Private key and public key: 256 bits decide who owns your coins

The information provided in this article is for informational purposes only and does not constitute financial advice. Cryptocurrency investments carry a high degree of risk. Always conduct your own research.A private key is a secret number with 78 digits, and the public key can be calculated from it, while the way back cannot. Signature, seed and address all hang on it, and at an exchange or in your own wallet this single value decides who owns the coins.A private key is a secret number. Anyone who knows it can spend the coins held at an address. Anyone who does not cannot, no matter how much computing power they bring. The public key is its open counterpart: it is calculated from the private key, may appear anywhere and still gives the secret away. This one-way street is the whole trick behind Bitcoin and every other blockchain that works without a bank. Ownership in this system does not mean that a name sits in a register. Ownership means that someone can produce a valid signature. That is exactly why a lost key is lost for good and a copied key is dangerous at once. A private key is a number with 78 digits Technically, a Bitcoin private key is a random number between 1 and just ...