Ethereum: A client that can run behind a firewall
February 4, 2025Kraken, ATH, ATH
February 4, 2025
Preventing Bitcoin from Syncing with Ethereum Scripts

As someone who uses an Ethereum script that uses Bitcoin’s RPC interface to perform calculations, you are probably aware of the importance of syncing with the blockchain to ensure data integrity. However, there may be times when this syncing process puts an excessive strain on your computer’s resources, leaving little room for other tasks, or even causing system instability. One such scenario arises when Bitcoin is involved in the verification process. This article will provide insight into how you can prevent Bitcoin from syncing with an Ethereum script.
Understanding RPC Synchronization
Before we dive into possible solutions, it is important to understand what happens during the synchronization process:
- Verification: When a node (such as one running the Bitcoin blockchain) starts verifying a new block, it starts verifying various blocks of data, including transactions that were not yet included in the current block.
- RPC Call: As part of this verification process, the node makes an RPC call to the Ethereum network to retrieve the latest state of the blockchain.
- Synchronization: After retrieving all the necessary data, the node updates its local state and then begins rebuilding the entire blockchain from scratch.
Configuring or Using Specific RPC Calls
There is no direct configuration setting that allows you to completely prevent Bitcoin from synchronizing with the Ethereum script. However, there are a few options you can explore:
eth_blockchain_id: This is not directly related to preventing synchronization, but to identifying the blockchain being used. You can set this variable in your script before making any RPC calls.
eth_block_numberandeth_block_hash: If you can control when your Ethereum script starts, setting these variables would allow you to temporarily bypass the block verification process while still requesting data from other sources (such as the local cache or another node’s blockchain).
blockchain.confsettings: In advanced configuration, you can specify how Ethereum nodes should retrieve information from different parts of the network.
- Using
eth_get_latest_block: This function is more of a data request than a synchronous RPC call. It does not actually verify blocks and does not use significant CPU resources compared to direct calls likeeth_gettransaction.
- Setting
max_gas: By setting a lowermax_gaslimit, you can reduce the amount of computation required during block verification.
- Using
eth_unconfirmedtransactionlistfor less synchronous RPC calls: If your script does not need to retrieve transaction data immediately, but rather verify transactions and then continue with another operation, using this feature can be more efficient in terms of CPU usage.
Example Code
To illustrate the use of some of these techniques, consider the following example:
from eth import client as EthClient
def run_script():
Configure the Ethereum clientclient = EthClient()
try:
If necessary, retrieve the latest transaction data (e.g. for verification)transaction_data = client.eth_unconfirmedtransactionlist(max gas=1000)
Process the retrieved transaction data hereprint("Processing:", transaction_data)
except for this exception:
print(f"Error: {str(e)}")
Example of using without synchronizationrun_script()
Lower max_gas limit for less synchronous RPC callsclient = EthClient(max_gas=500)
In this example, The “eth_unconfirmedtransactionlist” function retrieves transaction data that was not included in the current block. This approach can be advantageous if you are performing calculations before verifying transactions.
