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EpicChainWasm → EpicChainVM Pipeline

Overview

This repository hosts the comprehensive Rust tooling ecosystem required to compile EpicChain smart contracts to WebAssembly and convert the resulting modules into EpicChainVM XEF artefacts. The legacy in-tree LLVM EpicChainVM backend has been retired in favour of a simpler, more maintainable, Wasm-first workflow that reduces complexity while increasing compatibility.

Why WebAssembly?

WebAssembly (Wasm) provides a universal compilation target that enables:

  • Language Agnostic Development: Write contracts in Rust, C, C++, or any language targeting Wasm
  • Toolchain Maturity: Leverage existing LLVM infrastructure and optimization passes
  • Sandboxed Execution: Built-in security boundaries that complement blockchain security
  • Portability: Run the same compiled contract across different blockchain platforms
  • Ecosystem Integration: Tap into the growing Wasm tooling ecosystem

Pipeline Architecture

The complete transformation pipeline consists of these stages:

┌─────────────────┐
│  Rust Contract  │
│ (epicchain-devpack)│
└────────┬────────┘
         │ cargo build --target wasm32-unknown-unknown
         ▼
┌─────────────────┐
│  Wasm Module    │
│ (.wasm file)    │
└────────┬────────┘
         │ wasm-epicchainvm translator
         ▼
┌─────────────────────────────┐
│  EpicChainVM XEF Artefact   │
│  • XEF bytecode (.xef)      │
│  • Manifest (.manifest.json)│
└─────────────────────────────┘

This toolchain is production-ready and fully compatible with EpicChain mainnet and testnet environments.

Production Readiness Status

All components have undergone rigorous testing and validation:

Metric Status
Automated Tests ✅ 859+ tests across all modules
Platform Support ✅ Linux, macOS, Windows (x86_64, aarch64)
Security Auditing ✅ cargo-audit, cargo-deny, dependency scanning
Code Coverage ✅ >85% coverage with detailed tracking
Performance ✅ Benchmark regression detection
Compatibility ✅ Cross-chain verification complete

Cross-Chain Compilation Support

The toolchain supports cross-chain smart contract compilation from Solana and Move ecosystems, enabling developers to migrate existing contracts or write once and deploy everywhere.

Solana Programs Integration

Compile Solana-compatible Rust contracts using the epicchain-solana-compat compatibility layer, which provides drop-in replacements for Solana's standard library.

Step-by-Step Migration Guide

Step 1: Update Dependencies

Replace Solana's program library with the compatibility layer:

[dependencies]
# Remove solana_program
# solana_program = "1.16"

# Add epicchain-solana-compat
epicchain-solana-compat = { path = "../solana-compat" }

# Optional: Add EpicChain-specific features
epicchain-devpack = { path = "../rust-devpack", optional = true }

Step 2: Adapt Your Code

Update imports to use the compatibility layer:

// Change this:
// use solana_program::{
//     account_info::AccountInfo,
//     pubkey::Pubkey,
//     program_error::ProgramError,
// };

// To this:
use epicchain_solana_compat::{
    account_info::AccountInfo,
    pubkey::Pubkey,
    program_error::ProgramError,
};

Step 3: Build for WebAssembly

# Build your Solana contract to WASM
cargo build --manifest-path contracts/solana-hello/Cargo.toml \
  --target wasm32-unknown-unknown --release

Step 4: Translate to EpicChainVM XEF

# Translate the WASM module to EpicChainVM format
cargo run --manifest-path wasm-epicchainvm/Cargo.toml -- \
  --input contracts/solana-hello/target/wasm32-unknown-unknown/release/solana_hello.wasm \
  --xef build/solana_hello.xef \
  --manifest build/solana_hello.manifest.json \
  --name solana-hello \
  --source-chain solana

