The passhrase below was used as a Brainwallet to generate the given address.
Address is based on a non-compressed private key. Passphrase is based on a merkle root.
You can check the private key is indeed known by verifying the following signed message when running your own node:
Alternatively you can use this link to verify the message online. Values needed:
By using a weak brainwallet the private key for address 1CSsutw7JFAj66AkyMPsDVvZ7yi2aoNyh2 has been compromised.