Blockchain technology first emerged alongside Bitcoin. In recent years, so-called "digital currencies" or virtual currencies became a speculative "hot topic" for many investors. As regulatory policies in China and elsewhere have matured, speculative enthusiasm has gradually cooled. Now, the underlying technology—blockchain—is being widely recognized for its true potential.
As the hype around digital currencies fades, blockchain is returning to its original purpose: serving as a foundational technology that offers new opportunities across various industries.
The Origins and Evolution of Blockchain
Blockchain was born out of the concept of Bitcoin, introduced by an entity known as Satoshi Nakamoto.
In November 2008, Nakamoto published the paper Bitcoin: A Peer-to-Peer Electronic Cash System, which described the framework for an electronic cash system based on P2P networks, encryption, timestamps, and blockchain technology. This marked the birth of Bitcoin.
According to Li Ming, Director of the Blockchain Research Laboratory at the China Electronics Standardization Institute, the development of blockchain can be divided into three stages, and it is still in its early phases overall. The first stage involved the Bitcoin network establishing a payment system that enabled peer-to-peer electronic payments. The second stage saw Ethereum integrate smart contracts and other technologies to create a distributed application system and a broader blockchain-based ecosystem. The third stage is the current transition from small-scale applications to partial large-scale adoption.
"Blockchain technology is the infrastructure behind the Bitcoin network," explains Li Feng, Head of Blockchain at Baidu Financial. "It consists of cryptography, distributed communication, distributed computing, and other components that existed even before blockchain emerged. So, it’s not entirely new technology."
From a technical perspective, blockchain is a decentralized database that combines distributed data storage, consensus mechanisms, encryption algorithms, and other technologies. It offers advantages such as decentralization, immutability of data, transparency, synchronous updates, and highly reliable database security.
Key technical features of blockchain include:
- Distributed Shared Ledger: Unlike traditional centralized record-keeping, blockchain uses a distributed ledger shared across the entire network. Participants synchronize and coordinate to ensure data consistency, improving the efficiency of payment clearance and settlement.
- Decentralized Trust Mechanism: The network operates without a central authority. All nodes are equal and achieve consensus through mechanisms that enable collective agreement.
- Data Security and Immutability: Data in each block is encrypted using asymmetric cryptographic algorithms and synchronized across all nodes. This ensures that the system remains operational even if individual nodes fail.
- Smart Contract-Driven Applications: Business applications can be automated using smart contracts—self-executing code that requires no manual intervention.
Digital Currency vs. Blockchain
While blockchain and digital currency are often mentioned together, they are not the same. Various digital currencies represent only one part of the broader blockchain economic ecosystem.
"Blockchain technology is related to digital currency, but the two are fundamentally different," emphasizes Li Feng. Although blockchain technology originated with Bitcoin, people soon realized that the underlying computer technology could be applied beyond digital currencies to other fields. Thus, the term "blockchain technology" was adopted to describe these foundational innovations.
Li Feng further clarifies that blockchain is a neutral computer technology. It can be applied to digital currencies, but also to many other domains. Digital currencies, on the other hand, are virtual applications—essentially strings of binary code that exist in virtual networks and computer systems.
"Digital currencies can be built using blockchain technology, but they don’t have to be," he notes. Long before blockchain, various digital currencies already existed in academic research. However, many of the so-called "digital currencies" discussed today are purely speculative instruments used in marketing schemes, with no real connection to blockchain technology.
In August 2017, the National Internet Finance Association of China issued a Risk Warning on Preventing Investment Absorption under the Guise of ICOs (Initial Coin Offerings). The warning alerted investors that some organizations, both domestic and international, were using misleading promotional tactics to conduct fundraising activities under the name of ICOs, without obtaining the necessary legal approvals.
In September of the same year, seven Chinese regulatory authorities, including the People’s Bank of China and the Ministry of Industry and Information Technology, jointly announced a ban on all forms of token-based fundraising.
Throughout 2018, additional risk warnings were issued regarding disguised ICO activities and the risks associated with offshore virtual currency trading. Regulatory authorities also published data on the closure of virtual currency trading and ICO platforms, incorporating them into broader internet finance rectification efforts.