Solana API Compatibility Matrix

Solana API epicchain-Solana-Compat Implementation Notes
Pubkey ✅ Full Support 32-byte key, converts to UInt160 with proper endianness
AccountInfo ✅ Full Support Maps to storage operations with ownership tracking
ProgramError ✅ Full Support Complete enum conversion with custom error codes
ProgramResult ✅ Full Support Result type aliasing with automatic conversion
entrypoint! ✅ Full Support Generates proper WASM exports with ABI compatibility
invoke() ✅ Full Support Maps to System.Contract.Call with cross-contract safety
invoke_signed() ✅ Full Support PDA signing simulation via witness checking
next_account_info() ✅ Full Support Iterator pattern with bounds checking
AccountInfo::try_from() ✅ Full Support Safe account deserialization

Syscall Mapping Table

Solana Syscall EpicChainVM Equivalent Gas Cost Estimate
sol_log System.Runtime.Log Low (10-20 gas)
sol_log_data System.Runtime.Notify Medium (50-100 gas)
sol_sha256 EpicChain.Crypto.SHA256 Medium (30-60 gas)
sol_keccak256 EpicChain.Crypto.Keccak256 Medium (30-60 gas)
sol_get_clock_sysvar System.Runtime.GetTime Low (10-20 gas)
sol_get_epoch_schedule System.Blockchain.GetHeight Low (10-20 gas)
sol_invoke System.Contract.Call High (500-5000 gas)
sol_memcpy Native Wasm memory operations Low (1-5 gas per byte)
sol_memcmp Native Wasm memory comparison Low (1-5 gas per byte)
sol_memset Native Wasm memory set Low (1-5 gas per byte)
Account read System.Storage.Get Medium (100-500 gas)
Account write System.Storage.Put Medium (200-1000 gas)

Move Contracts Support (Experimental)

⚠️ Experimental Notice: Move bytecode → WASM lowering is now implemented with control flow, storage-backed resource operations, and ability checks. The coverage is still experimental and does not yet model every Move feature. Use in production with caution.

Move Compilation Pipeline

The Move compilation pipeline involves additional steps:

Move Bytecode (.mv) → Move IR → WebAssembly → EpicChainVM XEF

Basic Compilation Example

# Step 1: Build Move-style Rust contract (using Move patterns)
cargo build --manifest-path contracts/move-coin/Cargo.toml \
  --target wasm32-unknown-unknown --release

# Step 2: Translate to XEF with Move semantics
cargo run --manifest-path wasm-epicchainvm/Cargo.toml -- \
  --input contracts/move-coin/target/wasm32-unknown-unknown/release/move_coin.wasm \
  --xef build/MoveCoin.xef \
  --manifest build/MoveCoin.manifest.json \
  --name MoveCoin \
  --source-chain move \
  --manifest-overlay contracts/move-coin/manifest.overlay.json

Raw Move Bytecode Translation

You can also supply raw Move bytecode (.mv) directly:

cargo run --manifest-path wasm-epicchainvm/Cargo.toml -- \
  --input contracts/move-coin/sources/coin.mv \
  --xef build/MoveCoin.xef \
  --manifest build/MoveCoin.manifest.json \
  --name MoveCoin \
  --source-chain move

This will first run move-epicchainvm to produce WASM and then complete the EpicChainVM translation in a single pipeline.

Move Resource Semantics Mapping

Move's linear resource types are mapped to EpicChain storage with strict semantics:

Move Operation EpicChainVM Implementation Safety Guarantees
move_to<T>(signer, value) System.Storage.Put with capability check Prevents duplicate moves
move_from<T>(address): T System.Storage.Delete after read Linear type enforcement
borrow_global<T>(address): &T System.Storage.Get with immutability Read-only access
borrow_global_mut<T>(address): &mut T System.Storage.Get with mutability Exclusive write access
exists<T>(address): bool Storage existence check No side effects
drop(value: T) Compile-time no-op Consumes value safely

Move Ability Support

Move Ability EpicChainVM Implementation Status
copy Value cloning via deep copy ✅ Implemented
drop Automatic cleanup via scope exit ✅ Implemented
store Persistent storage serialization ✅ Implemented
key Global storage operations ✅ Implemented

See contracts/move-coin/src/lib.rs for a minimal Move-inspired coin example that uses storage-backed balances and witness checks.

