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Register for sub0 2022 💻 | Join us at Berlin Blockchain Week ⛓️

Sub0, the Polkadot Developer Conference, is back! Register now for your chance to get free tickets and join us in Lisbon Nov 28-29 for this in-person only event dedicated to all things Polkadot, Substrate, and Web3.

Before we dive in to the rest of the updates… let’s wish a happy belated birthday to Runtime Events, which were merged into the Substrate codebase on the 28th of August 4 years ago. 🎂 As originally conceived:

“Runtime events are roughly equivalent to “Events” in Ethereum ABI model. They’re high-level notifications for particular conditions hit by the runtime.” - Gavin Wood.

❗TL;DR and important announcements

• Be sure to register for the events happening during Berlin Blockchain Week (Sept. 12-17). You can find all the events organized by Polkadot ecosystem teams here, and you can sign up for the first edition of the Beyond the Chain meetup, hosted by Parity Technologies, here.
• Check out the upcoming and past Substrate Seminars
• Weights V2 is coming along and a bunch of new FRAME and tooling features was released

🔦 Community highlights

• InvArch announced Tinkernet on Kusama
• Nova demoed their integration with Parity Signer
• Blockchain engineer Adam R. presented Manta’s consensus system on the Manta Tech series
• Subwallet released their inaugural report on ecosystem growth during Q1 and Q2 of 2022
• Ajuna network held a Seminar on Game development for Substrate chains

📆 Upcoming events

• Hacker Day (Monday, September 12)
• The Architecture of Unstoppable Applications (workshop) (Monday, September 12)
• UI/UX in Web3 and beyond (Monday, September 12)
• Berlin on a Boat (Tuesday, September 13)
• Zombienet walkthrough seminar by Javier Viola, Parity Simulation Network Lead (Tuesday, September 13)
• Afternoon with Polkadot focusing on cloud services in web3 (Wednesday, September 14)
• NFT Gallery & Party with Polkadot (Thursday, September 15)

☕️ Technical updates

• An intermediate PR in preparation for Weights V2 has been merged, updating the Weight type to a struct (#12138)
• Several improvements have been made to the benchmarking machine (#12016, #12021, #12025, #12037)
• You can now sort by key in a BoundedVec (#11998)
• ResultQuery has been added to the list of possible storage item queries (#11257)
• Specifying state version when running try-runtime is now possible (#12089)

👀 Releases

• Polkadot (v0.9.28): adds new RPC and runtime API calls to query weights and fee for Call
• TxWrapper Core (v3.2.2): adds check for immortal eras
• Substrate Sidecar API (v13.0.0): more accurate partial fee calculation
• Subxt (v23.0.0): now supports custom RPC clients
• Polkadot JS API (v9.3.3)

📰 Substrate jobs

Have a look at all the open roles in the ecosystem on the Substrate Job Board.

Got ideas for content you’d like to see in future newsletters? Take a minute to fill out this form – we’d love to hear them. ❤️