Manual coding bitcoin transactions
Bitcoin is a decentralized open source cryptographic currency that allows users to create and transfer transactions without the need for intermediaries such as banks. One of the main components of the Bitcoin transaction is the SIG scrip, which is used to verify the sender’s identity and ensure the integrity of the transaction.
In this article, we will examine the handcoren coding process of bitcoin transactions using the standard format as defined by the Bitcoin protocol.
Transaction format
Bitcoin’s transaction consists of the following components:
Provhash: previous block hash
Index ': previous transaction index (0 -Indexed)
- Scriptsig: Script signature, used to verify the sender’s identity and ensure the integrity of the transaction
Vsize: the size of the transaction data
Vrix: the sender's public key
- Data
: Transaction Data
Subscriptions for script
The script signature consists of a series of prefixed numbers with "OP_". Each number represents an operation performed in the sender's balance. The most common operations are:
- Op_1
: Set the sender's balance to 0
- Op_2
: Increase the sender's balance according to the value specified in the following transaction data
Here is an example of the script signature:
4a76a51c7f9b6a6aa6a0000000000000000000000000000000000000000000000000000000000
This script signature means that the sender's balance should be defined in 0. In this example, the transaction dataop_2determine the value of 100.
Manual coding bitcoin transactions
To deal with the bitcoin transaction, we need to build a new block and add the necessary components to it.
Here is an example of how to deal with the Bitcoin transaction:
Prohibited:
Previous TX: F5D8E39A430901C91A5917B9F2DC19d1A0E9CEA205B009CA73DD04470B9A6
Index: 0
Scriptsig:
4a76a51c7f9b6aa6a000000000000000000000000000000000000000000000000000000000000
Vsize: 20 bytes (transaction data only)
VPR: 3047023278D0782E2BFC35D41ED29CDAB4EA5EF6DC
data:
Op_1: 0
Op_3: F5D8E39A430901C91A5917B9F2DC19D6D1A0E9CEA205B009CA73DD04470B9A6
This block consists of:
- Provhash
: previous block hash, which is defined as 0 (since we start from scratch)
- Index ‘: previous transaction index, which is 0
Scriptsig: script signature that defines the sender’s balance to 0 and increases your balance by 100 using OP_2
Vsize: the size of the transaction data, which is defined as 20 bytes (transaction transaction only)
Vrix: The Consignor Public Key, which for this example is defined as a hard coded value
- Data
: Signature of a script that increases the sender's balance by 100 using OP_2
Signature and transaction check
To sign a transaction, we need to create a new bitcoin wallet and carry it with our public key. Then we can use the API to sign a wallet to generate a digital signature for a transaction.
Here is an example of how to sign a transaction:
Bitcoin import
Carry your wallet
Wallet = bitcoin.new_wallet ()
Create a new block
block = bitcoin.newblock ()
Configure previous hash and index
Previous_hash = '0'
Index = 0
Add Signature and Script Data to the block
Block.Set_Script GIS (4a76a51c7f9b6a6aa6aa000000000000000000000000000000000000000000000000000000000000000000000000
Block.add_data op_1, op_3, index, 'f5d8e39a430901c91a5917b9f2dc19d19d1a0e9cea205b009ca73ddd04470b9a6', 100)
Subscribe to the block
Signature = Wallet.sign_block (block)
Print a signed block
Print (bitcoin.printblock (block, signature))
`
This code creates a new bitcoin wallet and carries it with our public key. Then it defines a new block and adds the necessary script and data signatures. Finally, it signs the block using the API to sign a wallet and print a signed block.
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