Equilibrium / Selected work / Axelar Solana bridge

Axelar Solana bridge

Solana-side integration for Axelar's General Message Passing network — SVM programs for message verification, token bridging, and GMP relay, with off-chain relayer and prover components.

Completed

equilibriumco/axelar-amplifier-solana equilibriumco/axelar-solana-relayer equilibriumco/axelar-amplifier equilibriumco/axelar-contract-deployments

Client Axelar

Ecosystems Solana · Axelar

Stack Rust · TypeScript

Delivered by Eiger (now Equilibrium)

Overview

Equilibrium implemented the Solana-side integration for Axelar’s General Message Passing (GMP) interoperability network. The work was a suite of Rust SVM programs — message verification, canonical token bridging, governance, and multicall execution — together with off-chain relayer and prover components that drive cross-chain message flow. The core design problem was the security-critical boundary between Solana’s high-throughput runtime and Axelar’s external consensus and proof system.

Deliverables

Rust SVM programs: message verification, canonical token bridge, governance, multicall execution.
Off-chain relayer and prover components.
Deployment and upgrade CLI tooling, contributed to axelar-contract-deployments.
Devnet infrastructure and testing (devnet-amplifier via Terragrunt, with CI/CD).

Technical highlights

Signature verification and state machines implemented in onchain Solana programs.
The security-critical boundary between the Solana runtime and Axelar’s external consensus/proof system.
Deploy and upgrade commands contributed upstream to axelar-contract-deployments.

Audits

The bridge stack was built to be audit-ready and underwent external, third-party security audits during the engagement.

Status