t3rn

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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‹ New Marketing team

Development Update 4 ›

We’re happy to announce Lucky Bunny, our NFT PFP drop celebrating community, interoperability, and a bit of luck in the t3rn ecosystem. Inspired by the Lucky Cat and t3rn’s bunny mascot, Lucky Bunnies symbolize curiosity, movement, and connection across chains. Minted on Rari Chain, this drop is a thank-you to the t3rn community, offering simple perks like future allowlists, raffles, and early access. With an accessible mint and proceeds supporting TRN buybacks, Lucky Bunny is about being part of the story — where culture and infrastructure grow together.

Jan 9, 2026

As multichain activity becomes a core part of Web3, simple asset transfers via bridges are no longer enough to support increasingly complex cross-chain workflows. While bridges effectively move assets between chains, they stop short of coordinating multi-step actions, leaving users exposed to partial executions, higher costs, and manual failure handling. t3rn addresses this gap by with cross-chain execution: an outcome-driven, atomic approach where all actions across multiple chains either complete together or fully revert. Rather than managing individual transactions, users define the desired result, and the protocol guarantees execution without leaving funds in unintended states. By operating above bridges and messaging protocols, t3rn provides execution-level interoperability, enabling safer, more reliable multichain applications as blockchain ecosystems continue to fragment and scale.

Dec 18, 2025

t3rn is pausing its committee governance system to pivot from a model that rewarded staked positioning to one that prioritizes active protocol contribution. While the technical infrastructure was successful, the suspension allows the team to restructure governance toward a more sustainable model where rewards are tied to measurable impact and community growth rather than passive participation. Moving forward, engagement will center on an ambassador-led approach that recognizes high-value contributors, while all staked assets remain entirely secure and under user control. This strategic shift ensures that governance resources are directed toward those building the ecosystem's future through clear deliverables and dedicated community leadership.

Dec 16, 2025

Jan 9, 2026

Dec 18, 2025

Jan 9, 2026

Dec 18, 2025

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