![]() ![]() More specifically, it uses one particular curve called secp256k1. Why exactly 32 bytes? Great question! You see, to create a public key from a private one, Bitcoin uses the ECDSA, or Elliptic Curve Digital Signature Algorithm. The same private key, written in different formats. For our purposes, we will use a 64 character long hex string. It can be a binary string, Base64 string, a WIF key, mnemonic phrase, or finally, a hex string. ![]() It can be a string of 256 ones and zeros (32 * 8 = 256) or 100 dice rolls. Now, there are many ways to record these bytes.
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