"Some blockchain companies have attempted to raise funds without explicitly using the term 'digital currency,' opting instead for terms like 'tokens' or 'points,'" says He Ping, Professor of Finance at Tsinghua University and Director of the China Financial Research Center. "However, these still pose financial risks to society."
The Real Value of Blockchain
In 2015, The Economist described blockchain as a critical technology for solving trust issues. The World Economic Forum has also highlighted blockchain as part of the fourth industrial revolution, following steam engines, computers, and the internet. As a trust infrastructure for the digital economy, blockchain plays a vital role in economic restructuring, fostering innovation, and driving high-quality development.
Liu Xiaolei, Director of the Finance Department at Peking University's Guanghua School of Management, points out that blockchain has broad application scenarios in foreign trade, supply chain management, and beyond. "The implementation of blockchain in supply chain finance can integrate data across vertical industries," she explains. "If data can be seamlessly shared along the supply chain in various sectors, it can not only improve operational efficiency but also help small suppliers with limited credit histories overcome financing challenges, thereby upgrading entire industries."
Li Ming emphasizes that data is a core element of the digital economy, and innovation in data services is essential for economic growth. This process requires the integrated application of blockchain, big data, artificial intelligence, and the Internet of Things (IoT) to support data service innovation, maximize data utilization, and accelerate digital economic development.
Since its inception, blockchain technology has been primarily applied in the financial sector, but its compliance has not yet been globally recognized. Moreover, many applications in other fields remain experimental. Therefore, it is crucial to promote pilot applications in specific areas to drive the rapid development of blockchain technology.
At the same time, as the digital economy grows rapidly, public services and other sectors face urgent needs for transformation and upgrading. Blockchain can serve as an information infrastructure to accelerate the digital transformation of traditional industries.
"The distributed consensus feature of blockchain can serve as infrastructure for social governance and integrity systems," Li Ming adds. "It enables data sharing and collaboration among stakeholders, provides a trust foundation for integrity systems, reduces coordination costs, improves efficiency, and accelerates value exchange."
By building industrial sharing and service platforms based on blockchain technology, businesses can innovate service models, enhance economic benefits, upgrade industrial structures, and reshape entire industry chains.
"Technology must meet the needs of industrial development; it shouldn’t be just a toy for tech enthusiasts," Li Ming concludes. Now that the hype around digital currencies has subsided, the real potential of blockchain is beginning to shine. With the extravagance faded, the true value of blockchain technology is finally becoming clear.
Frequently Asked Questions
What is the main difference between blockchain and Bitcoin?
Blockchain is the underlying technology that enables Bitcoin to function. While Bitcoin is a specific application of blockchain (a digital currency), blockchain itself is a broader technological framework that can be applied in numerous other sectors beyond finance.
Can blockchain be used without cryptocurrencies?
Yes, absolutely. Blockchain technology can be implemented in various fields such as supply chain management, healthcare, public administration, and legal contracts without any involvement of cryptocurrencies or tokens.
How does blockchain enhance data security?
Blockchain uses advanced cryptographic techniques to encrypt data stored in blocks. This data is distributed across multiple nodes, making it nearly impossible to alter retroactively without consensus from the network. This ensures transparency and integrity.
What are smart contracts?
Smart contracts are self-executing contracts with the terms of the agreement directly written into code. They automatically enforce and execute contractual clauses when predefined conditions are met, reducing the need for intermediaries.
Is blockchain environmentally sustainable?
Certain blockchain implementations, especially those using Proof-of-Work consensus mechanisms, can be energy-intensive. However, many newer platforms are adopting more efficient consensus algorithms like Proof-of-Stake to minimize environmental impact.
How can businesses start adopting blockchain technology?
Businesses can begin by identifying specific use cases where blockchain adds value, such as enhancing transparency or reducing fraud. They may then develop pilot projects, collaborate with technology partners, or 👉 explore implementation strategies to integrate blockchain into their operations.