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Getting Transactions from Ethereum, Not a Wallet Program, Using bitcoin-rpc

When exploring the Bitcoin protocol with “Bitcoin-Qt”, you can use its API, specifically “bitcoin-rpc”, to get transactions that are not associated with a wallet. In this article, we will cover the process of getting all the transactions in a given block and then getting information about them.

Prerequisites

Before proceeding, make sure you have:

• Bitcoin-Qt installed on your system.

• A working connection to the Ethereum network (you can use the built-in bitcoin-rpc client or external tools like geth).

Get All Blocks and Transactions

To get all the blocks and their transactions, you can use a loop that continuously calls “getblockchaininfo” with the “raw” parameter set to “1”. This will retrieve a list of blocks in JSON format.

import bitcoinrpc
def get_blocks_and_transactions():
rpc = bitcoinrpc.RPC()
block_info = rpc.getblockchaininfo([1000]) 
get the first 1000 blocks
for block in block_info['blocks']:
print(f"Block {block['hash']}:")
tx in block['transactions']:
print(tx ['hex'])

This code will generate a list of transactions associated with each block.

Getting non-wallet transactions

To get non-wallet transactions (i.e. publicly available), they must be retrieved using the RPC call “gettransaction”. This method is more complex as it requires direct interaction with the Ethereum network.

Here is an example Python implementation:

import bitcoinrpc
def get_non_wallet_transactions(block_hash):
rpc = bitcoinrpc.RPC()
tx_list = []
i in range (1, 100): 
retrieve up to 99 transactions for demonstration purposes
try:
transaction = rpc.gettransaction(block_hash, i)['transaction']['hex']
if "from" is not in transaction: 
non-wallet transactions do not have a "from" address.
tx_list.append(transaction)
except exception as e:
print(f"Error retrieving transaction {i}: {e}")
return tx_list

Usage example
block_hash = "your_block_hash_here"
non_wallet_txs = get_non_wallet_transactions(block_hash)
in tx file non_wallet_txs:
print (tx)

This code retrieves up to 99 transactions in each block and prints them.

Important Considerations

When working with bitcoin-rpc, keep the following in mind.

• The “gettransaction” method returns a list of transaction objects containing information such as “from”, “to”, “value”, etc.

• Non-wallet transactions typically do not have a “from” address or other publicly available information. Therefore, this example will only retrieve non-wallet transactions that are directly related to the specified block hash.

Please note that these examples demonstrate basic usage of “bitcoin-rpc” and may require customization depending on your specific requirements. Also, keep in mind that interacting with the Ethereum network can be resource-intensive; always make sure you have enough connections, or consider using more efficient methods such as caching or paging for large data sets.