Node deployment could be quite an annoying issue and also complicated cause involves difficult documentation, but here's a pretty easy way to connect to a popular blockchain node Cardano (ADA) via GetBlock's API endpoint 
Cardano is the largest Proof-of-Stake network. It activated smart contracts functionality in September, 2021, so its dApps ecosystem is still in its infancy.
To access Cardano, you first go to GetBlock main menu and ‘Shared Nodes’ tab. Thus, we’re going to work with Cardano’s shared node which works like a dedicated server for your application.
Find Cardano (or ADA) nodes in this list and copy the link to its mainnet endpoint to the Postman terminal.
Then set POST as a type of command and set ‘x-api-key’ before copying the client ID - API key number from the black box pasting the key to the terminal
Then, set ‘raw’ as a type of request and JSON as a way to access Cardano’s API.
Once this is done, move to Rosetta's official website, open the documentation with the network endpoints, then copy the request to the Postman, set the network list to the URL of Cardano’s endpoint and send the request.
That’s how it works!
We also have video tutorials on how to connect to this node and other nodes: https://www.youtube.com/watch?v=pUf9nIcuQes&t=5s&ab_channel=GetBlock
Thank you for watching! Stay tuned and have a great day!
Cardano is the largest Proof-of-Stake network. It activated smart contracts functionality in September, 2021, so its dApps ecosystem is still in its infancy.
To access Cardano, you first go to GetBlock main menu and ‘Shared Nodes’ tab. Thus, we’re going to work with Cardano’s shared node which works like a dedicated server for your application.
Find Cardano (or ADA) nodes in this list and copy the link to its mainnet endpoint to the Postman terminal.
Then set POST as a type of command and set ‘x-api-key’ before copying the client ID - API key number from the black box pasting the key to the terminal
Then, set ‘raw’ as a type of request and JSON as a way to access Cardano’s API.
Once this is done, move to Rosetta's official website, open the documentation with the network endpoints, then copy the request to the Postman, set the network list to the URL of Cardano’s endpoint and send the request.
That’s how it works!
We also have video tutorials on how to connect to this node and other nodes: https://www.youtube.com/watch?v=pUf9nIcuQes&t=5s&ab_channel=GetBlock
Thank you for watching! Stay tuned and have a great day!