Running Cross-Chain Tests

# Solana compatibility tests (26 comprehensive tests)
cargo test --manifest-path solana-compat/Cargo.toml -- --nocapture

# Move translator tests (experimental, 15+ tests)
cargo test --manifest-path move-epicchainvm/Cargo.toml -- --nocapture

# Cross-chain integration tests (9 end-to-end tests)
cargo test --manifest-path wasm-epicchainvm/Cargo.toml cross_chain -- --nocapture

# Build all cross-chain examples
make cross-chain

For the complete technical specification, refer to docs/CROSS_CHAIN_SPEC.md.

Repository Components

Core Components

wasm-epicchainvm - WebAssembly to EpicChainVM Translator

The heart of the toolchain, this Rust CLI/library translates Wasm modules into EpicChainVM bytecode and emits the accompanying XEF+manifest pair. Features include:

  • Complete Wasm instruction set support (integer arithmetic, control flow, memory operations)
  • Automatic optimization (dead code elimination, constant folding, peephole optimizations)
  • Manifest generation with automatic method detection
  • XEF container construction with proper section alignment
  • Source chain compatibility (Solana, Move, native)

rust-devpack - EpicChain Smart Contract SDK

The Rust developer tooling for authoring EpicChain contracts, including:

  • Type system: EpicChainInteger, EpicChainByteString, EpicChainArray, EpicChainMap
  • Runtime stubs: Syscall bindings for blockchain interaction
  • Macros: #[epicchain_event], #[epicchain_safe], epicchain_permission!
  • Storage helpers: Convenient abstractions over raw storage operations
  • Crypto utilities: Hashing, signature verification, key management

contracts/ - Production-Ready Example Contracts

A comprehensive collection of assemble-ready Rust smart-contracts demonstrating various patterns:

Contract Description Features
hello-world Basic EpicChain contract Simple storage, events
xep17-token Fungible token standard Mint, burn, transfer, allowances
xep11-nft Non-fungible token standard Mint, transfer, metadata, royalties
constant-product AMM constant product formula Swap, add/remove liquidity
uniswap-v2 Uniswap V2-style router Multi-hop swaps, flash swaps
staking-rewards Staking rewards pool Stake, unstake, reward calculation
timelock-vault Timelock/vesting vault Time-based releases, governance
flashloan-pool Flashloan pool Borrow/repay in same transaction
multisig-wallet Multi-signature wallet M-of-N approval, batch transactions
escrow Escrow contract Dispute resolution, release conditions
governance-dao DAO implementation Proposal voting, treasury management
oracle-consumer Oracle integration Price feeds, data verification

See contracts/README.md for per-contract entry points and build notes.

Helper Scripts

scripts/build_contract.sh

Helper script that builds a Rust contract to Wasm and invokes the translator in a single step:

# Basic usage
./scripts/build_contract.sh contracts/hello-world

# With custom name
./scripts/build_contract.sh contracts/hello-world my_contract

# With additional translator flags
./scripts/build_contract.sh contracts/hello-world hello_world --debug --verbose

# With source chain specification
SOURCE_CHAIN=solana ./scripts/build_contract.sh contracts/solana-hello

scripts/build_c_contract.sh

Clang-based helper that compiles plain C contracts to Wasm before translating them:

# Basic usage
./scripts/build_c_contract.sh contracts/c-hello

# With optimizations
./scripts/build_c_contract.sh contracts/c-hello -O2

# With custom include paths
./scripts/build_c_contract.sh contracts/c-hello -I./include

scripts/epicchainexpress_deploy.sh

Deployment helper for EpicChainExpress instances:

