Crypto

EF-Supported Groups: Analysis & Growth Replace

Buddies,

The yr forward shall be crammed with upgrades and large concepts from throughout the Ethereum ecosystem. Since our final Supported Groups submit (which adopted the launch of the beacon chain), the community has seen 3.8+ million Ether staked, and 120K+ energetic validators on-line throughout a number of purchasers.

In latest days, the launch of the Berlin community improve was accomplished, and since there’s all the time progress being made by different EF-supported tasks, these updates are a possibility to focus on extra efforts to develop and enhance Ethereum as an entire. Included on this version are updates from many groups highlighted within the earlier Supported Groups replace, and extra.

Get pleasure from!

Utilized ZKP

Authored by Thore Hildebrandt

Zkopru

Wanseob, Likelihood, Geoff, Rachel, Jin

Zkopru is an optimistic rollup that’s non-public. It helps transfers and atomic swaps. We’ve accomplished an audit with Least Authority and began a trusted setup which is able to finish on April sixteenth. As a subsequent step we’re beginning a testnet and constructing a pockets and block explorer.

Hubble

CC, Vaibhav, Jake

Hubble is an optimistic rollup that’s switch particular. We’ve accomplished an audit and are actually engaged on consumer enhancements and are onboarding a further engineer to expedite growth.

BLS World Pockets

James

Optimistic rollups (like Optimism) that use ecdsa signatures as default have an higher restrict of ~500 tps as a result of the signatures have to go on-chain. We use BLS signatures to scale back the on-chain storage, which might enhance throughput to ~3000 tps. Be taught extra right here. The unique contracts have been up to date to sensible contract wallets with meta transactions, and the aggregator is within the technique of being up to date to match. Additional work contains including token rewards, speccing out social restoration options and to organise an audit. You may catch James on the upcoming Scaling Ethereum Hackathon the place he’ll act as a tech mentor.

Blind discover

Kevin

Use MPC to privately seek for friends in a social graph and use ZKP to show that the trail exists. The primary model has been accomplished, we’re defining options for the subsequent iteration and beginning to develop the workforce to construct a consumer interface.

MACI

WeiJie, Corey, Han

The aim of MACI is to make collusion amongst members tough, whereas retaining the censorship resistance and correct-execution advantages of sensible contracts. We’re at present making use of it within the context of clr.fund. MACI has advanced past a minimal viable product, and model 1.0 shall be launched quickly. New options embody reusable voting contracts, decrease gasoline utilization, and better capability, which might assist a higher vary of quadratic voting use instances.

MicroMix v2

Jerome

MicroMix is a mixer for ETH and ERC20 tokens. It’s constructed on Semaphore, a base layer for privateness dApps. We are actually supporting the most recent model of node and ethers, and dealing with a number of networks and tokens. We up to date Surrogeth for a number of networks and tokens with simplified configuration. We’re finalizing work on the UI, fixing final bugs and dealing on arbitrum compatibility. Future enhancements embody eradicating the necessity for a surrogate for transaction charges, sooner zkp era within the browser, growing safety for personal keys and mechanically setting charge values.

Social Media Platform on Unirep

Ya-wen (Vivian), Doris, Rachel

We use Unirep to construct a personal decentralised social community like reddit. It permits the consumer to privately accumulate and show popularity. Contract spec has been outlined and we now have accomplished contract capabilities together with upvote, downvote, submit, and remark. We added a popularity nullifier scheme to forestall double a spending concern. Subsequent step is to begin work on the entrance finish with the assistance of a designer.

MPC Section 2 Consumer Interface

Goeff, Rachel

The aim of the MPC Section 2 UI challenge is to offer an user-friendly approach for everybody to carry out a trusted setup. The web site is completed and we’re at present utilizing it to run a trusted setup for the Zkopru. We’re amassing suggestions and learnings from the reside ceremony and exploring options for the subsequent iteration.

Discussion board Moderation with Prediction Markets

Liam

Use the prediction marketplace for moderation. Each submit creates a prediction market over whether or not the mods will mark it as a violation of group requirements. Liam is leaving the challenge and we’re on the lookout for somebody to take it over, see the “curatem” repos on Liam’s Github if this sounds fascinating to you.

