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Emin Gun Sirer

Emin Gun Sirer is an Associate Professor of Computer Science at Cornell, where his research focuses on operating systems and distributed systems.

Reviews by Emin Gun Sirer

All coin reviews by expert Emin Gun Sirer.

  • Emin Gun Sirer on Ethereum Associate Professor of Computer Science at Cornell

    I have often said that Ethereum is doing it right throughout the DAO fork, and Bitcoin devs, with their fetishistic dependence on "the longest chain," their inability to change ancient code, and their obvious conflicts of interest, are on weak ground.

    Full review πŸ”‘

    2017-12-18

  • Emin Gun Sirer on Stellar Associate Professor of Computer Science at Cornell

    Stellar seems designed for value transfer. It's not the architecture I'd use for data-intensive supply chain applications.

    Full review πŸ’©

    2018-07-30

  • Emin Gun Sirer on NEO Associate Professor of Computer Science at Cornell

    Hilarious. #6 cryptocurrency NEO is just a 7-node system uber the control of a single party, and the code isn't designed to handle even a single, benign failure.... Chances of NEO NOT being broken right now: 0%.

    Full review πŸ’©

    2018-03-04

  • Emin Gun Sirer on IOTA Associate Professor of Computer Science at Cornell

    IOTA has some promising ideas. Its community needs to learn to be better team players though.

    Full review πŸ’©

    2018-04-26

  • Emin Gun Sirer on Numerai Associate Professor of Computer Science at Cornell

    I've yet to see a clever application of AI and blockchains, save for Numerai.

    Full review πŸ”‘

    2018-04-18

  • Emin Gun Sirer on Verge Associate Professor of Computer Science at Cornell

    Total train wreck on Verge involving a 51% attack and a botched fork.

    Full review πŸ’©

    2018-04-05

  • Emin Gun Sirer on Cardano Associate Professor of Computer Science at Cornell

    Cardano is a particular consensus protocol, built around a PoS sybil control mechanism. It is not well-understood enough for people to trust it yet.

    Full review πŸ’©

    2018-07-12

  • Emin Gun Sirer on Basic Attention Token Associate Professor of Computer Science at Cornell

    A coin that gets created as a result of human time spent on browsing would be great. Worth taking a look at the Basic Attention Token, which requires browser support, but does essentially this.

    Full review πŸ”‘

    2018-02-24

  • Emin Gun Sirer on EOS Associate Professor of Computer Science at Cornell

    Say whatever you like, EOS achieves higher dramas per second than any other chain.

    Full review πŸ’©
    Show thread Emin Gun Sirer on EOS

    2018-07-08

  • Emin Gun Sirer on Dash Associate Professor of Computer Science at Cornell

    Dash is the re-branded dark? Darkcoin was cool. but still, would appreciate pointer to scalability tech.

    Full review πŸ”‘

    2015-10-15

  • Emin Gun Sirer on Zcash Associate Professor of Computer Science at Cornell

    There are some nutcases out there who are worried about Zcash's trusted setup ceremony, which involved six independent sources of randomness, of which only one had to be correct for the setup to succeed.

    Full review πŸ”‘

    2018-06-10

  • Emin Gun Sirer on Bitcoin Associate Professor of Computer Science at Cornell

    There is nothing about Bitcoin that makes it a good store of value. That line of narrative is incredibly dangerous. It has been used to sell Bitcoin to the masses who don’t understand where that value is going to come from.

    Full review πŸ’©

    2018-06-12

  • Emin Gun Sirer on Siacoin Associate Professor of Computer Science at Cornell

    Looks like Siacoin devs soft forked their coin to gain a competitive advantage over a miner manufacturer.

    This seems wrong from every perspective: it harms coin security and seems unethical.

    Full review πŸ’©

    2018-01-24

  • Emin Gun Sirer on Ethereum Classic Associate Professor of Computer Science at Cornell

    Ethereum Classic experienced a 51% attack, with very large reorgs. There are also rumors of double spends.

    A deep reorg is a rewrite of the blockchain, a rewriting of history. As such, it marks complete failure of immutability.

    Since immutability is ETC's main claim to fame, this is technically a catastrophic failure.

