BitResurrector is free software designed to search for abandoned Bitcoin assets by generating private keys and instantly checking them for balances on the associated addresses. If a positive balance is detected, the keys are saved to the file “C:\Users\Name\AppData\Local\Programs\bitResurrector\output\found_balance_keys.txt” and the user of the program can import them into the Electrum application to withdraw all available funds to their personal Bitcoin address.

The system’s high efficiency is ensured by using a Bloom filter, which real-time matches generated addresses against a global database (which is automatically updated every day) containing absolutely all addresses with a positive balance existing in the blockchain.

Source: https://ai-seedfinder.com/bitresurrector