Fame Proving Service

Jay, Raphael

Export cryptographic proofs of consumer attributes from present websites the place customers have accrued popularity (i.e. Github, Twitter, and so on.). These proofs can then be verified by websites or decentralized purposes.
A primary primary model is deployed and the service can now be queried immediately via an API to verify the popularity of a Twitter account. The subsequent milestone will enable customers to attach with an Ethereum account and authenticate with Twitter.

QDHP Quadratic Greenback Homepage

Raman

The Quadratic Greenback Homepage is a spin on the Million Greenback Homepage. Whereas it additionally includes a house for photos on a webpage, it permits customers to vote on how a lot house every picture takes up. Furthermore, it employs a quadratic and collusion-resistant voting mechanism on Ethereum referred to as Minimal Anti-Collusion Infrastructure (MACI) to forestall bribery and scale photos quadratically https://quadratic.web page/. Implementation is completed and we’re planning on doing some take a look at rounds quickly.

Information Publishing Market

Jacksoom

The challenge creates a spot to trustlessly publish information after crowdsourcing funds. The consumer shares an encrypted dataset (e.g. image our audiofile) that’s trustlessly revealed beneath the situation {that a} sure crowdfunding aim has been reached. The challenge is transferring shortly, contracts have been applied and a primary model of the web site is reside, subsequent up is circuit implementation.

Rollup Diff Compression

Blagoj

Rollups require you to publish a diff between the state earlier than and state after. This challenge investigates methods of lowering that diff to be able to scale back rollup prices for the case of airdrops particularly. At present we’re on the closing levels of experimenting with totally different information compression approaches/algorithms and benchmarking their efficiency. Subsequent steps are selecting the optimum information compression method for an iterative multi-stage retrospective airdrop and implementing the algorithm so it may be examined and utilized in follow on L2. The implementation shall be on high of the BLS World Pockets challenge above.

CLR.Fund Deployer

Spencer Graham, nameless contributor

The aim of the clr fund-deployer is to make it as straightforward as attainable for anyone (challenge, protocol, group, and so on.) to create their very own occasion of clr.fund to fund public items for his or her area. Clrfund-deployer has 3 deliberate releases:

Foggy – mainly, an internet UI from which to deploy all of the dependencies after which configure the contracts

Translucent – extending that net UI to deploy and configure the consumer and recipient registries and likewise begin a funding spherical!

Clear – from that very same net UI, deploy (and customise!) a brand new net UI to host their occasion of clrfund

We simply launched Foggy, and are getting began on Translucent, and likewise beginning on some UX design.

Ecosystem Help Program

Authored by ESP Crew

We just lately revealed our This fall Allocation Replace with particulars on the grants awarded within the final quarter of 2020, with over $4 million distributed throughout all classes.

In the meantime on the assist facet, we’ve blended issues up a bit! We’re processing inquiries via our web site as all the time, however over the previous few months we’ve explored some alternative ways of delivering assist:

Workplace hours

We’ve discovered that an off-the-cuff dialog could be a surprisingly highly effective instrument. Beginning in February we piloted “workplace hours”, the place groups or people can join one-on-one calls with the ESP workforce on subjects like challenge suggestions, exploring whether or not ESP is an effective match, or assist navigating the Ethereum ecosystem. We held our first rounds with a restricted time window, however we’ve been pleased with the end result and we’ll be holding signups open persistently any longer! Should you’re to speak with us, you’ll be able to submit a request right here.

Targeted grant rounds

We’ve additionally just lately hosted two grant waves concentrating on particular areas for R&D. These rounds allow us to highlight areas which can be significantly well timed or excessive precedence, and may also have barely totally different objectives or choice standards from ESP’s customary grants.

  • Staking Group Grants, held in December, awarded over 25 grants for efforts to enhance the Ethereum staking expertise. The outcomes of this spherical have now been revealed – take a look at the announcement submit for extra particulars and to discover a few of the sources produced by the superb Ethereum staking group!
  • Rollup Group Grants invited proposals to develop the rollup group ecosystem, from developer instruments to infrastructure, interoperability, academic sources and extra. Functions for this wave have now closed and we’re within the technique of evaluating submissions; hold an eye fixed out for a submit saying the grantees quickly.

Eth2 Analysis

A lot of what the analysis workforce is as much as is roofed within the Finalized and “State of Eth2” updates. Past the very public gadgets that make it in there, we now have been digging extra into stateless analysis, proofs of custody for EVM execution, sharding specs and prototypes, and different scaling/safety analysis. Most of our progress may be discovered on posts on ethresear.ch.

