What is Bitcoin Mining ? Which Cryptocurrency wallet is the best?

What is Bitcoin Mining ? Which Cryptocurrency wallet is the best?
The DB solution is ideal for Crypto Managers and Digital Assets Custodians , looking for convenience and streamlined operations with zero compromise on security.
The DigitalBank is enabling a new era in financial services and crypto solutions , safeguarding crypto assets for Banks, Hedge Funds and High Net Worth individuals.
DB is providing unprecedented digital asset security to institutional investors.
DB Provides Fully Insured Cryptocurrency custodianship for Institutional Investors , hedge funds and pensions, banks and investment firms  . 
The DigitalBank Technology brings the final solution to the public who needs to fully secure his digital assets and manage them easily on a simple interface.
It brings a solution to banks that will be able to offer ultra secured cryptocurrency storage combined with Crypto management tools.
It supply the insurance companies with a huge new potential business of insuring cryptocurrency holdings of their clients.
DigitalBank means Guaranteed Lifetime Account Access. DigitalBank is fully decentralized: No Institution , No Physical Address , No servers , No data storage :100% Paperless . 100% Nameless
DigitalBank is the safest Cryptocurrency “wallet “available: the only Real Safe Haven of Bitcoin and Crypto Investors with a full scale cryptocurrency exchange , for trading securely all major crytocurrencies
The DigitalBank is the real solution to millions of people seeking private secured and ultra confidential online banking .
The DigitalBank is the only real solution to cash Bitcoin riches .
With the DigitalBank technology your crypto money is safer than in any bank vault on earth .The private key is never stored on the device itself and is never transmitted anywhere so there is no risk that someone can obtain information through forced entry.
Even if your DigitalBank Vault Device,  is seized or stolen, there is nothing that anyone can do to extract the private keys because they are not on the device in the first place. If the DigitalBank device is taken apart and forensically analyzed the private keys cannot be retrieved .