Hello!

It's Maciej, back with another power-packed edition of Multichain Matters. Join me as we explore the newest advancements and delve deep into Polkadot & Ethereum Interactions.

Read time: 3.7 minutes, 4.9 if you are a slower reader ;)

🇵🇱 ETHWarsaw 2023 - Conference & Hackathon

On September 1st, I had the opportunity to speak at the ETH Warsaw conference in Poland, on the topic of enabling seamless asset bridging between Polkadot parachains and EVM chains.

During my presentation, I provided a comprehensive overview of cutting-edge techniques and technologies designed to facilitate seamless asset bridging, emphasizing their crucial role in connecting Polkadot parachains with EVM chains to foster a more interconnected blockchain ecosystem.

🇪🇺 sub0 Europe 2023: The Polkadot Developer Conference is around the corner

On September 19th, I’m thrilled to take the sub0 stage to present 'Revolutionizing Oracles: Building Trustless Price Feeds with Eth2 Light Client,' where I will delve into the critical role of oracles in maintaining data accuracy and the challenges they pose.


Previously, at the event, our Marketing team published an article covering the main topics, key speakers, and networking opportunities. Do not miss out on the details.

Blog post: sub0 Europe 2023: The Polkadot Developer Conference

🔗 Rococo’s t0rn updates: Hello to Polkadot & Kusama Parachains

Alongside testing cross-chain SFX each block to between t0rn and Rococo, we consistently feed t0rn with Polkadot and Kusama Relay Chain headers. Thanks to the smooth design of t3rn’s GRANDPA (Consensus System of Polkadot) Light Client, we are able to verify transactions that took place on all of the active Kusama & Polkadot Parachains, as well as the Polkadot and Kusama relay chains.

Within the last month we have successfully executed 25.000 cross-chain orders (t3rn’s SideEffects) on t0rn!

💸 Cost-optimizing Ethereum’s Gateway contracts

The initial rollout of t3rn will feature a two-way integration for cross-chain Orders (SideEffects) encompassing: t3rn, Polkadot with its active Parachains, Kusama with its active Parachains, and Ethereum.

Native Ethereum account holders will be able to facilitate cross-chain transfers and swap orders directly from the Ethereum. This convenience eliminates the need for users to bridge their assets into t3rn in order to post transfer and swap orders, although they have the option to do so.

By using t3rn’s Parachain as a storage layer within Polkadot’s consensus framework, we've managed to substantially reduce the costs associated with Ethereum's smart contracts that integrate with the t3rn protocol. This is primarily because all cross-chain order specifics are embedded in the call data. However, only the essential details are stored on Ethereum—restricted to a 32-byte keccak256 hash of the input. Orders dispatched to Ethereum are subsequently verified against the on-chain Ethereum Light Client incorporated into t3rn. The decoded order details are then stored on t3rn and subject to the further execution under t3rn protocol.

Adopting this strategy has enabled us to diminish the costs of dispatching cross-chain orders on Ethereum for any target chain backed by t3rn to approximately 70k gas. This is on average only 20% more costly than a standard ERC-20 transfer and 2.5 times more affordable than a regular swap on popular Ethereum DEXs such as Uniswap!

✨ Polkadot Upgrade to 1.0.0

On August 23rd, we had an important tech update on the t3rn network, centering around integrating the Polkadot 1.0.0 upgrade, a move that underscores our commitment to maintaining our network's functionality.

Worth mentioning that Polkadot v1.0.0 will be supported for the upcoming 6 months, following the convention of LTS (Long Term Support) releases. More of it can be found in a dedicated Polkadot Blog Post.

This step forward came with the practical considerations that all our infrastructure providers need to be aware of. We encouraged all Node Runners to take a moment to review the updated guidelines provided at: https://docs.t3rn.io/collator/testnet/testnet-collator, since these resources offer the latest insights into effectively managing t0rn collators.

Successful Upgrade

We're pleased to report that we successfully carried out the upgrade, including the implementation of the required runtime upgrades. The complexity of the task becomes apparent when we examine the significant activity on our GitHub repository: 428 files underwent modifications to accommodate these upgrades.

A comprehensive breakdown of the changes can be found in the PR (Pull Request) on GitHub: https://github.com/t3rn/t3rn/pull/1237/files

This upgrade underscores our ongoing commitment to progress and innovation.

Want to influence our next edition? Tweet me your ideas @Maciej_Baj and be a part of the Multichain Matters content journey.

Maciej Baj

Founder and CTO of t3rn