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Alterntive Ue for Blokhin –

Blockchain has a controversial reputation, linked as it is to cryptocurrency but Professor Peter McBurney of Kings College London thinks it’s an important an invention as the web itself.

This video was initially titled “Blockchain Benefits” to reflect Prof McBurney’s talk

https://www.facebook.com/computerphile

This video was filmed and edited by Sean Riley.

Computer Science at the University of Nottingham: https://bit.ly/nottscomputer

Computerphile is a sister project to Brady Haran’s Numberphile. More at http://www.bradyharan.com

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10 Responses
  1. T J

    There are ZERO actual uses for blockchain. Claiming its revolutionary is the height of stupidity. If it was needed for anything, it would have existed 30 years ago.

  2. what

    I’ve been watching Computerphile since I was a kid. I now have a math degree and a job in software engineering. But I will absolutely unsubscribe if this is the kind of content you’re gearing towards. Wildly disappointing, you’ve just lost a lot of credibility.

  3. Pesthuf

    It sounds nice to have a decentralized, tamper-proof database, but these features are *absolutely* not worth the price – the features blockchains have to give up in order to achieve it.
    Immutability sounds great – until a scam victim wants the fraudulent transactions undone. The people running the (totally decentralized, BTW!) blockchain will not decide to fork the database just to save the livelihood of a few innocent people.
    And thanks to the anonymity, the scammers have nothing to fear from law enforcement. That’s an upside?! No it’s not.

    I’ll probably get comments mentioning all the bullshit role/permission systems that have been proposed to solve these issues – but all the very, very successful scamming and rug-pulling that plagues every single attempted use for blockchain, constantly, make it obvious none of these “totally trivial to solve” problems have been solved.
    It just feels like a group of developers came together, thought they are smarter than everyone, that this world’s problems were all trivial to solve with their silver bullet, only to re-discover that all the complex systems the industries they are (claiming to be) trying to help have developed over decades have their reasons to be as complicated as they are.
    Also, isn’t it ironic how the solution to the issues of decentralization is… blessing a centralized, trusted group of people with extra permissions? It’s almost as if…

  4. Josh Ferguson

    I’m particularly confused why blockchain needs advances in access control more than any other form of information. Is it because blockchain necessitates that everyone be able to see the whole ledger or else the premise of decentralized trust falls apart? Sounds like blockchain just shouldn’t be used in instances where access control is complicated.

  5. generalmazur

    Interesting how we managed to bring up ‘oil companies’ multiple times throughout a 10-minute talk but never managed to touch on the insane energy requirements of validation that are the main bugbear with this ever becoming a functioning technology at scale. We’re supposed to be finding ways to avoid ecological catastrophe, not hurdling ourselves headfirst into the volcano.

  6. Europlots

    There are more than a few blockchain projects that actually focus on utility rather than the monetary speculation and the tamper-proofness aspect is absolutely essential if you want to build any decentralized system. Akash network for instance is one such project. It’s a marketplace for decentralized computing and the blockchain part is there only to support the two parties making an agreement.

  7. Justin Filip

    So tired of seeing people talk about “blockchain” with a 50% understanding, thinking they’re an expert. Bitcoin is the only implementation that works and is properly incentivised to work. There will never be another. Please learn why and then remake this video.

  8. Patrick Winter

    Up until now the main problem of every block chain idea is scale. You need a certain amount of users to get the tamper proofing, but the bigger the system gets the less effective it becomes. Its nice that Proff McB starts of claiming BC as one of two revolutionary inventions so that you instantly doubt anythingh he says.

  9. Tom Kelley

    I’ve done some RBAC work before, but I’m not sure that his “dynamic, delegatable, revocable access control” is possible with a distributed ledger. Isn’t the whole point of the ledger that, in order to verify the current state of the ledger, you must have the full ledger? And if an entity has the full ledger to verify, how is access to that ledger revoked? Access to FUTURE STATE may be revoked, but any access given on a node of the chain would be impossible to revoke.

    A lot of this stuff is solved by trusted third parties (like the French University example).

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