t3rn is live on Rococo

Maciej Baj

Jun 16, 2022

After months of development our team launched t3rn’s Rococo Parachain, t0rn. With this new phase, so many key details of t3rn will be validated, which will be reaffirmed in this blog post.

 

What is Rococo?

Rococo was created and designed strictly for testing parachains functionalities. Parity also intends for Rococo to be a testbed for developing the XCM format, which will be improved with the support from the community of parachain builders.

Our goals

We are now primarily focused on testing out the features needed to trustlessly integrate with all Polkadot-like blockchains. For each Polkadot-like relay chain dedicated component of t3rn’s Circuit, namely Multi Finality Verifier collects the GRANDPA finality proofs that to furtherly decrease the amount of calls are grouped into ranges. To collect the finality proofs from the Polkadot-like relay chain we developed the off-chain component called Grandpa Ranger.


Each of the Parachains of the Relay chain that have already been registered to Circuit must be currently manually registered as an active Gateway, so that t3rn can get the information about its genesis configuration like permitted side effects, value and block types, number of decimals etc.

Side effects

Side effects submitted to Circuit for execution are executed by the second off-chain binary - executors. Executors collect the side effects that Circuit emits and after performing the risk-reward calculation, they can volunteer for Optimistic execution by bonding the insurance. Bonding is atomic per each side effect - multiple side effects coming as part of one cross-chain transaction (Xtx) can be optimistically executed by multiple executors, so that not every executor is required to support all of the foreign currencies that come as part of the Xtx. 

Executors

We envision the future development of executors to be an effort driven by individuals who integrate their executors with their intrinsic resources or API access providing best current exchange rates, therefore being competitive in the open market of executors for t3rn cross-chain side effects. The initial implementation of executors is compatible with all active Parachains of Rococo, allows to send the calls and transfers to selected gateway target and collects the execution from the remote targets for the Circuit to confirm, account the rewards and enact on optimistic insurance bond, that goes back to executioner assuming the execution was correct. 

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Ten weeks after mainnet launch, an update on the progress and growing momentum. The bridge has shown strong reliability, increasing adoption, and deeper integrations across ecosystems — all while maintaining unmatched cost efficiency and full on-chain transparency. Governance and staking are live and evolving, driving community participation and protocol growth. Looking ahead, t3rn is focused on scaling — enhancing bridge performance, advancing AI-powered executors, expanding into new ecosystems like Bitcoin and Solana, and empowering builders to create on top of its cross-chain settlement layer. The first ten weeks mark a solid foundation — the next phase is about accelerating toward broader adoption and long-term sustainability.

Oct 7, 2025

t3rn has integrated with Espresso to deliver fast, secure finality across rollups, advancing its mission of making cross-chain interaction feel like a single unified environment. By standardizing proof data from multiple sources, including Espresso, t3rn ensures contracts can operate smoothly across both EVM and non-EVM ecosystems without custom integration work. The result is more efficient, transparent, and developer-friendly cross-chain execution, paving the way for applications that feel native across multiple environments and marking an important step toward a truly fluid, interoperable rollup network.

Sep 19, 2025

t3rn is introducing the Committee Curve Distribution, a fair and transparent way to reward governance participation. Instead of flat payouts or winner-takes-all, rewards scale along a curve — ensuring top contributors earn more while every committee member receives meaningful incentives. The system runs fully on smart contracts with automated execution, transparency, and strong security. Alongside this, governance rules for Power Users, Ambassadors, and Moderators are being refined, with new tools and proposal options coming soon in the Governance Portal.

Sep 18, 2025

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  • Explore new worlds with t3rn, there's a lot out there.

  • Explore new worlds with t3rn, there's a lot out there.

©2025 t3rn. All rights reserved.

  • Explore new worlds with t3rn, there's a lot out there.

  • Explore new worlds with t3rn, there's a lot out there.

©2025 t3rn. All rights reserved.

  • Explore new worlds with t3rn, there's a lot out there.

  • Explore new worlds with t3rn, there's a lot out there.

©2025 t3rn. All rights reserved.