# Set RPC endpoint (default: http://localhost:50012)
export EPICCHAIN_EXPRESS_RPC=http://localhost:50012

# Deploy contract
./scripts/epicchainexpress_deploy.sh build/HelloWorld.xef build/HelloWorld.manifest.json HelloWorld

# Deploy with additional gas
./scripts/epicchainexpress_deploy.sh build/Token.xef build/Token.manifest.json Token 10000000

# Deploy and initialize
./scripts/epicchainexpress_deploy.sh build/Token.xef build/Token.manifest.json Token 10000000 --init "initialize"

Quick Start Guide

Prerequisites

  1. Install Rust (minimum version 1.70+):

    curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
rustup update

  2. Add WebAssembly target:

    rustup target add wasm32-unknown-unknown

  3. Install build tools (for C contracts):

    # Ubuntu/Debian
sudo apt-get install clang lld

# macOS
brew install llvm

# Windows
# Install LLVM from https://releases.llvm.org/

Step 1: Create Your First Contract

Create a new Rust library:

cargo new --lib my_first_contract
cd my_first_contract

Add dependencies to Cargo.toml:

[package]
name = "my_first_contract"
version = "0.1.0"
edition = "2021"

[lib]
crate-type = ["cdylib"]

[dependencies]
epicchain-devpack = { path = "../rust-devpack" }

[profile.release]
opt-level = "z"
lto = true
codegen-units = 1

Write your contract in src/lib.rs:

use epicchain_devpack::prelude::*;

// Define an event
#[epicchain_event]
pub struct HelloEvent {
    pub sender: EpicChainByteString,
    pub message: EpicChainByteString,
}

// Contract entry point
#[epicchain_safe]
#[no_mangle]
pub fn hello(name: EpicChainByteString) -> EpicChainByteString {
    // Log to blockchain
    Runtime::log(&format!("Hello called with: {}", name));
    
    // Emit event
    let sender = Runtime::get_calling_script_hash();
    HelloEvent {
        sender: sender.to_byte_string(),
        message: name.clone(),
    }.emit();
    
    // Return greeting
    EpicChainByteString::from(format!("Hello, {}!", name))
}

// Storage example
#[epicchain_safe]
#[no_mangle]
pub fn store_value(key: EpicChainByteString, value: EpicChainByteString) {
    let storage = Storage::get_context();
    storage.put(&key, &value);
}

#[epicchain_safe]
#[no_mangle]
pub fn get_value(key: EpicChainByteString) -> EpicChainByteString {
    let storage = Storage::get_context();
    storage.get(&key).unwrap_or_default()
}

Step 2: Build Your Contract

# Using the helper script
../scripts/build_contract.sh . my_contract

# Or manually
cargo build --target wasm32-unknown-unknown --release
cargo run --manifest-path ../wasm-epicchainvm/Cargo.toml -- \
  --input target/wasm32-unknown-unknown/release/my_first_contract.wasm \
  --xef build/my_contract.xef \
  --manifest build/my_contract.manifest.json \
  --name my_contract

Step 3: Deploy to EpicChainExpress

# Start EpicChainExpress (if not already running)
epicchain-express

# Deploy your contract
export EPICCHAIN_EXPRESS_RPC=http://localhost:50012
../scripts/epicchainexpress_deploy.sh build/my_contract.xef build/my_contract.manifest.json my_contract

Step 4: Invoke Your Contract

# Invoke the hello method
epicchain-cli contract invoke \
  --rpc http://localhost:50012 \
  --contract <CONTRACT_HASH> \
  --method hello \
  --param "World" \
  --wallet your_wallet.json

# Store a value
epicchain-cli contract invoke \
  --rpc http://localhost:50012 \
  --contract <CONTRACT_HASH> \
  --method store_value \
  --param "my_key" \
  --param "my_value"

# Retrieve a value
epicchain-cli contract invoke \
  --rpc http://localhost:50012 \
  --contract <CONTRACT_HASH> \
  --method get_value \
  --param "my_key"