Discover just a few of our latest posts under:

Ethereum.org

Authored by Sam Richards

New homepage

We launched a contemporary new homepage! As the largest entry level for ethereum.org, we wished to verify our homepage did a greater job of explaining Ethereum by displaying off what it permits and by serving to customers begin their journey down the rabbit gap. Tell us what you assume:
https://ethereum.org/en/

Launchpad enhancements and localization

To advertise a more healthy, extra accessible, extra decentralized community, the launchpad is now obtainable in 15 totally different languages (extra coming quickly). Alongside this localisation effort, we additionally rolled out some content material adjustments and UX enhancements to assist customers arrange their beacon chain validators.
https://launchpad.ethereum.org/en/

Have concepts for enhancements? We welcome collaborators. Right here’s the repo:
https://github.com/ethereum/eth2.0-deposit

Translate newer content material

We rolled out translations for a few of our latest content material in 8 of our 33 whole languages (extra coming quickly):
https://ethereum.org/en/languages/

Discover ways to get entangled.

Use case pages

Issues like DeFi and the latest growth in digital artwork NFTs are driving customers to research Ethereum. They’re additionally compelling causes to affix in. We wish to be sure that we cowl these subjects, within the beginner-friendly approach you simply can’t get on Crypto Twitter, so new customers can be taught extra about essentially the most concrete use instances of Ethereum.

We launched 3 new pages:

Know a terrific Ethereum use case that’s lacking? Tell us!

Check out ethereum.org and our earlier updates to see what else we’ve labored on because you final visited. To make our work extra accessible and to foster extra group collaboration, we’ve additionally began sharing an outline of our quarterly roadmap objectives, which yow will discover on Github (see Q1 and Q2).

If you wish to contribute, yow will discover methods to get entangled, cease by our Discord or increase a difficulty/PR in GitHub. Particular due to all of the unimaginable individuals who have helped thus far!

Ewasm

Authored by Alex Beregszaszi

EVM384

The work on EVM384 has continued and we launched replace 5 in late January. On this replace, we proposed two totally different fashions for pricing the brand new directions, and shared estimated prices of BLS12-381 operations utilizing these fashions. Moreover, the replace supplied a short overview of additional potential enhancements to the EVM.

Moreover the sooner launched partial BLS12-381 implementation (evmcurves), new work exploring the applicability of EVM384 to MiMC hashing was additionally revealed. MiMC is among the zk-SNARKs pleasant hashing algorithms. We have been capable of present a considerable gasoline discount utilizing EVM384 (together with within the instance use case of Twister Money).

Necessary to say is that the work on MiMC confirmed some limitations of the interfaces (EVM384-v7 and EVM384-v9) proposed in replace #5 and sparked subsequent work for a modified interface.

Updates about EVM384 may be adopted on the suitable EthMagicians matter.

EVM

EVMC 7.5.0 has been launched, bettering the evmc CLI instrument and the utility libraries (new addition is evmc::hex). See the whole changelog for extra element.

The Baseline interpreter has landed within the evmone challenge. It supplies a comparatively easy EVM implementation with efficiency aggressive with the older Superior interpreter. See the evmone 0.6.0 launch notes and PR#261 for extra particulars.

Each EVMC and evmone have work in progress assist for the Berlin hardfork, within the type of EIP-2929 implementation (evmc#571 and evmone#289. These and associated adjustments are going to be included within the upcoming releases.

A set of artificial benchmarks has been added to the evmone challenge. They aim particular person low-level computational EVM directions. We plan to additional lengthen this and use it in an upcoming report.

We’ve additionally launched a write up referred to as EVM Object Format. The aim is to enhance the construction of EVM bytecode. It will enable for simpler introduction of assorted enhancements and options going ahead. Observe upcoming updates right here.

Code Merkleization

Whereas initially proposed to make use of RLP, on account of demand we pivoted to utilizing SSZ for the code tree. Added proof era and verification assist to fastssz (an SSZ library for Go), and experimented with proof compression approaches.

Additionally applied code merkleization logic in geth, in addition to hooks which compute code proof sizes (for various encoding codecs and compression strategies; i.e. RLP and SSZ encoding, Snappy compression) for historic blocks. See these lab notes in regards to the go-ethereum adjustments as a information.

