{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,20]],"date-time":"2026-08-20T15:13:38Z","timestamp":1787238818832,"version":"3.56.0"},"reference-count":42,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2017,6,27]],"date-time":"2017-06-27T00:00:00Z","timestamp":1498521600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Future Internet"],"abstract":"<jats:p>This paper looks at the challenges and opportunities of implementing blockchain technology across banking, providing food for thought about the potentialities of this disruptive technology. The blockchain technology can optimize the global financial infrastructure, achieving sustainable development, using more efficient systems than at present. In fact, many banks are currently focusing on blockchain technology to promote economic growth and accelerate the development of green technologies. In order to understand the potential of blockchain technology to support the financial system, we studied the actual performance of the Bitcoin system, also highlighting its major limitations, such as the significant energy consumption due to the high computing power required, and the high cost of hardware. We estimated the electrical power and the hash rate of the Bitcoin network, over time, and, in order to evaluate the efficiency of the Bitcoin system in its actual operation, we defined three quantities: \u201ceconomic efficiency\u201d, \u201coperational efficiency\u201d, and \u201cefficient service\u201d. The obtained results show that by overcoming the disadvantages of the Bitcoin system, and therefore of blockchain technology, we could be able to handle financial processes in a more efficient way than under the current system.<\/jats:p>","DOI":"10.3390\/fi9030025","type":"journal-article","created":{"date-parts":[[2017,6,28]],"date-time":"2017-06-28T10:25:56Z","timestamp":1498645556000},"page":"25","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":264,"title":["Banking on Blockchain: Costs Savings Thanks to the Blockchain Technology"],"prefix":"10.3390","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5055-9166","authenticated-orcid":false,"given":"Luisanna","family":"Cocco","sequence":"first","affiliation":[{"name":"Department of Electric and Electronic Engineering, University of Cagliari, Cagliari 09123, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7530-0521","authenticated-orcid":false,"given":"Andrea","family":"Pinna","sequence":"additional","affiliation":[{"name":"Department of Electric and Electronic Engineering, University of Cagliari, Cagliari 09123, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michele","family":"Marchesi","sequence":"additional","affiliation":[{"name":"Department of Mathematics and Computer Science, University of Cagliari, Cagliari 09124, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2017,6,27]]},"reference":[{"key":"ref_1","first-page":"294","article-title":"The GREENSOFT Model: A reference model for green and sustainable software and its engineering","volume":"1","author":"Naumann","year":"2011","journal-title":"Sustain. Comput. Inf. Syst."},{"key":"ref_2","unstructured":"McLean, J. (2016). Banking on Blockchain: Charting the Progress of Distributed Ledger Technology in Financial Services, Finextra Research Ltd. Technical Report."},{"key":"ref_3","unstructured":"Bradley, J. (2017, January 09). The Energy Efficiency of Bitcoinm. Available online: https:\/\/www.cryptocoinsnews.com\/energy-efficiency-bitcoin\/."},{"key":"ref_4","unstructured":"Malmo, C. (2017, January 12). Bitcoin is Unsustainable. Available online: http:\/\/motherboard.vice.com\/read\/bitcoin-is-unsustainable."},{"key":"ref_5","unstructured":"Deetman, S. (2017, February 12). Bitcoin Could Consume as Much Electricity as Denmark by 2020. Available online: http:\/\/motherboard.vice.com\/read\/bitcoin-could-consume-as-much-electricity-as-denmark-by-2020."},{"key":"ref_6","unstructured":"Lees, A., and King, M. (2017). World Payments, Capgemini and The Royal Bank of Scotland. Technical Report."},{"key":"ref_7","unstructured":"Accenture (2017). Banking on Blockchain, A Value Analysis for Investment Banks, Accenture Consulting. Technical Report."