C.Q.R.D. Crypto QR Database stores all receiving QR codes. When transferring between your own accounts , wallets and/or friends and family. you have the receiving QR codes quick and fast. It categories your QR code so you know what wallet it belongs too. With Receiving QR codes they're always linked to the account and is 100% safe. It is only used to receive and nothing else. Some exchanges and wallets changes the receiving QR codes, but no matter what the previous is always linked to your wallet/exchange. Give it a try and save time from signing on to multiple accounts getting the QR code and hex.