Wednesday, 28 March 2018

Week 1 [26.03-08.04] Realizing the Potential of Blockchain

Blockchain, or distributed ledger technology, could soon give rise to a new era of the Internet even more disruptive and transformative than the current one. Blockchain's ability to generate unprecedented opportunities to create and trade value in society will lead to a generational shift in the Internet's evolution, from an Internet of Information to a new generation Internet of Value. The key to enabling this transition is the formation of a multistakeholder consensus around how the technology functions, its current and potential applications and how to create the regulatory, cultural and organizational conditions for it to succeed.

Please read article and anwer questions:
https://hackernoon.com/popular-use-cases-of-blockchain-technology-you-need-to-know-df4e1905d373

1. Do you know another possible applications of blockchain technology?
2. Where blockchain should not be applied?
3. Which blockchain is best for with application?
4. What is your opinion about private vs public blockchain?

43 comments:

  1. 1. Do you know another possible applications of block chain technology?

    Excuse me, I have never thought about blockchain technology so far. I will consider the possibilities of this type of solution wright now, because it seems to be very interesting.

    2. Where block chain should not be applied?

    The block chain shouldn't be used where there is no need for strong authentication. But today is increasingly difficult to get parts of the operation that do not require authentication.

    3. Which block chain is best for with application?

    100% chain with hash code.

    4. What is your opinion about private vs public block chain?

    A private and public chain is extremely important when we deal with private and business (official) matters. It is important that the authentication in this case is 100% reliable.

    ReplyDelete
  2. Before I get to the questions, I must share this: https://supporters.eff.org/civicrm/mailing/view?reset=1&id=2791

    There is a lot of buzz around "the blockchain technology", distributed ledgers etc. The "price" or "exchange rate" of many cryptocurrencies has plummeted, so we turned to the "technology behind".

    Cryptographic protocols for establishing trust have not been invented by Satoshi Nakamoto, and the hype around them resembles the dotcom bubble of the turn of the century.

    The premise is, that this will change everything we have known, and will transform every aspect of life. This is patently false. The absurdity of such claims reminds me of the scene from a rom-com called "My Great Greek Wedding" (or such), where the main character's father convinces everybody, that all words have a Greek root. "Take any word, any word, and I'll show you how the root of that word is Greek. For example: arachnophobia!" - and so on. A schoolgirl then asks about the Greek ethymology of kimono.

    So I don't think blockchain will turn on its heads many of the following: HVAC, civil engineering, maritime transport, preschool education, baked goods, veterinarian medicine ... This list is far from comprehensive.

    It has problems with scaling, which I don't want to go into right now, and the only way it could be "disrupting" anything, would be if the wet dream of the financial sector came true and we would be paying for everything cashless. But they don't need blockchain for that - standard centralized solutions are doing fine. The credit card companies have all the storage they need to process even the minutest of our transactions.

    1. Do you know another possible applications of blockchain technology?

    It could be some alternative for the current SSL/TLS authentication scheme (instead of CAs of the PKI), at least for non critical infrastructure. All on-line traffic should preferably be encrypted, and the SSL certificates are expensive and only limited to WWW, VPNs and very few other similar places. With a reliable mechanism for a wide and accessible identity confirmation we would finally have the communication channels we should have, without voyeurism from FANG companies' employees (and their government and b2b customers).

    2. Where blockchain should not be applied?

    Anywhere else, really. For example, it's not really conducive to tamper proof / evident AND anonymous voting.
    Internet as such not being "anonymous" notwithstanding.

    3. Which blockchain is best for with application?

    I don't understand this question. But I'll try to answer. The first "blockchain" is the Git DVCS. It hashes every asset, there is a chain of blocks called revisions, and it is then distributed to all the parties involved. If someone tampers it (does a force-push), the others WILL know. I suggest you use git for all your applications.
    (also, forking - so deadly to bitcoin and other "coins", is actually a common and benign event to Git repositories).

    4. What is your opinion about private vs public blockchain?

    I see no difference there - any private blockchain can become or be made public - willingly or not. But for my blockchains, I will sure keep at least some of them private on the side.

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    1. Hello Tomasz.

      I my opinion blockchain technology is not about cryptocrapic security of encrypted data (bc tech itself does not fit storing data at all), it is more about applicable in any envronment whre trust among participatns is an issue. In simple words Blockchanin is not good way of data decentralization (we have distributed databases) it is not good way of keepings things secure (we have client siede end to end encryption), but it is wery good in trusless environment due to its authentication mechanism.

