MPEX from Blocknative

Introducing Mempool Explorer: Because the Mempool Matters

Blocknative

By Blocknative in blockchain, Mempool, Ethereum on September 23, 2020

At Blocknative, we believe that the mempool matters. This is because mempool conditions impact every transaction globally. And, as demonstrated in recent weeks, the mempool is a constant source of vulnerabilities, arbitrage opportunities, complexity, and more. For the past several years, the Blocknative team has been focused on giving builders and traders the tools they need to make working with mempool data as easy – or even easier! – than every other aspect of the Web3 ecosystem. 

Against this backdrop, we are excited to introduce Blocknative Mempool Explorer™️ – a net-new way to build real-time streams of in-flight transaction data.

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Blocknative Commercial Plans

Introducing Blocknative Commercial Plans

Blocknative

By Blocknative in blockchain, Mempool, Ethereum on September 3, 2020

Today, we are excited to introduce commercial pricing plans that provide powerful, production-ready mempool capabilities at scale. Blocknative operates a global mempool data platform that is accessible via our API, our SDK, and our Notify.js and Onboard.js front-end libraries.

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Evidence of Mempool Manipulation on Black Thursday: Hammerbots, Mempool Compression, and Spontaneous Stuck Transactions

Blocknative has uncovered evidence that the MakerDAO liquidations on March 12 and 13 were an engineered event. This evidence is derived from the mempool, the pre-chain area miners use to create blocks. The mempool is an often overlooked – and commonly under-appreciated – aspect of the Ethereum ecosystem.

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From Stablecoins to Crypto Dollars

From Stablecoins to Crypto Dollars

Earlier this year, we asked When One Billion ETH Transactions? And as part of our focus on transaction growth, we began digging into the global stablecoin market — which is now sustaining >$1 billion per day in transaction value. 

To better understand the growth of the global stablecoin market, we leveraged data from Coin Metrics to create a new report: 

Download The Report

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API for Bitcoin and Ethereum

Now You Can Monitor the Bitcoin Mempool with Blocknative’s Notify API

Chris Meisl

By Chris Meisl in blockchain, Notify, Bitcoin on April 17, 2020

Every minute, blockchains move over $2 million in value. But understanding and acting on this in-flight value is challenging for even the most sophisticated and well-resourced of teams. Before any transaction can be confirmed on-chain, it must move through the mempool. As we have previously discussed, this is an often overlooked portion of the blockchain ecosystem. 

At Blocknative, we run Notify — a global node network that captures and organizes mempool transactions in real-time. Historically, we have focused on the Ethereum blockchain. Today, we are excited to announce the addition of Bitcoin support to our distributed node infrastructure.

Now developers can access real-time state change notifications for both Ethereum and Bitcoin transactions with a single, consistent API.

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Deploying Value On-Chain With Gold-Backed NFTs

Blocknative

By Blocknative in blockchain, usability, Case Study, Dapp, DeFi, Notify on April 15, 2020

What would coin collecting look like in the digital world? 

Jesse Johnson became obsessed with answering this question. And after he co-founded Mintable — a platform that makes it easy to mint and manage NFTs — he set to work to answer that question. 

Given his background in NFTs (non-fungible tokens), Jesse wanted to explore the idea of NFTs with intrinsic value. This eventually led to the creation of Bullionix — a decentralized gold mint where anyone can use Digix gold tokens to create NFTs. EachNFT minted on Bullionix has a specific weight of gold staked to it. Bullionix is the first crypto project to combine scarce NFTs with digital gold. 

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Support Custom Derivation Paths On Hardware Wallets

Easily Support Custom Derivation Paths for Ledger and Trezor Wallets

Chris Meisl

By Chris Meisl in blockchain, onboard.js on April 1, 2020

While you can hold every private key in the palm on your hand, there are a staggering number of possible wallet addresses that can be generated from a seed phrase. And  advanced users may take advantage of these possibilities by using custom derivation paths on their hardware wallets to select new addresses. 

The ability to choose a custom derivation path is popular among developers (who need to access test nets) and whales (who have many accounts that they use to secure funds). And support for hardware wallets and custom derivation paths is a commonly requested feature for leading applications.

Having a native hardware wallet integration was the most requested feature for the 
Gnosis Safe multisig. Thanks to Blocknative, we were able to deliver an easy and trusted way to use a Ledger or Trezor device with a multisig using Onboard.js.

Lukas Schor, Product Manager For Gnosis Safe

The latest release of Onboard.js enhances our hardware support module, adding the ability to choose from common derivation paths or enter a custom derivation path. Read on to learn about what custom derivation paths are and why supporting them matters. 

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Mastering the Mempool

8 Lessons to Help You Master the Mempool

We want to wish the entire community well during the COVID-19 pandemic. While things are turbulent right now, we wanted to share a new post that dives deep into the mempool so that you can dig into an important part of the Web3 ecosystem.


Blockchains are transaction machines. But on-chain data represents value-at-rest — confirmed transactions. While pre-chain, or mempool, data explores value-in motion — transactions in flight. 

To date, the industry has largely focused on value-at-rest. This is an important piece of the Web3 puzzle. But for any transaction to be included in a block, it must move through the mempool. And unlike the blockchain — which acts as a definitive record — the mempool is chaotic, fragmented, and often unpredictable. 

In the course of building infrastructure to monitor the mempool, we've learned a lot about how it works. And at ETHDenver 2020 Matt Cutler, Blocknative's CEO and co-founder, shared some important lessons in his talk Mastering the Mempool:

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Easily support hardware wallets

Does Your Web3 App Support Hardware Wallets?

Chris Meisl

By Chris Meisl in blockchain, onboard.js on March 12, 2020

Hardware wallets — such as Ledger and Trezor — are popular among crypto whales and traders. They provide an additional safeguard for digital assets. But that extra layer of protection presents a challenge for Web3 developers — as hardware wallets do not have any built-in user interface for selecting, viewing, and switching accounts or networks. 

Before now, if you wanted your product to support hardware wallets, you had to build a custom user interface from scratch. This takes serious time and effort.

Thankfully, those days are gone!

We are excited to introduce the latest update to Onboard.js — Blocknative’s open-source user onboarding framework. A new hardware wallet module makes it easy to add support for hardware wallets for users of your Web3 application.

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When will ethereum reach 1 billion transactions?

When One Billion Ethereum Transactions?

Web3 is taking root — transitioning from proof-of-concepts to enterprise-grade solutions. As specialists in the global mempool and the associated value in motion, the team at Blocknative looked back at 2019 and wondered, "How many public blockchain transactions have ever happened?" This quickly lead to "How many new public blockchain transactions can we reasonably expect in the coming years?" 

We were surprised that, as far as we could tell, no one had previously published answers to either of these questions. So we set off to generate our own results. And today we're happy to share our findings.

The results were surprising, exciting, and encouraging.

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The Mempool Data Platform

Learn how Blocknative help exchanges, protocols, wallets, and traders to monitor and repair transactions in real-time.

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