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Welcome to the #4 edition of Rust in Blockchain, the hypest newsletter about the hypest combination of technologies. Previous #3.

September featured Berlin Blockchain week, one of the biggest blockchain events of the year, and a number of Rust blockchain projects were there. We held Rust in Blockchain events in Berlin as well as in Hangzhou, the videos for which (in Chinese) are linked below in the “learning” section.

Rust in Blockchain has a new logo, and there are stickers! They will probably be found at various events…

Project updates

Grin

• News: Experimental Tor Integration and Testing

• News: A New Journey with MimbleWimble

• Issue: Invalid Root #3016

• PR: Fix reading POW for edge bits 59 and higher by @hashmap

• PR: Fix finding common header between the header chain and the current body chain by @garyyu

Grin Newsletter

Near

• PR: Adding merkle proof to prev chunk header by @Kouprin

• PR: Runtime asynchrony tests by @nearmax

• PR: Contract rewards by @ evgenykuzyakov

• Video: Benny Giang from Dapper Labs

• Video: Taylor Wei from Top Network

• Video: Jaynti Kanani from Matic

• Blog: Use Case – Distributed Identity Solutions by @Anais Urlichs

• Blog: Long Range Attacks, and a new Fork Choice Rule by @Alex Skidanov

Nervos CKB

• News: Nervos CKB Development Update #19. Changes to consensus rules. Version 0.21.0.

• News: Meet the team behind the project

• News: The 5th and Final Round of our Mining Competition: Stage 1

• News: Nervos positioning paper. Nervos is “developing the only PoW, multi-asset & store of value blockchain in the world today”, as described in RFC 0001.

• News: Nervos CKByte public sale announcement. CKB will sell on CoinList on October 16th.

• Video: Matt Quinn discusses the testnet, token sale

Nervos CKB Development Update

Parity

• News: Preparing for Istanbul: New Parity Ethereum release. This release is compatible with the Istanbul hardfork.

• News: Hacktoberfest 2019. It’s easy to get involved in Parity during Hacktoberfest.

• News: Parity Signer 3.0 Beta is here!. Parity Signer is a mobile application that turns your old smartphone into a hardware wallet.

• News: Peter @ Parity discusses ongoing maintenance of their Ethereum client

Substrate

• Video: Substrate: One Year Later by Shawn Tabrizi. From Web3 Summit.

• PR: Add proof-of-work consensus by @sorpass

• PR: Make staking inflation curve configurable by @thiolliere

• PR: Explicit sync API for downloading important, possibly orphaned, forks by @rphmeier

Polkadot

• Video: Parathreads on Polkadot by Joe Petrowski

• News: The Polkadot wiki is upgraded

• Blog: How to upgrade a Kusama CC1 validator to CC2 by Francesco Cremona. Kusama is a Polkadot testnet.

Parity Ethereum

• v2.5.9 was released

• v2.5.8 was released

Solana

• PR: Clippy work towards Rust 1.38 by @mvines

• PR: Bench-tps: flush tx queue when too old by @CriesofCarrots

• PR: BPF programs use single threaded LLD by @jackcmay

• PR: Require stake, vote and executable accounts to be rent exempt by @ParthDesai

• PR: A new data-structure in shreds for partial deserialization by @ pgarg66

• PR: Rust BPF programs depend on Solana SDK by @jackcmay

Challenges

Grin: Allow nodes to (manually) recover from dreaded “Already Spent” error #3018 Near: Better tx RPC API #1299

Learning

Blockchain Tutorial in Rust

Introduction to Nervos CKB Script Programming 3: UDT

[Video] Rust for Decentralized Technology Berlin Meetup

[Video] WASM on the blockchain

[Video] [In Chinese] Cell Model and Logic Programming

[Video] [In Chinese] Wallet’s cross platform practice in Rust

Interesting Things

If you Run a Small Business Park In the Back of the Parking Lot

Events

October 1-31 | Online

Hacktoberfest

October 1 | Seoul, South Korea

Polkadot Meetup with Gavin Wood

October 8-11 | Osaka, Japan

DevCon

October 19-20 | Berlin, Germany

Lighting Conference

October 19-20 | Berlin, Germany

Diffusion 2019: Blockchain Hackathon

October 26 | Tokyo, Japan

Rust Tokyo

October 28 – November 3 | San Francisco & Berkeley, US

SF Blockchain Week 2019

October 30 | San Francisco, US

Rust in Blockchain Workshops

Careers

Centrifuge | Berlin, Germany; Remote

Rust Engineer

Chainlink | Remote

Senior Software Engineer

Commonwealth | San Francisco; Remote

Blockchain Engineer

Consensys | Europe; United States; Remote

Systems Engineer – Rust

imToken | Singapore; Hangzhou, China

Blockchain Development Engineer

IOHK | Europe

Software Engineer – Rust

Jsgenesis | Oslo, Europe; Remote

Senior Blockchain Developer

Kraken | Berlin, Germany; Remote

Software Engineer, Crypto/Payments

MXC Foundation | Berlin, Germany

Rust Engineer

Nervos | San Francisco; Hangzhou, China; Remote

Senior Test Manager

Senior blockchain Engineer

Parity | Berlin, Germany

Rust/Core Developer