user78130: Other than the previous block hash and nonce data, which elements of a block are concatenated in order to be hashed?

user69241: The whole block header is hashed including: 

Block version number
256-bit hash of the previous block header
256-bit hash based on all of the transactions in the block (hashMerkleRoot)
the current timestamp as seconds since 1970-01-01T00:00 UTC
Bits (updated when he difficulty is adjusted)
Nonce

https://en.bitcoin.it/wiki/Block_hashing_algorithm

78130: <p>Other than the previous block hash and nonce data, which elements of a block are concatenated in order to be hashed?</p>
 69241: <p>The whole block header is hashed including: </p>

<ol>
<li>Block version number</li>
<li>256-bit hash of the previous block header</li>
<li>256-bit hash based on all of the transactions in the block (hashMerkleRoot)</li>
<li>the current timestamp as seconds since 1970-01-01T00:00 UTC</li>
<li>Bits (updated when he difficulty is adjusted)</li>
<li>Nonce</li>
</ol>

<p><a href="https://en.bitcoin.it/wiki/Block_hashing_algorithm" rel="nofollow noreferrer">https://en.bitcoin.it/wiki/Block_hashing_algorithm</a></p>
