[10/22] Last day to register for Sub0 📝 | Polkadot Fellowship Manifesto released 📘

Sub0, the Polkadot Developer Conference is almost here! You can now check out the full program and find out exactly what to expect in Lisbon on November 28-29. Besides interesting keynotes, panel discussions, and interactive workshops, this year’s edition of Sub0 also offers attendees a variety of ways to get personally involved, including:

• A Demo Area, where you can showcase your current projects and products to the Sub0 audience. Designated tables for this will be granted on a first come, first serve basis upon check-in at the event.

• Barcamp Talks, allowing you to put your ideas forward for open forum discussions in a designated networking space. Submissions will be voted on by attendees, with the winners invited on stage to chair the discussions.

Registration closes today, so make sure you apply as soon as possible.

Before diving in to the rest of our updates, let’s kick things off with a quote from the legendary Edsger W. Dijkstra:

“The purpose of abstracting is not to be vague, but to create a new semantic level in which one can be absolutely precise.”

❗️TL;DR and important announcements:

• You can now contribute to future editions of the Substrate Developer Newsletter.

• The Polkadot Fellowship manifesto has been released, along with an open call for Polkadot core developers to join the fellowship. Learn how to get involved here.

• There have been several notable renaming improvements in Substrate’s codebase and steady progress is being made towards using weights V2.

🔦 Community highlights

• We want to start including news that you may have to share, so we’re opening up the Substrate Developer’s Newsletter for contributions. Check out the repository to learn how you can propose content for future editions.

• Interested in joining the next Polkadot Devcamp? Apply before October 23rd.

• Moonbeam has introduced the XCM SDK, a tool that makes cross-chain interoperability more accessible to developers on Moonbeam and other parachains on Kusama and Polkadot.

• Check out this new Patricia merkle trie verifier in Rust that supports no_std. It allows you to verify Ethereum style merkle patricia proofs as specified in this document.

The Integritee SDK has been released. Use it to build out your TEE applications on Polkadot. Read updates from the ink! newsletter here.

📆 Upcoming events

• Polkadot Meetup Slovenia (Thursday, Oct. 13th, Ljubljana)

• Dot in Vietnam, read the full announcement here. (Tuesday, Oct. 18th, Hanoi).

• Astar Tech Talk: Using Covalent to analyze on-chain data (Tuesday, Oct. 18, Online)

• Beyond the chain: Breaking into blockchain (Thursday, Oct. 20th, Berlin)

• Beyond the Chain: Getting a job in Web3 (Thursday, Oct. 20th, London)

Polkadot Summit (Thursday, Nov. 3rd, San Francisco)

☕️ Technical updates

• Benchmarking for XCM on Statemine/t will significantly bring down fees (approx. 10x cheaper)

• Renaming PRs for RuntimeOrigin, RuntimeCall and RuntimeEvent have been merged (#12258, #11981)

• Anonymous proxy has been rename to pure proxy (#12283)

• Migration is required after adding the ability to do fixed point math on balances for making storage deposits resistant against changing deposit prices (#12083)

• A new pay_tips method has been added to the Uniques pallet (#12168)

• A new sp-weights crate (#12219) and a storage size component (#12277) have been added as part of the preparations for rolling out Weights V2

• Go to Polkadiff for a full list of merged PRs since the last Polkadot release.

👀 Releases

• Polkadot (v0.9.29): no major changes.

• TxWrapper Core (v4.0.1): minor bug fix.

• Substrate Sidecar API (v14.0.0): now supports NStorageMaps

• Subxt (v24.0.0): jsonrpsee can be an optional dependency, which opens the door to integrating Subxt into light clients. A "runtime upgrade" API is exposed, giving more visibility into when node updates happen in case your application needs to handle them.

• Polkadot JS API (v9.5.1): new changes and additions to adapt to Weight V2.

📰 Substrate jobs

Check out all the open roles in the ecosystem on the Substrate Job Board.

Got ideas for content you’d like to see in future newsletters? Make a PR for the next edition here – we’d love to include them. ❤️