Cypherium Adopts HotStuff Consensus Algorithm To Drive Increased Performance And Security

HotStuff solves scalability issues faced by previous Practical Byzantine Fault Tolerance systems. Update follows recent launch of Mainnet Preview and partnerships with Amazon Web Services and IBM


New York City, NY — Cypherium, the enterprise-focused blockchain platform that prioritizes scalability and decentralization, has adopted VMware’s open-sourced HotStuff consensus algorithm to drive increased performance and security. A leader-based Byzantine fault-tolerant (BFT) replication protocol, HotStuff reduces the communication complexity of  Practical Byzantine Fault Tolerance (PBFT) from quadratic to linear, prioritizes responsiveness, and combines the benefits of asynchronous BFT solutions with the scalability that, to date, has remained out of reach.


Sky Guo, Founder and CEO of Cypherium said,

HotStuff is the most advanced BTF algorithm designed to date and provides significant performance benefits when compared with other consensus mechanisms. Its design also makes it very simple to implement, which makes it more robust than alternative systems. All of this is absolutely invaluable when it comes to delivering a fast and reliable blockchain solution to users who require a truly scalable solution capable of processing thousands of transactions per second, combined with absolute reliability, and all without sacrificing decentralization.”


HotStuff is built around a novel framework that forms a bridge between classical BFT foundations and blockchains. Since the introduction of PBFT, numerous solutions have been built around its two-phase paradigm which enables a stable leader to drive a consensus decision in two rounds of message exchanges. The first phase guarantees proposal uniqueness through the formation of a quorum certificate (QC) consisting of a certain number of votes. Following this, the second phase guarantees that the next leader can convince replicas to vote for a safe proposal. This design presents a number of inherent scalability challenges which HotStuff counters by leveraging a three-phase core that allows a leader to pick the highest QC it knows of and introducing a second phase that allows replicas to “change their mind” after voting in the phase, without requiring a leader proof.


Comprising just half a page of code, the simplicity of HotStuff’s design enables it to be integrated as a concise protocol for building large-scale replication services, ideal for the needs of Cypherium’s user base.



Cypherium recently launched its Mainnet Preview to enable public users to experience the full functionality of the system prior to the full Mainnet launch. Existing in parallel to Cypherium’s private enterprise blockchain, the Mainnet Preview is one of the first fully decentralized, permissionless high-speed blockchains and is capable of processing upwards of 5,000 transactions per second –  essential for bandwidth-intensive applications such as payment systems, ledger keeping, and inter-company resolution.


The company also recently partnered with a number of major corporations, including Amazon Web Services and IBM. Its Initial Mainnet Offering (IMO), which will allow users of the network to purchase tokens to operate it and play an active role in the future development of the platform, is scheduled to take place later this year.   

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