What is Centralized Exchanges (CEX)

A Centralized Exchange (CEX) is a cryptocurrency trading platform operated by a company that acts as an intermediary between buyers and sellers — managing user accounts, custody of funds, order matching, and regulatory compliance. CEXs are by far the most common way people buy and sell cryptocurrency globally, accounting for the majority of total crypto trading volume. HOW A CEX WORKS When you deposit funds on a CEX (via bank transfer, UPI, debit card, or crypto transfer), the exchange holds those funds in its own custody on your behalf. You trade against other users on the platform's order book — the exchange's matching engine pairs your buy order with someone else's sell order. You own a balance on the exchange's internal ledger, not tokens on the blockchain directly, until you withdraw to an external wallet. KEY FEATURES OF CEXs Order Book Trading: Buyers and sellers post limit orders at their desired prices. The exchange matches them when prices align. High Liquidity: Large CEXs have millions of users and enormous trading volumes — enabling tight bid-ask spreads and fast execution. Fiat Integration: CEXs provide fiat on-ramps — bank transfers, UPI (India), debit/credit cards — making them the entry point for new crypto users. User-Friendly Interface: Designed for all skill levels, from simple buy/sell interfaces to advanced charting tools. KYC/AML Compliance: Regulated CEXs require identity verification. MAJOR CEXs Global: Binance, Coinbase, Kraken, OKX, Bybit, KuCoin. India-specific: CoinDCX, WazirX, ZebPay, Mudrex, Giottus. CEX RISKS Counterparty Risk: You do not hold your own private keys — "not your keys, not your coins." Exchange insolvency or hacks (FTX in 2022, Mt. Gox in 2014, WazirX in 2024) can result in user fund losses. Regulatory Seizure: Exchanges operating outside regulatory frameworks can be shut down. Best Practice: Only keep on exchanges what you need for active trading. Store long-term holdings in self-custody wallets.

Terms in addition to the Centralized Exchanges (CEX)

Blockchain

A blockchain is a subset of a distributed database. The Bitcoin inventors originally prototyped the system in 2008. This modern database is made up of separate blocks that are connected together in a chronological chain. Blockchains may be used to store a wide range of data types. It has mostly been utilized as a public ledger for bitcoin transactions to date. A peer-to-peer network comprised of independent nodes uses a consensus process to ensure the blockchain's security and legitimacy. Each node in the network keeps a public and immutable copy of the data.

2 Factor Authentication (2FA)

2 Factor Authentication is a security measure with two layers. It is used by the majority of cryptocurrency exchanges. To log in, you must provide not only a password, but also a code obtained, for example, from the Google authenticator.

Airdrop

An airdrop is a method of distributing coins. End users can typically obtain coins for free or in exchange for doing a small task, such as subscribing to a newsletter, sending a tweet, or inviting others via a personal affiliate link. Cryptocurrency airdrops — the act of depositing cryptocurrency into public crypto wallets — are utilized as a marketing, liquidity creation, and network bootstrapping technique for many different types of blockchain initiatives.

Altcoin

Altcoin - "alternative coin" - is any kind of digital currency other than Bitcoin. Since the launch of Bitcoin, the world's first digital currency, many altcoins (as well as supporting blockchains) have been created. Altcoin digital currencies share many similarities to Bitcoin, but consistently and have significant differences. There are about 20,000 altcoins, and this number is expected to grow significantly in the coming years. Altcoins often develop Bitcoin features. Ethereum, currently the most widely used blockchain, supports digital contracts and separate applications where Bitcoin does not. Altcoins are also often created to cater to the needs of different users. The Litecoin blockchain, for example, can process payments quarterly for the duration of Bitcoin.

Cold Storage

Cold storage is the way to store cryptocurrency offline.  The word refers to the use of offline wallets that are not connected to the internet. Cold storage is the most secure way to keep cryptocurrencies since an offline currency becomes less likely to be hacked and stolen. Paper wallets, printed renditions of private keys, and offline hardware and software wallets are all examples of cold storage.