t3rn

t3rn Development Update 3

Maciej Baj

Dec 21, 2021

The t3rn development team has been working hard to prepare our product for new integrations, developer adoption and a public testnet release.

Numerous upgrades have been implemented, such as live data for the XDNS, relayers that allow the circuit to communicate with substrate-based chains, refactoring our Side Effect Protocol, as well as pallet updates.‍

Technical Documentation

A defined onboarding process for developers is being introduced with our new documentation. Our efforts so far have focused on Gateway registration by detailing multiple steps, from installing and importing dependencies to building and submitting transactions. Our documentation will be released in the new year, with topics such as Side Effects, upgrades on Circuit pallets, XDNS and additional features related to integrations all covered.

Pallets update to Polkadot v0.9.12

‍For continuous maintenance and compatibility with forthcoming testnets, we upgraded the Circuit Pallets, i.e. XDNS, Contracts Registry, Execution Delivery.

Relayers for Circuit-Substrate based chains

The first implementation of relayers that communicate Circuit with Substrate-based chains is ready. The implementation is written in JavaScript. Relayers listen to the Side Effects emitted by the Circuit, form the request by the protocol messages and submit them to the target chains. Next, relayers wait for the events confirmation on the target chain and, alongside the storage proof of the corresponding events, pass the data back to the Circuit.

XDNS now works with live data‍

The XDNS component of the t3rn circuit has been finalized and can be used with live data. This goes hand in hand with the activation of the register gateway extrinsic, which will happen soon, allowing for early developer experimentation.

The integration of XDNS has been tested with Westend testnet, with which Circuit can communicate by sending transfers and confirming the associated events inclusion in the Westend chain.

Emitting on-chain Side Effects

Circuit now has the simplified version of Execution Delivery pallet which allows users to submit the side effects directly for execution. The Side Effects Protocol has been refactored to follow the following steps:

1. Validate the arguments of incoming side effects against the target's ABI (address length, value size etc).

2. Create the cross-chain transaction order including the side effects.

3. Wait for relayers to pass the side effects to the target chains and get the required proofs.

4. Implement the API entry for side effects confirmations that checks the execution and inclusion proofs.

‍

Huge strides are being taken at t3rn and momentum behind the project is growing, 2022 promises to be an incredible year.
Be sure to watch updates on our social media and blogs.

👉 Subscribe to our newsletter: Join 15,000 subscribers for exclusive monthly updates and insights, directly from Maciej Baj, founder & CTO of t3rn. - no spam, unsubscribe anytime.

‹ t3rn Takes Part in CoinList Seed 2022

t3rn and Composable Finance Partnership ›

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

Never miss a t3rn.

The t3rn update trusted by 20,000+ and growing. Founder Maciej Baj delivers the most important product updates, ecosystem alpha, and exclusive insights. Once a month, No fluff, just what matters.