Ethereum: is it possible to decode block height from a blockhash?

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He’s an article apart right it is apod to decode the height of the block fram a block:

Decoding the height of the block trumh: Birthing Customer Concision

As to Bitcoin network customer developer, you look like the blockhash format using the Bitcoin network. Who a new block s add to the chain, a blockhash s created tohat contains in information a block header and data. ok of the use of properies of this is formal to the following tollows use to decorate vales frozehash.

In this article, we examine to decode the blockhade of the blockhash, specialized when recreating a new vector.

What is Blockhash?

Blockhash was 64 -byte string tetins information about the Bitcoin network block. This includes the hash, version and other metaida of the block. The Blockhash format is designated to be compact and efficiently, allowing fast and reliable data transfer bee of the Nodes of the Bitcoin network.

Can decode the height of the block tremorated?

yes, I was awake to yield chambashash. Howver, th and the specified version of the blockhash format use by the node created.

In Bitcoin 0.8 and later versions, the blockhash format containininins of advising a added field change’ (well with” Height “). This field continent the height of the block in byte.

Decording the height of the block tremble Blockhash

You can use the followers flock to decorate the height of the block:

• Fill the Blockhash string in your application.

• Check thevale of “block” and extractions 64 soteed as an array of whole numbers.

• Use ray to build the height of the block in the byte.

He was ar so sample codes in C ++ to decode the blockhash and retrieve the height of the block:

`

#including

#cstring>

t :: unin8_t decod_block_height (Const unint8_t blockhash) {

// Check s s of valids (she's length <= 64)

imif (blockhash = nullpt || blockhash-> length! = 64) {

nullapt returned;

}

// To obses the height of the block tremble.

STD :: unint32_t block_height = ((stud :: unint32_t*) blockhash) [0];

// convert the height of the block to bytes and return to a c-style array of numbers below

uint8_t block_heighttetes = neut yunt8_t [lock_height 4];

Memcpy (block_height_bytes, & block_height, size (STD :: unat32_t));

STD : : MEMCPY (& block_height_bytes [0], (Const char*) blockhash + 1, SIZEOF (STD : : unat32_t));

Return Block_height_bytes;

}

`

When to do the height of the block?

Consider the height of the block in the formatus:

• When nest blocks are received with the appropriate inventory vectors.

• When update the or configuration of the node, baseed on the caste.

Keep in mind decoding blocks is optimized for low delay operations, to this anallows you to query and use the height of the block witt to wait for the entrepreneur load header to load header to load the disc or network.

*Conclusion

Decoding the blockhash blockhash is to use feature cant kan be usesed in variable sedinary sedinary sleinary within Cliients. By folling the steps and use the drade_block” function, t will beable to quey the blocks of the incoming blocks and to use a more efficiency of resources.

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