feat(tools): add EthProofValidator

tools/EthProofValidator/.dockerignore

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+# Ignore build and output directories
+bin/
+obj/
+out/
+build/
+
+# Ignore IDE-specific files and directories
+.vscode/
+.vs/
+.idea/
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# Ignore source control specific files
+.git/
+
+# Ignore Rust build artifacts
+native-zk-verifier/target/
+
+# Ignore test directories and files
+test/
+
+# Ignore temporary files
+*.tmp
+*.log
+*.bak
+*.swp
+*.*~
+
+# Ignore package manager files (if any)
+packages/
+*.nupkg
+
+# Ignore macOS specific files
+.DS_Store
+
+# Ignore Linux specific files
+*.pyc
+

tools/EthProofValidator/.gitignore

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+*.swp
+*.*~
+project.lock.json
+.DS_Store
+*.pyc
+nupkg/
+
+# Visual Studio Code
+.vscode/*
+!.vscode/settings.json
+
+# Rider
+.idea/
+
+# Visual Studio
+.vs/
+
+# Fleet
+.fleet/
+
+# Code Rush
+.cr/
+
+# User-specific files
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+build/
+bld/
+[Bb]in/
+[Oo]bj/
+[Oo]ut/
+msbuild.log
+msbuild.err
+msbuild.wrn
+
+# Node.js build artifacts
+node_modules/
+package-lock.json
+package.json

tools/EthProofValidator/Dockerfile

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+FROM mcr.microsoft.com/dotnet/sdk:10.0 AS build
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    clang \
+    pkg-config \
+    libssl-dev \
+    ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+ENV PATH="/root/.cargo/bin:${PATH}"
+
+WORKDIR /src
+
+COPY . .
+
+# This will automatically trigger the 'cargo build' via the .csproj target
+RUN dotnet publish EthProofValidator.csproj -c Release -o /app/publish
+
+# Copy the compiled native library to the publish directory
+RUN cp /src/native-zk-verifier/target/release/libnative_zk_verifier.so /app/publish/
+
+FROM mcr.microsoft.com/dotnet/runtime:10.0 AS runtime
+WORKDIR /app
+
+COPY --from=build /app/publish .
+
+ENTRYPOINT ["dotnet", "EthProofValidator.dll"]
+

tools/EthProofValidator/EthProofValidator.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net10.0</TargetFramework>
+    <RootNamespace>EthProofValidator</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+  </ItemGroup>
+
+  <Target Name="BuildRustDependency" BeforeTargets="Build">
+    <Exec Command="cargo build --release" WorkingDirectory="native-zk-verifier" />
+    <ItemGroup>
+      <NativeLibs Include="native-zk-verifier/target/release/libnative_zk_verifier.so" Condition="$([MSBuild]::IsOSPlatform('Linux'))" />
+      <NativeLibs Include="native-zk-verifier/target/release/native_zk_verifier.dll" Condition="$([MSBuild]::IsOSPlatform('Windows'))" />
+      <NativeLibs Include="native-zk-verifier/target/release/libnative_zk_verifier.dylib" Condition="$([MSBuild]::IsOSPlatform('OSX'))" />
+    </ItemGroup>
+    <Copy SourceFiles="@(NativeLibs)" DestinationFolder="$(OutputPath)" />
+  </Target>
+
+</Project>

