Blockchain applications were a widely controversial topic from the day of the appearance of bitcoins, and at the end what is crypto wallets ethereum. Opinions can vary from “blockchain, solve a huge number of human issues for this technology work exclusively for the installed price” and pleasant bonuses - for example, “this is useless”. I work in the market approved in 2017 and looked and analyzed a lot of ways to use blockchain. I cannot notice that i found any firm answer. Still, this article is considered a reliable starting point for the audience, who is also trying to realize that the blockchain can inflate for difficulties. At the start. I do not say that such problems cannot be solved. However, the main thing is to understand what the creators of the system offer ideas for individual problems. I do not declare how our hackers have not heard about the described problems or have not been resolved and have not yet avoided them. (Bitcoin), i'm going to apply this procedure without quotes. 1. Management of the supply chain
But what if you write some products and the carrier guarantees the support of specific transport requirements, on the list of which is maintaining cold goods. The proposed solution is to install a sensor in a truck that can control the temperature of the refrigerator and steadily transfer materials to the blockchain. You will also get a great chance to read that the promised conditions are executed along the entire route. Being part of the physical world, the sensor is easy to deceive. For example, a malicious carrier can cool only a modest refrigerator inside the truck, where they put the sensor, leaving everything in the unheard of the truck in order to save expenses.
I would describe a similar problem: in what ways:
Blockchain - in fact, is not the internet of things (iot).
We will return to this opinion a couple more times. Despite the fact that cryptocurrency excludes data modifications, the holder does not have time to guarantee that the online data is correct. The only exception was shown by translations in the chain, when the ram does not feel the need for a high -quality world, and all the acquaintance information is already near the blockchain, which makes it possible to check the information - for example, the address has many compositions for the transaction embodiment).
Fashion that extend the materials to the blockchain from the outside, are called “oracles” (see the article “oracle”, or why did the What is Proof-of-Stake in Crypto and How Does It Work intellectual contracts change the world? ”Alexander drygin). So far, for now, it is not possible to eliminate the question with the oracles, any attempt to manage the supply chains in the likeness of the blockchain, as well as the case above, in addition, it is meaningless, as well as an attempt to design a plane without first developing a reliable engine.
i borrowed the case of the refrigerator from the article “whether the blockchain was needed” by karl vyust and arthur zheve. I strongly recommend reading this material and pay close attention to the following diagram:
A great opportunity to earn money in the scm blockchain made maersk and ibm.
2. The guarantee of the authenticity of the object
Despite the fact that such a case is similar to the previous one, i dreamed of emphasizing it, since it was made in a different wrapper.
Say, we produce unique and most expensive goods, such as a watch, champagne or cars. We strive to ensure that our customers are completely sure that they will actually purchase the option made by our employees, so we connect our bottle of champagne with a token supported blockchain, and apply a qr code on it. In the new millennium, any step (from the manufacturer, carrier, store, to the buyer) is confirmed by a separate blockchain transaction, and the buyer can track his bottle online.
However, the specified system can vulnerable to the easiest threat: an unscrupulous supplier is able to remove a copy of a real bottle of token, fill it with wine more poorly to steal your expensive wine, or sell it to people who do not care about tokens. For what reasons is it available about you? This is true! Since ...
The bottle is a physical object, and where it is, it is easy to fake, excellent from the digital signature. .
3. Guarantee of the authenticity of the application
Let's accept the authenticity of the institute’s certificate as an example. In this situation, we will be useful to check the authenticity of the application (“peter studied at the educational institution”), but not a physical object. In order to have full confidence that the certificate is official, and the release time is accurate, we need to check the digital signature and time grade.Based on the "greatest invention of the 20th century." But let's not confuse the listed with blockchain. Indeed, the digital signatures existed and operated to us even before the blockchain was nearby. Today, digital signatures are often supplied as a blockchain. Perhaps a digital signature is absolutely everything that in such circumstances is really necessary and the blockchain actually contradicts the requirements you specified. In fact, the blockchain itself is the most high -quality method of temporary mark. The user does not need to invent anything: just place a hash of trusted information in bitcoin -blockchain.
