user56098: I have some questions regarding transactions,
prevTxHash in Inputs of a Transaction, does this carry the hash of previous transaction in block or hash of the prev transaction by the same private key.

user2306: 
I have some questions regarding transactions, prevTxHash in Inputs of a Transaction, does this carry the hash of previous transaction in block or hash of the prev transaction by the same private key.

No, it's the hash of the transaction whose output you are currently spending. Suppose I wanted to spend this transaction. I would include 961763d1c918e654c0ec922eb0aeb7f7e951e9bfae5398ec52e93fa0576c1f74 as the previous transaction hash in order to identify which output I am spending.

56098: <p>I have some questions regarding transactions,
<strong>prevTxHash</strong> in Inputs of a Transaction, does this carry the hash of previous transaction in block or hash of the prev transaction by the same private key.</p>
 2306: <blockquote>
  <p>I have some questions regarding transactions, prevTxHash in Inputs of a Transaction, does this carry the hash of previous transaction in block or hash of the prev transaction by the same private key.</p>
</blockquote>

<p>No, it's the hash of the transaction whose output you are currently spending. Suppose I wanted to spend <a href="https://blockchain.info/tx/961763d1c918e654c0ec922eb0aeb7f7e951e9bfae5398ec52e93fa0576c1f74" rel="nofollow noreferrer">this</a> transaction. I would include 961763d1c918e654c0ec922eb0aeb7f7e951e9bfae5398ec52e93fa0576c1f74 as the previous transaction hash in order to identify which output I am spending.</p>