tools/EthProofValidator/README.md

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+# .NET ETH Proofs ZK Verifier
+
+This project serves as a Proof of Concept for a .NET application designed to validate **Ethereum block proofs** aggregated by [Ethproofs.org](https://ethproofs.org/).
+
+**Ethproofs.org** is a block proof explorer for Ethereum that aggregates data from various zkVM (Zero-Knowledge Virtual Machine) teams. It provides a comprehensive overview of proven blocks and allows users to explore proof metadata.
+
+This application acts as a wrapper for various native ZK verifiers implemented in Rust, enabling .NET applications to verify these cryptographic proofs. It supports multiple proof systems (such as OpenVM, Pico, Zisk, etc.) to validate the execution of Ethereum blocks, contributing to the goal of enabling full ZK light clients and validating Ethereum state with a single proof.
+
+The project demonstrates how to bridge .NET and high-performance Rust-based ZK verifiers to interact with the growing ecosystem of Ethereum zkVMs.
+
+This project specifically focuses on multi-GPU ZK verifiers, as they are currently the only ones that provide Real-Time Proving (RTP).
+
+## Important Disclaimer
+
+This project is strictly connected to [Ethproofs.org](https://ethproofs.org/). Due to the dynamic nature of the Ethereum proof ecosystem, `ethproofs.org` frequently updates its provers and verification keys. Therefore, this project requires active maintenance to ensure compatibility and correct functionality with the latest changes from `ethproofs.org`.
+
+## Project Structure
+
+The repository is composed of two main parts:
+
+-   **`src/`**: The main C# .NET project (EthProofValidator). This contains the application logic, models, and interfaces for interacting with the ZK verifiers.
+-   **`native-zk-verifier/`**: A Rust project that implements the actual ZK verifier logic for different proof systems (e.g., Zisk, OpenVM, Pico, SP1 Hypercube). The .NET application communicates with this Rust library.
+
+## Building and Running
+
+### Prerequisites
+
+-   .NET SDK (e.g., .NET 10)
+-   Rust Toolchain (e.g., `rustup`)
+
+### Build Steps
+
+1.  **Build the .NET Application (includes Rust Verifiers)**:
+    Navigate to the root directory of the .NET project and build the C# application. This process will automatically build the Rust verifier library and copy the necessary native libraries into the output directory.
+
+    ```bash
+    dotnet build
+    ```
+
+### Running the Application
+
+After building both components, you can run the .NET application from the root directory:
+
+```bash
+dotnet run
+```
+
+This will execute the `Program.cs` which should then utilize the compiled Rust verifiers.
+
+## Demo Behavior
+
+The current implementation in `src/Program.cs` is configured to run a demonstration that validates a sequence of Ethereum blocks.
+It defines a `LatestBlockId` validates the preceding `BlockCount` blocks (currently set to 25).
+The application sequentially attempts to fetch and validate the proofs for each of these blocks, printing the elapsed time for each validation to the console.
+
+

tools/EthProofValidator/native-zk-verifier/.gitignore

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+# Rust build artifacts
+debug/
+target/
+Cargo.lock
+
+# WASM-specific build outputs
+verifier/pkg/
+pkg/
+pkg-node/
+pkg-web/
+dist/
+build/
+
+# Node.js dependencies (if using npm/yarn for frontend)
+example/eth_wasm/node_modules/
+example/wasm_example/node_modules/
+node_modules/
+package-lock.json
+yarn.lock
+
+# Environment files
+.env
+.env.local
+
+# OS-specific files
+.DS_Store
+Thumbs.db

tools/EthProofValidator/native-zk-verifier/Cargo.toml

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+[package]
+name = "native-zk-verifier"
+edition = "2021"
+
+[lib]
+crate-type = ["cdylib"] 
+
+[dependencies]
+# Zisk / ZKCLoud
+proofman-verifier = { git = "https://github.com/0xPolygonHermez/pil2-proofman.git", tag = "v0.15.0" }
+# OpenVM
+verify-stark = { git = "https://github.com/openvm-org/openvm.git", branch = "feat/v1-verify-stark", package = "verify-stark" }
+# Pico
+pico-prism-vm = { git = "https://github.com/ethproofs/pico.git", package = "pico-vm", branch = "ethproofs-pico-prism" }
+# SP1
+sp1-verifier = { git = "https://github.com/succinctlabs/hypercube-verifier.git", branch = "ethproofs_demo" }
+
+# Serialization
+serde = { version = "1.0", features = ["derive"] }
+bincode = "1.3"
+
+# Error handling
+anyhow = "1.0"
+
+# Serialization
+bitcode = { version = "0.6.5", default-features = false, features = ["serde"] }
+
+# Optimize for size in release builds
+[profile.release]
+opt-level = 3   # Max speed
+lto = true      # Link Time Optimization (makes code faster)
+strip = true    # Remove symbols to make the .dll smaller
+

tools/EthProofValidator/native-zk-verifier/rust-toolchain.toml

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+[toolchain]
+channel = "nightly"

