Coinbase account is not valid collateral because it has 0 worth and can be easily recovered. Please do check this thread:
What is considered valid collateral?So please do offer valid collateral or lock the thread.
I was figuring due to the abundance of personal information associated with the account that it would be suitable for collateral, including the CC with $500 weekly limit. I'm all for using an escrow to hold funds until the lender has time to change email/password on the account.