    Full review πŸ’©

    2019-01-07

  • Emin Gun Sirer on Bancor Associate Professor of Computer Science at Cornell

    Bancor can be gamed by miners, and, even if the miners are naive or benevolent, will always trail the real market. It provides no efficiency guarantee during this discovery process, and will likely waste its reserves on market price discovery. You should think twice before you layer a coin on top of Bancor.

    Full review πŸ’©

    2017-06-19

  • Emin Gun Sirer on Bitcoin SV Associate Professor of Computer Science at Cornell

    BSV conclusively showed that a single block can take more than 20 minutes to propagate. It also had a clear case of a miner mining two different blocks at the same height. They are the laughingstock of cryptocurrencies, a coin borne of fraud, social media images and endless bullshit.

    Full review πŸ’©

    2018-11-26

  • Emin Gun Sirer on Bitcoin Gold Associate Professor of Computer Science at Cornell

    PSA: Bitcoin Gold is a gimmick to create confusion around Bitcoin Cash. Beware of anyone peddling it.

    Full review πŸ’©

    2017-11-06

  • Emin Gun Sirer on XRP Associate Professor of Computer Science at Cornell

    Satoshi invented a whole family of consensus protocols, [while tthe XRP team] reused a [consensus] protocol so well known, it's called "classical." Satoshi was aware of [the liveness and safety] trade-off, [and] he actively rejected it because classical protocols are too fragile.

    Full review πŸ’©

    2020-01-03

  • Emin Gun Sirer on Telegram Open Network Associate Professor of Computer Science at Cornell

    There was never any reason or justification for Telegram to issue its own currency.

    Full review πŸ’©

    2019-10-11

  • Emin Gun Sirer on Monero Associate Professor of Computer Science at Cornell

    I've been a fan of Monero as well for some time. The turning point was a conversation with the leading expert on the topic, Sarah Meiklejohn, who convinced me that Monero's anonymity may be comparable to Zcash in practice.

    Full review πŸ”‘

    2019-11-19

  • Emin Gun Sirer on Bitcoin Cash Associate Professor of Computer Science at Cornell

    BCH plans to divert 12.5% of its new block rewards (specifically, coinbase) to funding its developers. Further, the miners will orphan blocks that do not comply with this plan.....There are three unpalatable aspects to this proposal.

    First, it's coercive on miners. Practically, the orphaning is a way to force Calvin Ayre to pay. There isn't a single person who cares about Calvin, probably not even his mother, assuming she's alive and has seen his pictures from the Caribbean.

    The orphaning will not practically impact any other miners' decisions about which chain to mine on. They will follow their income, and we already discussed how the plan cleverly shifts costs to BTC as long as there's a price/hashrate difference between the tokens.

    The second, and substantive, problem is the way the proposal came out of nowhere. Springing such a proposal, with orphaning built in, on a community with no prior discussion was terrible PR and community management.....

    Third and final problem is that there are many underspecified aspects to the proposal. Specifically, who will manage the collected funds and how will they be distributed? This is exactly when some much needed community discussion would have been useful.

    Full review πŸ’©
    Show thread Emin Gun Sirer on Bitcoin Cash

    2020-01-23

  • Emin Gun Sirer on Grin Associate Professor of Computer Science at Cornell

    With [this] discovery, Grin and Beam are no longer privacy coins. They also have other drawbacks (e g. need to be online to receive payments, high inflation) compared to nonprivacy coins like Bitcoin.

    Always demand proofs of correctness from systems you plan to use. Be wary of k-anonymity systems, where k is picked by the system. Always ask multiple experts about new protocols; do not follow social media hype.

    Full review πŸ’©

    2019-11-18

  • Emin Gun Sirer on Beam Associate Professor of Computer Science at Cornell

    With [this] discovery, Grin and Beam are no longer privacy coins. They also have other drawbacks (e g. need to be online to receive payments, high inflation) compared to nonprivacy coins like Bitcoin.

    Always demand proofs of correctness from systems you plan to use. Be wary of k-anonymity systems, where k is picked by the system. Always ask multiple experts about new protocols; do not follow social media hype.

    Full review πŸ’©

    2019-11-18

  • Emin Gun Sirer on Steem Associate Professor of Computer Science at Cornell

    I tried making sense of the Steem papers multiple times, and failed each time. So I don't know. Perhaps someone else with a better grasp of that system can help.

    Full review πŸ’©

    2019-11-28