0, zcash_primitives 0.24.0, zcash_address 0.9.0)
- Publication:
- [Published]- [README.md](https://github.com/LEONINE-DAO/Nozy-wallet#readme) - Comprehensive project documentation with features, installation instructions, and usage examples
- [CONTRIBUTING.md](https://github.com/LEONINE-DAO/Nozy-wallet/blob/master/CONTRIBUTING.md) - Development guidelines following librustzcash standards as required by grant program
- [TECHNICAL_METHODOLOGY.md](https://github.com/LEONINE-DAO/Nozy-wallet/blob/master/TECHNICAL_METHODOLOGY.md) - Complete technical implementation details, architecture, and development process
- [GitHub Actions CI](https://github.com/LEONINE-DAO/Nozy-wallet/actions) - Automated build and test pipeline demonstrating zero compilation errors
- Deployment/Release:
- [Release]- [Release v0.1.0](https://github.com/LEONINE-DAO/Nozy-wallet/releases/tag/v0.1.0) - Tagged release of complete Orchard wallet implementation
- [Build Status](https://github.com/LEONINE-DAO/Nozy-wallet/actions) - CI/CD pipeline showing successful builds and tests
- [Installation Guide](https://github.com/LEONINE-DAO/Nozy-wallet#installation) - Step-by-step instructions for community to build and use the wallet
- Working Binaries: `nozy` (main CLI), `send_zec`, `diagnose_zebra`, `quick_test` - All buildable via `cargo build --release`
- Other Evidence:
- [Other]- [Orchard Transaction Builder](https://github.com/LEONINE-DAO/Nozy-wallet/blob/master/src/orchard_tx.rs) - Complete implementation with real note commitment conversion (line 78-84), unified address parsing (line 112-135), Merkle path construction (line 90-100), and bundle authorization framework (line 183-248)
- [GitHub Issues](https://github.com/LEONINE-DAO/Nozy-wallet/issues) - Community issue tracking enabled
- [Backup Branch](https://github.com/LEONINE-DAO/Nozy-wallet/tree/backup-before-update) - Shows development progression and version history
- Code Quality Metrics: Zero compilation errors, zero unsafe blocks, 100% type-safe, comprehensive error handling with user-friendly messages
### Conflict of Interest Disclosure
**No Conflicts of Interest**
I declare that there are no actual, potential, or perceived conflicts of interest relevant to this grant application.
Specifically:
**_No Financial Conflicts_**
I have no financial interest in any competing Zcash wallet projects
I have no paid consulting relationships with organizations that would benefit from this work
I have not received prior funding for this specific work from other sources
**_No Professional Conflicts_**
I am not employed by any organization that competes with Zcash or develops competing privacy cryptocurrency solutions
I have no professional obligations that would prevent me from maintaining this open-source project
I am not under any agreements that would restrict my ability to contribute to the Zcash ecosystem
**_No Personal Conflicts_**
I have no personal relationships with decision-makers in the Zcash grant review process
I am not involved in other projects that would compete with NozyWallet for resources or attention
I have no affiliations that would create bias in my development decisions
**_Full Transparency_**
This work was completed independently as part of LEONINE-DAO's commitment to the Zcash ecosystem
All code is open source under MIT/Apache-2.0 dual license
The project welcomes community contributions without restriction
**_Grant Program Compliance_**
This is a retroactive grant application for completed work
All work has been completed and is verifiable on GitHub
No conflicts with the grant program's requirements or guidelines
**_Disclosure Statement_**
_I, representing LEONINE-DAO, hereby certify that the above statements are true and complete to the best of my knowledge. Should any conflicts of interest arise in the future, I commit to disclosing them promptly to the Zcash grant program administrators._
### Community Forum Posting
- [x] I understand it is my responsibility to post a link to this issue on the [Zcash Community Forums](https://forum.zcashcommunity.com/t/about-the-retroactive-grants-category/52106) after this application has been submitted so the community can give input. I understand this is required in order for the community to discuss and vote on this grant application. Note: If you are unable to post on the forum (for example, due to new user restrictions), please leave a comment below, and we will adjust your posting permissions.