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Spruce lets users control their data across the web. We believe that the world is evolving toward one based on cryptography, networks, and digital economies that are user-controlled. Today, the dominant use case for user keys is the signing of blockchain transactions, but we think this barely scratches the surface of what is possible. Soon, the entirety of a user’s digital interactions will be based on their keypairs, and we’re unlocking this transition with our constellation of products. We meet users where they are, and empower them to use their existing keys to Sign-In with Ethereum, manage their digital identity, private storage, and more.


Spruce wants to encourage the creative use of Sign-In with Ethereum to build rich Web3 applications.

🏆 Spruce will be awarding teams that use Sign-In with Ethereum in their applications to meaningfully gate usage and access in certain ways, contribute to or extend our existing open-source libraries, or is generally a part of the core application flow.


  • 🥇 1x $1,000 for best use cases that use Sign-In with Ethereum for a meaningful workflow in an application.
  • 🥈 2x $500 for additional use cases in projects that integrate and use Sign-In with Ethereum.
  • 🧠 1x $1,000 for any meaningful contribution to a new or existing Sign-In with Ethereum library (such as extending our open source Discourse library).