feat(l2): prover backend for OpenVM #5412
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ilitteri
reviewed
Nov 25, 2025
Co-authored-by: Ivan Litteri <[email protected]>
This reverts commit eac58e6.
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Pull request overview
This PR integrates OpenVM as a new prover backend for L1 proving in the L2 system. The implementation adds OpenVM guest programs, backend modules, and KZG cryptographic support using openvm-kzg.
Key changes:
- Adds OpenVM guest program with stateless execution support
- Implements OpenVM prover backend with compressed and Groth16 proof formats
- Integrates
openvm-kzgas an alternative toc-kzgfor KZG operations - Adds CI workflow support for OpenVM backend testing
Reviewed changes
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Show a summary per file
| File | Description |
|---|---|
| crates/l2/prover/src/guest_program/src/openvm/src/main.rs | Implements the OpenVM guest program entry point with input deserialization and execution |
| crates/l2/prover/src/guest_program/src/openvm/Cargo.toml | Defines guest program dependencies with OpenVM v1.4.1 |
| crates/l2/prover/src/guest_program/src/openvm/openvm_init.rs | Auto-generated OpenVM initialization for algebra and ECC support |
| crates/l2/prover/src/guest_program/src/openvm/openvm.toml | Configuration for OpenVM VM including supported curves and cryptographic primitives |
| crates/l2/prover/src/guest_program/build.rs | Adds build logic for compiling OpenVM guest programs |
| crates/l2/prover/src/backend/openvm.rs | Implements OpenVM backend with execute, prove, and batch proof functions |
| crates/l2/prover/src/backend/mod.rs | Registers OpenVM as a new backend option |
| crates/l2/prover/src/lib.rs | Integrates OpenVM backend into prover's main execution flow |
| crates/common/crypto/kzg.rs | Adds OpenVM-KZG support with conditional compilation for different KZG implementations |
| crates/common/crypto/Cargo.toml | Adds openvm-kzg dependency |
| .github/workflows/pr-main_l2_prover.yaml | Adds CI job for OpenVM backend testing |
| crates/l2/prover/Cargo.toml | Adds OpenVM SDK and related dependencies |
| crates/vm/levm/Cargo.toml | Adds openvm feature flag |
| crates/vm/Cargo.toml | Adds openvm feature flag propagation |
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ilitteri
approved these changes
Nov 26, 2025
avilagaston9
approved these changes
Nov 27, 2025
github-merge-queue bot
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Nov 27, 2025
an OpenVM backend was added for ethrex-prover in lambdaclass/ethrex#5412. This PR adds supports to use it with ethrex-replay --------- Co-authored-by: ilitteri <[email protected]> Co-authored-by: ilitteri <[email protected]> Co-authored-by: Ivan Litteri <[email protected]>
github-merge-queue bot
pushed a commit
to lambdaclass/ethrex-replay
that referenced
this pull request
Nov 27, 2025
an OpenVM backend was added for ethrex-prover in lambdaclass/ethrex#5412. This PR adds supports to use it with ethrex-replay --------- Co-authored-by: ilitteri <[email protected]> Co-authored-by: ilitteri <[email protected]> Co-authored-by: Ivan Litteri <[email protected]>
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Motivation
Integrates OpenVM as a new prover backend. For now it only supports L1 proving, until we can implement blob verification using
openvm-kzg.Currently proving is slow as we didn't yet use the guest libraries/precompiles for crypto primitives.
L2 block proving is not supported for now. The issue blocking this is that openvm-kzg does not support blob KZG proof verification.
Description
openvm-kzgbecause of the guest incompatibility withc-kzgandkzg-rs.