user77559: I found a list of public bitcoin nodes here.  I am using a php library. How can I connect to these nodes via JSON RPC? Is it safe to connect to public nodes? What should I give as username and password?
I had tried a bitcoin node on my ec2 instance. It is taking too long to sync and blockchain size is also increasing. I want to communicate with bitcoin network without running a bitcoin daemon. 

user60443: Not all nodes will have the JSON-RPC enabled, and especially without private credentials. You will probably find a block explorer API much more accessible, because they are built to handle public traffic. There are many blockchain explorers online that have public apis, they are easy to find.

77559: <p>I found a list of public bitcoin nodes <a href="https://bitnodes.earn.com/nodes/" rel="nofollow noreferrer">here</a>.  I am using a php <a href="https://github.com/aceat64/EasyBitcoin-PHP" rel="nofollow noreferrer">library</a>. How can I connect to these nodes via JSON RPC? Is it safe to connect to public nodes? What should I give as username and password?</p>

<p>I had tried a bitcoin node on my ec2 instance. It is taking too long to sync and blockchain size is also increasing. I want to communicate with bitcoin network without running a bitcoin daemon. </p>
 60443: <p>Not all nodes will have the JSON-RPC enabled, and especially without private credentials. You will probably find a block explorer API much more accessible, because they are built to handle public traffic. There are many blockchain explorers online that have public apis, they are easy to find.</p>