Advanced Features

Manifest Metadata Generation

Rust contracts can now embed manifest metadata directly via DevPack macros:

use epicchain_devpack::prelude::*;

// Define events
#[epicchain_event]
pub struct TransferEvent {
    pub from: EpicChainByteString,
    pub to: EpicChainByteString,
    pub amount: EpicChainInteger,
}

#[epicchain_event]
pub struct ApprovalEvent {
    pub owner: EpicChainByteString,
    pub spender: EpicChainByteString,
    pub amount: EpicChainInteger,
}

// Set permissions (which methods can be called by whom)
epicchain_permission!("0xff", ["balanceOf", "transfer", "approve"]);
epicchain_permission!("0x01", ["mint", "burn"]);

// Declare supported standards
epicchain_supported_standards!(["XEP-17", "XEP-6"]);

// Specify trusted contracts
epicchain_trusts!([
    "0x0000000000000000000000000000000000000000",  // Native token
    "0x1234567890123456789012345678901234567890"   // Oracle contract
]);

// Define contract groups
epicchain_groups!([
    {
        pubkey: "03a0e2b8c9f5e6a1b2c3d4e5f6a7b8c9d0e1f2a3b4c5d6e7f8a9b0c1d2e3f4a5b6",
        signature: "0123456789abcdef"
    }
]);

// Safe methods (can be called by anyone)
#[epicchain_safe]
#[no_mangle]
pub fn transfer(to: EpicChainByteString, amount: EpicChainInteger) -> bool {
    // Implementation
}

Each #[epicchain_event] declaration automatically registers the event schema using canonical manifest parameter types (Boolean, Integer, ByteArray, etc.), and the helper macros (epicchain_permission!, epicchain_trusts!, epicchain_supported_standards!) record additional metadata. The translator merges these custom sections with any additional overlay file or CLI flags, so manifests stay in sync without manual JSON edits.

Opcode and Syscall Emitting

The translator understands reserved Wasm import modules for low-level operations:

Syscall Module

extern "C" {
    // Import from syscall module
    #[link(wasm_import_module = "syscall")]
    fn System_Runtime_GetTime() -> u64;
    
    #[link(wasm_import_module = "syscall")]
    fn System_Storage_Get(key_ptr: u32, key_len: u32, value_ptr: u32) -> u32;
}

EpicChain DevPack Module

extern "C" {
    // DevPack-friendly aliases
    #[link(wasm_import_module = "epicchain")]
    fn storage_get(key_ptr: u32, key_len: u32) -> u64;
    
    #[link(wasm_import_module = "epicchain")]
    fn notify(event_ptr: u32, event_len: u32);
}

Opcode Module

extern "C" {
    // Direct opcode access
    #[link(wasm_import_module = "opcode")]
    fn SWAP();
    
    #[link(wasm_import_module = "opcode")]
    fn PUSHINT32(value: i32);
    
    #[link(wasm_import_module = "opcode")]
    fn RAW(byte: u8);
    
    #[link(wasm_import_module = "opcode")]
    fn RAW4(b1: u8, b2: u8, b3: u8, b4: u8);
}

Example WAT form:

(module
  (import "syscall" "System.Runtime.GetTime" (func $get_time (result i64)))
  (import "opcode" "DEPTH" (func $depth))
  (import "opcode" "PUSHINT32" (func $push_i32 (param i32)))
  
  (func (export "entry") (result i64)
    call $depth
    call $get_time))

Translator Capabilities

Complete Feature Implementation

Category Status Details
Core Translation ✅ Complete Full Wasm → EpicChainVM pipeline
Manifest Generation ✅ Complete Automatic method detection, permissions
XEF Construction ✅ Complete Proper section alignment, metadata
Safe Method Detection ✅ Complete In-contract attributes, overlays
Permission Deduplication ✅ Complete Automatic merging, conflict resolution
Method-Token Inference ✅ Complete For System.Contract.Call
Solana Compatibility ✅ Complete Full API support, 26 passing tests
Move Support 🧪 Experimental Resource semantics, control flow
Cross-Chain Tests ✅ Complete 9 integration tests

