The curse of immutability, and sour pickles

The curse of immutability, and sour pickles

Until recently I had thought of immutability as a Good Thing, in the context of blockchains. It is, after all, one of the most desirable attributes that prevents double spend and enables consensus. The security of the blockchain depends on it. As my learnings went from Bitcoin to Blockchains to Distributed Ledgers, I made a faulty extrapolation. I did not […]

The Blockchain vs the ISP

The Blockchain vs the ISP

Headlines: Hijacking Bitcoin: Routing Attacks on Cryptocurrencies for fun and profit, by evil ISPs!  The bitcoin protocol does not seems to protect the network against routing attacks, which is created by concentration of hosts: 60 percent of Bitcoin traffic is visible to just three ISPs (as of mid-2017). As the bitcoin blockchain proof of work selects the sub-chains with the hardest […]

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