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.cosust.2017.04.011","article-title":"Sustainability of bitcoin and blockchains","volume":"28","author":"Vranken","year":"2017","journal-title":"Curr. Opin. Environ. Sustain."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"80","DOI":"10.1016\/j.econlet.2016.09.019","article-title":"The inefficiency of Bitcoin","volume":"148","author":"Urquhart","year":"2016","journal-title":"Econ. Lett."},{"key":"ref_10","unstructured":"Hayes, A. (2017, January 23). A Cost of Production Model for Bitcoin. Available online: https:\/\/ssrn.com\/abstract=2580904."},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"O\u2019Dwyer, K.J., and Malone, D. (2014, January 26\u201327). Bitcoin mining and its energy footprint. Proceedings of the 25th IET Irish Signals Systems Conference 2014 and 2014 China-Ireland International Conference on Information and Communications Technologies (ISSC 2014\/CIICT 2014), Limerick, Ireland.","DOI":"10.1049\/cp.2014.0699"},{"key":"ref_12","unstructured":"International Institute for Sustainable Development (2017, January 09). Sustainable Banking. Available online: http:\/\/www.iisd.org\/business\/banking\/sus_banking.aspx."},{"key":"ref_13","unstructured":"Linux Foundation (2017, January 12). Linux Foundation\u2019s Hyperledger Project Announces 30 Founding Members and Code Proposals to Advance Blockchain Technology. Available online: https:\/\/www.linuxfoundation.org\/news-media\/announcements\/2016\/02\/linux-foundation-s-hyperledger-project-announces-30-founding."},{"key":"ref_14","unstructured":"Rizzo, P. (2017, February 03). Hong Kong\u2019s Central Bank to Test Blockchain. Available online: http:\/\/www.coindesk.com\/hong-kongs-central-bank-test-blockchain\/."},{"key":"ref_15","unstructured":"Yu, H. (2017, February 03). What Wall Street\u2019s Obsession With Blockchain Means for the Future of Banking. Available online: http:\/\/fortune.com\/2016\/07\/10\/wall-street-blockchain-technology-banking\/."},{"key":"ref_16","unstructured":"Rizzo, P. (2017, January 12). French Bank BNP is Testing Blockchain for Mini-Bonds. Available online: http:\/\/www.coindesk.com\/french-bank-bnp-testing-blockchain-mini-bonds\/."},{"key":"ref_17","unstructured":"Roth, M. (2015). Sustainability Report, DZ Bank. Technical Report."},{"key":"ref_18","unstructured":"McCook, H. (2017, January 24). Under the Microscope: The True Costs of Banking. Available online: http:\/\/www.coindesk.com\/microscope-true-costs-banking\/."},{"key":"ref_19","unstructured":"Nakamoto, S. (2017, June 24). Bitcoin: A Peer-to-Peer Electronic Cash System. Available online: www.bitcoin.org."},{"key":"ref_20","unstructured":"Ethereum Community (2017, January 17). History of Ethereum. Available online: http:\/\/ethdocs.org\/en\/latest\/introduction\/history-of-ethereum.html."},{"key":"ref_21","unstructured":"BitFury, G. (2017, February 10). Proof of Stake Versus Proof of Work. Available online: http:\/\/bitfury.com\/content\/5-white-papers-research\/pos-vs-pow-1.0.2.pdf."},{"key":"ref_22","unstructured":"Ametrano, F.M. (2016, August 13). Hayek Money: The Cryptocurrency Price Stability Solution. Available online: https:\/\/ssrn.com\/abstract=2425270."},{"key":"ref_23","unstructured":"Buterin, V. (2017, January 16). On Stake. Available online: https:\/\/blog.ethereum.org\/2014\/07\/05\/stake\/."},{"key":"ref_24","unstructured":"Bitcoinwiki (2017, January 15). Scalability. Available online: https:\/\/en.bitcoin.it\/wiki\/Scalability."},{"key":"ref_25","doi-asserted-by":"crossref","unstructured":"Cocco, L., and Marchesi, M. (2016). Modeling and Simulation of the Economics of Mining in the Bitcoin Market. PLoS ONE, 11.","DOI":"10.1371\/journal.pone.0164603"},{"key":"ref_26","unstructured":"Buterin, V. (2017, January 16). Slasher: A Punitive Proof-of-Stake Algorithm. Available online: https:\/\/blog.ethereum.org\/2014\/01\/15\/slasher-a-punitive-proof-of-stake-algorithm\/."},{"key":"ref_27","unstructured":"King, S., and Nadal, S. (2017, April 05). PPCoin: Peer-to-Peer Crypto-Currency with Proof-of-Stake. Available online: https:\/\/peercoin.net\/assets\/paper\/peercoin-paper.pdf."