The Role of Centralized Crypto Exchanges in Sanitizing the Crypto Market: Lessons For Nigeria

Stephen Azubuike, Partner


Fraudsters, money launderers, financiers of terrorism and other criminals are some of the weeds capable of becoming pests within the cryptocurrency space, if they are not adequately curtailed and eradicated. This accounts for the reason some countries of the world such as China, Egypt, Colombia, Indonesia, etc. are yet to fully adopt crypto within their financial systems.

On 9 March 2022, the US President issued an Executive Order on Ensuring Responsible Development of Digital Assets. One of the policy objectives stated was that the US “must mitigate the illicit finance and national security risks posed by misuse of digital assets.  Digital assets may pose significant illicit finance risks, including money laundering, cybercrime and ransomware, narcotics and human trafficking, and terrorism and proliferation financing.”

In Nigeria, on 5 February 2021, the Central Bank of Nigeria (CBN) restricted banks and other financial institutions from any form of dealings in cryptocurrency, and directed them to close all accounts associated with crypto. According to the CBN Governor, Godwin Emefiele, “Cryptocurrency is used to describe the activities of traders in an electronic dark world where transactions are extremely opaque, not visible and not transparent. These are people who deal in transactions that do not want to be trailed.” 

Conceptually, the CBN Governor seemingly fails to realize that transparency is one of the hallmarks of the blockchain technology powering cryptocurrency. This is notwithstanding that cryptocurrencies run on cryptographic algorithms for security purposes. Aside from transparency, enhanced security, and immutability (of transaction records), other virtues of this innovation, amongst others, are decentralization, traceability, speed and efficiency. Invariably, the CBN Governor was clearly alluding to the activities of criminals who try to leverage on crypto in advancing illegal motives, but veered off track when he seemed to have relied on this position to define the whole body of players within the crypto industry.

Ironically, as at 2017, the CBN appeared to have acknowledged that indeed the activities of criminal elements within the crypto industry do not define the entire industry. This was as contained in the Circular of 12 January 2017 wherein the CBN also rightly acknowledged that “the emergence of virtual currencies has attracted investments in payments infrastructure that provides new methods for transmitting value over the Internet.” However, the apex Bank clearly warned that cryptocurrencies are largely untraceable and anonymous and that they are susceptible to abuse by criminals, especially in money laundering and financing of terrorism. In view of this, the CBN at the time directed banks and other financial institutions in Nigeria not to use, hold, trade, and/or transact in any way in virtual currencies. In showing leadership in the fight to curtail the activities of criminals using crypto, the CBN directed banks and other financial institutions to ensure that existing customers who are virtual currency exchangers have effective anti-money laundering/combating the financing of terrorism (AML/CFT) controls that enable them comply with customer identification, verification, and transaction-monitoring requirements; ensure that in the absence of required controls, they are to discontinue customer relationship immediately; and ensure that they immediately report any suspicious transactions by customers to the Nigeria Financial Intelligence Unit (NFIU). 

However, with the Circular of 5 February 2021, the CBN went on full restriction mode, which has had its toll, to some extent, on Nigeria’s crypto market (considered the largest in Africa). But its observations as contained in the 2017 Circular remains instructive. As we shall see in this piece, deploying AML/CFT controls including Know Your Customer (KYC) protocol are effective ways centralized crypto exchanges are leading the way in sanitizing the crypto market globally.

Centralized Crypto Exchanges

There are hundreds of crypto exchanges around the world. Taylor Tepper and John Schmidt of Forbes defined a crypto exchange as:

A marketplace where you can buy and sell cryptocurrencies, like Bitcoin, Ether or Dogecoin. Cryptocurrency exchanges work a lot like other trading platforms that you may be familiar with. They provide you with accounts where you can create different order types to buy, sell and speculate in the crypto market.

Broadly, we have centralized crypto exchanges (CEX) and decentralized crypto exchanges (DEX). As distinguished from centralized exchanges, decentralized exchanges demonstrate one of the core attributes (decentralization) of the blockchain technology powering cryptocurrency. Thus, decentralized exchanges do not involve third-party intermediaries as crypto traders can transact directly (dealing strictly on crypto as there is no room for trading fiat for crypto and vice versa) and the entire transaction is settled on the blockchain. With decentralization comes accountability, transparency and more security. Uniswap and Sushiswap — which run on the Ethereum blockchain are arguably the most prominent decentralized exchanges.

