We’re excited to share some updates on the Coherent product and our roadmap. If you haven’t read our previous changelogs they’re available here. As a reminder, we post changelogs every two weeks to keep up with new product launches and updates. As always, hit us up @coherentapi or on any of our emails with feedback or features you’d like to see. Otherwise, here goes…

Polygon

First up, we’ve launched polygon mainnet for all of our users. Over the past two weeks we’ve backfilled almost 2 billion polygon transactions into our systems. Polygon is one of the top EVM compatible chains, with some of the highest adoption after Ethereum mainnet. We’re excited to launch Polygon alongside Ethereum and Optimism as we expand our chain offerings. Next up, Arbitrum and Goreli!

Zapier Integration

A common feature many teams ask for are low/no-code ways of using Coherent. Today we’re launching our Zapier integration that makes it super easy to integrate Coherent’s enriched blockchain data into apps like discord, slack, google sheets and other common applications. Just connect your account with an API key to get started!

For more updates, follow us on twitter @coherentapi! We’re always looking for user feedback as we iteration on and improve the product.

New Website!!

Woot woot - glad to have more than just a simple landing page, but if you head over to coherent.sh we have a brand new look and logo as well. A new signup flow as well, and we’ll be fully posting on our website blog (all prior Mirror content on there as well) starting from next changelog. The redesign is thanks to our…

New Chief of Staff!

We’re proud to announce our new chief of staff, Daniel Avnieli! He’s been helping out with the major redesign of the website as well as wearing a million and one other hats, and he’ll be another one of the main points of contacts moving forward. You can reach out to him at daniel@coherent.sh, and after some more updates to our site you’ll see him featured as a new member with a small blurb about his background. Hyped to have you on the team Daniel!! 🥳

Handling Proxy Contracts

When coding up the parsing logic for Gnosis Safe, our team ran into issues with correctly identifying the right contract logic - without going too much into the nitty gritty, its proxy infrastructure which saves on gas fees would confuse our indexer since none of the actual smart contract functions or logic we were looking for would be within the given address.

By digging deeper into the DELEGATECALL traces, our indexer now handles proxy infrastructures! This enables us to cover a far broader range of transactions, and helps our own indexer scale well.

Polygon + more coverage

Finally, we’re currently underway on backfilling Polygon after finishing our Ethereum backfill and improving contract coverage for all chains. The end goal is to have 95%+ of all transactions parsed across an ever expanding variety of chains, with Arbitrum in the pipeline soon as well.

Thanks for reading y’all, and we’ll be back in the two weeks again with more updates! Ping us at any time @coherentapi.

Excited to share updates on our work the past two weeks. If you haven’t read our first changelog, it’s available right here, and as always, hit us up @coherentapi or any of our emails to provide feedback or other features you’d like to see. Already it’s been so helpful in iterating our product, so we’re always down to talk more. Without further ado (drumroll sounds in the distance)…

Multi. Chain.

We’re excited to finally be moving towards a central part of our vision. We’ve finished our backfill for Optimism blocks, and underway on parsing popular Optimism dapp contracts to increase our offerings for readable transactions. And thanks to the wonders of L2, all the contracts we’ve already parsed on Ethereum are also already available on Optimism, but plenty of work left to be done.

Websocket Streaming API

Also excited to announce that we’ve spun up a streaming service as well for transaction history, allowing you to subscribe to an address and listen for new readable transactions from chain-tip, helping out users who were in need of a notification service or a generic live feed of user transactions. Will be typing up some documentation for this soon and putting it on our site, but please stay posted and sign up for the alpha so we can get back to you!

Reduced Latency

Finally, thanks to some wizardry from our engineering team, we’ve streamlined the number of external API calls and have reduced our latency by 50%, taking a step towards our end goal of being one of the most performant APIs available on the market.

Thanks for reading, and appreciate all the patience from you guys on our alpha! If we haven’t gotten back to you yet, it’s because of all the immense support and influx we’ve received since our fundraising announcement, so we want to make sure we take our time with onboarding and delivering a solid first iteration to you all. Excited to hopefully get all of you using it soon, and we’ll be back with more updates!

To foster transparency and clarity of thought, we at Coherent want to start off on the right foot as a company and establish a culture of writing well. Whether it’s internal communication or making our documentation as approachable as possible for developers, clear writing comes from clear thinking - it requires us to invest more time into shaping our ideas before we share them. Hence, we want to make quality writing a pillar of our company.

As a result, we’ll be writing memos to the public in the form of regularly published blogs, allowing all to see the progress we’ve made and share in the lessons learned. We’ll be sharing updates on our product line and also just write pieces on topics we’re really excited about in Web3. And if you ever have any feedback or just want to chat, feel free to drop us a line on Twitter @coherentapi, @orange_juicetin, or @carlcortright.

Product Updates

Contract ABIs

Though an unexpected product we never foresaw coming, we’re happy to announce that starting today we’ll be offering a contract ABIs endpoint! In addition to returning an ABI, we also provide contextual data such as its standard (ERC20, 721, etc.), the contract’s verification status, its symbol, and more. Docs can be found here under docs.coherent.sh.

