A collection of 52 posts

  • Engineering at Parity: What it's like

    What's it like to work at Parity? Here at Parity we pride ourselves on being an open source company. We build open source software and operate in the open with all code and
  • Q&A with Parity’s new CTO, Fredrik Harrysson

    by Alexandra Heller, Parity Technologies Communications Jutta Steiner recently announced Fredrik Harrysson (Twitter, Github) as Parity’s new CTO. I sat down with Fredrik to chat about his vision for Parity’s software
  • Keeping Pace with Development: Fredrik Harrysson becomes CTO

    by Jutta Steiner, CEO Almost three years ago we started Parity Technologies with the aspiration to build the fastest and most secure software for Ethereum and the decentralised web. Over the years, we’
  • What is a light client and why you should care?

    by Thibaut Sardan, Parity Technologies Light clients are crucial elements in blockchain ecosystems. They help users access and interact with a blockchain in a secure and decentralized manner without having to sync the
  • Parity-Ethereum//v2.0.0-beta

    by Afri Schoedon, Parity Technologies Release Manager Code-named “Ethereum,” the Parity Ethereum client v2.0 release has arrived. This release not only comes with new features, performance optimisations, and general stability improvements but
  • What is Substrate?

    Just as most web applications shouldn't need to reimplement their own version of HTTP, we believe that it's wasted effort for every team creating a new blockchain to have to implement all the networking and consensus code from scratch.
  • Why Rust?

    by Dmitriy Kashitsyn, Parity Technologies Core Dev Programming is hard. Not because our hardware is complex, but simply because we're all humans. Our attention span is limited, our memory is volatile—in other
  • Polkadot co-founder Robert Habermeier named 2018 Thiel Fellow

    The Thiel Foundation announced the 2018 class of Thiel Fellows, and Parity’s own Robert Habermeier has been selected as a recipient. The 20-year-old Washington D.C. native will receive $100,000 over
  • Why we believe in Wasm as the base layer of decentralised application development

    Recently there’s been a lot of discussion around using Wasm for blockchain development. Here's what the buzz is about: The issues with current tech Ethereum pioneered the field of decentralised application platforms
  • Parity Ethereum Client Issue Report

    Summary: A consensus issue on the public test network Ropsten has revealed a consensus vulnerability that can be triggered by a malformed transaction. Severity: Critical Product affected: Parity Ethereum client Affected versions: stable
  • Security Alert

    A potential consensus issue with Parity Ethereum has been identified. Severity: Critical Product affected: Parity Ethereum client Affected versions: stable track up to 1.10.5-stable beta track: up to 1.11.2-beta
  • PICOPS to be discontinued on May 24th, 2018

    After assisting many ICOs and token sales last year, we are sad to announce that Parity ICO Passport Service (PICOPS) will no longer be operational as of May 24th, 2018. PICOPS is a
  • Parity 1.11 Beta: Now with Private Transactions

    Parity 1.11 Beta is here: a faster, more extensible Ethereum client. This huge update to Parity Ethereum allows you to create encrypted contracts and transactions on-chain and warp-sync to specific blocks. Now
  • Secure from scratch: our new smart contract development processes

    We founded Parity Technologies with the aspiration to write the best and safest software we can. We’ve learned a lot from our past mistakes. The wallet bugs, in particular, lead us to
  • Our commitment to Ethereum and a decentralised future

    We are early pioneers in a new industry where software is money, and one oversight can cost millions to the very users we work so hard to support. We started Parity Technologies in 2015 with the goal to build the fastest and most secure software for Ethereum and the decentral web.
  • Creating a lighter experience

    It’s easy to think of Parity Wallet UI and Parity Blockchain client as the same thing, but the wallet UI is really a DApp like any other. Many users run their node on its own or with other DApps. Since the UI and the node are two distinct units, we will soon start shipping them as such.
  • Parity Signer and MyCrypto: Securely sign transactions offline

    Parity Signer, available for iOS and Android, is an offline mobile app that securely generates and stores your private keys. Most mobile wallets connect to the internet, but Parity Signer gives you one
  • Private Transactions, WebAssembly, and Permissioning: New Features Supported by Energy Web Foundation to Power a Blockchain for Energy

    There’s been a lot of buzz about blockchain technology’s potential to revolutionize a wide range of industries, but most blockchains available to the public simply won't meet an industry's unique requirements
  • Parity 1.10 "Opportunity" released

    Parity Technologies is continuing its mission to develop trailblazing, next-generation technology for the decentralised web. Today, we announce the first beta release of the Parity Ethereum client version 1.10 "Opportunity"
  • Fighting hunger with blockchain

    As millions continue to be affected by conflict and natural disasters, the UN World Food Programme (WFP) has recognised the potential of blockchain as a tool that can help feed the hungry. Every
  • Bridging the ÐApp – Scaling now with Parity Bridge

    Transaction fees on the Ethereum main network have risen to rates that are far too expensive for ÐApps to run efficiently. Decentralised initiatives such as Giveth and Swarm.City have seen their projects
  • Parity Technologies enlists Trail of Bits to lead security review

    After receiving many proposals from security auditing firms, we are excited to announce that we have chosen Trail of Bits to review and, if indicated, improve the security of our code. With the
  • Velocity: The fastest Parity released.

