Try our new Version with native Segregated Witness and Bitcoin Cash addresses.

Checking your Bitcoin address at for private key leak is safe for you, because this information is available and it cannot perform any problems. And if your private key is secure, we can monitor and notify you about any leaks by email. Our database has more than 2 million rows of potential leaked addresses, collected according to the rules below:

  • Couple of thousands ordinal keys in the beginning and the end of Bitcoin range
  • Some keys are from the middle, quarters and fifth parts of Bitcoin range
  • Every 100 keys are from numerical ranks.
  • There are nice address combinations, like a 1AAAAAA..., 1BBBBBB..., 1CCCCCC... etc.
  • There are well-turned private key combinations in HEX and decimal (yes it is weird but it can be)
    For example: FFFFFFFFFFFF or 1234567890
  • We use a dictionary attack to Brainwallet to cover the majority of easy generated wallets.
    Brainwallet refers to the concept of storing Bitcoins in one's own mind by memorization of a passphrase. What we do is taking standard words and mix them to get the key and the address. (because usually people use ordinary and repeatable words to simplify keeping them in mind, for instance: "Home sweet home...")
  • Forums and documentation examples, etc... leaked to internet
  • White Hat hackers' keys
    Yes, we live in crypto currency age. And sometimes hackers find vulnerability on Exchanger’s, Trader’s, Wallet websites and crypto storages.
    White Hat hackers get access and pass it to website owner, as a bounty hunter. The website owner fixes vulnerability breach and pays fee to the hacker.

You can check your address in our database. And if your private key is in secure, we can monitor and notify you about any leaks by email.

Because the Bitcoin community is honest and reliable!