I have coded a bot that can watch and sweep brainwallet address (or any known address and it's private key) instantly (within few hundreds milliseconds or less) if any funds are deposited on them.
Just like this well known BTC address for example : https://www.blockchain.com/btc/address/1HZwkjkeaoZfTSaJxDw6aKkxp45agDiEzN. Where funds were swept instantly after been deposited.

Can give proof via telegram, if anyone is interested, contact me on telegram @yvanolo

The price is to be discussed with me. We can use escrow eventually.

Thank you.