A privacy enabled blockchain for fintechs.
Seismic is an EVM blockchain with native on-chain privacy. Write Solidity. Deploy with Foundry. Interact with Viem. The only difference: your users' data stays private.
The difference between a public ERC20 and a private SRC20 is one letter:
The s prefix tells the Seismic compiler to shield the underlying value. Observers see 0x00...0 instead of actual balances and amounts. Everything else — the Solidity syntax, the EVM execution model, the deployment flow — stays exactly the same.
Shielded tokens — ERC20s where balances and transfer amounts are hidden from observers
Confidential DeFi — AMMs and lending protocols where positions, prices, and liquidation thresholds are shielded
Compliant finance — Privacy with built-in access control so regulators can verify without exposing user data
Private voting — On-chain governance where votes are secret until tallied
Already have Rust and the Seismic tools installed?
You just ran shielded contract tests locally. See the full quickstart for next steps.
Understand why Seismic exists
See how it works under the hood
Set up my dev environment
Run my first shielded contract
Build a complete app step by step
Build a shielded ERC20 token
Learn about shielded types
Integrate a frontend
Deploy to testnet
Understand the transaction lifecycle
Run a node
Our documentation assumes some familiarity with blockchain app development. Before getting started, it'll help if you're comfortable with:
If you're new to blockchain app development or need a refresher, we recommend starting out with the CryptoZombies tutorial.
If you might benefit from direct support from the team, please don't hesitate to reach out to dev@seismic.systems. We pride ourselves in fast response time.
You can also check out our X account for the latest updates, or join our Discord community.
// Standard ERC20 — balances visible to everyone
mapping(address => uint256) public balanceOf;
function transfer(address to, uint256 amount) public {
balanceOf[msg.sender] -= amount;
balanceOf[to] += amount;
}// Seismic SRC20 — balances shielded by default
mapping(address => suint256) balanceOf; // uint256 → suint256
function transfer(address to, suint256 amount) public { // uint256 → suint256
balanceOf[msg.sender] -= amount;
balanceOf[to] += amount;
}git clone "https://github.com/SeismicSystems/seismic-starter.git"
cd seismic-starter/packages/contracts
sforge test -vv