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Hyperledger Besu is an enterprise Ethereum client written in Java under the Apache 2.0 license. The best installation option for Windows users is to install via binary distribution or build from source. If you must use Docker, just use Linux or MacOS for a better Docker experience.


Besu requires Java SDK version 11 or greater to compile.

Check Java is installed:

$ java — version 
java 15.0.2 2021–01–19 Java(TM) SE Runtime Environment (build 15.0.2+7–27) Java HotSpot(TM) 64-Bit Server VM (build 15.0.2+7–27, mixed mode, sharing)

Download and install binary

Binary releases hosted and downloadable from Bintray. View all releases…

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We are pleased to announce ETC Cooperative’s 2020 Retrospective. The mission of the ETC Coop is to steward the development of the Ethereum Classic protocol and to support the growth of a mature ecosystem around that protocol.There are three pillars to this mission:

This 2020 retrospective for the ETC Coop is organized around these three pillars — Adoption, Collaboration, and Governance. The retrospective is another product of the revamp of the ETC Cooperative’s governance and transparency which was put in place at the Annual General Meeting held on 17th March 2020.

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ETC Cooperative is supportive of the proposal for an Ethereum Classic Treasury to establish sustainable funding for independent teams to both maintain the core protocol and evolve the Ethereum Classic platform, as well as grant pools for wider community development. IOHK brought the Treasury proposal back on the table in ECIP-1098 and implementation of a treasury is live on the Sagano Ethereum Classic testnet. We’re writing this to substantiate our support for this proposal and hopefully answer some questions.

Blockchain protocols are complex systems that are expensive to research, develop, and to maintain in an increasingly competitive market. Ethereum Classic…

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Hyperledger Besu is an open-source Ethereum/ Ethereum Classic client developed under the Apache 2.0 license and written in Java. In this tutorial, we’ll install Hyperledger Besu on Linux.


Besu requires Java JDK 11+ to compile.

Installing OpenJDK 11+

Update packages:

sudo yum update # sudo apt update

Besu requires Java 11+ to compile. Check if Java is installed:

java --version

If Java 11+ is already installed, then it should look like this:

$ java --version
openjdk 11.0.9 2020-10-20 LTS
OpenJDK Runtime Environment 18.9 (build 11.0.9+11-LTS)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.9+11-LTS, mixed mode, sharing)

Install OpenJDK 11:

Optional JDK…

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The Ethereum Classic community is riddled with ideas and new contributors wanting to take Ethereum Classic to new levels. Ethereum Classic core devs and participating stakeholders met on August 28, 2020, in a productive meeting to discuss a variety of Ethereum Classic Improvement Proposals (ECIPs). Participating organizations included Byzantine Fault, ChainSafe, Chipper Robotics, Ethereum Classic Core, Ethereum Classic Cooperative, Ethereum Classic Labs, RootStack, VeriBlock, and a dozen other members from the community.

The agenda

Due to the time limit, not all proposals were discussed but will be entertained in further meetings to be announced.

Main actions items & decisions

The Ethereum Classic network underwent a deep chain reorganization last night as a result of a 51% attack on the network. Parity/ OpenEthereum nodes could not correctly process the reorganization causing Parity/ OpenEthereum nodes to become out-of-sync from the main network. We are providing this information so that the ETC community and stakeholders have accurate information. We continue to investigate the issue, and we will provide more information as it becomes available.


If you are a miner/pool, then ONLY use Core-geth for your Ethereum Classic nodes because Core-geth supports mining applications. …

ETC Core recommends that new and existing ETC node operators, exchanges, miners, and wallet providers implement Core-geth or Hyperledger Besu clients.

Core-geth & Besu


If you’re running an ETC node, it is recommended that you use or plan on transitioning to Core-geth or Besu, which are actively maintained by ETC protocol developers.

Migrating from Parity (OpenEthereum) to Core-geth — Additional guidance.

Why Is This Important?

Hard-forks, features, and bug fixes will continue to be implemented in Core-geth and Besu. Using these actively maintained clients will help ensure proper operation of nodes as the Ethereum Classic network grows. …

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The first half of the year achievements

In the first half of the year, our team kicked ass, contributed to 2 hard-forks on Ethereum Classic along with new product releases (v1.0.0 and beyond), existing project improvements, and an abundance of collaboration with other blockchain projects with much more to be announced this year.




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Raspberry Pi is a small single-board computer that can be used to run a local Ethereum node. While many users operate nodes with cloud service providers, this can be expensive over time, especially for full nodes of the mainnet, but Raspberry Pi has a low barrier to entry to get started with a local node setup. Raspberry Pi, and other single board computers, consume far less energy than a traditional server or desktop machine and a Raspberry Pi’s storage can be expanded through external hard drive solutions; NAS, RAID, and other external storage.

What you’ll learn

Hospital price gauging is no mystery. I’ve just started getting in the habit of requesting itemized receipts from any medical services and surprized about the charges you don’t initially see. When I did request an itemized receipt I saw clear price gauging. For privacy purposes, I’m only talking about the prices and have documentation to back it up.

I requested an itemized receipt for 2 accounts that had around 10–15 items on each account. So, let’s say a list of 30 charges. I checked the healthcare blue book and other healthcare price data for each item and discovered around 3/30…

Stevan Lohja

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