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NickSzabo4's profile
Nick Szabo 🔑
Nick Szabo 🔑
Nick Szabo  🔑
@NickSzabo4

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Nick Szabo  🔑

@NickSzabo4

Blockchain, cryptocurrency, and smart contracts pioneer. (RT/Fav/Follow does not imply endorsement). Blog: http://unenumerated.blogspot.com 

Joined June 2014

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    1. Adam Back‏ @adam3us 17 Mar 2017
      • Report Tweet
      Replying to @adam3us

      .@el33th4xor also you are co-author of a paper suggesting some problems starting around 4MB.

      3 replies 2 retweets 14 likes
    2. Aviv Zohar‏ @Avivz78 17 Mar 2017
      • Report Tweet
      Replying to @adam3us @el33th4xor

      Is that 4MB figure still alive? @socrates1024 Plenty of evidence that double block size will hurt very little.

      1 reply 0 retweets 1 like
    3. Adam Back‏ @adam3us 18 Mar 2017
      • Report Tweet
      Replying to @Avivz78

      .@Avivz78 @el33th4xor multiple factors, compact blocks asymptotically saves 50% bandwidth in blocksonly node https://bitcointalk.org/index.php?topic=1377345.0 …

      1 reply 0 retweets 1 like
    4. Adam Back‏ @adam3us 18 Mar 2017
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      Replying to @adam3us

      .@Avivz78 @el33th4xor 88% bandwidth reduction https://bitcointalk.org/index.php?topic=1377345.0 … from blocksonly mode, compact-blocks saves around 6% in tx relay mode?

      1 reply 0 retweets 1 like
    5. Adam Back‏ @adam3us 18 Mar 2017
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      Replying to @adam3us

      .@Avivz78 orphan risk: SPY mining at around 60% hashrate, and they have no self-orphan risk. but compact blocks is not adversarially secure.

      1 reply 0 retweets 3 likes
    6. Adam Back‏ @adam3us 18 Mar 2017
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      Replying to @adam3us

      .@Avivz78 FIBRE reduces latency via multi-source FEC & UDP, but like compact-blocks under it, is also not adversarially secure.

      1 reply 0 retweets 3 likes
    7. Adam Back‏ @adam3us 18 Mar 2017
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      Replying to @adam3us

      .@Avivz78 block proposal pre-distribution (eg weak block & similar) maybe adversarially secure, but probably only up to selfish mining limit

      1 reply 0 retweets 3 likes
    8. Adam Back‏ @adam3us 18 Mar 2017
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      Replying to @adam3us

      .@Avivz78 tho it appears mining centralisation is far above selfish mining limits. committed transactions may amplify censorship resistance.

      5 replies 0 retweets 3 likes
    9. Aviv Zohar‏ @Avivz78 18 Mar 2017
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      Replying to @adam3us

      2MB blocks were sufficiently secure in old P2P network of 2012 and mining centralization would hardly be affected.

      2 replies 0 retweets 0 likes
    10. Christian Decker‏ @Snyke 18 Mar 2017
      • Report Tweet
      Replying to @Avivz78

      blocksize vs centralization is a trade-off, it's not a threshold after which bad things happen. Deciding the value is politics

      3 replies 0 retweets 2 likes
      Nick Szabo  🔑‏ @NickSzabo4 18 Mar 2017
      • Report Tweet
      Replying to @Snyke @Avivz78

      Block size does have threshold after which extremely bad things can happen. But we don't know where that threshold is.

      2:17 PM - 18 Mar 2017
      • 16 Retweets
      • 30 Likes
      • 😷 😷 😷 Emilien Dutang Jannes⚡ Daniel Benarroch Thεο "bonded courier" Whis Henry Brade ⚡ Lawrence Nahum smaugTheMagicDragon
      3 replies 16 retweets 30 likes
        1. New conversation
        1. Aviv Zohar‏ @Avivz78 18 Mar 2017
          • Report Tweet
          Replying to @NickSzabo4 @Snyke

          We have good ways of deriving bounds from data. Did some of that in Ghost paper.

          3 replies 0 retweets 0 likes
        2. Nick Szabo  🔑‏ @NickSzabo4 18 Mar 2017
          • Report Tweet
          Replying to @Avivz78

          BTW your work is the best analysis I've seen, thank you! But it's still not enough to satisfactorily characterize these risks.

          2 replies 2 retweets 9 likes
        3. CoinSalad  💰 🥗‏ @coinsalad 19 Mar 2017
          • Report Tweet
          Replying to @NickSzabo4 @Avivz78

          Hi, can either of you link me to this research? Thanks in advance!

          2 replies 0 retweets 1 like
        4. Nick Szabo  🔑‏ @NickSzabo4 19 Mar 2017
          • Report Tweet
          Replying to @coinsalad @Avivz78

          https://arxiv.org/pdf/1605.07524.pdf …

          1 reply 1 retweet 2 likes
        5. CoinSalad  💰 🥗‏ @coinsalad 19 Mar 2017
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          Replying to @NickSzabo4 @Avivz78

          thanks!

          0 replies 1 retweet 1 like
          6. End of conversation
        1. Christian Decker‏ @Snyke 18 Mar 2017
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          Replying to @NickSzabo4 @Avivz78

          right, but the trade-off kicks in a lot earlier.

          0 replies 0 retweets 3 likes
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        1. Dan Plante‏ @Daniel_Plante 18 Mar 2017
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          Replying to @NickSzabo4 @Hermetec and

          I do. I met that point a year ago. Talk to users.

          0 replies 0 retweets 0 likes
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