tools/EthProofValidator/native-zk-verifier/src/lib.rs

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+// SPDX-FileCopyrightText: 2025 Demerzel Solutions Limited
+// SPDX-License-Identifier: LGPL-3.0-only
+
+use std::slice;
+
+mod verifiers;
+use verifiers::{ Verifier, VerifierType, openvm::OpenVmVerifier, pico::PicoVerifier, sp1_hypercube::Sp1HypercubeVerifier, zisk::ZiskVerifier };
+
+#[no_mangle]
+pub extern "C" fn verify(
+    zk_type: u32,
+    proof_ptr: *const u8,
+    proof_len: usize,
+    vk_ptr: *const u8,
+    vk_len: usize,
+) -> i32 {
+    // Check for null pointers from C# safety
+    if proof_ptr.is_null() || vk_ptr.is_null() {
+        return -1;
+    }
+
+    // Wrap the raw pointers in Rust slices (zero-copy)
+    let proof = unsafe { slice::from_raw_parts(proof_ptr, proof_len) };
+    let vk = unsafe { slice::from_raw_parts(vk_ptr, vk_len) };
+
+    let verifier_type = match VerifierType::try_from(zk_type) {
+        Ok(t) => t,
+        Err(_) => return -1,
+    };
+
+    let result = match verifier_type {
+        VerifierType::Zisk => ZiskVerifier::verify(proof, vk),
+        VerifierType::OpenVm => OpenVmVerifier::verify(proof, vk),
+        VerifierType::Pico => PicoVerifier::verify(proof, vk),
+        VerifierType::Sp1Hypercube => Sp1HypercubeVerifier::verify(proof, vk),
+    };
+
+    match result {
+        Ok(true) => 1,
+        Ok(false) => 0,
+        Err(_) => -1,
+    }
+}
+

tools/EthProofValidator/native-zk-verifier/src/verifiers/mod.rs

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+// SPDX-FileCopyrightText: 2025 Demerzel Solutions Limited
+// SPDX-License-Identifier: LGPL-3.0-only
+
+use anyhow::Result;
+
+#[repr(u32)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum VerifierType {
+    Zisk = 0,
+    OpenVm = 1,
+    Pico = 2,
+    Sp1Hypercube = 3,
+}
+
+impl TryFrom<u32> for VerifierType {
+    type Error = anyhow::Error;
+
+    fn try_from(value: u32) -> Result<Self> {
+        match value {
+            0 => Ok(VerifierType::Zisk),
+            1 => Ok(VerifierType::OpenVm),
+            2 => Ok(VerifierType::Pico),
+            3 => Ok(VerifierType::Sp1Hypercube),
+            _ => Err(anyhow::anyhow!("Unknown verifier type: {}", value)),
+        }
+    }
+}
+
+pub trait Verifier {
+    fn verify(proof: &[u8], vk: &[u8]) -> Result<bool>;
+}
+
+pub mod zisk;
+pub mod openvm;
+pub mod pico;
+pub mod sp1_hypercube;

tools/EthProofValidator/native-zk-verifier/src/verifiers/openvm.rs

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+// SPDX-FileCopyrightText: 2025 Demerzel Solutions Limited
+// SPDX-License-Identifier: LGPL-3.0-only
+
+use super::Verifier;
+use anyhow::{Result};
+use verify_stark::{verify_vm_stark_proof, vk::VmStarkVerifyingKey};
+
+pub struct OpenVmVerifier;
+
+impl Verifier for OpenVmVerifier {
+    fn verify(proof: &[u8], vk: &[u8]) -> Result<bool> {
+        // Deserialize the verification key from bitcode bytes
+        let vk: VmStarkVerifyingKey = match bitcode::deserialize(vk) {
+            Ok(vk) => vk,
+            Err(e) => {
+                println!("Failed to deserialize OpenVM verification key: {:?}", e);
+                return Err(anyhow::anyhow!("Failed to deserialize OpenVM verification key: {:?}", e));
+            }
+        };
+
+        // Verify the proof using the OpenVM verify-stark library
+        match verify_vm_stark_proof(&vk, proof) {
+            Ok(()) => Ok(true),
+            Err(e) => {
+                println!("OpenVM verification failed: {:?}", e);
+                return Err(anyhow::anyhow!("OpenVM verification failed: {:?}", e));
+            }
+        }
+    }
+}