Submitblock input parameters similar to getblock?

Question

I have installed Bitcoin Core on my laptop.

Now open bitcoin daemon and do following:

First i run getbestblockhash to get the last block hash on the Blockchain. We call this hash as BestBlockHash.

After that i run: getblock BestBlockHash 0

The daemon return huge continues hex string data, which is consist of block header and block body(which is the transactions data)

Now my question!

Is this exactly the input of the submitblock function? (which the miner who mine this block, entered this)

My purpose in asking this question is to know exactly what the input of the submitblock function looks like.

Thanks in advance,

I would suspect that this is the case, but if I wanted to verify this, I would call bitcoin-cli help submitblock. I assume that one should then see a help text that points towards BIP22. — Murch, Mar 2 at 22:37
Tanks for your reply, yeawh actually i have tried all these ways, But I am still confused that what is the submitblock input parameters exactly. — Ali, Mar 2 at 22:54

Pieter Wuille · Accepted Answer · 2023-03-04 14:02:41Z

2

The input to submitblock is a full serialized block, encoded in hexadecimal.

Block serialization consists of:

answered Mar 4 at 14:02

Pieter Wuille

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Sorry for my stupid question. But what do you mean by serialized block? Did you mean raw block in binary format? (What you actually mean encoded hexadecimal means that convert this binary data to hexadecimal)
– Ali
Mar 4 at 21:57
1

Yes, all of that. I think of transactions and blocks as abstract data structures (collections of information with amounts and scripts, not bytes). The protocol defines a specific way of converting these data structures to binary data, a process known as serialization (and deserialization).
– Pieter Wuille
Mar 4 at 22:04

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