ChainSafe

Web3 engineering firm offering protocol development, infrastructure and co-development; maker of Lodestar.

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Facts checked Sep 26, 2026

ChainSafe key facts

Category	Crypto infrastructure for businesses
Platforms	Web
Open source	Yes, Lodestar under Apache 2.0
Company	ChainSafe Systems: protocol, infrastructure and co-development services
Chains	Validators on Celestia, zkVerify, Polkadot, Kusama, ssv.network; ETH via Lido; infra for Ethereum, IPFS, Filecoin
Security audits	Lodestar repo audits folder holds a March 2020 utility libraries review
US availability	Available: terms name no country restrictions

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About

What is ChainSafe?

ChainSafe Systems builds open-source web3 infrastructure and offers protocol development, infrastructure services such as RPC endpoints and staking, and co-development for teams. It maintains Lodestar, a TypeScript Ethereum consensus client released under Apache 2.0.

How ChainSafe works

ChainSafe maintains client software for several networks.

Lodestar is its Ethereum consensus client, written in TypeScript with Rust and Zig native libraries. Forest is a Rust implementation of Filecoin that can validate the chain, serve RPC, generate snapshots and hold FIL in a built-in wallet. Gossamer is a Go framework for running Polkadot nodes. It also built a Rust OP-Supervisor for the OP Stack, which validates cross-chain messages and tracks block safety across the Superchain.

The infrastructure arm at infra.chainsafe.io runs RPC endpoints, testnets, IPFS gateways, Filecoin bootstrap nodes and snapshots, and a Filecoin Calibnet faucet. For staking it operates validators you can delegate to on Celestia, zkVerify, Polkadot, Kusama and ssv.network, and ETH stake reaches it through Lido. On the Canton Network it offers an ERC-20 to CIP-56 bridge for minting Ethereum assets on Canton, and Daml Autopilot, a coding assistant with 3,600+ compiler-validated patterns.

How to start with ChainSafe

To hire ChainSafe for protocol work or co-development, you use the Build with us form on chainsafe.io; there is no self-serve plan or public rate card.
To use its open-source code, Lodestar needs Node.js LTS and pnpm and installs from source, binaries or Docker, with Quickstart scripts for running a beacon node on mainnet or a public testnet.
Delegators stake to ChainSafe validators from their own wallet on each network, or through Lido for ETH.

Risks to know before using ChainSafe

Lodestar is released under Apache 2.0, and its repository keeps an audits folder.
The only report in it is a March 2020 review of utility libraries, so look for newer third-party reviews before you run the client in production.
Delegated stake follows each network's slashing rules, and the infrastructure site shows validator stats without describing any slashing coverage or insurance.
The company says everything it builds is open source, which lets you inspect the code you depend on.

Crypto infrastructure for businessesWeb