OpenEthereum in blockchain

The Rust programming language was used to create OpenEthereum, an implementation of the Ethereum protocol. Originally called Parity Ethereum, it has since changed to an ownership and maintainer model based on DAO. One important and effective Ethereum network client was OpenEthereum. One of Ethereum’s initial founders, Gavin Wood, co-founded Parity Technologies, the firm that developed it. The goal of OpenEthereum was to become the best safe, lightweight, and quick Ethereum client.
What is an Ethereum Client?
An Ethereum client is an application that uses the Ethereum protocol. By connecting your PC to the Ethereum network, nodes, or participants, are able to:
- Preserve a copy of the blockchain or a portion of it.
- Confirm and spread the transactions.
- Ensure that blocks and transactions are valid.
- Announce any new transactions.
- Use smart contracts and deploy them.
- Engage in consensus-building activities like mining or validating.
- Engage in communication with other network nodes.
- Communicate with the blockchain with a JSON-RPC API.
OpenEthereum’s History and Development
- Originally known as Parity Ethereum, Parity Technologies was the developer of OpenEthereum. They said it was much lighter and much faster than Geth.
- Switch to OpenEthereum: In late 2019 or early 2020, Parity Technologies declared that they would stop serving the client in order to concentrate on other initiatives, mainly Polkadot. Early in 2020, the codebase was released to the public and given the new name OpenEthereum. It persisted as an OpenEthereum DAO (Decentralised Autonomous Organisation) project led by the community. Gnosis and other organisations backed its stewardship as well.
- Historical Background: “Parity Hack” Prior to its renaming, Parity (the corporation) was linked to a 2017 security incident in which Ether valued at about $30 million was stolen. Instead of focussing on the Ethereum blockchain or protocol itself, this “Parity hack” took advantage of a flaw in Parity’s multi-signature wallets, specifically in the source code that allowed users to create their own multi-sig wallet smart contracts.
Key Features OpenEthereum
Throughout its existence, OpenEthereum was acknowledged for a number of cutting-edge features and technical prowess:
- Written in Rust: It was created with the Rust programming language, which is renowned for its efficiency, speed, and memory safety.
- Performance and Efficiency: It was built with modularization, high performance, and a minimal memory and storage footprint in mind. Its CPU and memory usage was lower than that of other clients.
- Fast Synchronization (Warp Sync): One important innovation was “Warp Sync,” which allowed for synchronization in hours rather than days, making it far quicker than with conventional complete sync techniques.
- Modular Codebase: OpenEthereum’s codebase made it simple to customise and integrate into services or products.
- Advanced CLI-based Client: This client provided a robust command-line interface (CLI) for communicating with the node.
- API Support: By default, WebSockets and JSON-RPC HTTP servers were running on ports 8545 and 8546, respectively. This was developer-friendly because it supported many APIs and was completely configurable. The well-known web browser plugin MetaMask may expose an RPC connection to networks that were operated by clients such as OpenEthereum.
- Network and Consensus Support: The Ethereum mainnet, several testnets (such as Goerli), and private networks were all supported. Aura, Clique (Proof-of-Authority/PoA), and Ethash (Proof-of-Work) were among the various consensus techniques it supported.
- Permissioning Features: It had sophisticated permissioning features, such as limiting the types of transactions or addresses that nodes may connect to, configuring validator sets for PoA/PoS chains, whitelisting accounts for zero-gas transactions, and setting petrol pricing per account.
- Client Diversity: An essential component of network security, OpenEthereum helped to preserve client diversity on the Ethereum network. If other clients were not impacted, a flaw in one client wouldn’t completely destroy the network.

Why OpenEthereum Was Popular
OpenEthereum’s popularity was fuelled by its
- It was lightweight, requiring fewer resources than Geth.
- Flexibility: There were many setup possibilities available.
- Developer-friendly: Fit for executing validators, archival nodes, or full nodes in PoA networks.
- Enterprise-readiness: It was applied to Ethereum networks that were private and consortium.
- It was commonly used by businesses implementing private chains, developers testing smart contracts, wallets in need of dependable nodes, and exchanges.
Openethereum vs Geth
In addition to Geth (Go Ethereum), Besu (Java), and Nethermind, there were other client software alternatives, including OpenEthereum. A comparison with Geth, the most popular client, is shown below:
Feature | OpenEthereum (formerly Parity) | Geth (Go Ethereum) |
Programming Language | Rust | Go |
Performance | Known for being lightweight, fast, and high-performance. | Stable and widely used, generally good performance. |
Synchronization | Featured “Warp Sync” for very fast initial synchronisation. | Supports various sync modes (full, fast, snap). |
Architecture | Modular, with a focus on customizability. | Monolithic, but undergoing modularization. |
Features | Advanced tracing, extensive permissioning. | Broad feature set, built-in key management, private networks. |
Community & Support | Was community-maintained but is now deprecated. | Actively developed and maintained by the Ethereum Foundation with a large, active community. |
Current Status | Deprecated and no longer maintained. | Actively maintained and the dominant Ethereum client. |
End of Life and Deprecation
In March 2022, OpenEthereum formally announced that company was going out of business. Several considerations led to the decision to deprecate:
- The increasing complexity of Ethereum made maintenance difficult, especially for a codebase that was more than five years old.
- The project was confronted with a shortage of development resources.
- Change in Focus: Polkadot became Parity Technologies’ main area of concentration. The company that had been managing OpenEthereum, Gnosis, likewise changed its emphasis to help more recent customers, such as Erigon.
- Emergence of New Clients: A more optimistic future was presented by the emergence of newer clients like Nethermind, Besu, and Erigon, who significantly improved disc footprint, sync speed, and modularity.
- The Merge: The Ethereum Merge, which switched from Proof-of-Work to Proof-of-Stake, was not supported by OpenEthereum, forcing users to utilise alternative execution clients.
What to Use Now
OpenEthereum is no longer being actively maintained or updated due to its deprecation, and its repository has been archived. Users were encouraged to switch to alternative clients that were actively supported. Alternatives that are suggested if you wish to operate an Ethereum node right now are:
- The most popular client is Geth.
- Nethermind: Known for its modernity and performance.
- Besu: Java-based and geared towards enterprises.
- Gnosis currently actively supports Erigon (previously Turbo-Geth), a “next-generation” Ethereum client.
Feature | Description |
---|---|
Name | OpenEthereum |
Formerly | Parity Ethereum |
Language | Rust |
Type | Ethereum client |
Purpose | Run nodes, validate transactions, interact with blockchain |
Strengths | Fast, lightweight, advanced configuration |
End of Life | Announced in March 2022 |
Recommended alternatives | Geth, Besu, Nethermind |