Somnia Chain

One chain. Global resilience, regional speed.

To the people who use it, Somnia is one chain, reached through one unified API. Underneath, the Somnia Global L1 delivers high throughput and global resilience, and Regional Subchains add low-latency, high-throughput execution in the financial centres where trading happens, colocated with other venues. Every part is EVM-compatible, with sub-second finality, sub-cent fees and accounts built for trading.

Read the docs Read the docs

Transactions per second: 1M+; Demonstrated on ERC-20 transfers; Somnia docs
Finality on mainnet: 638 ms; 95th percentile, measured over the last 24 h; status.somnia.network, live
Block time: 100 ms; Average over the last 864K blocks, about a day; Somnia mainnet RPC, live
Blocks finalised: 460.7M; Since mainnet genesis, Sep 2025; Somnia mainnet RPC, live
Cost of a transfer: <$0.0001; 21,000 gas at 6 gwei; Somnia mainnet RPC, live

Validators at mainnet launch, including Google Cloud: 60; Somnia mainnet launch release, Sep 2 2025
Testnet transactions processed before mainnet: 10B+; Somnia mainnet launch release, Sep 2 2025
Chains reachable through the LI.FI integration: 60+; Somnia blog, May 25 2026

Works with

Why Somnia Chain

One chain, built two ways

One chain, one API

Apps, wallets and agents connect to Somnia once. The same unified API reaches the Global L1 and every Regional Subchain, so users never have to pick a chain or switch networks.

Global resilience

The Somnia Global L1 is run by validators around the world, so the network keeps producing blocks and settling trades whatever happens in any one region.

Regional speed

Regional Subchains are low-latency, high-throughput chains placed in trading hubs and colocated with other venues. That puts markets close to major trading venues in Tokyo.

Price gas predictably

IceDB reports deterministic performance, so gas reflects actual work and the base price holds at 6 gwei outside of congestion.

Deploy what you already have

Somnia is EVM compatible. Solidity contracts, standard wallets and familiar tooling work without changes.

Verify every transaction twice

Validators run every transaction through Cuthbert, an independent implementation, and halt on any divergence.

Inside Somnia Chain

A global L1 and Regional Subchains

The Global L1 is the backbone: global, resilient and built for throughput. Regional Subchains sit in the financial centres where trading happens, colocated with other venues for the lowest latency. One unified API reaches them all.

01 · Somnia Global L1

The backbone: high throughput, global resilience

The Somnia Global L1 is an EVM Layer 1 run by validators around the world. MultiStream consensus, compiled EVM execution and the IceDB database give it throughput for the whole network, and its global validator set keeps it running whatever happens in any one region. Assets move between the Global L1 and each Regional Subchain over a bridge.

Network info

Validators around the world, including Google Cloud
1M+ transactions per second, sub-second finality
Assets move between the Global L1 and each Regional Subchain over a bridge
Every transaction double-checked by Cuthbert

Region: Global
Built for: Throughput and resilience
Chain ID: 5031

02 · Tokyo Subchain

Coming soon

Asia-Pacific trading, next to the venues that set the price

The Tokyo Subchain will be a low-latency, high-throughput chain with validators colocated in Tokyo, close to major trading venues in Tokyo. Market makers will quote on Somnia and hedge on those venues with the shortest possible round trip. Assets move between the Global L1 and each Regional Subchain over a bridge. Its testnet is live today.

Validators colocated in Tokyo
Close to major trading venues in Tokyo
Built for order books, market making and arbitrage
Reached through the same unified API as the L1

Region: Asia-Pacific
Colocated with: Tokyo trading venues
Status: Testnet live, mainnet coming soon

03 · New York Subchain

Being explored

A Regional Subchain for the Americas, in New York, is being explored. Further details will follow.

Who it's for

For institutions assessing infrastructure

Defence in depth at the protocol level

Proof-of-stake validators with slashing, an independent shadow implementation and published audits of the L1.

Hacken audit of the L1 and its PBFT consensus
Cuthbert divergence detection on every transaction
Validators including Google Cloud

Audit summary

Accounts built for continuous trading

Smart accounts, session keys and sponsored gas are part of the chain, so every venue and wallet on Somnia can use them.