      Ad second question it is more about which blockchain technology implemntation is best for what for example Ethereum is good for issueing new crypcurencies, Ripple is good for procesing financial transactions, and Hyperledger Indy is good for managing e-Identity.

      Permisioned - Privte bc's are more secury and keep in most cases are more anonymous for its users
      Permisonless - Publick bs's are mostly opnesourced and more vulnerable for hacker attacs
      so there is clear diference between them

      Delete
  3. 1. Do you know another possible applications of blockchain technology?
    Yes, this topic was discussed last winter term. We were talking about such solutions as: a new debit card that will allow users to spend cryptocurrencies across the UK, the telemedicine or CDNs. For sure the financial industry may benefit a lot. In general, anything that has allowed you to encounter security or credential issues has a chance to participate in this technology.

    2. Where blockchain should not be applied?
    It’s hard to say but I think that everywhere where the anonymity is not welcome. Blockchain has great potential in ensuring anonymity, and if it is misused, it can be tragic.

    3. Which blockchain is best for with application?
    I’m not an expert to decide on such matters however I suppose that it depends on the nature of the application. Sometimes it depends on anonymity, sometimes on dissemination and sometimes on the quality of encryption. In any case, the author of the application should decide on the method of using this technology.

    4. What is your opinion about private vs public blockchain?
    Both are important and are needed. Of course, it depends on the context. In my opinion public blockchain may find much more applications but the private one is also needed, especially where we will deal with personal data and their protection. As far as I’m concerned the boundary between private and public blockchain is only conventional.

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    1. Hello Damian,

      Thank you for sharing your thoughts, but i do not totally agree if it comes for third question.
      In publick blockchains we need to encourge stakeholders in participating in the consensus by some kind of reward (like in case of PoW or PoS consesus). In Prive blockchains like Hyperledger Fabric or Tendermint Interested parties are taking resposibility of network sustainability on them.

      Delete
  4. 1. Do you know another possible applications of blockchain technology?
    Most of the applications are listed in the article, but recently I have found one that has not been mentioned. It is about free mobile services thanks to advertising revenue. This revenue is shared using blockchain technology. Thanks to this, we can have free calls, text messages and data transmission with unlimited roaming all over the world without paying bills (www.mobilink.io).
    2. Where blockchain should not be applied?
    Blockchain technology should not be used where anonymity may pose a threat to other people.
    3. Which blockchain is best for with application?
    I do not fully understand what this question concerns. For a public/private blockchain, this depends on your specific application. In private blockchain anyone can participate, without permission. Transactions are transparent, but anonymous/pseudonumous. In private blockchain write permissions are kept centralized to one organization. Read permissions may be public or restricted to an arbitrary extent. Example applications include database management, auditing, etc. which are internal to a single company, and so public readability may in many cases not be necessary at all.
    4. What is your opinion about private vs public blockchain?
    As I mentioned earlier, the choice of type depends on the specific application. However, it is certain that both private and public blockchins have their advantages and disadvantages. For business applications, a private blockchain is much better. In systems that are to be accessible to everyone, it must be a public blockchain, which is slower but does not require permission to read/write.

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    1. Hello Przemyslaw,

      Thank you for sharing your thoughts. Im my opinion it is oposit permisionless blockchains does not provide anmimity becasue your wallet addres is visible and trackable by whole network and in case of permisioned blockchains it is not.

      Delete
  5. 1. Do you know another possible applications of blockchain technology?

    As far as I remember I heard about app which is alternative to Facebook but based on blockchain technology. I may be wrong, but I think that with blockchain technology it is possible to create such application.
    2. Where blockchain should not be applied?

    I will go with the same answer as people before. So we should not applied it in places where anonymity is not welcome.

    3. Which blockchain is best for with application?

    Przemysław already answered this question very nice. We should choose technological stack based on our needs. So, on one side public blockchain will be better for, applications with "open access" or publicliy available. When it comes private you can use it in enterprise enviroments or places when security is the most important thing. But from my experince in choosing stack one little thing can decide whetever you will go with private or public blockchain.

    4. What is your opinion about private vs public blockchain?

    Same as above. My only concern is that, is this technology is not only next buzzword and very over hyped word(same as it was with NOSQL, microservices and others) and now people will try to implement everything in it and later there will be terrible mess with maintaing this kind of apps.

