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Smart contracts,
made smarter

Composable smart contract hosting
with interoperable, multi-chain execution

Learn more

Smart contracts,
made smarter

Composable smart contract hosting
with fail-safe, interoperable execution

Learn More
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What is t3rn?

t3rn is a hosting platform for smart contracts, that enables trustless, interoperable execution and composable collaboration.
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The t3rn protocol renders smart contracts blockchain agnostic, meaning they can instantly execute on multiple blockchains. Smart contracts can be uploaded as they are and t3rn will host and securely execute them across independent blockchains, breaking the barrier to serving users across industries and blockchain platforms. Executed smart contracts are stored in t3rn’s decentralised repository and can be used by anyone, either for free or on a pay-per-use model that rewards the developer.
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t3rn brings full smart contract interoperability and composable collaboration to the Polkadot ecosystem and beyond.

What does t3rn offer?

Circuit & Gateways for Blockchain projects

  • Plugin interoperability Circuit allows you to open up your decentralised services to a wider blockchain ecosystem.
  • Execute with confidence as t3rn guarantees successful multi-chain execution.
  • Become accessible to a rich pool of composable smart contracts and assets, including: ETH, DOT, KSM and more. 

On-chain contract repository for developers

  • Write your smart contracts in familiar languages like !ink, Solidity, WebAssembly or anything WASM compiled.
  • Use the smart contracts stored in our registry or get paid when developers use your smart contracts.
  • Smart contracts can be uploaded as they are, no rewriting required.  

Open execution platform powered by TRN

  • Collect fees and rewards by becoming a collator, validator or relayer.
  • Earn staking rewards by providing liquidity for multi-chain execution on foreign chains.
  • Receive support from a dedicated Contributors fund.

See how easy we have made
smart contract interoperability

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Copied!

use t3rn::{Access, Circuit, HouseChain, Promise, StoneChain, WoodChain};
#[tern::ink_contract(access=Access::Free, dest=Circuit, private=false)]
fn buy_house(&self) {

Get Started

Features of t3rn

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Interoperable

Connect to the most widely adopted blockchains in the world through our unique Gateway solution
Connect to the most widely adopted blockchains in the world through our unique Gateway solution

The protocol provides uniformed standards of integrating new smart contract and transaction-based blockchains using unique Gateways.
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Fail-Safe

A transaction can be reverted if it fails on any of the blockchains, thus guaranteeing successful execution
A transaction can be reverted if it fails on any of the blockchains, therefore guaranteeing successful execution

Transactions are divided into three phases: execution, revert and commit. Execution changes are escrowed, so that they can be reverted if they fail. The code is then re-executed on the Circuit and results are compared, to ensure success.
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Composable

Use any smart contract stored in our decentralised registry and get paid when people use your code
Use any smart contract stored in our registry and get paid when people use your code

Smart contract code is separated from data and execution is standardised, which makes designing new smart contract systems easier than ever.

What's new?

Explore the blog 
Meet the t3rn Team

Meet the t3rn Team

The core team behind t3rn have been working in the blockchain space for years and offer a fine balance between development, marketing and strategy. We are building a product around what we perceive to be the core principles of blockchain technology, as well as the shortcomings that we can see in this incredible technology today. But this is only the beginning, t3rn is now hiring!

Jacob Kowalewski

Jacob Kowalewski

Feb 24, 2021

Roadmap

STATUS
Completed
In Development
Scheduled
Q4 2020

Gateway

Built with Substrate, a Gateway can be integrated to provide reversible execution of Smart Contracts using Escrow Accounts and providing necessary proofs execution, storage and transfers.
Q3 2021

Circuit

Circuit implements protocol features outlined in whitepaper and works on semi-decentralised PoA premises. This enables building solutions with t3rn, as the on-chain repository and its underlying hosting is implemented.
Q4 2021

Polkadot Parachain

Circuit works on decentralised PoS premises - community members can take active roles as validators and execution agents, t3rn will then be  ready to become a Polkadot Parachain.

The Team

Join Us
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Maciej Baj
Founder & CTO
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Jacob Kowalewski
CSO
Maciej Baj
Maciej Baj
Founder & CTO
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Jacob Kowalewski
Jacob Kowalewski
CSO
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Nick Gregory
Nick Gregory
Technical Advisor
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Urban Osvald
Urban Osvald
Growth Advisor
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Andrew Horbury
Andrew Horbury
Regulatory Advisor
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Contact us

Join the t3rn community or
reach out to the t3rn team.
We're always opens

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