Wasm Instruction Coverage

Integer Operations

  • Arithmetic: add, sub, mul, div_s, div_u, rem_s, rem_u
  • Bitwise: and, or, xor, shl, shr_s, shr_u, rotl, rotr
  • Comparison: eq, ne, lt_s, lt_u, le_s, le_u, gt_s, gt_u, ge_s, ge_u
  • Conversion: wrap_i64, extend_i32_s, extend_i32_u, extend8_s, extend16_s, extend32_s
  • Bit Counting: clz, ctz, popcnt

Control Flow

  • Structured: block, loop, if, else
  • Branching: br, br_if, br_table
  • Selection: select, typed select
  • Traps: unreachable

Memory Operations

  • Load/Store: load, store, load8_s, load8_u, load16_s, load16_u, load32_s, load32_u
  • Management: memory.size, memory.grow
  • Bulk: memory.fill, memory.copy, memory.init
  • Data Segments: data.drop, passive segments

Table Operations

  • Access: table.get, table.set, table.size, table.grow
  • Bulk: table.fill, table.copy, table.init
  • Elements: elem.drop, passive elements
  • Indirect Calls: call_indirect with bounds checking

Variable Operations

  • Local: local.get, local.set, local.tee
  • Global: global.get, global.set
  • Constants: i32.const, i64.const (optimized to smallest PUSH)

Reference Types

  • Operations: ref.null, ref.func, ref.is_null, ref.eq, ref.as_non_null
  • Tables: funcref tables with full support

Optimization Features

Optimization Status Description
Constant Folding ✅ Compile-time evaluation of constant expressions
Dead Code Elimination ✅ Removal of unreachable instructions
Peephole Optimizations ✅ Local instruction pattern optimization
Immediate Folding ✅ Pushing constants directly when possible
Drop Elimination ✅ Removing redundant DROP instructions
Block Simplification ✅ Flattening nested blocks when safe

Unsupported Features

The following Wasm features are not yet supported and will produce descriptive errors:

  • Floating-point operations (f32, f64 instructions)
  • SIMD instructions (v128 operations)
  • Multi-memory modules (more than one memory)
  • Reference types beyond funcref (externref, anyref)
  • Multiple tables (more than one table)
  • Exception handling (try, catch, throw)

Performance Benchmarks

Translation Speed

Contract Size Wasm Size Translation Time XEF Size
Hello World 8 KB 15 ms 12 KB
XEP-17 Token 45 KB 78 ms 68 KB
Uniswap V2 128 KB 234 ms 192 KB
Complex DAO 256 KB 512 ms 384 KB

Runtime Performance (EpicChainVM)

Operation Wasm Contract Native EpicChain Contract Difference
Integer add 1.2 µs 1.0 µs +20%
Storage read 45 µs 42 µs +7%
Storage write 89 µs 85 µs +5%
SHA256 hash 120 µs 115 µs +4%
Contract call 350 µs 340 µs +3%

Development Workflow

Setting Up Development Environment

# Clone the repository
git clone https://github.com/epicchainlabs/epicchain-devpack-rust.git
cd epicchain-devpack-rust

# Install dependencies
rustup update
rustup target add wasm32-unknown-unknown

# Run all tests
make test

# Build all examples
make examples

# Run cross-chain tests
make test-cross-chain

# Format code
cargo fmt --all

# Lint code
cargo clippy --all-targets --all-features

Running Tests

# Run translator unit tests
cargo test --manifest-path wasm-epicchainvm/Cargo.toml

# Run devpack tests
cargo test --manifest-path rust-devpack/Cargo.toml

# Run contract tests
make test-contracts

# Run integration tests
cargo test --manifest-path integration-tests/Cargo.toml

# Run benchmarks
cargo bench --manifest-path wasm-epicchainvm/Cargo.toml

# Run with logging
RUST_LOG=debug cargo test --manifest-path wasm-epicchainvm/Cargo.toml -- --nocapture

Building Documentation

# Build API documentation
cargo doc --no-deps --document-private-items

# Open in browser
cargo doc --open

# Build formal specification (requires LaTeX)
make -C spec

Continuous Integration

CI runs on every push and pull request, executing:

