w3f · developerfred · Apr 1, 2025 · Apr 3, 2025
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+# Bend-PVM: A Next-Generation Smart Contract Language for PolkaVM
+
+- **Team Name:** bend-pvm
+- **Payment Address:**   DOT/AssetHub address 13eJfzT8u1qKYkFDW6o7Ta19eGi9X8Y74cWLDComEVxbKGMa
+- **[Level]**: 2
+
+## Project Overview
+
+Bend-PVM is a new smart contract programming language specifically optimized for PolkaVM. It combines the familiarity of Solidity with the power and safety of functional programming paradigms to create a secure, efficient, and developer-friendly language for the Polkadot ecosystem.
+
+Our language provides a compelling migration path for Ethereum developers while leveraging the advanced capabilities of PolkaVM's RISC-V architecture and Polkadot's sophisticated resource model.
+
+**Project Website**: [https://bend-pvm.aipop.fun/](https://bend-pvm.aipop.fun/)
+
+### Project Details
+
+The smart contract development space faces several critical challenges:
+- High gas costs limiting complex application development
+- Security vulnerabilities costing billions in exploits
+- Difficult tradeoffs between security and usability
+- Steep learning curves for new blockchain developers
+
+Bend-PVM addresses these challenges by:
+- Implementing a multi-dimensional resource model aligned with Substrate's weight system
+- Incorporating functional programming features that enhance security
+- Maintaining high compatibility with Solidity for easy developer migration
+- Optimizing specifically for the PolkaVM runtime environment
+
+### Ecosystem Fit
+
+Bend-PVM fits perfectly within the Polkadot ecosystem:
+
+1. **Problem solved**: Provides a secure and efficient smart contract language specifically designed for PolkaVM, bridging the gap between Ethereum developers and Polkadot's architecture.
+
+2. **Target audience**: 
+   - Ethereum developers looking to migrate to Polkadot
+   - New blockchain developers seeking a secure yet approachable language
+   - Polkadot parachain teams needing efficient smart contract capabilities
+
+3. **Similar projects**:
+   - ink! - Rust-based smart contracts for Substrate
+   - Solang - Solidity compiler for Substrate
+
+   Bend-PVM differentiates by:
+   - Offering better Solidity compatibility than ink!
+   - Providing stronger functional programming features than Solang
+   - Being specifically optimized for PolkaVM's RISC-V architecture
+
+## Team
+
+### Team members
+- **Lead Developer**: Codingsh
+
+### Contact
+- **Contact Name**: Codingsh
+- **Contact Email**: [email protected]
+
+### Legal Structure
+- Individual contributor
+
+### Team's experience
+I have over 10 years of experience in programming language design and implementation, with a focus on compiler architecture and type systems. My background includes:
+
+- Designing and implementing domain-specific languages for financial applications
+- Contributing to open-source compiler infrastructure projects
+- Developing static analysis tools for smart contract verification
+- Deep understanding of the Polkadot ecosystem and its technical architecture
+
+### Team Code Repos
+- [https://github.com./developerfred/Bend-PVM](https://github.com./developerfred/Bend-PVM)
+- [https://github.com./codingsh](https://github.com./codingsh)
+
+## Development Status
+
+We have completed initial research and design for Bend-PVM, including:
+
+- Language specification draft (available in our GitHub repository: [language_reference.md](https://github.com./developerfred/Bend-PVM/blob/main/docs/language_reference.md))
+- Solidity migration guide (available in our GitHub repository: [solidity_migration_guide.md](https://github.com./developerfred/Bend-PVM/blob/main/docs/solidity_migration_guide.md))
+- Architecture planning document (available in our GitHub repository: [plan.md](https://github.com./developerfred/Bend-PVM/blob/main/plan.md))
+- Prototype lexer and parser components
+- Initial community discussions:
+  - [Polkadot Forum Discussion](https://forum.polkadot.network/t/bend-pvm-revolutionizing-smart-contract-development-for-polkadots-ecosystem/12283)
+  - [Gitcoin Governance Discussion](https://gov.gitcoin.co/t/proposal-bend-pvm-a-revolutionary-smart-contract-language-for-polkavm/20232)
+
+## Development Roadmap
+
+### Overview
+- **Total Estimated Duration**: 6 months
+- **Full-Time Equivalent (FTE)**: 1
+- **Total Costs**: 30,000 USD
+
+### Milestone 1: Language Core and Compiler Frontend
+- **Estimated Duration**: 2 months
+- **FTE**: 1
+- **Costs**: 10,000 USD
+
+| Number | Deliverable | Specification |
+| --- | --- | --- |
+| 0a. | License | Apache 2.0 |
+| 0b. | Documentation | We will provide comprehensive documentation explaining the language design, compiler architecture, and how to use the toolchain. |
+| 0c. | Testing Guide | The code will include unit tests covering all core components. We'll provide instructions for running these tests. |
