Cryptocurrency and the Exchange of Digital Money
According to the Internal Revenue Service, virtual currency, or cryptocurrency, is “a
digital representation of value that functions as a medium of exchange, a unit of account, and/or
a store of value.”
1
Rather than using traditional intermediaries to facilitate currency transfers or
transactions, owners rely on a cryptographic procedure for exchange and production of the
digital money. This procedure, called blockchain technology, uses a decentralized public ledger
to record the movement and ownership of cryptocurrency units. Owners of cryptocurrency will
often have personal passcodes to use, exchange, and store their currency tokens. Generally,
passcodes are known only to the holder of the cryptocurrency account, but the ledger of
transactions is visible to the entire network of account holders of a particular cryptocurrency.
Blockchain Technology
Most cryptocurrencies are exchanged and produced using blockchain technology.
2
On a
blockchain, a network of computer users certifies the legitimacy of each cryptocurrency
transaction through a public ledger. The ledger shows the location of, and any transactions
involving, each unit of cryptocurrency. Transactions could involve securities and commodities
other than cryptocurrencies, such as non-fungible tokens (NFTs), which are unique assets
recorded and exchanged on blockchains and usually indicate ownership of a digital product,
such as a video or image. Unique digital signatures identify each party in the transaction.
Proponents of cryptocurrency point to the ledger’s transparency and decentralization as the
primary advantages of cryptocurrency.
3
Since all transactions are public to the blockchain network and each unit of currency
requires private credentials to access, the cryptographic protocols serve the same function as a
bank in facilitating the electronic transfer of funds among parties. Thus, according to supporters,
cryptocurrencies are more efficient and less prone to manipulation than conventional banking
practices and institutions. However, the anonymity of blockchain transactions has popularized
the technology among criminals. In 2020, victims of ransomware attacks paid hackers an
amount of cryptocurrency equivalent to $350 million.
4
Recently, the cybercriminal group
DarkSide received 75 bitcoin (equivalent to about $5.0 million at the time) as ransom after its
hack of Colonial Pipeline Co. in May 2021. Shortly after the ransom payment, U.S. federal law
enforcement officials traced and recovered nearly 90 percent of the bitcoin used in the ransom
exchange with DarkSide, raising hopes that the transparency of blockchain transactions could
aid governments in their attempt to recoup future ransom payments and deter criminal use of
cryptocurrencies. However, since the successful recovery of the bitcoin ransom, hackers have
1 State statute and federal regulation use various terms to refer to cryptocurrency, including “virtual
currency” and “digital tokens.” In this memorandum, “cryptocurrency” is used to differentiate between
currency that relies on cryptographic procedures and proprietary tokens, such as digital casino credits,
that private businesses may accept but whose value is normally not reducible to fiat currency, which is
a government-issued currency not backed by a commodity.
2 Blockchain technology is not used just for cryptocurrency accounting. Digital, decentralized ledgers
are relatively new technologies, but various industries, from agriculture to health care, are testing the
potential utility of the ledgers. See appendix for information on state action authorizing the use of
blockchain technology. For more on the uses of blockchain, see The World Bank, “Blockchain and
Distributed Ledger Technology (DLT),” April 12, 2018. For an illustration of a blockchain ledger, see
Figure A.
3 Users might still be identified by pseudonyms only.
4 The actual amount is probably much higher, considering many cyberattacks go unreported.
Kansas Legislative Research Department 2 Cryptocurrency and Blockchain
Technology – May 26, 2022