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    1. Hello Tomasz

      Yes there is social network based on bc technology and it is called userfeeds and is being developed by polish team :)

      Delete
  6. 1. Do you know another possible applications of block chain technology?

    Yes, there is already a system, developed by IBM and Samsung, which cooperated during the development. It is called ADEPT - Autonomous Decentralized Peer-to-Peer Telemetry. It is based on the concept of Internet of Things, but it is decentralized. The general idea was to build a distributed network of devices, which uses the blockchain database. The main goal was to make the network secure, but on the low-cost. Simply put, it eases the using of different divices, such as dishwashers or refrigerators. By example – one of the devices, like washing machine, can initiates the procedure of „smart contracts” if it is out of the washing powder, to issue commands to the retailer supplier to provide such powder. Then, the contract gives the device the ability to pay for the order and later receive notice from retailer that the detergent was paid for and shipped.

    2. Where blockchain should not be applied?

    I think the place, where blockchain should not be applied, is the prosecutor’s office. In Poland, the proceeding which are heading by the prosecutor, is strictly confidential. It contains very fragile data about a person, who is not yet convicted. On the other hand, there is a possibility, that in the process of developing the technology of blockchain, the hackers at some point will find a way to get through the security system and will steal the data. In case of the mentioned proceeding, it would cause some serious, irreparable damages, such as defamation of the possibly innocent person.

    3. Which blockchain is best for with application?

    In my opinion the Ethereum blockchain is best for building new blockchain’s applications. There is the Ethereum Virtual Machine which is a software that enables anyone to run any program
    regardless of the programming language given enough time and memory. The main benefit of this blockchain is that instead of having to build an entirely original blockchain for each new application Ethereum enables the development of potentially thousands of different applications all on one platform.

    4. What is your opinion about private vs public blockchain?

    I think that if you don’t want to have an anonymous participatns in your blockchain the private blockchain is the only choice. The reason why I am sure of it is that only the private one requires an invitation and must be validated by either the network starter or by a set of rules put in place by the network starter. In other cases I can’t see any important differences between public and private blockchains.

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    1. Hello Lukasz
      Does not heard before about ADEPT solution thank you for sharing this concept with the group it is nice to lear new things

      Delete
  7. One of the potential uses of a blockchain is a distribution of a value of internet communities across their members. I encountered this idea on YouTube where Siraj Raval proposed using tokens to "pay" users for contributing in some way to his initiative that can be exchanged to for example promotion of their own content (here is the video: https://www.youtube.com/watch?v=X9QqQ2EmD9o). Rewarding active contributors could lead to faster growth and maturing of such communities.

    As for more "serious" applications like securing execution of contracts, I think that it isn't the best idea. Let's take Joe's example from the article. Currently, there exist solutions to prevent such situation - an escrow. Basically, a client transfer funds to a separate account, but a contractor receive it only after conditions of a contract are fulfilled. After all, for most contracts, you can't automate the process of acceptance of contractor's work. In this case, the solution indeed could help Joe to receive his money but would be harmful to the other party in the opposite scenario where Joe was fraudulent.

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    1. Hello Adam
      Totally agree with you about 'smart' cotracts implementation with bc technology, thank you for sharing

      Delete
  8. 1. Do you know another possible applications of blockchain technology?

    For me the most important possibilities for usage of blockchain technology is preventing voter fraud which seems a big deal nowadays. Such system can secure an election during voter registration, and can account for the voters identification and insure votes cannot be tampered with at a later date. Secondly improving government efficiency and security. What can be visible for everyone is supply chain. When ordering a meal in an exclusive restaurant, we trust that the ingredients are of the highest quality. We trust that the olives come from Spain or Greece. We trust that the ingredients are fresh and that they will save, when traveling to our plate, they did not crown the entire world, where it would lose its value or worse - for the changed. This type of information can be stored in a chain that connects to the chips. It is obvious that you can not face them. Therefore, as follows: with blockchain, you can track the shipment status from product sources in real time - all in a decentralised, dispersed world and resistant to manipulation. In general I could write a lot of other examples, because usage of blockchain be found everywhere.

    2. Where blockchain should not be applied?

    It depends on the point of view. From the point of person who likes privacy and does not want to be traced at every step I think that it should be used everywhere, but as a government, bank or any other financial institution I would definitely like to have transparency of users and transactions.

    3. Which blockchain is best for with application?

    This question is too general to answer unequivocally. Just like my predecessors, I think that every application, after checking the requirements and architecture, can make such choices.

