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Bitcoin Gold 51% attack highlights the weaknesses of proof-of-work
The 51 percent attack Bitcoin Gold experienced last week sparked an industry-wide debate about the security of the network. Many saw this as proof of BTG’s redundancy, but few focused on the problems in proof-of-work itself that enable these kinds of attacks to happen in the first place. дальше »
2020-1-27 21:06 | |
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40% Of Hedera Hashgraph Council Nodes Drops Offline, HBAR Price Down 54% In Last 30 Days
The closing of 4 nodes out of a total of 10 allows Sybill attacks to happen in an open network. Hedera Hashgraph is known to run public nodes, yet the Council Nodes are the ones that decide resources and software updates for the network. дальше »
2020-1-1 20:37 | |
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Hard Problems in Cryptocurrency: Five Years Later
Special thanks to Justin Drake and Jinglan Wang for feedback In 2014, I made a post and a presentation with a list of hard problems in math, computer science and economics that I thought were important for the cryptocurrency space (as I then called it) to be able to reach maturity. дальше »
2019-11-25 04:03 | |
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Sidechains vs Plasma vs Sharding
Special thanks to Jinglan Wang for review and feedback One question that often comes up is: how exactly is sharding different from sidechains or Plasma? All three architectures seem to involve a hub-and-spoke architecture with a central “main chain” that serves as the consensus backbone of the system, and a set of “child” chains containing actual user-level transactions. дальше »
2019-6-14 04:03 | |
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Despite Attacks of All Shapes and Sizes From All Sides, Bitcoin (BTC) Is Very Much Alive And Kicking
It looks like Bitcoin will continue to defy all odds for a long time. Despite the constant attacks of its critics, which often call it a scam or worse, the crypto world is more bullish than ever now. дальше »
2019-5-11 03:17 | |
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Op Ed: Why Bitcoin’s “Toxic” Maximalism Makes Sense
Over the years, Bitcoin has gained a reputation for having a “toxic” community of users around it. This accusation is mostly thrown at Bitcoin by proponents of altcoins and those who have supported various Bitcoin hard fork attempts in the past. дальше »
2019-4-5 16:23 | |
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Op Ed: Bitcoin Is a Declaration of Our Monetary Independence
Nick Spanos is an early adopter and innovator in the blockchain space. He is best known for launching Bitcoin Center NYC, the world’s first live cryptocurrency exchange, in 2013, right next to the New York Stock Exchange — as immortalized in the Netflix documentary “Banking on Bitcoin. дальше »
2018-12-15 21:43 | |
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Explained: 51 Percent Attacks on Bitcoin and Other Cryptocurrencies
One of the worst things to happen to a proof-of-work cryptocurrency is a 51 percent attack. Such attacks undermine the immutability—and consequently the trust—in a blockchain. Satoshi Nakamoto summarized proof-of-work as “one-CPU-one-vote. дальше »
2018-12-10 13:20 | |
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DASH Cryptocurrency Payment Network to Apply ‘ChainLocks’ to Eliminate 51% Blockchain Attacks
The Dash, which is a payment network will soon be introducing a unique new network upgrade, one that will be able to eliminate the threat of having about 51% attacks that happen on the protocol. With the ChainLocks platform, it is able to enable the transactions to be easily secured and confirmed once the block […] дальше »
2018-12-3 22:03 | |
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