Theme
MidnightCarbonAuroraObsidian
Home› Glossary

Crypto Glossary

A comprehensive reference of cryptocurrency, blockchain, and digital asset terms — explained clearly for investors at every level.

Jump to Letter
A 7 B 7 C 4 D 2 H 3 L 1 M 2 O 1 P 4 Q 1 S 4 T 1 W 1 X 1

Bitcoin is a digital currency enabling fast, secure, low-cost payments without a central issuer. Introduced in 2009, it operates on a decentralised blockchain network and has grown into the foundation of the broader cryptocurrency ecosystem. This glossary covers the key terms you'll encounter as an investor.

A
A Bitcoin address is similar to a physical address or email — the only information needed for someone to pay you in Bitcoin. Importantly, each address should be used for a single transaction only to maximise privacy and security.
B
A common sub-unit of bitcoin. 1,000,000 bits equals 1 bitcoin (BTC). This unit is more practical for everyday pricing of small goods and services.
Bitcoin (capitalised) refers to the network and protocol. bitcoin (lowercase) refers to the currency unit — also abbreviated BTC or XBT. Introduced in 2009 by Satoshi Nakamoto, it was the first decentralised digital currency.
A block is a record in the blockchain containing confirmed transactions. A new block is added to the chain approximately every 10 minutes through the mining process. If the blockchain is a ledger book, each block is one page.
A digital ledger distributed across all participants in a cryptocurrency network. It records every transaction transparently and is sealed using cryptography — making it tamper-resistant and publicly verifiable.
The reward paid to the miner who successfully processes and hashes a transaction block. It consists of newly created bitcoin plus transaction fees included in that block.
The standard currency code for Bitcoin — representing one full bitcoin, equivalent to 100,000,000 satoshis.
C
The storage of Bitcoin private keys on a device or medium that is completely offline and disconnected from the internet. Common forms include hardware wallets, USB drives, offline computers, and paper wallets. Cold storage is considered the most secure method for long-term holdings.
A confirmation means a transaction has been processed and included in a block on the blockchain, making it highly unlikely to be reversed. More confirmations provide greater security. Low-value transactions may be safe with one confirmation; large amounts warrant waiting for 6 or more.
The branch of mathematics enabling mathematical proofs that provide high-level security. In Bitcoin, cryptography makes it impossible to spend funds from another user's wallet or alter the blockchain. It also enables wallet encryption with passwords.
The generic term for a digital currency based entirely on mathematical principles — such as Bitcoin. Cryptocurrencies are typically decentralised, transparent, and secured by cryptographic protocols rather than central authorities.
D
A system without a central authority, controlling party, or single point of failure. Bitcoin is decentralised — no company, government, or individual controls it. Decisions and consensus are distributed across the entire network.
An attempted attack where a malicious user tries to spend the same bitcoins to two different recipients simultaneously. The blockchain and mining process exist specifically to create network consensus and prevent double spending from succeeding.
H
A cryptographic hash is a mathematical function that takes any file or data and produces a short, unique code identifying that data. It is unique (no two files produce the same hash) and irreversible (you cannot work out the source from the hash). Hashing underpins the security of bitcoin mining.
The process by which the number of new bitcoins created per block is cut in half every four years. Bitcoin has a finite supply of 21 million coins. Halvings progressively slow new supply creation, making bitcoin increasingly scarce over time. The final halving will occur around 2140.
A measurement of the total computational power being applied to the Bitcoin network. A higher hash rate means the network is more secure. For example, a hash rate of 10 Th/s means the network performs 10 trillion calculations per second.
L
A physical or electronic record of financial transactions and balances. The Bitcoin blockchain is the world's first distributed, decentralised, public ledger — openly auditable by anyone, anywhere.
M
The process by which computers perform intensive mathematical calculations to confirm Bitcoin transactions and maintain network security. Miners are rewarded with newly created bitcoin and transaction fees. Mining is competitive and resource-intensive — not a simple way to profit.
Also called multi-sig. A Bitcoin transaction type requiring cryptographic signatures from multiple parties before funds can be sent. Used to add an additional layer of authorisation and security to high-value transactions.
O
Software whose code is made publicly available, free to view, audit, and distribute. Bitcoin is an open-source project — its protocol is transparent and verifiable by anyone. It is arguably the first open-source form of money.
P
A printed sheet of paper containing one or more public Bitcoin addresses and their corresponding private keys. Paper wallets are a form of cold storage — entirely offline — making them resistant to hacking, though physical security becomes critical.
Peer-to-peer. A system where participants interact directly with each other without a central intermediary. In Bitcoin, each user broadcasts and relays transactions for others. No bank or central institution is required.
A secret piece of data that mathematically proves your right to spend bitcoin from a specific wallet. Private keys must never be shared or disclosed — anyone with access to your private key can spend the funds associated with it.
A string of digits and letters (your Bitcoin address) derived from your private key. When paired with a private key in a cryptographic signature, it enables secure, verifiable transactions on the network.
Q
A digital representation of a Bitcoin address or private key in a machine-readable format. QR codes can be scanned by smartphone cameras to quickly input wallet addresses — reducing the risk of manual entry errors.
S
A cryptographic signature is a mathematical mechanism proving ownership. When your Bitcoin wallet signs a transaction with the appropriate private key, the entire network can verify it is legitimate — without revealing the private key itself.
The smallest unit of Bitcoin — 1 bitcoin equals 100,000,000 satoshis. Named after Bitcoin's creator, Satoshi Nakamoto, satoshis make micropayments practical even as Bitcoin's price rises.
The pseudonymous person or group who created Bitcoin and authored its original whitepaper in 2008. The true identity of Satoshi Nakamoto remains unknown. They mined the first block (genesis block) in January 2009 and gradually withdrew from public involvement by 2010.
T
A fee included in a Bitcoin transaction, paid to the miner who confirms it. Fees incentivise miners to prioritise your transaction. A typical fee is small — often less than $1 — but varies with network congestion.
W
A Bitcoin wallet stores the private keys that prove ownership of your funds on the blockchain. It allows you to view your balance and send transactions. Wallets come in software (desktop, mobile, web), hardware, and paper forms — each with different security trade-offs.
X
An informal currency code for Bitcoin, used in some financial and trading contexts. Equivalent to BTC — 1 XBT = 1 Bitcoin = 100,000,000 satoshis.
No terms match your search. Try a different keyword or ask our team.
Ready to put your knowledge to work?

Open an account and access our professionally managed crypto and forex investment plans.