Even though cryptocurrency is still a controversial discussion topic, there seems to be a consensus that blockchain, the technology behind cryptocurrency, is revolutionary. I can see that blockchain has at least one vulnerability. IBM and Microsoft are leaders in cloud blockchain services. In other words, the involvement of third-party arbitrators, such as banks and governments, to verify or authorize transactions is not needed in a blockchain platform.
I find it amusing when projects talk about "storing" data, especially personal data, on a blockchain. This is the second course in the Blockchain Fundamentals Professional Certificate program. Making use of the Ethereum blockchain, a Provenance pilot project ensures that fish sold in Sushi restaurants in Japan has been sustainably harvested by its suppliers in Indonesia.
Big blockhain players like Microsoft are beginning to get into the standardization game as well, with Redmond releasing its own Coco Framework to work with existing protocols and build more powerful governance and data confidentiality into private blockchains.
Many people look at Blockchain as nothing more than a digital ledger system and s ome people even see it is synonymous with Bitcoin. This puts you at the risk of security breaches just like in a centralized system, as opposed to public blockchain secured by game theoretic incentive mechanisms.
Blockchain serves as a bookkeeping platform or ledger that is incorruptible, enforces transparency, and bypasses censorship. The more transactions processed on the Bitcoin network, the faster the size grows. Similarly, Ethereum itself has been informally called the world's supercomputer” because of its ability to execute smart contracts and its mining is ASIC resistant (allowing everyday PC owners to compete proportionally with big mining operations).
This is the case in point with bitcoin, which is why so few cryptocurrency miners actually blockchain technology find that validating transactions on bitcoin's blockchain is worthwhile (and profitable). Most blockchain explorers are heavily indexed and easily searchable, allowing you to locate transactions in a number of different ways including by IP address , block hash or other relevant data points.
Blockchain is the digital and decentralized ledger that records all transactions. Crunchbase, a business-information firm, reckons that in the first five months of 2018 blockchain startups raised more than $1.3bn from venture-capital firms, compared with around $950m in the whole of 2017.
If you think of blockchain as an operating system for data, then smart contracts are its killer app. Tip: Now that the transactions within a block are deemed valid it is attached to the most recently verified block in the chain, creating a sequential ledger which is viewable by all who desire.
Trust placed in the capabilities of the technology to verify transactions replaces trust placed in costly third parties. Blockchain technology could also reduce manual manipulation to increase financial efficiency. Blockchain is essentially a global public ledger capable of automatically recording and verifying a high volume of digital transactions, regardless of location.
As a peer-to-peer network, combined with a distributed time-stamping server, blockchain ledgers can be managed autonomously to exchange information between disparate parties. The blocks are added through cryptography, ensuring that they remain meddle-proof: The data can be distributed, but not copied.
In more advanced stages, the technology could give rise to what Gartner calls "the programmable economy," powered by entirely new business models that eliminate all kinds of middlemen, machine networks in which devices engage in economic activity, and "smart assets" in which some form of property such as shares in a company can be traded according to programmable or artificial intelligence-based rules rather than the control of a centralized entity.