+| 0d. | Article | We will publish an article introducing Bend-PVM, explaining its benefits, and showcasing simple examples. |
+| 1. | Language Specification | Complete formal specification of the Bend-PVM language, including syntax, type system, and semantics. |
+| 2. | Lexer & Parser | Implementation of the lexer and parser components, converting source code to abstract syntax tree (AST). |
+| 3. | Type Checker | Implementation of the static type system, ensuring type safety during compilation. |
+| 4. | Semantic Analyzer | Implementation of semantic analysis phase, validating program correctness beyond syntax. |
+
+### Milestone 2: Compiler Backend and PolkaVM Integration
+- **Estimated Duration**: 2 months
+- **FTE**: 1
+- **Costs**: 10,000 USD
+
+| Number | Deliverable | Specification |
+| --- | --- | --- |
+| 0a. | License | Apache 2.0 |
+| 0b. | Documentation | Updated documentation covering the compiler backend and code generation process. |
+| 0c. | Testing Guide | Comprehensive tests for the compiler backend, including integration tests with PolkaVM. |
+| 0d. | Article | Technical article detailing how Bend-PVM integrates with PolkaVM and the benefits of this approach. |
+| 1. | IR Generator | Implementation of an intermediate representation (IR) generator, preparing AST for optimization. |
+| 2. | Optimization Pipeline | Implementation of compiler optimizations targeting the PolkaVM environment. |
+| 3. | Code Generator | Implementation of the RISC-V code generator, producing executable bytecode for PolkaVM. |
+| 4. | PolkaVM Integration | Integration with the PolkaVM runtime, including resource model implementation. |
+
+### Milestone 3: Developer Tooling and Documentation
+- **Estimated Duration**: 2 months
+- **FTE**: 1
+- **Costs**: 10,000 USD
+
+| Number | Deliverable | Specification |
+| --- | --- | --- |
+| 0a. | License | Apache 2.0 |
+| 0b. | Documentation | Complete user manual, language reference, and migration guides for Solidity developers. |
+| 0c. | Testing Guide | End-to-end testing guide, including examples of writing and deploying real smart contracts. |
+| 0d. | Article | Article focusing on developer experience and showcasing real-world smart contract examples. |
+| 1. | Standard Library | Implementation of a comprehensive standard library with common data structures and utilities. |
+| 2. | VS Code Extension | Development of a VS Code extension providing syntax highlighting, code completion, and error reporting. |
+| 3. | Build System | Creation of a build system for compiling and deploying Bend-PVM contracts. |
+| 4. | Example Contracts | Development of example contracts showcasing language features and best practices. |
+
+## Future Plans
+
+### Short-term plans (6-12 months)
+- Develop a Solidity-to-Bend-PVM migration tool for automated code conversion
+- Create educational resources to help developers learn Bend-PVM
+- Build a community of early adopters to provide feedback and contribute to the ecosystem
+- Implement additional optimizations for common smart contract patterns
+
+### Long-term plans (12+ months)
+- Develop specialized libraries for DeFi, NFTs, and DAOs
+- Create formal verification tools integrated with the compiler
+- Build a repository of verified, reusable contract components
+- Integrate with parachain development tools and frameworks
+- Potentially expand to other RISC-V based blockchain environments
+
+## Additional Information
+
+### What work has been done so far?
+We have completed the initial research phase, including:
+- Language design and syntax specification
+- Resource model design aligned with Substrate's weight system
+- Prototype lexer and parser implementation
+- Documentation drafts including language reference and migration guide
+- Community engagement through the [Polkadot Forum](https://forum.polkadot.network/t/bend-pvm-revolutionizing-smart-contract-development-for-polkadots-ecosystem/12283) and [Gitcoin Governance](https://gov.gitcoin.co/t/proposal-bend-pvm-a-revolutionary-smart-contract-language-for-polkavm/20232)
+
+### Are there any other projects similar to yours in the Substrate/Polkadot/Kusama ecosystem?
+While ink! and Solang exist as smart contract languages for Substrate, Bend-PVM differentiates itself by:
+1. Being specifically designed for PolkaVM's RISC-V architecture
+2. Offering a hybrid approach that combines Solidity familiarity with functional programming features
+3. Implementing a multi-dimensional resource model that aligns perfectly with Substrate's weight system
+4. Focusing on developer experience and migration path from Ethereum
+
+### Why did you not apply for a grant previously?
+This project was conceptualized recently as a response to the growing interest in PolkaVM and the need for specialized developer tools that can leverage its RISC-V architecture while providing a smooth migration path for Ethereum developers.