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Home / Blogs / Technical and Financial Advantages of Permissioned Blockchains in Banking

Technical and Financial Advantages of Permissioned Blockchains in Banking

November 09, 2020

Permissioned networks are the ideal solution for banks in building their own blockchain. In this article, we will detail the technical advantages of banking blockchains and how these advantages lead to financial advantages, as well.

Differences between Public and Private Blockchains

In what follows, we summarize the difference between public and private blockchains:

Public Blockchains Private Blockchains
Access level Anyone Members of an organization
Participation Permissionless

Anonymous

Permissioned

Not Anonymous: Identities are known

Security Consensus mechanism

Proof of work

Proof of stake

Consensus through pre-approved participants

Multi-party voting

Multi-signature

Notaries

Performance Slow Lighter blockchain

Faster

Technical Advantages of Permissioned Blockchains

 

Permissioned blockchains have many technical advantages:

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  • They are lighter than public blockchains. Thus, they act faster. The blockchain data is smaller, and there are fewer transactions than in a public blockchain.
  • They can identify their customers with certainty. Since each customer is provided with public and private keys, there are very few risks of identity theft.
  • They do not consume energy in irresponsible ways. Indeed, they do not use a mining-type proof-of-work. Instead, they usually employ a multi-party voting scheme.
  • The consensus is not ruled by financial interest. Instead, the consensus is based on notaries and cryptographic multi-signatures, and is conducted by the desire to provide a safer blockchain, not by ‘greed’.
  • Hard forks can be done very fast. Indeed, hard forks do not require community approval like public blockchains. Therefore, they can be performed by administrators with authoritative power over the private network.
  • Audits for compliance with banking regulations can be done easily as the systems are within a controlled network, with known actors, and ideally with centralized key management, as well as banking grade HSMs.

Finally, a permissioned blockchain retains most of the ‘positive’ aspects of the blockchains:

  • Decentralized system;
  • Decentralized data with better data protection;
  • The immutable, inalterable blockchain acting as a secure ledger;
  • Irrefragable proofs of transactions.

Financial Advantages of Permissioned Blockchains

New call-to-actionPermissioned blockchains have several financial advantages, with many of them coming from the technical advantages they provide. Generally, they reduce costs because they remove intermediaries, which becomes unnecessary in the blockchain protocol.

A Santander FinTech study showed that permissioned blockchain networks could reduce bank infrastructure costs between US$15 billion and $20 billion per year in 2022.

In a blockchain network, there is no need for complicated audits since the blockchain maintains its own permanent ‘audits’ and directly publishes transactions through the blockchain. This obviously reduces costs since bank external audits, which are of course mandatory, can be extremely expensive

Some slower, expensive payment networks with a quasi-monopolistic position can also be bypassed with the permissioned blockchains. This also reduces costs for banks.

Maintenance costs for the networks are also reduced since, for many aspects, the blockchain network can ‘self-maintain’ itself.

Summary

Permissioned blockchains have impressive technical and financial advantages in the context of the banking industry. They can reduce overall costs in a very efficient way.

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References and Further Reading

  • Learn more about Utimaco’s HSMs for blockchains
  • More articles on permissioned blockchains (2018 – today), by Martin Rupp, Priyank Kumar, Ulrich Scholten, Asim Mehmood, Dawn M. Turner and more
  • More articles on eIDAS (2018 – today), by Gaurav Sharma, David McNeal and more
  • More articles on HSMs (2018 – today) by Terry Anton, Dawn M. Turner and more
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