Transferring value, funds, or money, we are usually forced to rely on â€śold-fashionedâ€ť, centralized financial establishments like traditional banks.
Online payment systems such as PayPal, still require integration with a bank.
You need a bank account or credit card to be able to use these services, thus a big percentage of the developing world is still considered unbanked even though they are widely using services over the internet.
With blockchain technology, beginning with the notoriety of Bitcoin, offers a disruptive possibility of being able to eliminate the â€śmiddle manâ€ť, also known as disintermediation.
Disintermediation, by definition, is the reduction in the use of intermediaries between producers and consumers, for example by investing directly in the securities market rather than through a bank.
Blockchain technology does this by fulfilling three important roles â€“ recording transactions, establishing identity, and establishing contracts â€“ something usually done by the banks or financial servicesâ€™ providers.
Blockchain technology may allow peer-to-peer trading of energy or ride sharing such as commuters may be capable to directly hire car services via a mobile application.
In Germany, blockchain is being used to enable electric vehicle charging where hundreds of charging stations â€śchargeâ€ť by using the Ethereum Smart Contract.
With blockchain, the potential to disrupt legacy industries is limited only by the human imagination.
Blockchain is a public record of transactions, and itâ€™s also a distributed database.
Instead of just one person or organization controlling everything, there are thousands of computers globally connected to a network, thus itâ€™s this network which is required for an agreement on which transactions are valid.
Whenever someone makes a transaction, it is broadcast to the network, and the network runs complex algorithms to determine if the transactions are valid, only then are they added it to the record of transactions, linking it to the previous transaction, a growing list of sequential records, called blocks.
Each block is date and time stamped to link to a previous block, this chain of linked transactions is known as the blockchain.
Since the transactions all reference the one before them, one can figure out which ones came first, thus eliminating which is the correct sequence.
One can think of the blockchain as a very long â€śspreadsheetâ€ť you have a copy of the spreadsheet and your friend â€śJohn Smithâ€ť has another copy.
Since all the activities or transactions are recorded in a â€śblock chainâ€ť of data, itâ€™s easier to establish identity by incorporating the details of a person in the recorded transaction.
Imagine a digital medical record: each entry is a block.
It has a timestamp, the date when the record was created, and by design, that entry cannot be changed retroactively, because we want the record of diagnosis, treatment, etc. to be clear and unmodified.
Only the physician, that has one private key, and the patient, who has the other, can access the information.
Only then is information shared when one of those users shares their private key with a third party: a hospital, clinic, specialist, or potentially- a clinical trial.
This establishes identify for that patient, and with this technology the patient continues to own their personal information and they can access it anytime without going through a â€śmiddle manâ€ť thus maintaining complete control over the records.
This security is built into a blockchain system through the distributed timestamping server and peer-to-peer network, and the result is a database that is managed autonomously in a decentralized way.
A unit of a value (like a bitcoin), blockchain can be used to store any kind of digital information, including computer code.
That snippet of code could be programmed to execute whenever certain parties enter their keys, thereby agreeing to a contract-these are known as â€śsmart contracts,â€ť and the possibilities for their use are endless.
For example, it might be put to use in the regulation of intellectual property, controlling how many times a user can access, share, or copy something.
While the potential uses for blockchain are vast, the technology is not yet perfect. It requires more experimentation by businesses and governments before scale these solutions are widely accepted.
How blockchain may impact education
Imagine a digital native student receiving a customized learning experience from a dozen institutions located around the globe. The student enrolls in their primary University and is assigned a knowledge facilitator, who works with the student enabling and assisting in desired outcomes. The student might enroll in a primary University in Brussels and register to take a machine learning course from a University in the US or the UK.
This potentiality of next-generation faculty may create a context in which students from around the world can participate via online discussions, forums, and wikis to discover, learn, and produce knowledge as a community of learners who are engaged directly in addressing some of the worldâ€™s most complex issues.
Blockchain will be the underlying technology that allows this integration of learning, and records from different institutions for each subject and each module completed, steadily building an individual studentâ€™s list of academic accomplishments.
Cryptocurrencies like Bitcoin have serious supporters, and detractors too, not just those who got into them early.
Currency may be considered as the storage of money as such it can be exchanged, whereas Crypto implies secret.
When someone uses their credit card, which is usually electronic, everyone â€“ the buyer, seller and third-party processor â€“ knows everybody else.
The difference is that Bitcoin uses the blockchain technology, which may make it less expensive and easier to do the transaction-bitcoin and with the other 1,658 cryptocurrencies as of March 16, 2018.
It may be crypto, but it is not currency-our Euros, Dollars, Yen, etc., can be exchanged for goods and services-cryptos however, are not readily exchangeable universally.
In summary, and until that changes, cryptos are deemed by some as a speculative investment that may or may not make a profit.
Perhaps some of the â€śexcitementâ€ť of the cryptos comes from knowing crypto wealth might be part of the nearly $1 billion stolen by computer hackers in 2018.