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SEISMIC A privacy enabled blockchain
SEISMIC
Company Overview.
Description.
Seismic is a privacy-enabled EVM blockchain founded in 2023 by Lyron Co Ting Keh, headquartered in New York City. The company has built a modified Ethereum Virtual Machine that adds native on-chain privacy through shielded types — developers write standard Solidity with an s prefix (e.g., suint256) to keep balances, transfer amounts, and contract state encrypted from public observers. Seismic powers the complete stablecoin stack: named virtual accounts with local account and routing numbers in 30+ countries, global payments to 150+ countries, a shared KYC network, international card issuance in 130+ countries, local payment rails, custom transaction monitoring, and yield-bearing products. Over 30 financial services companies are building on Seismic, including Brookwell, Cred, Sedona, Prism, DashX, Blend, Via, Vend, and Specie. The testnet launched in May 2026.
Key Infrastructure.
Developers write standard Solidity with an s prefix — suint256, saddress, sbool — and the Seismic compiler encrypts the underlying values using TEE-based cryptography.
Observers see 0x00...0 instead of actual balances and amounts, while authorized parties decrypt state using ECDH-derived shared secrets and AES-GCM decryption through on-chain precompiles.
The standard supports encrypted Transfer and Approval events, signed reads for authenticated balance checking without exposing data to third parties, and "Intelligence Contracts" for compliance-compatible access control that lets regulators verify transactions without revealing user data to the public.
TypeScript developers use seismic-viem (composing with viem for shielded transactions and signed reads) and seismic-react (composing with wagmi for React hooks and providers).
Python developers use seismic-web3 built on web3.py.
Rust developers use seismic-alloy built on the Alloy framework.
All SDKs support the complete shielded transaction lifecycle including TEE key exchange, calldata encryption, and response decryption.
Combined with on-chain Intelligence Contracts, the system enables compliance-compatible access control where regulators and authorized parties can verify transactions and view encrypted data without exposing sensitive customer information to the public blockchain, balancing privacy requirements with regulatory obligations across jurisdictions.
sforge is the shielded Solidity compiler and test runner — developers write tests in Solidity with shielded types and run sforge test locally.
sanvil is the Seismic equivalent of Anvil, providing a local development node with full TEE simulation, encrypted state, and precompile support for cryptographic operations including ECDH key exchange, AES-GCM encryption/decryption, HKDF key derivation, and on-chain RNG.
Additional Features.
General Questions.
Seismic provides a privacy-enabled EVM blockchain infrastructure that powers the complete stablecoin stack for fintechs and neobanks. Developers write standard Solidity with shielded types (like `suint256`) that keep transaction data encrypted from public view. The platform includes virtual accounts in 30+ countries, global payments to 150+ countries, a shared KYC network, international card issuance, and yield-bearing products — all built on Seismic's encrypted blockchain rails that ensure customer financial data stays private while remaining compliant with regulations.
Seismic powers over 30 financial services companies including Brookwell (FDIC-covered stablecoin cash accounts), Sedona (trading-first neobank with card spending), Prism (Vietnam QR payment wallet), DashX (US-India cross-border payments), Blend (treasury-as-a-service), Via (global business accounts), Cred (private credit service), and Specie (SWIFT alternative). Their Builders Program has evaluated over 50 startups.
Seismic Systems Inc. is a financial technology company — not a bank or money services business. Financial services (banking, card issuance) are provided through Seismic's licensed banking partners across the globe. The company is registered in New York and maintains compliance through a shared KYC network and on-chain Intelligence Contracts that enable authorized regulatory access without exposing customer data.
Seismic is its own EVM-compatible L1 blockchain with TEE-based encryption. It supports USDC, USDT, and proprietary shielded tokens via the SRC20 standard. Developers can deploy private ERC20-equivalent tokens using Solidity with an `s` prefix on types. The blockchain features on-chain AES-256-GCM encryption precompiles, ECDH key exchange, and signed reads for authenticated private queries.
