noun
cold wallet (cryptocurrency)
A cryptocurrency wallet that is kept offline for security, as opposed to a hot wallet.
長期保有する仮想通貨はコールドウォレットに保管しています。
I store cryptocurrencies I hold long-term in a cold wallet.
Variant with interpunct; less common but seen in some contexts.
A hot wallet is connected to the internet and used for frequent transactions, while a cold wallet is offline and more secure.
Borrowed from English 'cold wallet', referring to offline cryptocurrency storage.