Address
The code you share so someone can send you bitcoin — like an account number, safe to give out.
Go deeper →Bitcoin words, translated.
Every technical word on this site, explained in one plain sentence. Wherever you spot a dotted underline, tap it for the same answer without leaving the page.
A
B
Bitcoin
Digital money that works without banks — it runs on a public network no company controls, 24/7, worldwide.
Go deeper →Blockchain
The public ledger every Bitcoin transaction is recorded on — thousands of computers keep identical copies, which is why nobody can cheat it.
Go deeper →C
Custodial
A service that holds your bitcoin and its keys for you — convenient, but you have to trust them and ask permission to use your own money.
Go deeper →D
Decoy wallet
A second wallet with a small balance you can show under pressure, keeping your real savings hidden.
Go deeper →E
Exchange
A business where you swap regular money for bitcoin — most hold your coins for you until you withdraw them to your own wallet.
Go deeper →H
Hardware wallet
A small offline device that keeps your keys away from the internet — the safest home for savings you don’t touch often.
Go deeper →Hot wallet
A wallet on a device that’s connected to the internet, like your phone — convenient for everyday amounts.
Go deeper →K
Keys (private key)
The secret that proves your bitcoin is yours and lets you spend it — whoever holds the keys controls the money.
Go deeper →KYC
“Know Your Customer” — the identity paperwork (ID, selfie, proof of address) most exchanges require before letting you buy.
Go deeper →L
Lightning Network
A faster layer built on top of Bitcoin for small, instant, nearly-free payments.
Go deeper →N
Network fee
A small amount paid to the Bitcoin network (not to us) to process your transaction — it varies with how busy the network is.
Go deeper →O
Open source
Software whose full code is published for anyone to read, check, and copy — no blind trust required.
S
Sats (satoshis)
The smallest unit of bitcoin — 100 million sats make one bitcoin, so you can start with a tiny amount.
Go deeper →Seed phrase
The 12–24 words that back up your wallet — anyone who has them controls your bitcoin, so you never share them.
Go deeper →Self-custody
Holding your bitcoin with your own keys instead of trusting a company to hold it for you — cash in your pocket, not money in someone else’s vault.
Go deeper →W
Wallet
An app or device that holds the keys to your bitcoin and lets you send and receive it — the bitcoin itself lives on the network.
Go deeper →Watch-only
A wallet you can look at but not spend from — it knows your addresses, while the keys stay somewhere safer.
Go deeper →