Bitcoin Core RPC commands: Creating a block with Coinbase address
The Bitcoin Core node (BTC) offers a relaxing API for interaction with the blockchain. A useful function is the ability to create a block using an input law and other parameters. In this article we will examine two separate commands with which you can create the block body and its Merkle root based on your address provided.
command 1: generate block bodies
With the Bitcoin-Cli command line tool used by Bitcoin Core nodes, you can generate a new block with the” Generate block “underc command. The flag “input” is required when specifying an input guess. So you can use this command:
`Bash
Bitcoin -Coin Generateblock -inPut 1M9BTEEV6W9QF5F3PN7Y8J9ZDJC1TF -M 2
This generates a new block with the input address 1m9bteevzkv6w9qf5f3pn7y8j9zdjc1tf and a Merkle -root that can be checked with other commands.
command 2: generate Merkle root
The Bitcoin-Cli tool also offers the” Get block tamplate “underc command, with which you can generate a block template with a specified input law. The -m flag is required when specifying an output format (in this case Merkle root). So you can use this command:
`Bash
BITCOIN -COIN -CLI Getblocktemplate -M 2 -inPut 1M9BTEEV6W9QF5F3PN7Y8J9ZDJC1TF
This generates a block template with the specified input law and you can then use other commands to create the actual block.
Checking the Coinbase address in a new block
To check whether the Bitcoin Cli tool generates a block with your input law, you can use the following command:
`Bash
Bitcoin -Coin -Cransaction -ID 1234567890 -Adress 1M9BTEEV6W9QF5F3PN7Y8J9ZDJC1TF
This quires the blockchain for a transaction with the specified input address. The Bitcoin Cli tool should output the transaction details including the Merkle stems.
Example uses
Let us assume that you want to create a new block that contains your input address 1m9bteevzkv6w9Qf5f3pn7y8j9zdjc1tf and its Merkle root. You can use the following commands:
`Bash
Generate blockbody
Bitcoin -Coin Generateblock -inPut 1M9BTEEV6W9QF5F3PN7Y8J9ZDJC1TF -M 2
Call the block template with Merkle Root
Bitcoin -Coin -Coin -Mlocktemplate -M 2 -inPut 1M9BTEEV6W9QF5F3PN7Y8J9ZDJC1TF> block_template.json
Generate transaction for the new block
Bitcoin -Coin Sendrawtransaction -Txn -Address 1M9BTEEV6W9QF5F3PN7Y8J9ZDJC1TF -outputchain
This creates a new transaction that contains the input guess and its Merkle root, with which a new block can then be created.
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