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Cold Storage

Keeping crypto assets offline, disconnected from the internet, to protect them from hacking. The gold standard of self-custody security — and a key trust differentiator for custodians and exchanges.

Also called: Cold Wallet, Offline Storage

Common prompts: "what is cold storage crypto," "cold vs hot wallet," "is cold storage safe"

Definition

Cold storage is the practice of holding cryptocurrency private keys offline — on hardware wallets or air-gapped devices disconnected from the internet — to shield them from remote hacking. It contrasts with hot wallets, which remain online for convenience but carry greater exposure.

Why it matters

After a long history of exchange hacks and thefts, the share of assets held in cold storage has become a primary security credential for custodians and exchanges. Users and institutions evaluating where to hold assets research custody practices closely. A platform's cold-storage approach, clearly explained and surfaced in the answer layer, is a direct driver of trust and asset inflows.

Example

A custodian publishes structured detail on its cold-storage architecture and the share of assets held offline — surfacing as a trust signal when institutions research secure custody.

Related terms

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