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Darwinia Partners with OnFinality to Build the API Service on Crab Network

Crab, the Ethereum-compatible smart contract platform on Kusama, announced the availability of a new API service powered by OnFinality, a Polkadot-focused cloud infrastructure service provider. It will bring powerful, functional developer tools to the Crab ecosystem and streamline the process for developers with existing deployments who want to expand to an additional chain.

📌 wss://darwinia-crab.api.onfinality.io/public-ws


The initial deployment of the integration of OnFinality in Crab Network will allow users to:

  • Query Crab RPC and WSS endpoints immediately using OnFinality’s free API service. You can create a free account key for 500k daily requests to high-performance managed nodes, including ones for Polkadot and Kusama.
  • Quickly stand up dedicated nodes (like Crab or Kusama) to have private access to high-performance WSS and RPC APIs without needing to manage your own infrastructure.

About Crab Network

🔥Crab Network is holding an online hackathon on the DoraHacks platform to fund the development of projects and applications that contribute to the Crab ecosystem and promote overall network growth. The USD 107,000 in the prize pool, will be allocated based on the votes of the judging panel.

Crab is a canary network with real economic value for Darwinia, and its positioning is similar to Polkadot’s Kusama Network. Crab Network has won the 22nd Kusama parachain slot! You can check Crab status through Polkadot{.js}, Subscan, or Subview.

Crab provides smart contract solutions based on DVM (Darwinia Virtual Machine), which is compatible with the EVM (Ethereum Virtual Machine) paradigm at a low level. Therefore, it is easy for projects in the Ethereum ecosystem to migrate to the Crab Smart Chain. (Tips: DVM is built on Frontier with a fully EVM-compatible instruction set and an Ethereum RPC-like external interface.)

About OnFinality

OnFinality is a SaaS platform providing infrastructure services for the Kusama/Substrate community. Their mission is to support blockchain developers of all shapes and sizes by providing infrastructure services so they can focus on building the next DApp.



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As an open cross-chain bridge protocol based on Substrate, Darwinia focuses on the construction of future Internet of Tokens. TG: http://t.me/DarwiniaNetwork