},{"key":"ref_28","unstructured":"Nxt (2017, June 24). Whitepaper: Nxt. Available online: https:\/\/nxtwiki.org\/wiki\/Whitepaper:Nxt."},{"key":"ref_29","unstructured":"Czarnek, M. (2017, January 20). Nxt Network Energy and Cost Efficiency Analysis. Available online: https:\/\/www.scribd.com\/document\/254930279\/Nxt-Network-Energy-and-Cost-Efficiency-Analysis."},{"key":"ref_30","doi-asserted-by":"crossref","unstructured":"Bentov, I., Lee, C., Mizrahi, A., and Rosenfeld, M. (2014). Proof of Activity: Extending Bitcoin\u2019s Proof of Work via Proof of Stake. Cryptology ePrint Archive, Succinct Computational Integrity and Privacy Research. Report 2014\/452.","DOI":"10.1145\/2695533.2695545"},{"key":"ref_31","doi-asserted-by":"crossref","unstructured":"Clark, J., Meiklejohn, S., Ryan, Y.P., Wallach, D., Brenner, M., and Rohloff, K. (2016). Cryptocurrencies Without Proof of Work. Financial Cryptography and Data Security: FC 2016 International Workshops, BITCOIN, VOTING, and WAHC, Christ Church, Barbados, February 26, 2016, Revised Selected Papers, Springer.","DOI":"10.1007\/978-3-662-53357-4"},{"key":"ref_32","first-page":"528","article-title":"Spacemint: A Cryptocurrency Based on Proofs of Space","volume":"Volume 2015","author":"Park","year":"2015","journal-title":"IACR Cryptology ePrint Archive"},{"key":"ref_33","unstructured":"Wirdum, A.V. (2017, January 23). The Segregated Witness Timeline: From Idea to Adoption in Six Steps. Available online: https:\/\/bitcoinmagazine.com\/articles\/the-segregated-witness-timeline-from-idea-to-adoption-in-six-steps-1461255570."},{"key":"ref_34","unstructured":"Redman, J. (2017, January 23). The Segregated Witness Concept: A \u2018Turning Point\u2019 for Bitcoin?. Available online: https:\/\/news.bitcoin.com\/segregated-witness-concept-turning-point-bitcoin\/."},{"key":"ref_35","unstructured":"Wirdum, A.V. (2017, January 23). Segregated Witness Officially Introduced with Release of Bitcoin Core 0.13.1. Available online: https:\/\/bitcoinmagazine.com\/articles\/segregated-witness-officially-introduced-with-release-of-bitcoin-core-1477611260."},{"key":"ref_36","unstructured":"Poon, J., and Dryja, T. (2017, January 24). The Bitcoin Lightning Network: Scalable Off-Chain Instant Payments. Available online: https:\/\/lightning.network\/lightning-network-paper.pdf."},{"key":"ref_37","unstructured":"Courtois, N., Grajek, M., and Naik, R. (2017, January 25). The Unreasonable Fundamental Incertitudes Behind Bitcoin Mining. Available online: http:\/\/arxiv.org\/pdf\/1310.7935v3.pdf."},{"key":"ref_38","unstructured":"Mark, G. (2017, January 18). Virtual Bitcoin Mining Is a Real-World Environmental Disaster. Available online: www.Bloomberg.com."},{"key":"ref_39","unstructured":"Carterand, J. (2017, January 09). Does Bitcoin Have an Energy Problem?. Available online: http:\/\/blog.acton.org\/archives\/82688-does-bitcoin-have-an-energy-problem.html."},{"key":"ref_40","unstructured":"Quiggin, J. (2017, January 30). Bitcoins Are a Waste of Energy-Literally. Available online: http:\/\/www.abc.net.au\/news\/2015-10-06\/quiggin-bitcoins-are-a-waste-of-energy\/6827940."},{"key":"ref_41","unstructured":"Gautham (2017, January 30). The Dominance of Bitcoin Network by Mining Pools. Available online: http:\/\/www.newsbtc.com\/2016\/06\/30\/dominance-bitcoin-network-mining-pools\/."},{"key":"ref_42","unstructured":"Autorita per l\u2019energia elettrica, il gas ed il sistema idrico (2017, January 12). Prezzi medi finali ai clienti non domestici nel 2015 per livello di tensione (Italian). (In Italian)."}],"container-title":["Future Internet"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1999-5903\/9\/3\/25\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T18:40:32Z","timestamp":1760208032000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1999-5903\/9\/3\/25"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,6,27]]},"references-count":42,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2017,9]]}},"alternative-id":["fi9030025"],"URL":"https:\/\/doi.org\/10.3390\/fi9030025","relation":{},"ISSN":["1999-5903"],"issn-type":[{"value":"1999-5903","type":"electronic"}],"subject":[],"published":{"date-parts":[[2017,6,27]]}}}