mining principle – How Is it potential that bitcoin blocks retailer transaction information in 32-bit SHA256 strings. How would nodes know the transaction?

How is it potential that bitcoin blocks retailer transaction information in 32-bit SHA256 strings

They do not. Bitcoin blocks retailer the complete transaction information in binary. There isn’t a SHA256 concerned in its storage. SHA256 additionally produces 256 bits of output (= 32 bytes), not 32 bits.

a standard bitcoin block has carried out 2 SHA256 iterations on the uncooked hex information of a single transaction.

There are a number of errors right here.

A block hash is computed by double-SHA256’ing the block header, in binary (not hex). That block header incorporates a variety of fields, together with a model quantity, the hash of the earlier blocks, a timestamp, a nonce, the issue, and a hash of the transactions in it.

That hash of the transaction information, additionally known as the Merkle root, is computed as follows:

• Begin with an inventory of the transaction hashes of all of the transactions within the block, so as. Every hash is the binary results of making use of double-SHA256 on the uncooked binary transaction information (not hex).
• So long as this listing incorporates multiple factor:
  • If the listing has an odd variety of components, duplicate the final factor.
  • Substitute the listing with the listing of obtained by double-SHA256 hashing the concatenation of two consecutive components. This halves the size of the listing.
• The Merkle root is the only remaining factor within the listing (if the block had just one transaction, the Merkle root is the same as the hash of the transaction instantly).

Then it’s saved within the block.

No, the block simply shops the complete transaction information, unhashed. The hashes are solely used to compute the block header, which not directly contributes to the block’s hash.