Editors note: The opinions expressed in this commentary are the authors alone. Kenyon Briggs is an attorney at Husch Blackwell in Kansas City. This op-ed is part of a limited series on blockchain sponsored by Husch Blackwell.
What is blockchain technology?
Technically precise definitions found on Google define it as a distributed, decentralized, public ledger. But, what does that mean?
In its most basic and general form, simply think of blockchain technology as a new method of securely storing and processing data. At its core, blockchain technology is simply a new ledger technology that can store information.
Kenyon Briggs, Husch Blackwell
Ledgers have been used throughout history to track and organize information. Think back to the years when hotels used guest ledgers to track overnight stays. Accountants used to track all of a companys bookkeeping entries in physical books.
Speed forward a few years and ledger software like Microsoft Excel, Google Sheets, and QuickBooks, allows companies across the globe to easily organize and share vast amounts of information. Blockchain is simply a new ledger technology that can organize and store information, but in a much more secure way.
Blockchains ability to organize and store vast quantities of information has the potential to solve real world problems.For example, prescription drug recalls are often imprecise, and it is difficult to spot exactly where in the manufacturing and distribution chain something went wrong.
In response to this problem, IBM, the Food and Drug Administration, KPMG, Merck, and Walmart announced a collaboration to use blockchain technology to better track each drug along the manufacturing and distribution chain. The collaboration hopes to save lives and reduce waste by being able to more accurately recall defective prescription drugs.
With that understanding in mind, it is important to explain how blockchain technology works at a high level (interested readers can dive deeperhere). Blockchain technology gets its name from the chain of information stored in blocks all strung together.
Lets say you want to add and store new information on a blockchain. Before new information can be added to the chain of information (i.e., the blockchain), that information is often validated by members of the blockchain, which is also referred to as obtaining a consensus.
These members are referred to as nodes, wherein a node is a distinct computer that stores a copy of the blockchain. For most public blockchains, nodes are extremely powerful computers. In addition, larger blockchain networks may comprise tens-of-thousands of nodes spread out across the globe.
After the information to be added to the blockchain is validated, that information is packaged into an encrypted block, timestamped, and published onto the end of the blockchain with its own unique, encrypted serial number (called a hash function). Every time a new block is added to the end of the blockchain, all of the previous blocks serial numbers are embedded into the code of the new block. This is referred to as chaining blocks together.
The superior security that blockchain enthusiasts tout comes from the combination of chaining blocks together in a time-stamped manner and the decentralized nature of the system as the data is stored on multiple nodes across the network. Decentralized just means that a copy of the blockchain is stored in multiple locations and not on one centralized computer server.
The architecture of a blockchain ledger system would require a potential hacker to hack each node and change each nodes individual copy of the blockchain rather than simply hack into one server and modify the centralized copy.
In summary, blockchain technology is a new type of ledger for electronically storing data that bears resemblance to other ledger software and organizes similar types of information.
Without diving much deeper into the technical side, the key difference between blockchain technology and other types of ledger software lies in themethodby which information is added to the ledger and how entries of the ledger are chained together in a time-fixed relationship. A majority of nodes/computers on the blockchain network must validate, encrypt, and chain all of the information together, which results in an incredibly secure set of information that all parties with access can trust to be accurate.
Trust can then be put in the method and authenticity of the data in the ledger due to the inherent architecture and validation mechanisms of a blockchain, rather than placing trust in individuals to enter the information correctly.
Kenyon Briggsis an attorney in Husch Blackwell LLPs Kansas City office.
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