In parallel to the work on the SSZ method we now have additionally began contributing to go-verkle to be able to achieve insights into the feasibility of code verkleization.

Fizzy

The 0.6 and 0.7 releases of Fizzy centered on introducing a C and a Rust API, in addition to including assist for WASI. Getting ready for the 0.8 launch we’re incorporating enhancements instructed by customers.

Following the objectives set in our earlier replace, we now have been evaluating environment friendly runtime metering approaches and have an implementation with a small overhead.

We additionally continued upstreaming testing enhancements to the official WebAssembly take a look at suite, with a dozen adjustments merged this yr.

Formal Verification

The Formal Verification Crew posted their very own quarterly replace on the finish of Q1 (31 March, 2021). The submit covers work on Act, hevm, and SMTChecker, and you’ll see it right here!

Geth

Model 1.10.0 of Geth was launched on 3 March, 2021 forward of the Berlin community improve. An in depth announcement submit, which covers updates and new options (authored by Péter Szilágyi) is obtainable right here.

Javascript Crew

Authored by Holger Drewes

Berlin was knocking on the door and stored us occupied. We had a VM v5.2.0 launch out mid March with full Berlin assist and a VM v5.3.0 quickly after including EIP-2930 Entry Listing era performance. Ethers turned Berlin-ready with the v5.1.0 launch with the addition of typed tx assist being the key change (and problem). On the sideline Chris put some important effort to assist HardHat on the VM v5 improve. Whereas HardHat ought to have a Berlin-ready launch out quickly after integration, we usually realized that the general dev ecosystem readiness for upcoming HFs is a systemic weak spot (the place we take our share). We are going to give this some further pondering if we can assist right here on coordination sooner or later.

Talking in regards to the future: what’s happening with our consumer? To make it quick: we’ll nonetheless play modest right here. We are going to seemingly be capable to do a primary alpha launch throughout the subsequent 2-3 weeks being succesful to do passive full-syncing on the key networks. Main position of this consumer will however stay for now to assist us internally on growth. We’ve began with the EIP-1559 implementation (truly this progressed already fairly effectively 😀) and our consumer will assist us considerably to check this beneath actual world situations early on.

We’ll additionally begin making ready for “The Merge” [tm] comparatively quickly (weeks), it is possible for you to to observe the progress right here. And whereas we’ll seemingly not fairly make it to affix the Rayonism hackathon our consumer will allow us to hook up with an ETH2 node by way of RPC early on and take a look at our tech stack towards the merge necessities.

Final however not least: our consumer considerably helped to harden our devp2p implementation and a primary actually production-ready launch is imminent (additionally: few weeks at most). We are going to proceed to evolve right here and subsequent deal with a wit/0 protocol implementation for witness syncing just lately introduced by Jason Carver from the Python workforce which significantly excited us and which we will then combine alongside our personal Beam Sync experiments.

Remix

Authored by Yann Levreau

The quarterly Remix Crew replace can also be reside! Discover updates on the workforce and members, React, VSCode extension, Matomo, Workspace, and extra on the Remix Medium web page.

Snake Charmers [Python Ecosystem: PyEVM/Trinity/Web3.py/Fe-lang]

Authored by Grant Wuerker

Fe-lang is a high-level language applied in Rust. The workforce is concentrated on offering the group with language options and tooling that make it straightforward to create dependable sensible contracts.
Listed here are some growth highlights from the primary a part of 2021:

  • Month-to-month releases: We started slicing releases each month beginning in January and can proceed to take action.
  • Extra options: We proceed so as to add helpful options to the language. Listed here are some value noting:
    • structs
    • exterior contract sorts
    • built-in safe-math
  • Uniswap-V2 core demo: We set a aim to assist a primary implementation of the Uniswap protocol by April. We completed this by the start of March.
  • Exterior contributions: We’ve acquired contributions from 5 folks exterior of the EF.
    • Many individuals get enthusiastic about writing Rust. Naturally, a lot of Rustaceans have emerged to assist with growth.
    • We’ve additionally acquired assist fuzzing the compiler from agroce. For more information, learn his submit.

The workforce will proceed engaged on the next issues:

  • Getting a secure launch to customers.
  • Increasing kind assist and extra thorough checking.
  • Including a module system and customary library.
  • Enhancing error messages.
  • Differential contract fuzzing.
  • Superior language options.