Authorise once, act continuously

A user approves a session with limits on what it can do. Orders and actions are then submitted under the session without further prompts.

Pre-authorised transaction sequences
Limits set by the user
Built for active traders and agents

Connected to other chains

Assets move to and from Somnia through established interoperability providers, and SOMI is an omnichain token.

Move assets in through established routes

Relay and Stargate are official bridge partners and carry major assets to Somnia, with transfers visible on both chains. Return assets to their origin chain over the same routes.

Relay for fast cross-chain transfers
Stargate, LayerZero-based liquidity bridge
Use bridged assets on Somnia Markets, Somnia Lend or swap to USDso

Bridging guide

For developers

One API, standard EVM endpoints

One unified API reaches the Global L1 and every Regional Subchain. Mainnet chain ID 5031 and testnet chain ID 50312, with public RPC and WebSocket endpoints and the Somnia Explorer. Every part is EVM, so Solidity contracts and tooling work unchanged.

Network info

How it works

What makes Somnia fast

The technology under the Global L1, shared by every Regional Subchain.

01
MultiStream consensus
Every validator publishes its own data chain. A separate consensus chain, running modified PBFT, advances the heads of all data chains at once.
02
Global ordering
A deterministic pseudorandom ordering of the data chains produces a single ordered stream of transactions.
03
Accelerated sequential execution
EVM bytecode is compiled to native code, so hot contracts run at speeds close to hand-written C++.
04
IceDB
A purpose-built database with built-in snapshotting and 15 to 100 nanosecond reads and writes.
05
Advanced compression
Streaming compression and BLS signature aggregation keep bandwidth low as throughput rises.

chain.ts

typescript

import { defineChain } from "viem";

export const somnia = defineChain({
  id: 5031,
  name: "Somnia Mainnet",
  nativeCurrency: { name: "Somnia", symbol: "SOMI", decimals: 18 },
  rpcUrls: {
    default: {
      http: ["https://api.infra.mainnet.somnia.network"],
      webSocket: ["wss://api.infra.mainnet.somnia.network/ws"],
    },
  },
  blockExplorers: {
    default: { name: "Somnia Explorer", url: "https://new.explorer.somnia.network" },
  },
});

Capabilities

What Somnia Chain gives you

Unified API

One API for the Global L1 and every Regional Subchain.

Colocated subchains

Regional Subchains sit beside other venues' matching engines.

EVM compatible

Solidity, standard wallets and existing tooling work unchanged.

Sub-second finality

Transactions are final in under 500 ms on mainnet.

Sub-cent fees

A SOMI transfer costs 0.000126 SOMI at the 6 gwei base price.

Sustained-use discounts

Automatic 70% or 90% base-fee discounts for high-volume senders.

Cuthbert

An unoptimised second implementation that every validator runs to catch execution bugs.

Proof of stake

Validators stake SOMI and are subject to slashing for malicious behaviour.

ERC-4337 EntryPoint v0.7

Standard smart-account infrastructure deployed on mainnet.

EIP-7702

Externally owned accounts can delegate to smart-account code.

Session transactions

Pre-authorised transaction sequences for uninterrupted activity.

Gas sponsorship

Native on-chain sponsorship, coming soon: a venue covers its users' gas.

Self-custodial smart accounts

Permissions and recovery without handing funds to a custodian.

In action

Somnia Chain in production

ResearchOct 1, 2026

Somnia for institutions: custody, validation and audit

A due-diligence view of the Somnia network: who validates it, how assets are held, what has been audited, and which disclosures are public.

Infrastructure7 min read

AnnouncementApr 21, 2026

Somnia, the Agentic L1

Somnia Agents and onchain Reactivity reach mainnet: smart contracts can call APIs, run deterministic AI models and react to events inside consensus.

AI agentsRead on source

ExplainerSep 4, 2026

Why matching belongs onchain

Where an exchange matches orders decides who you have to trust. A look at the trust models in today's order-book venues, and why Somnia puts the matching engine in a smart contract.

Onchain markets7 min read