The main improvements come from its higher-fidelity offering of “repaired ABIs” for a broader variety of contracts compared to what Etherscan provides. This is done through our internal processes of mending incomplete ones using event fragments - thanks to some help from @Metagame, we were able to work off the existing contributions from Brenner in order to incorporate these manually scraped fragments into our decoder. We’re still midway in terms of ironing out some kinks in our process, but for now the endpoint still has full functionality in returning more reliable, consistent responses:

{
  "address": "0x3619e0299f9c3f5c6502abdabf77d246fd328ea5",
  "name": "Crypto Miner Token 3",
  "symbol": "CMT3",
  "officialName": "CryptoMinerToken3",
  "standard": "ERC20",
  "abi": "[{\"constant\":true,\"inputs\":[{\"name\":\"_customerAddress\",\"type\":\"address\"}]...etc.,etc."
  "verified": true
}

We decided to release this endpoint after our own struggles working with the Etherscan API, a relatable problem for most developers. It wouldn’t reliably provide us ABIs capable of decoding all the data we were working with - for certain contracts that weren’t verified, they would be incomplete or outright inaccurate at times. Other times, multiple ABIs would be returned for a single contract, leaving it up to us to test each one to determine the right one. Not to mention parameter names varying from ABI to ABI, adding to the overall bugginess and inconsistency. Our hope is that this endpoint can offer a clean solution to that for all Web3 developers.

Transaction History

Our whole team has been working extraordinarily hard these past two weeks to also launch a product we’re extremely excited about: readable user transaction history! We’ve talked to many of you already concerning your data needs, and our hope is that this endpoint can address a lot of shortcomings in the current API landscape. Docs here.

We’re currently live-indexing and working on backfilling all our historic data as we speak, and the product is available in production for our alpha testers to play around with more recent transactions closer to the chain-tip.

The protocols available within transaction history as of now include OpenSea (both Wyvern and Seaport Protocol) and Uniswap V2 and V3, all of which compose the top 3 Ethereum DApps (in terms of users) to date. We’ll continue to add many more contracts as we go down the list of most used DApps in the near future.

When you put in a given user’s address, you receive an array of enriched transactions composing a user’s transaction history, a single one of which will look like this:

{
  "timestamp": "2022-08-12T15:31:02Z",
  "txHash": "0x88c685ec618e51eba87a9907ea8b8b5cf50ee99c0d58a03dc1ee960531b0d955",
  "contractName": "UniswapV3",
  "fee": {
    "amount": "0.00000000000027606",
    "currency": "ETH"
  },
  "category": "token_swap",
  "action": "swapped",
  "description": "0xe7a9 swapped 0.002 ETH for 15945 Wrapped BTC on UniswapV3",
  "blockchain": "ethereum",
  "assetsSent": [
    {
      "From": "0xe7a91167c495d881a58b56e780bd6b1f51a3500e",
      "To": "0x68b3465833fb72a70ecdf485e0e4c7bd8665fc45",
      "amount": "0.002",
      "Type": "ETH",
      "Asset": {
        "name": "ETH",
        "symbol": "ETH",
        "standard": "native ETH"
      }
    }
  ],
  "assetsReceived": [
    {
      "From": "0x391e8501b626c623d39474afca6f9e46c2686649",
      "To": "0xe7a91167c495d881a58b56e780bd6b1f51a3500e",
      "amount": "15945",
      "Type": "Token",
      "Asset": {
        "address": "0x2260fac5e5542a773aa44fbcfedf7c193bc2c599",
        "name": "Wrapped BTC",
        "symbol": "WBTC",
        "standard": "ERC20"
      }
    }
  ]
}

On that note, fill out our alpha signup form if you’re interested in using it and we’ll get back to you pending capacity. And if you’re already onboarded, we love hearing from our users, so let us know about any bugs you’re experiencing or other features you’d like to see!

We founded Coherent to enable developers to effortlessly build web3 applications. No rate-limiting, no complicated transaction hashes to decipher - instead, we’ll be reliably providing high-fidelity, multi-chain data purposefully parsed to be quickly understandable and immediately usable. Our vision is to be the central platform for all Web3 developers where useful, user-centric data across all chains can be easily obtained.

Today we’re excited to announce our $4.5 million seed round led by Kindred Ventures, Foundry Group, and Matchstick Ventures. This team has deep knowledge of building both in web3 as well as traditional API infrastructure, and they’re the perfect partners as we think about building and scaling Coherent.

Also joining the round: Coinbase Ventures, Awesome People Ventures, Draft Ventures, Moonbase Capital, Chapter One, Istari Ventures, Rob Witoff, Dan Romero, Justin Mart, Brenner Spear, Patrick Chang, Michael Montano, Christian Strat, Alex Treece, and several others.

We’ve also entered into a strategic partnership with Alchemy, where our team will be working closely with the Alchemy team to develop and distribute our API products.

Lastly, we’ve launched our alpha! Reach out to us on Twitter @coherentapi or fill out this form so we can get you onboarded. And if working on these kinds of problems sounds interesting to you, we’re hiring a few more senior engineers, so reach out if you’d love to join along for the ride.