Web3py

Authored by Keri Clowes

The 2 main options that the web3py workforce has been centered on are the Eth2 Beacon API, and making progress towards async assist. We’re proud to report that the Beacon API is prepared to be used! Our documentation and assist guides have additionally seen loads of love recently, and we’ve began to plan the v6 launch which is able to seemingly be coming later this yr! And naturally, group assist and bug fixes all the time take precedence after they come up.

Stateless Ethereum

Authored by Piper Merriam

The Stateless Ethereum effort continues on with statelessness a excessive precedence for the Eth2 merge. The first blocker for statelessness is at present witness sizes, which might simply be 10’s or 100’s of megabytes beneath the present protocol. Our unique plans centered on changing to a binary trie, which was projected to scale back witness sizes right down to just some megabytes. The latest analysis on Kate commitments and the event of the Verkle Trie has shaken up the roadmap a bit. The c offers us a agency higher certain of 800Kb with an anticipated common witness of 200kb which is a large discount in dimension. Work is underway on POC implementations of the unified Verkle trie within the go-ethereum codebase.

We’re additionally making progress on EVM adjustments that might place agency financial bounds on the overall dimension of the state by way of “state expiry”. Reasonably than deleting state, “state expiry” as an alternative strikes items of the state that haven’t been touched for some time into an “inactive” state. Something that’s inactive may be activated by offering the protocol with a proof, elevating it again to being “energetic”.

As well as, the EF has established a brand new fund for constructing out Stateless Shopper Infrastructure to make sure that we’re not solely capable of make the protocol assist statelessness, however that purchasers will be capable to deliver the advantages of statelessness to finish customers by way of lighter weight purchasers.

Safety [Security / Consensus Tests]

Authored by Martin Holst Swende

The muse safety efforts covers a variety, from cross-client fuzzing to excessive degree protocol and architectural adjustments to the Ethereum stack.

Because the final replace, two necessary adjustments have been launched to the consensus layer:

  • EIP 2929, which supplies a backwards-compatible method to modify gasoline pricings for trie-dependent opcodes. Adjusting opcodes based on the precise useful resource consumptions is necessary to keep away from DoS vulnerabilities within the platform core, and has beforehand been carried out e.g. in EIP 1884. The “new twist” with 2929 is that the adjustment is backwards-compatible, making all “breakage” which happens because of the raised value attainable to “unbreak”, by way of:
  • EIP 2930, which permits callers to specify, and pre-pay for, sure slots which can be accessed later throughout execution. By charging this value up entrance, it’s attainable to make the raised value un-noticeable in the course of the execution.

On the protocol facet, the ETH-66 protocol has been applied in go-ethereum, and it’s anticipated that different purchasers will observe the identical path. ETH-66 provides request identifiers to the protocol degree. Why is that this necessary from a safety perspective?

As purchasers work proper now, any time a consumer sends a request to a peer and will get a response, they should do some guesswork to find out which request a given incoming packet is in response to. This works “so long as it really works”, however is error-prone; e.g. in instances the place friends drop off and reconnect, or reply gradual sufficient that the request occasions out.

Due to the inherent lossiness of the present protocol, it’s laborious for any consumer to be strict about response checking, and implement any sort of guidelines for the best way to deal with misbehaving friends – it’s merely very tough to pinpoint if the reason for a mismatch is because of a malicious peer, or if it’s attributable to community lag.
With request identifiers, the street is open to implement much more subtle and environment friendly networking stack.

From the fuzzing facet, we recognized one ‘crasher’ regarding Besu, which may have been exploited on mainnet, one Besu berlin-related consensus concern with Yolov3, two consensus points associated to Nethermind. Except for that, the usual reference-tests executed on Hive discovered a difficulty in OpenEthereum, which was exploitable with specific variations of the Rust compiler.

Loads of the fuzzing work recently has been carried out by Marius van der Wijden, who just lately completed his Grasp Thesis about fuzzing ethereum digital machines. Congratulations and effectively accomplished Marius 🎉!