Given that anonymity is guaranteed at decentralized exchange marketplace, this underscores one of the reasons cryptocurrency trading is considered by persons like the CBN Governor, Mr. Emefiele, as an activity by traders in an electronic dark world. But the existence of centralized exchanges makes a major difference. Examples of centralized exchanges with presence in Nigeria are Luno, Binance, Bundle, NaijaCrypto, etc. Centralized exchanges have become useful intermediaries in crypto transactions, connecting crypto traders. At this centralized marketplace, trading fiat (like Naira) for crypto and vice versa is possible. In acting as an intermediary, a centralized exchange takes control of the crypto temporarily as the transaction goes on until concluded. Centralized exchanges are not there for any gratuitous service, rather, these exchanges are in business, earning trading, withdrawal fees and other charges from traders.

It is worthy of mention that to confidently continue to play in the Nigerian market, centralized exchanges need to pay close attention (and seek legal clarifications) to the new regulatory regime introduced by the Securities and Exchange Commission (SEC) which sought to capture what the SEC called Digital Assets Exchanges (DAX). Other entities captured are Digital Assets Offering Platforms (DAOPs), Digital Assets Custodians (DACs) and Virtual Assets Service Providers (VASPs).

How Centralized Exchanges are Sanitizing the Crypto Market and Lessons for Nigeria

According to the Chainalysis Crypto Crime Report 2022, about $8.6bn worth of cryptocurrency were laundered in 2021, which means a 30% increase from the 2020 report. See a preview of the report published on 6 January 2022 and also BBC‘s report.

As we observed in the introductory paragraphs, KYC, AML/CFT controls are some of the effective ways centralized exchanges are combating fraud and other criminal activities like money laundering, terrorism financing, scams, ransomware, etc. To set up adequate rules and protocols, centralized exchanges often rely on the services of data analytics experts (including legal experts) to ensure that where and when necessary, there is due compliance with the law and relevant rules and regulations in operation within a given jurisdiction as well as international standards and practices. 


Know your customer (KYC) requirement for users of the platforms owned by centralized crypto exchanges is similar to what you find in banks and other financial institutions. This involves obtaining a user’s personal information and identity verification documents such as a valid means of identification (driver’s license, international passport, voter’s card, etc.), utility bills (showing the user’s address), bank verification number (BVN), etc. Beyond user identity verification parameters, centralized exchanges may conduct further due diligence on a user (customer due diligence and ongoing due diligence with respect to transactions) to elicit more information regarding the user’s background which will also aid risk assessment. To effectively achieve this, centralized exchanges engage the services of some data-analytics firms such to enhance their KYC capabilities. 

Most times, only users who comply with and complete the KYC process may have full access to all the features in a centralized exchange.


Most centralized exchanges stand against money laundering activities and are on the frontline in combating terrorism financing. These exchanges set up processes and connect to a network that enable them to discourage the use of crypto trading as a means of advancing criminal objectives. KYC processes also form part of the AML/CFT regulatory arrangements put together to curb money laundering and terrorism financing. Terrorism thrives in today’s world because of huge financial backing from multiple sources. Financiers of terrorists activities and money launderers have found cryptocurrency as a faster means of injecting the funds needed to advance the course of terror and clean up proceeds of illicit activities.

Centralized exchanges adopt enhanced due diligence, consistent transaction monitoring, transaction record keeping, and transaction reporting (to relevant authorities) in deserving cases. Centralized exchanges do conduct additional AML/CFT measures with respect to politically exposed persons (persons in service of the public) and their family, close relatives and associates.

Furthermore, we mentioned above that centralized exchanges also connect to certain networks to strengthen their processes. These networks are blockchain analysis networks such as Chainalysis, Elliptic, CipherTrace, etc., which assist with enhancing compliance, investigation, and risk management.

