Ethereum: In Getwork, how does one calculate the value of Hash1?

Understanding Ethereum’s Hash1 field in Getwork -u

As you are aware of the upcoming changes in Bitcoin’s Block template, also known as the “Getwork” system, we were all curious how it would affect the various components of blockchain. One such component is the field of hash1, which has been part of the Ethereum block template since its inception.

In this article we will enter the Getwork world and explore how to calculate the value of hash1 in Ethereum.

What is Getwork?

Getwork is a system designed to improve the performance and scalability of bitcoin transactions. It was introduced in 2017 as an alternative to the traditional algorithm of consensus evidence of work (POW) used by Bitcoin. The main goal of Getwork is to increase the speed of the block without sacrificing safety.

block template and getwork

In the Ethereum, the block template consists of several fields used to build a new block. One of these fields is hash11 ', which is an 8-bass string that represents the first 64 bits of the previous block.

Here's how it works:

• Blockhash: Hash current block

• PREVOBLOCKHASH: Hash previous block (used to calculate hash1)

• Parthash ‘: hash block that is this new block child (optional)

• maturity: The whole number that states how confirmation has received the block before being mined

The hash1 field is calculated by HashingBlockhash, Pre -Bockhash, and if desired,Rodenthash '. This hash is then used to build a new block.

Calculationhash1in Getwork

To calculate the value ofhash1in Ethereum, you need to know the following:

• Hash previous block (Blockhash)

• Hash parent block (if scheduled)

Here's an example of how to calculatehash1using these values:

Javascript

Const blockhash = ‘…’; // hash current block

Const Parentblockhash = ‘…’; // optional: hash parental block

Const Pre -Bockhash = Kripto.createhash (‘Sha256’). Update (blockhash) .digest (‘hex’);

Const Parentblockhashifprovided = Parentblockhash? Crypto.createhash (‘Sha256’). Update (materblockhash) .digest (‘hex’): null;

Const Hash1 = Kripto.createhash (‘Sha256’). UPDATE (PREVOBLOCKHASH + Parentblockhashifsurided) .digest (‘hex’);

`

In this example,PREVOBOBLOCKHASHis a hash of the current block, A Parentblockhashifsudred ‘is the hash of the parent block (if provided).

Why calculate hash1?

Calculation hash1 may provide several advantages:

* Improved block check : Knowing the hash of the previous block, you can check that the new block has been properly confirmed and not threatened.

* Improved security

: hash1 helps prevent attacks such as a reproduction attack by demanding a multiple blocks before a new one can be created.

Conclusion

In Getwork, calculating hash1 in Ethereum includes Hashing hash, the parent block (if foreseen) and finally, calculate the resulting hash. This procedure provides several advantages, including improved block check and improved safety. Understanding how to calculate hash1 'can help you better appreciate the complexity of Ethereum blockchain.

Keep in mind that, as Getwork develops, the design can change and new challenges will occur. It is important to stay in progress with the latest achievements and to adjust your understanding accordingly.

I hope this explanation has helped you understand howhash1 ‘works in Getwork! If you have any further questions or concerns, feel free to ask.

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