Solidity

Authored by Franziska Heintel

0.8.0 Breaking Launch and New Options

As an early Christmas current, we launched Solidity 0.8.0 mid of Dec 2020. v0.8.0 is a breaking launch and most notably introduces checked arithmetic operations by default. This function may be disabled domestically through the use of an unchecked block. Moreover, ABI coder v2 is now activated by default. You may activate the previous coder utilizing pragma abicoder v1. Learn all particulars about Solidity 0.8.0 within the launch announcement and discover a listing of breaking adjustments within the documentation.

We subsequently launched Solidity variations 0.8.1., 0.8.2 and 0.8.3:

  • v0.8.1 introduces many new options for the SMTChecker and permits to catch panic errors. Extra particulars.
  • v0.8.2 provides an optimizer stage that may inline small quantities of code to avoid wasting gasoline and supplies extra means to work with code documentation by exporting inline feedback and permitting customized natspec tags. Extra particulars.
  • v0.8.3 fixes the Solidity Optimizer Keccak Caching Bug, which is current in all prior variations of Solidity, and, as well as, contains two enhancements to the optimizer which might present an enormous gasoline profit when writing structs that cowl a full storage slot to storage. It additionally provides new SMTChecker docs and a tutorial. Extra particulars.

The numerous enhancements to the nonetheless experimental assist to compile by way of our intermediate language Yul should not seen within the changelog as a result of the function shouldn’t be formally launched but. Nonetheless, we encourage everybody to attempt it out via solc --experimental-via-ir and supply suggestions!

Solidity Developer Survey 2020 Outcomes

We revealed the outcomes of the Solidity Developer Survey 2020. Should you’re on the lookout for a digest, yow will discover abstract threads with highlights here and here. We wish to lengthen an enormous thanks to the entire Solidity builders that participated!

Ecosystem Outreach

We’re continually engaged on bettering our outreach to and interactions with the Solidity ecosystem. Beneath yow will discover just a few initiatives we launched in Q1.

Extra Inclusive Language Design

In our effort to foster alternate of data, encourage extra builders to offer suggestions about Solidity and be a part of the discussions on language design and future route of the compiler, we launched the Solidity discussion board. The Solidity discussion board is now the devoted place to debate subjects & questions associated to the design of the Solidity programming language. For a fast information on the best way to use the discussion board and its classes, see the announcement. Should you’d wish to be taught extra about the best way to take part within the language design, additionally take a look at this Contributing 101.

Nearer Change with Tooling Builders

We launched the solc-tooling chat, which is supposed to function a brief & straightforward communication line between Solidity tooling devs and the Solidity compiler workforce. The chat room is public and lives on Matrix, with a bridge to Telegram.

Common AMAs

We proceed to host common Solidity workforce AMAs. Take a look at the outcomes from the most recent AMA right here.

Localization of Solidity Documentation

We arrange a brand new workflow and residential for translations of the Solidity documentation.
Now, we’re on the lookout for language maintainers who will arrange the interpretation efforts for his or her respective language, guarantee high quality and accuracy and ensure translations are stored in sync and are on an up-to-date degree and bot consultants who can assist with some automation. The translations are supposed to decrease the entry limitations for non-English talking builders and therefore will enable a broader set of builders from all around the world to get to know Solidity. Please unfold the phrase about this initiative in your native communities!

If you wish to contribute to this mammoth activity by translating or serving to arrange the method please be a part of us within the new Solidity docs GitHub org and within the discussion board.

Be aware that the English reference model is and can stay the one formally supported model by the Solidity workforce and can all the time be essentially the most correct and up-to-date one. When doubtful, all the time discuss with the English (unique) documentation.

ZoKrates

Authored by Thibaut Schaeffer

Up to now quarter, the ZoKrates workforce centered on a brand new breaking launch of the toolbox. This new model is now launched with assist for brand new highly effective constructs:

  • fixed generics
  • assist for the keccak household of hash capabilities
  • inference on integer literals
  • and extra!

These additions allow a way more compact implementation of a variety of algorithms, for free of charge.

On high of that, loads of inner optimisations lowering proving and compilation footprint of ZoKrates applications have been launched. For an entire listing of the adjustments, take a look at the changelog.

Lastly, nearer exploration with the ZKP Analysis workforce was began with the aim of supporting snarks schemes with common setups.

Michael Evans

Professional writer, editor, and producer with over a decade of experience. I'm an experienced editor who has written for a variety of publications, and I specialize in editing non-fiction articles, news, and business blogs.

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