  1. Linting: cargo fmt, cargo clippy
  2. Security audit: cargo-audit, cargo-deny
  3. Unit tests: All modules on Linux, macOS, Windows
  4. Integration tests: Cross-chain compilation and deployment
  5. Contract tests: All example contracts
  6. Benchmarks: Performance regression detection
  7. Documentation: Build verification

Troubleshooting

Common Issues

"Linker cc not found"

Problem: Missing C compiler for native dependencies.

Solution:

# Ubuntu/Debian
sudo apt-get install build-essential

# macOS
xcode-select --install

# Windows
# Install Visual Studio with C++ support

"Wasm target not installed"

Problem: WebAssembly target missing.

Solution:

rustup target add wasm32-unknown-unknown

"Failed to parse manifest overlay"

Problem: Invalid JSON in manifest overlay file.

Solution: Validate JSON syntax:

cat manifest.overlay.json | jq .

"Method not found in Wasm module"

Problem: Overlay references non-existent export.

Solution: Check available exports:

wasm-objdump -x contract.wasm | grep Export

"Storage access out of bounds"

Problem: Contract trying to access beyond storage limits.

Solution: Check storage key size and implement bounds checking.

Debugging Tips

  1. Enable verbose logging:

    RUST_LOG=debug wasm-epicchainvm --input contract.wasm --output contract.xef

  2. Inspect generated XEF:

    epicchain-cli contract inspect contract.xef

  3. Validate manifest:

    epicchain-cli contract manifest validate contract.manifest.json

  4. Test with EpicChainExpress:

    epicchain-express --debug --trace

Security Considerations

Security Features

  • Memory isolation: Each contract gets isolated memory space
  • Gas metering: Automatic gas calculation for all operations
  • Stack limits: Protection against stack overflow attacks
  • Storage limits: Per-contract storage caps
  • Permission system: Fine-grained method access control
  • Input validation: Automatic bounds checking for array accesses
  • Reentrancy guards: Protection against reentrancy attacks

Auditing

All components are regularly audited with:

  • Static analysis: Clippy, cargo-audit
  • Dynamic analysis: Fuzzing, property testing
  • Formal verification: Model checking for critical components
  • Dependency scanning: cargo-deny for vulnerability detection

Reporting Vulnerabilities

Please report security vulnerabilities to security@epicchain.org following our SECURITY.md policy. Do not disclose vulnerabilities publicly until they have been addressed.

Contributing

We welcome contributions from the community! Please read our Contributing Guidelines to get started.

Quick Contribution Checklist

  • Read CONTRIBUTING.md for development setup
  • Follow the Code of Conduct
  • Check open issues
  • Run tests locally: make test
  • Format code: cargo fmt --all
  • Run linter: cargo clippy --all-targets
  • Update documentation if needed
  • Submit pull request

Development Priorities

  1. High Priority

    • Broaden Wasm instruction coverage (floating-point, SIMD)
    • Complete Move bytecode support
    • Enhance deployment tooling

  2. Medium Priority

    • Surface devpack metadata to manifest generation
    • Add ABI linting and validation
    • Improve error messages and diagnostics

  3. Low Priority

    • Tighten end-to-end validation
    • Add formal verification proofs
    • Optimize translation performance

License

This project is licensed under the MIT License - see the LICENSE file for details.

Support

Acknowledgments

  • WebAssembly specification team
  • Rust community for excellent tooling
  • Solana and Move ecosystems for cross-chain compatibility inspiration
  • All contributors and testers

Built with ❤️ for the EpicChain ecosystem

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A development toolkit to compile and convert EpicChain contracts into WebAssembly and XEF formats.

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