I lost my second password blockchain.com.

[Chick3nman]

You must crack the second password. BTCRecover is capable of cracking said password and the base64 value you were given is required to crack the password, although I'm not sure if --extract allows for blockchain second passwords, i will need to double check on that. iirc the second password requires a second set of values that must be extracted after the top level master password is already known.