Private Key
The secret number that controls a blockchain account and signs its transactions; it must never be shared.
- glossary
A private key is the secret number — 256 bits on most blockchains — that controls an account: it produces the digital signatures that authorize every transaction from the address, and it must never leave your control. Lose it and you lose your assets permanently; expose it and anyone can drain your wallet. Most users never handle the raw key directly, protecting it instead through a seed phrase — a human-readable mnemonic that deterministically regenerates it. Its counterpart, the public key, is derived from it and is safe to share openly.
Related keywords
- private key
- signing key
- wallet key
- secret key
- blockchain account
Contributors
Namefi is a collective of engineers, designers, and operators who obsess over building tools that make managing your onchain domain names effortless.
Victor Zhou is a technology founder and standards editor focused on digital identity and trust. He founded Namefi, edits Ethereum Improvement Proposals, and previously led smart-contract architecture work at Google Labs.
His work sits at the intersection of naming, ownership, and the systems people use to establish identity online. That perspective makes him especially interested in the way names move between personal meaning, public recognition, and digital infrastructure.
For Namefi, Victor edits and writes about domains as durable digital identity: how names become ownable onchain assets, how tokenization changes custody and trust, and what naming can learn from the systems people use to establish identity online.