    4. What is your opinion about private vs public blockchain?

    Anyone can participate in a public blockchain because it is open-source and public to all where no one is in charge. There is no access or rights management done for a public blockchain and anyone can be the part of the consensus which may lead to problems. Private Blockchain is an absolute opposite of public blockchain. It is because many functions that are open to all on a public blockchains aren’t open here to all here. Here one can’t read/write or audit the blockchain anytime unless one has the permission to do so and for me it makes more sense.

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    1. Hello Cezary,

      Thank you for your thoughts, but we need to keep in mind that decetralized does not mean the same as trustless. In case of decentralization implementaion like in Ethereum we still need to trust the dAPP developer.

      Delete
  9. 1. Do you know another possible applications of blockchain technology?

    Maybe openBazaar platform. This is a place similar to Allegro, where you can buy and sell virtually everything without fear that the item will be removed. This platform is decentralized.

    2. Where blockchain should not be applied?

    It's better not to use blockchain where safety is not required

    3. Which blockchain is best for with application?
    The Ethereum’s open Blockchain is good to use in smart contracts between a customer and client, creating contracts, repaymant of debt, etc.
    The ICO can be used to increase investment. Tokens stored in the blockchain wallet are used to pay for the company's services
    The Storj is a decentralized clipboard for storing files using the disk space of other users

    4. What is your opinion about private vs public blockchain?
    Analyzing the way the blockchain application works, I think that it does not matter whether we use private or public blockchain.

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    1. Thank You Piotr, I have never heard about openBazaar platform I will give it a shot

      Delete
  10. 1. Do you know another possible applications of blockchain technology?

    Yes, I heart about ADEPT project (lukasz said more information about it earlier). I didn't know any other application or project which is using this technology.

    2. Where blockchain should not be applied?

    I think that this is new, great technology, but it shouldn't been using for small project. If developers know, that their application will not really popularity common, centralized system would be better. Central system get us one more profit-it's easier to control all transaction.

    3. Which blockchain is best for with application?

    It depend...for what application? What we want to achive? Public or private blockchain have different approach.

    4. What is your opinion about private vs public blockchain?

    Both will become more and more popular. The open-source license will provide them with constant development.

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    1. I need to disagree on not applying blockchain in small project, it always depends on problem you are solving

      Delete
  11. 1. Do you know another possible applications of blockchain technology?
    What interested me in this respect, are the following:
    a) Big Four Accounting Companies - are testing blockchain technologies in various formats. Ernst & Young has:
    - provided cryptocurrency wallets to all (Swiss) employees,
    - installed a bitcoin ATM in their office in Switzerland,
    - accepted bitcoin as payment for all its consulting services,
    PwC, Deloitte and KPMG have taken a different path from Ernst & Young and are all testing private blockchain.
    b) Publiq, a platform for authors founded in 2017, aims to use blockchain technology to guarantee authenticity of texts, avoid censorship, and combat fake news.
    c) IoT: The network-controlled management of certain types of electronic devices — for instance, the monitoring of air temperature in a storage facility. Smart contracts make the automation of remote systems management possible. A combination of software, sensors, and the network facilitates an exchange of data between objects and mechanisms. The result increases system efficiency and improves cost monitoring.
    d) Neighbourhood Microgrids: Blockchain technology enables the buying and selling of the renewable energy generated by neighborhood microgrids. When solar panels make excess energy, Ethereum-based smart contracts automatically redistribute it. Similar types of smart contract automation will have many other applications as the IoT becomes a reality.

    2. Where blockchain should not be applied?
    I cannot see such limits. In my opinion it depends always, in every case of potential usage, on the decision makers. It shall be always conscious acting.

    3. Which blockchain is best for with application?
    These are the examples of “the best” ones:
    a) Steemit: a blogging/social networking website and a cryptocurrency,
    b) Hyperledger: supporting blockchain-based distributed ledgers, with projects under this initiative including Hyperledger Burrow (by Monax) and Hyperledger Fabric (spearheaded by IBM),
    c) Counterparty: an open source financial platform for creating peer-to-peer financial applications on the bitcoin blockchain
    d) Quorum: a permissionable private blockchain with private storage, used for contract applications.
    e) Bitnation: decentralized borderless "voluntary nation" establishing a jurisdiction of contracts and rules, based on Ethereum,
    f) Tezos: decentralized voting.

