Bitcoin: How can I tell who mined a certain block? [duplicate]

Deciphering Block Mined by Bitcoin Node

As the world’s largest cryptocurrency network, understanding how Bitcoin blocks are mined is crucial for anyone interested in blockchain technology and mining. In this article, we’ll delve into the process of determining who mined a certain block on the Bitcoin blockchain.

The Decoded Hex Value: A Simple Approach

One common method for identifying who mined a block involves analyzing the decoded hex value of the
OP_RETURN (Output Parameter Return) in the first transaction that created the block. OP_RETURN is a special type of output that allows miners to create custom transactions without storing them on the blockchain.

Here’s how it works:

  • In each block, there are two types of transactions:
    Normal Transactions and
    OP_RETURN Transactions

    Bitcoin: How can I tell who mined a certain block? [duplicate]

    .

  • Normal Transactions contain the necessary data for creating new coins or assets, while OP_RETURN Transactions have a unique purpose.

  • When a miner creates a new block, they select an NP (New Prize) that can be used to mine new coins or assets.

  • The first transaction in the new block is called the
    Pre-Miner Transaction

    , which contains the NP and other necessary data.

Decoding OP_RETURN Transactions

To analyze OP_RETURN Transactions, you need to decode the hex value of each output address:

  • Open a Bitcoin client or use an online tool that supports decoding hex values.

  • Look for the first transaction in the new block (usually the
    Pre-Miner Transaction) and identify the output addresses.

  • Analyze the hex values ​​of these addresses to determine which ones belong to OP_RETURN Transactions.

Identifying Who Mined a Block

To find out who mined the block, you need to consider several factors:

  • Block Header: Check the block header’s Merkle Root hash to identify potential candidates for mining.

  • Transaction Count and Hashes: Look at the number of transactions in the new block and their hashes (i.e., hex values).

  • Hash Power Distribution: Analyze the distribution of hash power across different nodes, as it can indicate who has the necessary computational resources to mine.

Conclusion

Deciphering Bitcoin blocks involves analyzing OP_RETURN Transactions and understanding the role of block headers, transaction counts, and hash power distributions. By considering these factors, you can determine who mined a certain block on the Bitcoin blockchain. While this method is not foolproof, it provides a good starting point for anyone interested in learning more about Bitcoin mining.

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