Is this the best idea to place a health diploma hash signed by several professors on the bitcoins blockchain? Yes. Still, the main thing is not to be taxed by it, using a centralized check using a web site or an application, which will become the only point of refusal. .
4. Voting
When the question reaches a blockchain for voting before the work, we are forced to clearly clarify what kind of trouble we want to decide. In order to remove this task, we need a digital signature, but not blockchain. The main obstacle here is the personal key: where to master it and also how to store it. I will not explain why any network and here the key is generated in abundance, except for the device of the end user, is sorted by design. However, among other things, it is also required to have open source code and correctly check the software for the production of keys, third -party equipment (smartphone -maximally light video - and you who can process the closed key.
, While the developer of the system can determine the thickest two questions, the third is much more problematic. Bitcoin can actually help her to learn how to cooperate with keys. Indeed, the loss of password in personal accounting in messengers or your voice is the first, but the loss of the key from your finances is this is another story. A specific user, if it is important for everyone to build voting.
A publicly available counting of votes. It is worth assuming that, say, such ethereum contracts may be more optimal for such shortcomings, since they give the opportunity to see how many votes a particular candidate receives. However, here the case of frankness can be quite large, because our company is able to look at how any citizen votes and, with the help of this, affects them. Although the system happens that any voting can be seen only by the man who made it, there is another more task not easy: while voters are technically capable of conveying the priority of this preference of the voice, all, without exception, can be placed from pressure.
Ud: colleagues assure me that there is a decision: not subject to encryption. There were certain additional votes from non -existent voters.
Blockchain’s voting was sold to zug, estonia, western virginia. The correct review comes across here.
5. Proof of authorship
Suppose an artist and seeks to use a blockchain to register that a particular picture is his. He photographs this, puts the hash in the blockchain, and at the end it uploads a photograph of blogs. Today, if the artist b confirms that the picture belongs to him, the artist can easily prove his authorship, showing a photograph and a hash.
- First of all, the artist b may say that his use did not know about the blockchain and naturally, did not have time to use tea when authorizing his own authorship. Therefore, hair removal is certainly associated naturally, if it becomes ordinary practice. > the thing is that ...
, However, in general, a similar type of use is required. But this does not force anything but bitcoin's blockchain. The only confirmation of authorship, as the concept of personal property, in my opinion, is meaningless: “against the copyright” of stefan kinsella.
6. The land register
Another proposed case is the binding of tokens using a blockchain with the ground. In stock, at least two difficulties with this. Whereas a bottle/clock/car are transferred by one -rat (p2p), the ownership of the beds and the newsletter can be registered by the regulatory body, which can usually physically attend your work and ensure the adequacy of its will. What will happen from the record of the blockchain if the regulatory authority requires all customers to transfer their land? 1st method: the record of the blockchain again defines the supplier as a landowner, which is better not so; another method: the regulatory center has the right to create a personal entry and so, rewrite its own, which means that blockchain does not work.This is a critical point, since the blockchain also rises as a tool that protects the patient from unscrupulous actions as regulatory organs, at all of any individual officials.
Centralized improvement and assistance. Now, who wants to develop a similar design and joints of support? If the regulatory authority itself and its counterparty in this in order to carry out work, then a similar computer will not be decentralized. A decentralized protocol plus centralized development equals a centralized protocol.
, Moreover, any time that others add a blockchain, ask yourself:
Can we use a distributed register instead. ? Indeed, the blockchain is slower and higher the intensive resource. Also, the masters in the compilation and integration of lists are much more democratic and concrete easier to find their working product easier to check, and support for the system can also be.
Taking into account all the likely options, i think the distributed database of information, which is a much good solution for the land register recently, although it should definitely be more stable and open (see “blockchain as a trigger section ").
