Hot wallet vs cold wallet?

A hot wallet is software connected to the internet - convenient for spending. A cold wallet is an offline device - safer for long-term holding. Many people use a hot wallet for payments and a cold wallet for savings.

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Crypto Wallets & Seed Phrases, Explained

Q: What is a seed phrase?

A list of 12 or 24 words that can restore your wallet and all its funds. Anyone with it controls the money. Never type it into a website, never photograph it, and never share it - store it offline. This is general information, not financial advice.

Q: Custodial vs self-custody?

Custodial means a company (e.g. an exchange) holds the keys for you. Self-custody means you hold the seed phrase and have full control and full responsibility.

Short answer: a wallet is an app or device that holds the keys to your crypto, not the crypto itself (that lives on the blockchain). The seed phrase - 12 or 24 words - is your money. Anyone who has it has the funds. Never share it, never type it into a website. General information, not financial advice.

“Wallet” is a slightly misleading word. Your coins never leave the blockchain; the wallet just stores the cryptographic keys that prove the coins are yours and let you spend them. Understand that and the rest is straightforward.

Hot vs cold

Hot wallet - software on your phone or browser, connected to the internet. Convenient for spending and paying for orders. Examples: mobile/extension wallets.

Cold wallet - a dedicated offline device that signs transactions without exposing keys to the internet. Best for holding larger amounts long-term.

A common setup: a hot wallet with a small spending balance for payments, a cold wallet for savings.

Custodial vs self-custody

Custodial - an exchange or app holds the keys for you. Easy, recoverable via support, but you’re trusting a third party.

Self-custody - you hold the seed phrase. Full control, full responsibility, no “forgot password.” This is the “not your keys, not your coins” idea.

The one rule: your seed phrase restores the entire wallet. No legitimate person, support agent, app, or website will ever ask for it. Write it on paper, store it offline in more than one place, and never photograph it or paste it into anything. If a site asks for your seed phrase, it is a scam - leave.

Setting up your first wallet

Install a reputable wallet from its official site or app store (check the URL carefully).

Create a new wallet; write the seed phrase on paper as it’s shown.

Confirm the phrase, set a device PIN/biometric lock.

Receive a tiny test amount first; verify the address and network before any larger transfer.

Then you’re ready to pay - see How to pay with crypto. Picking a coin/network? See Solana and stablecoins.

Frequently Asked Questions

What is a seed phrase? 12–24 words that restore your wallet and all funds. Whoever has it controls the money. Keep it offline; never share it.

Hot vs cold wallet? Hot = online software (spending). Cold = offline device (savings).

Custodial vs self-custody? Custodial = a company holds your keys. Self-custody = you hold the seed phrase and full responsibility.

Primary sources & further reading

Bitcoin - bitcoin.org: secure your wallet

Ethereum - ethereum.org: wallets

External links are for reference only; New-U is not affiliated with these projects and links carry no endorsement or financial advice.

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