Importantly, centralized exchanges also rely on some inter-governmental organizations that work for the prevention of money laundering and terrorism financing such as  Financial Action Task Force (FATF) by adopting set rules and established global standards. Luno, for example, is generally known to take AML/CFT compliance seriously, and is one of the few crypto exchanges in Nigeria that not only submit suspicious-transaction reports to the Nigerian Financial Intelligence Unit (NFIU) but also voluntarily complied with the National Workstream (on VASPs) when a National Risk Assessment was conducted in Nigeria in the first quarter of the year. Also, in April 2022, Binance announced the appointment of former FATF Executive Secretary, Rick McDonell, and former Head of the Canadian delegation to the FATF, Josée Nadeau, as new compliance and regulatory advisors to Binance. McDonell and Nadeau are expected to provide high-level guidance on Binance’s global compliance and regulatory strategies. Binance and other centralized exchanges are also known to assemble high-profile cyber forensics teams.

More so, in Nigeria, some centralized exchanges operating within the Nigerian market collaborate with self-regulatory organizations such as the Stakeholders in Blockchain Association of Nigeria (SiBAN). A number of local and foreign crypto exchanges, including AAX, Bitmama, Bundle, Kumo, LocalTrade, NaijaCrypto, WhaleFin, TradeFada, are corporate members of SiBAN. On 3 June 2022, SiBAN introduced a Code of Conduct for Virtual Assets Service Providers in Nigeria for its members and nonmembers who voluntarily adopt the Code. Binance, Luno, and Paxful are some of the leading crypto exchanges that have partnered with SiBAN in Nigeria’s virtual assets sector.

Nonetheless, one issue that cannot be overlooked is the allegation flying over the space that some crypto exchanges are conduit pipes for money laundering and other fraudulent activities. For instance, Binance recently revealed that the company has been at the tail end of such allegations. In an email exchange with Reuters which was made public by Binance on 6 June 2022, Reuters reached out to Binance alleging that “from an examination of blockchain data, court records and statements by law enforcement, Reuters has calculated that Binance processed transactions totaling at least $2.4 billion stemming from hacks, investment frauds and online illegal drug sales between 2017 and 2022.” For a balanced reportage, Reuters sought some answers which Binance provided, detailing its efforts and achievements in the battle against using its platform for fraudulent and criminal activities. For instance, Binance cited how in the past weeks, it assisted the US Drug Enforcement Administration (DEA) in identifying and seizing about 130 accounts linked to suspected drug money laundering in Mexico. Whether Reuters considered the answers satisfactory and convincing is a different ball game. 

On 6 January 2022, Forbes reported how Coinbase foiled an attempt to steal funds in a bank account belonging to an elderly man of North Carolina, using bitcoin as a conduit pipe. It was reported that Coinbase (the crypto exchange sought to be used by the fraudsters) was able to flag the transaction as potential “elder fraud”, froze the account and called in the authorities, thereby saving the man from losing over half a million of his life savings. We learnt from the report that there is a high rate of wire fraud targeting the elderly. 


While the CBN is still being awaited to complement the current regulatory posture of the SEC in Nigeria, centralized exchanges should be encouraged in their active objective to sanitize the market. In an interview published by The Cable on 15 February 2022, a centralized exchange, Luno, had expressed its willingness to work with the CBN on crypto regulation.

In making a strong case for centralized exchanges, Senator Ihenyen had explained that there is “the need for regulators to adopt a regulatory approach that requires VASPs to implement adequate KYC/AML/CFT procedures rather than drive them underground. Regulators must consciously avoid any regulatory action that drives persons or entities involved in cryptocurrencies away from self-regulated centralized exchanges (CEXs) and decentralized exchanges (DEXs) that have adequate KYC/AML/CFT procedures to peer-to-peer (P2P) cryptocurrency markets that are relatively difficult or near impossible to regulate. Such markets include smart contract-based P2P decentralized exchanges (SC P2P DEXs) with no intermediating entities and instant messaging-based platforms, including Telegram and WhatsApp… Therefore, as the gateway to the crypto and digital assets world, CEXs should be the regulators strongest ally or partner. Rather than deny CEXs access to banking and financial services in Nigeria, CEXs should be recognized as Virtual Assets Service Providers (VASP) and be required to comply with KYC/AML/CFT regulations in Nigeria” and, of course, global standards.

This is undeniably the only way to go. 

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