Chorus One
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Chorus One

OPUS API will significantly speed up the staking operations of any institution.

“Sometimes a bull market, sometimes a bear market, always a builder’s market”Sahil Lavingia

Chorus One was incorporated in 2018 when Proof-of-Stake was still in its nascency. But as all of us have seen, it’s now proven to be more secure, decentralized, and energy-efficient than Proof-of-Work. The maturity and adoption of PoS brought in increasing institutional interest as the low-risk profile of staking acted as a conducive entry point for many institutions who were testing the crypto waters. We covered more on this topic in an article some weeks back. Chorus One has been helping institutions get PoS exposure through our white-label and research services and today we’re extremely excited to announce the launch of OPUS — an API that will significantly speed up and scale an institution’s staking operations. The needs of any institution vary quite a bit and there aren’t many enterprise-ready staking solutions catering to them all. OPUS was designed after months of research and conversations with our existing clients and other crypto-friendly companies, keeping their needs at the center.

Why we launched OPUS -

“Cryptoassets are becoming an integral part of the world’s financial system. They open the possibility for a more efficient and innovative economy. Staking cryptoassets allows participating in this revolution and earning strong returns with minimal risks. At Chorus One, we are grateful to be able to support institutions of all kinds to safely and effectively participate in the Proof-of-Stake economy.”Brian Crain, Co-Founder and CEO, Chorus One

OPUS also follows industry-leading security standards and access to MEV rewards, the latter now being an important factor post the Merge. Here’s a quick overview of OPUS’ primary features -


Security is of paramount importance and one that’s non-negotiable. Hence, OPUS follows a range of security practices like authorizations/authentications using Open ID Connect (OIDC), double signing protection to prevent losses, and all private keys being stored in FIPS 140–2 compliant vaults. OPUS is also non-custodial meaning customers remain the sole possessors of withdrawal keys.


Every client would have a dedicated infrastructure with multi-region redundancy that would also allow them to increase or decrease validators as and when required, depending on the protocol. This is also supervised round-the-clock by our DevOps team for issues and real-time updates can be enabled on Telegram or Slack.


OPUS is designed to be chain-agnostic. Starting first with Ethereum, this will soon expand to other networks so you can use the same interface to interact with multiple networks.


MEV-Boost queries and outsources block-building to a network of block builders. The validators that run MEV-Boost on their nodes will earn maximum rewards that then increase the rewards of all OPUS users too. Since the rewards generated by the non-MEV-Boost validators would be substantially lower, it would be prudent for institutions to partner with solutions that already enable MEV rewards.

That’s not all. We have many exciting features in the pipeline that will be rolled out in the next few weeks. If you’re interested in exploring OPUS API and knowing more, drop an email to



Chorus One is one of the largest staking providers globally. We provide node infrastructure and closely work with over 35 Proof-of-Stake networks.

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Chorus One

Chorus One offers staking services and takes part in building tools and protocols to advance the Proof of Stake ecosystem.