How to Connect to Ethereum

In this guide, you'll learn the following connection methods to the Ethereum infrastructure:

• How to Connect to Ethereum via cURL
• How to Connect to Ethereum via GraphQL
• How to Connect to Ethereum via WebSocket

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Note:

Visit the Ethereum marketplace page to explore Blockdaemon’s Ethereum infrastructure.

How to Access Your Blockdaemon Ethereum Credentials

Once you have purchased your Blockdaemon Ethereum infrastructure, you can access your credentials:

1. Log into the Blockdaemon app.
2. Click Nodes under the Access menu.
3. Select the Ethereum node.
4. Select the Connect tab. You'll find the following information:
   1. Endpoint URL
   2. Auth String
   3. Auth Token

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Info:

Please reach out to [email protected] or your Customer Success Manager for support.

How to Connect to Ethereum via cURL

Here’s how you add your access credentials to a cURL request:

curl -X POST 'YOUR_ENDPOINT_URL' \
  -H 'Content-Type: application/json' \
  -H 'X-Auth-Token: YOUR_AUTH_TOKEN' \
  --data-raw '{
    "id": 1,
    "jsonrpc": "2.0",
    "method": "RPC_METHOD",
    "params": [METHOD_PARAMS]
  }'

• Replace YOUR_ENDPOINT_URL with the Endpoint URL in the Blockdaemon app.
• Replace YOUR_AUTH_TOKEN with the Auth Token found in the Blockdaemon app.
• Replace RPC_METHOD with your chosen RPC method.
• Replace METHOD_PARAMS with the necessary parameters for your RPC.

How to Connect to Ethereum via GraphQL

curl -X POST 'https://YOUR_ENDPOINT_URL/graphql' \
  -H 'Content-Type: application/json' \
  -H 'X-Auth-Token: YOUR_AUTH_TOKEN' \
  --data-raw '{
    "query": "{ block(number: ######) { hash transactionCount timestamp } }"
  }'

• Replace YOUR_ENDPOINT_URL with the Endpoint URL in the Blockdaemon app.
• Replace YOUR_AUTH_TOKEN with the Auth Token in the Blockdaemon app.

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Note:

For details on how to query a node, refer to the Ethereum - How To Query a Node documentation.

How to Connect to Ethereum via WebSocket

wscat -H "X-Auth-Token: YOUR_AUTH_TOKEN" -c wss://YOUR_ENDPOINT_URL:8443/websocket

• Replace YOUR_ENDPOINT_URL with the Endpoint URL in the Blockdaemon app.
• Replace YOUR_AUTH_TOKEN with the Auth Token in the Blockdaemon app.

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Note:

wscat is a tool that can connect over websockets and may need to be installed. You can use your preferred tool of choice.

👋 Need Help?

Contact us through email or our support page for any issues, bugs, or assistance you may need.