    4. What is your opinion about private vs public blockchain?
    In my opinion there should be no artificial difference between those two kinds of blockchains. The rule is the same, the only contrast is that to public blockchain networks, validators on private blockchain networks are vetted by the network owner. They do not rely on anonymous nodes to validate transactions nor do they benefit from the network effect. Permissioned blockchains can also go by the name of 'consortium' or 'hybrid' blockchains. From mechanism of acting point of view, I cannot see the difference. And this also shall polarize the analysis in this respect: the ads and cons are the same.

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    1. Hello Marta

      This is replay that I was waiting for. Realy nice read, thank you for sharing

      Delete
  12. 1. Do you know another possible applications of blockchain technology?
    The article lists lots of applications, and others (possibly interesting) in comments above, but I find probably all of those somehow overrated.
    2. Where blockchain should not be applied?
    Resistance to tampering is cited as a strength of blockchain. Looks OK on the surface, but once we start to dig deeper into details, it turns out to be its weakness.
    The real world is something different than idealised world painted by proponents of blockchains everywhere. We might not like regulatory bodies, and courts, but it all changes once someone hacks our digital wallet and our precious coins vanish.
    European GDPR? What if someone puts into blockchain some data protected by directive? Or a libel? Or proverbial child porn or some copyrighted poem?
    Other "feature" is misconception that someone can store data in blockchain for free. It is not true, all blocks have to be backed up by electricity burned to mine next coins. The example with trading electricity using blockchain - it's like somali shilling that is counterfeited until its price equals production cost.
    Smart contracts? It is all fine and dandy when we operate in virtual realm. Once we touch reality, we still need some arbitrage on contract's terms are met.
    And for the record, current sustainable transcations per second rate for Bitcoin is 7.
    3. Which blockchain is best for with application?
    As Tomasz mentioned - Git. It is not a typical blockchain, but the basic rule of working is the same. And even here - sometimes the history must be rewritten. But at least we don't lie to ourselves that it doesn't.
    4. What is your opinion about private vs public blockchain?
    There is no difference, both private and public are highly overrated. My first thought when reading or listening some blockchain enthusiast is "what is happening? the whole world can't go mad" but then I remember tulips.

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  13. This comment has been removed by the author.

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    1. Pawel Markowski8 April 2018 at 20:41
      Hi

      Unfortunately blockchain is not a field that I as good as I want. I read an Article and it gave me a lot of information about BlockChain. It has very nice drawings that gave an reader visualization of the paragraph content.

      1. Do you know another possible applications of blockchain technology?
      As I wrote above - I am not an experts but I have seen an article about tool used in supply chain management that were based on BlockChain. Unfortunately I do not remember the name of this tool.

      2. Where blockchain should not be applied?
      I am not sure if such limitation exists. We should use that technology, which is able to meet our needs. I can not tell: we should not use blockchain technology in for instance social media (bad example :)), because other people might be able to implement blockchain in this field efficiently.

      3. Which blockchain is best for with application?
      As I wrote above - one, the best solution does not exist. You have to analyze requirements to choose best one in specified use case.

      4. What is your opinion about private vs public blockchain?

      As my colleagues wrote above - in my opinion it should not be any difference between this two kinds of blockchains. Only validation is performed in private network by limited bodies. In public blockchain validation is performed by wider society than in private one.

      regards.

      Delete
    2. Pawel, thank you for your comment. Blockchain is interesting topic so I encourage you to deep dive in to it

      Delete
  14. This article was very useful for me in case of my specialization because I am working with data analysis. I am working in the institution where this technology of blockchain can be widely used.

    1. Do you know another possible application of blockchain technology?

    First of all, I should say that blockchain helps to save customers privacy. In my everyday life I use messenger based on this technology - Telegram. Therefore, bitcoin transaction also supports the blockchain.

    2. Where blockchain should not be applied?

    In my opinion transactions that are based on blockchain technology should not be applied, because using this person can escape from taxes or buy illegal items.

    3. Which blockchain is best for with application?

    The best for application is the blockchain technology using hash codes.

    4. What is your opinion about private vs public blockchain

    Authentification is important in private and public as well. Deals with clients, business operations, contracts between companies both have a need in anonymity. From the government side privacy is still extremely important because it is used in election system, medicine, education etc. That’s why I strongly believe that blockchain technology is an arise of new age of network.

