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Blockchain technology is revolutionising payments

Thursday, August 10, 2023 4 minute read
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4 minute read

From science fiction to financial services, blockchain technology is gaining popularity. Especially in financial services. Payments accounted for 44% of global blockchain revenue in 2022. And by 2030, blockchain revenue is expected to reach $1.4 trillion worldwide.

“I believe blockchain is bringing in one of the fundamental technological changes of our generation. We're at the very start of something that's maybe a 10- to 20-year trend.”

Alisa Ellis
Discover® Global Network, Global Head of innovation and Emerging Products

What is blockchain? And how does it work?

Before diving into the benefits of blockchain, here's a brief introduction. And a few key terms related to the blockchain conversation.

  • Blockchain is a “distributed database or ledger that is shared among the nodes of a computer network.”
  • A 'node' refers to a device—like a computer—connected to a network.
  • Transactions are approved by 'validator nodes' (also called 'miners') that reach an agreement using a dedicated algorithm or set of rules.
  • A "block" contains approved transactions.
  • When strung together, a series of blocks—called a blockchain—hold the history of these transactions.
  • The content of a block is cryptographically protected (locked by a code) and visible only to users with the appropriate 'key.'

Public vs private blockchain

In a public blockchain (also called open or permissionless), all of the blocks in the chain are public and viewable to anyone in the network (but not the content inside the blocks). That way, personal information contained in a block cannot be accessed, ensuring privacy. In a private blockchain, only approved users can access the blocks themselves. Permissioned blockchains require permission to do so.

The information within a block cannot be changed; it's recorded and becomes permanent as soon as it enters the ledger. That's what an “immutable ledger” is. If there's an error in the blockchain, another block must be added to reverse the error.

You'll also hear the term 'decentralised' when discussing blockchain. In a decentralised blockchain network, each participant can join the network. And each validator node (or miner) verifies the data or transaction. This process is handled through a consensus mechanism that verifies the transaction is valid. No central authority, like a government or bank, is needed to approve the transaction.

What are the advantages of using blockchain in payments?

There are several advantages to blockchain in payments, including speed, transparency, privacy and security.

  • Speed. Blockchain doesn't require a central authority–or gateway, acquiring bank, card association and issuing bank–to approve and authenticate a payment. Once the validator nodes reach consensus, the information is added to a block in real time.
  • Transparency. Anyone with the proper credentials can view transactions anytime because they're recorded on an immutable distributed ledger. The entire history of the transaction is unchangeable and traceable.
  • Privacy and security. Blockchains use public and private keys, which encrypt the data. With no personal information visible, blockchain systems keep data from becoming vulnerable to hackers.

With benefits like these, it's no wonder blockchain technology is revolutionising payments. One example is cross-border payments.

Blockchain in action: cross-border payments

Cross-border (or international) payments rely on more complex authentication processes because you transact with banks from different countries. And different countries have different centralised authorities operating in accordance with their own regulations. The method of authenticating a cross-border payment can take days.

Blockchain simplifies this payment process. Using a decentralised network removes the need for multiple intermediaries to authenticate and process transactions. A payment is authenticated in real time against data contained in a blockchain. This new transaction is added to a block that is then added to the chain for traceability. What took days to process now takes minutes.

These benefits make transactions faster, more transparent and more secure for both peer-to-peer (P2P) and business-to-business (B2B) cross-border payments.

Blockchain and P2P cross-border payments

P2P payments are transactions between two individuals. Blockchain can rapidly and affordably facilitate P2P transactions across borders because of its global reach and decentralised nature. Payments and remittances get to their intended recipient without intermediaries (like Western Union or MoneyGram).

Blockchain and B2B cross-border payments

In the same way that blockchain makes P2P payments faster and more efficient across borders, it also solves these same challenges with cross-border B2B payments. Many businesses already realise these benefits. A PYMNTS survey reports that 37% of businesses already use blockchain for B2B cross-border transactions.

Blockchain makes cross-border B2B payments faster. A PYMNTS survey reports that 37 percent of businesses use blockchain for cross-border transactions.Click to tweet

Blockchain technology is a trend to watch

Leveraging the power of blockchain payments, financial institutions are introducing new services that will change how we view commerce. This makes blockchain technology a trend to watch in 2023 and beyond.

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