    Dear Ethereum communities, dear blockchain developers, dear decentralization enthusiasts: Parity Technologies is thrilled to announce the latest release: Parity 1.9 or Velocity. We’ve knuckled down and implemented a bunch of optimisation
  • On Classes of Stuck Ether and Potential Solutions

    A Brief History Since Ethereum went live two and a half years ago, users and developers have often struggled with the usability and building on this new ‘Frontier’ of development. The issues began
  • A Postmortem on the Parity Multi-Sig Library Self-Destruct

    On Monday November 6th 2017 02:33:47 PM UTC, a vulnerability in the “library” smart contract code, deployed as a shared component of all Parity multi-sig wallets deployed after July 20th 2017,
  • Parity Technologies Multi-Sig Wallet Issue Update

    This week, as has been widely reported, a vulnerability in the Parity Wallet library contract of the standard multi-sig contract was found by an anonymous user. This user managed to gain access to
  • Security Alert

    Severity: Critical Product affected: Parity Wallet (multi-sig wallets) Summary: A vulnerability in the Parity Wallet library contract of the standard multi-sig contract has been found. Affected users: Users with assets in a multi-sig
  • Announcing Parity 1.8

    Winter may be coming but the moment you’ve all been waiting for has finally arrived: Parity Tech is excited to announce the release of the BIGGER and BETTER 1.8.0. This
  • Parity Technologies launches PICOPS!

    PICOPS (Parity ICO Passport Service) is a new service, created and hosted by Parity Technologies which enables members of the public worldwide to associate a single Ethereum address with their unique identity; more
  • Parity Bitcoin is now supporting SegWit, SegWit2x and Bitcoin Cash

    The Parity Bitcoin client (pbtc), released in April this year, is a full-node implementation of the Bitcoin protocol written in Rust. Our team is thrilled to announce its recent upgrade that includes support
  • Announcing Parity 1.7

    It has been all too long since our last release. Some four months have passed since the 1.6 series and over that time we've seen the rise of ETH and BTC, ICO
  • Security Update

    A quick update on the status of Parity Ethereum client. Bug Bounty There is now a significant amount in our bug bounty programme (many thanks to all contributors). As mentioned in a previous
  • Announcing the Bug Bounty Program

    As recent events have shown us, it's not always enough to have good programmers, open-source software and peer reviews in order to ensure no critical bugs make it through to release. While users
  • Security Alert

    Severity: Critical Product affected: Parity Wallet Affected implementations: Parity 1.5 or later Summary: A vulnerability in Parity Wallet's variant of the standard multi-sig contract has been found. Affected users: Any user with
  • The Multi-sig Hack: A Postmortem

    On Wednesday 19th July, 2017 a bug found in the multi-signature wallet ("multi-sig") code used as part of Parity Wallet software was exploited by parties unknown. As of the time of
  • Restoring & blank seed phrase

    It has come to our attention that a small minority of users have misunderstood a function within Parity Wallet, and in doing so have created insecure accounts. TL;DR: Don't use the "
  • Announcing Parity 1.6

    As Spring returns the blood to our blushing chops, I'm happy to come to you with news of our latest release. After a couple of weeks in lovely Castello Tesino on our (apparently)
  • Announcing Parity 1.5

    Well, it's that time again, folks. You find me writing this on the train back from our ten day Yuletide retreat-sprint. Most of the team (pictured below) spent 10 days in lovely Lipia
  • Announcing Parity 1.4

    I'm pleased to announce the release of the latest in the series of Parity. As the 1.3 series becomes our stable release with 1.3.10, 1.4 is elevated to beta
  • Onwards

    It's been a hectic few weeks for Ethereum and for Parity’s dev team. Some rather irresponsible individual found a flaw in the Ethereum protocol; notably several of the EVM’s operations were
  • Announcing Parity 1.3

    Another 7 weeks pass and I'm happy to announce a shiny new release of Parity! It has been a busy time for us (and the community as a whole!) with various events happening
  • Parity 1.2.2 released - Hard fork enabled

    Get the latest Parity here. The latest version of Parity has just been released - this build includes modification for the hard fork, improved performance when syncing and other bug fixes. If you
  • In support of a hard fork

    AN OPINION OF ETHCORE A shared experience of disbelief flooded through the Ethereum community a few weeks ago - not because hacks are unheard of - but because the sheer scale of this
  • The DOS vector and the Soft Fork for Miners

    GRIEFING THE NETWORK Recent blog posts have highlighted a previously noted issue with the type of transaction-blocking that the soft fork uses to freeze access to the DAO's funds. Namely that any transaction
  • Condition-Oriented Programming

    Condition-Orientated Programming (COP) is a hybrid approach between functional and imperative programming. Done properly it is a tool in your arsenal for writing safe, secure contracts. It helps make your contract code comprehensively
  • How we find common ground and settle our differences.

    To look at Ethereum social media today you might think that we had somehow been invaded by some obscure political subreddit. Words like ‘principles’, ‘ideologies’, and ‘zealotry’ are being thrown around. It has
  • Announcing Parity 1.2

    It has been longer than expected in the coming, but I'm happy to announce at long last the third major release of Parity, codenamed "Security". This release is the culmination of
  • Our DAO Response

    What can be done? Ideally, the DAO developers will find a way to extract the stolen funds without any protocol alterations (aka "hard fork"). However, such a plan, if feasible, will
  • Attack on The DAO: What will be your response?

    Two days ago a flaw was spotted in the contract code of theDAO - specifically a recursive call issue that exists in the function withdrawRewardFor.
  • Announcing Parity 1.1

    A short 6 weeks since Parity 1.0, I'm happy to announce Parity 1.1, codename Alacrity. This is a mid-term release (we're half-way to 1.2 Civility) with mostly "under-the-hood"
  • Parity 1.0 is here!

    So it has been around 7 weeks since the 0.9 prerelease of Parity, which demonstrated the fastest and lightest fully compliant Ethereum block processing engine available. Now, about a week after expected,
  • Performance Analysis

    So with the latest benchmarks (available to see at, it's clear Parity has head and shoulders the fastest and lightest Ethereum block processing engine amongst the available clients. But aside from