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    1. I agree with you that one of the applications which have hight demand is election systems

      Delete
  15. 1. Do you know another possible applications of blockchain technology?
    I must say that blockchain is a bit of black magic for me 😊 But I noticed that we are finding almost every month there are new concepts of using blockchain from finance to medicine. This is truly fascinating

    2. Where blockchain should not be applied?
    Hard to say. For sure if you don’t need to push a lot of resources into security (like authentication) I think that in such situation you do not need to think about blockchain.

    3. Which blockchain is best for with application?
    I am sorry but I do not understand the question

    4. What is your opinion about private vs public blockchain?
    I think that is a very similar situation to private vs public cloud. We need both, but there are created for different reasons so it depends on the context and needs

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    1. Dawid, thank you for your comment. Blockchain is interesting topic so I encourage you to deep dive in to it

      Delete
  16. 1. Do you know another possible applications of blockchain technology?

    One more interestiong applications of blockchain is in a micro - loans market. This relationship demands a bit higher level of user identification than most of services.

    2. Where blockchain should not be applied?

    In areas which should be controlled by government. It is a wider discussion what exactly should be controlled.

    3. Which blockchain is best for with application?

    I think it depends on assumptions about particular solution. If full identification is required, and solution is dedicated to restricted group of users - private blockchain should be applied.

    4. What is your opinion about private vs public blockchain?

    It depends on kind of solution we would like to implement this technology. I have general opinion about blockchain. The idea is interesting but current solutions are slow and expensive. Probably we should wait few years and use imroved solutions.

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  17. 1. Do you know another possible applications of blockchain technology?
    I'm far from being an expert in this field, so I can't easily answer this question. Probably anything related to cryptography. Generally, hashing mechanism can be used on any data. Instead of remembering the input data which could be huge, you can just remember the hash and keep track of it.
    2. Where blockchain should not be applied?
    Hard to say, maybe on low performance IoT?
    3. Which blockchain is best for with application?
    Let's make a quiz, what author had in mind?
    4. What is your opinion about private vs public blockchain?
    In my honest opinion, Dawid gave the best example. Private blockchain is designed to be used inside of an organization. Public is open for anyone. To avoid copy pasting what's already written by so many people I will just link very good article about it:
    https://www.ibm.com/blogs/blockchain/2017/05/the-difference-between-public-and-private-blockchain/

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    1. In third question I meant rather which implementation of blockchain can be used in specific applications. Thank You for answering questions

      Delete
  18. 1. The article presented many possibilities of using blockchain, also my previous speakers pointed out some really valid points.
    2. There's no need to use blockchain in instances where safety precautions are not required.
    4. I agree with Dawid. the case with private and public blockchain seems to be the same as with private and public cloud. Both are useful and both are needed, as they have different applications.

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  19. 1. Do you know another possible applications of blockchain technology?

    I think that supply chain management, where every asset would be tagged with RFID tag and must be checked on proper stage would be a good example of useful application.

    2. Where blockchain should not be applied?

    Everywhere, where this kind of distributed database is not determined by rational reasons but by current, marketing fashion.

    3. Which blockchain is best for with application?

    Right now we can observe that cryptocurrency is doing pretty good with that approach.

    4. What is your opinion about private vs public blockchain?

    I think that every rational reason which is supported by a business case could support the development of private blockchain. I'm not a freak which is focused on making every distributed database public-available.

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    1. Thank You for your comment, in third question I meant rather which implementation of blockchain can be used in specific applications

      Delete
  20. 1. Do you know another possible applications of blockchain technology?
    The possible applications of blockchain are digital voting,distributed storage, smart contacts etc. My knowledge about that do not exceed what was written in article and by my predecessors.
    2. Where blockchain should not be applied?
    I think that blockchain should not be applied in pleces it does not fit. I mean that if it can be use to improve some technology then I don't see any reasons to not do it.
    3. Which blockchain is best for with application?
    I'm sorry I do not know how to answer this question.
    4. What is your opinion about private vs public blockchain?
    There is just a small difference in private and public blockchain. The private one is not accessible for everyone and public is.

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  21. Thank you for an interesting article. Blockchain technology have very broad application (some of them are described in the article). There are situations where blockchain isn,t a good solution. Sometimes access (relatively easier) to hidden knowledge is very useful. In addition, the previous speakers have noted that the use of blockchain shouldn’t be the result of fashion. The third question is very general and can’t give the answer - in my opinion, each application has its own specification and it is hard to distinguish leader. A similar situation is with a choice between public or private - a lot depends on the specific features of the application. Each of them has its strengths and weaknesses ...

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