Indeed, it imitates this certain case of use has already turned into reality. Bitfury recently announced the launch of the blockchain register system built under exonum, and is entitled to make the same moldova in our country. It turns out that i was not able to find any technical details of this case, which means that for any reason bitfury is in no hurry to boast of this.
7. Interbank transfers
This option can be good in compliance with the scheme from "is the blockchain requested?" A number of parties are involved there, but they do not trust each other, without any reliable third parties. Although bitcoin is used by the field, banks most likely will not make their mutual payments publicly visible. That is why we would lay out a private blockchain, only we can enter data, support nodes and control transactions of any other parties.
From the standpoint of functionality, does this system differ from a distributed archive of information with access control? Of course, this is a reality, but only in that case the problem reaches the disagreement between the parties. Here the question is: will banks agree to the consensus proposed by the system, or will they appeal to the courts? If banks are able to find the second form (i.E. They have never signed an agreement on unconditionally adopt all the actions proposed by the system), a similar system has nothing. Also, the entire such option will be meaningless if regulatory bodies prohibit or limit the use of such systems or instruct the courts to refuse the data of the system. />
8. Token for the sake of token
We do not argue, this is so! I really write about ico this year. For the sake of token, ”consists in the fact that certain startups produce tokens and you can hear how they provide you with a prerogative of the share in companies/ profit/ split-free. Problem:
Blockchain is not iot!
And not as on investors of venture capital or regulatory authorities, the blockchain after them is not responsible for the startup or responsibility to their investors by the field of field, the promise, like only token, does not oblige the founders of the corporation, to decide something - something what did our organization see dozens of times during the ico boat (remember lamboos?). In this sense, ico looks more like crowdfunding than an ipo. You want or resort to existing tools or founders of trust.
Is strange enough, even non -working incidents are useful. Let's say the corporation uses a long -turned out process/system. Instead of choosing a normal and obvious decision, the leadership decides to invest in the hype (blockchain/big data/ai/iot) to get leadership. Proper system design, marketing money and media, as well as blockchain. Based on the situation, the blockchain is able either to give its advantages, or not to appear since they live precisely on the first slides of the presentation. In fact, blockchain. However, even if it comes to absolutely wrong, it is all the same as a reasonable proposal.
Money
The blockchain is very suitable for cultivating money, for example, since it remained organized precisely for the like. Blockchain registers and checks statements such as ‘side size x; the party was transferred x sum to the side b; party b owns x summ ', since all previous similar operators were introduced in some and their blockchain. The rules of the violation are often done at all, ”simon morris claims that the initial goal of decentralization is to violate the technique, since the one who complies with these requirements will try to stop you.
Bitcoin perfectly meets this requirement, because this violates the old rule, according to which only the government produces coins and bills, determines the distribution procedures and understands with, which transaction is valid and which is not.
That is extremely priority, i cumak that bitcoin plays a certain role: the transfer of values that existed many time before the technology is convenient just manner (see “origin of funds” of nika sabo). At the same time, the majority of blockchain startups should explain from the start what problem they solve and because of something that is meaningless for classic startups, which, as usual, are looking for customers, testing hypotheses and want to remain synchronization with the market, in other words to solve the emergence of problems, but not invent new ones.
At least bitcoin is the only blockchain operating application. This is how to explain this, at the very beginning of my article, i questioned the relevance of the term “use of blockchain”. But rather the next blockchain, which, in particular, is used by decentralized exchange, which lists the tokens of the third blockchain. Who is aware of, the industry may actually manage to get himself out of the swamp like that. In its infancy. Ethereum really ahead of the curve. By the hour when the decentralized bitcoin entered the plot, citizens have already had and were used for an internet monet; by the hour when we received decentralized smart contracts, which work on ethereum, our company still tried to deal with hardworking contracts, in those days as centralized intellectual contracts are only absent. We are happy to try to return to 2 stages at the same time, but for this we are worth a renome and a viable concept. That is why i already work in this area. However, this is my personal belief, which has not yet been confirmed so as not to be refuted.