Private Key / Public Key

A private key / public key pair is the cryptographic foundation of every blockchain account. The public key (or its derived address) is safe to share openly — it is where others send tokens or call smart contracts on your behalf. The private key is a 256-bit secret that must never leave your control; it produces the digital signatures that authorize every transaction from your address. Lose it and you lose your assets permanently; expose it and anyone can drain your wallet. Most users protect the private key indirectly through a seed phrase — a human-readable mnemonic that deterministically regenerates the key. Hardware wallets store the private key in a dedicated secure chip, keeping it offline and reducing cryptographic security risks from malware. For tokenized domain ownership, the private key is effectively the deed: whoever signs with it controls the NFT — and therefore the DNS configuration — of every domain in that wallet. Namefi's architecture means ownership is enforced by math, not by a registrar's password-reset flow. Source: Ethereum Developer Documentation — Accounts.