Very Basic Question about API

  1. When I use server like , it is safe?
    I mean if i don't use localhost, secret phrase will not leak ? right?

  2. What api can know required time for generating next block?

  3. What's the difference between ecBlockHeight and default height?
    I cannot understand economic cluster BlockHeight.

  1. If you are sending the secret phrase through the API don't trust any external node but yours. I recommend running your own node.
  2. I'm not sure to understand your question. If you are referring about the expected time for the next block I guess your best bet would be to use the API call and check the first generator's hit time.
  3. The economic cluster parameters allow to make sure a given block is present at a given height on the blockchain when sending a transaction. This is useful to detect forks so your transaction won't end up on a forked blockchain.

Thanks for your reply :slight_smile:
Ardor Lite Wallet which is made by MRV777, use external node API.
You mean, Ardor Lite Wallet also dangerous?

I didn't say that.

A proper wallet won't be sending the secret phrase to any node as the transactions should be signed locally and then just broadcasted. That's how the built-in reference wallet works. Ardor Lite claims the same on its web page and it's an open source project, so you can do your own research if you like.

I didn't know that lol.
I need more study. Thanks!!