The silent blockchain revolution

Blockchain extends beyond digital assets like Bitcoin and Ethereum, so popular at the moment for their euro exchange values. It is establishing itself as a network of transparency that facilitates instantaneous global-market transactions that are traceable and immutable at minimal fees.




It is a silent revolution that you’ve likely heard about in the past year, in part because of the interest in cryptocurrencies or cyptotokens (often speculative) on a market that moves $1.5 TRILLION.

The main idea behind blockchain is to facilitate transactions through decentralization and cross validation by using blockchain nodes to ensure that data can never be modified or falsified and that transactions are conducted between virtual wallets in a transparent way, while safeguarding the privacy of holders.


What do they contribute?

You may be wondering... apart from being able to speculate and profit from cryptocurrencies, what good are they to a company like Sacyr? There is no single answer: they can be adopted at many levels for various services.

For example, administration and accounting may adopt their own cryptocurrency backed by the company’s value and assets that can be used to move large sums of cash between the company’s many assets around the world, instantly and at a minimal financial cost (fees are very low), or on a contracting level to generate agreements with defined objective criteria that are automatically executed when the signed terms are met.

Another common thought associated with blockchain is the belief that if it arrives, it will be in the distant future, but nothing is further from the truth. Market value Since 2021, leading tech companies like Tesla, which has invested $1.5 billion in Bitcoin, are firmly committed to the future of this technology, paving the way for others and pushing the current price of Bitcoin up to roughly $50,000.

This corporate support means the ecosystem is not solely based on speculation, since these companies do not sell their assets in bitcoin; they accumulate and save them as haven assets with real use in the medium term. We have clear examples of the real use of this currency since it is accepted as a means of payment today by thousands of companies. In Spain specifically, Microsoft offers it as a form of payment, as does Xbox online, PlayStation Network, Destinia, Expedia, Rakuten, Greenpeace, Wikipedia, etc.

To learn more about the specific companies that accept cryptocurrency, visit:


Did you know...?

• Madrid has become one of Europe’s main cryptocurrency hubs with more than 40 cryptocurrency-related projects.

• There are currently more than 300 cryptocurrencies, each one focused on a specific area.

• There is one called IOTA, which is based on allowing the secure exchange of data within the Internet of Things (IoT)

Sacyr engages with blockchain on several levels, evaluating whether projects are suitable for the company’s various lines of business. It is a member of the Alastria consortium, which anticipates society’s needs by working in collaboration to promote the digital economy through blockchain.

"This technology will revolutionize both the digital and the financial world"

"Personally, I think we are facing a technology that, in the near future, will revolutionize both the digital and the financial world as we know it today, on par with the advent of the internet. What do you think? Will it come to nothing? Deflate like a balloon or not?"


David Redondo began as an intern at Sacyr’s Valoriza Servicios Medioambientales in June 2015, focusing on green zones under the current contract for Madrid’s green zones and street cleaning.


In 2020 he joined the central services’ R+D+i team at Valoriza Servicios Medioambientales, undertaking the ongoing improvement, optimization, and digitization of the services in our portfolio.

  • Blockchaim

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