Crypto’s Biggest ICOs Stay Silent on SEC Subpoenas

The silence is deafening. After rumors began to fly late last week that the SEC has been sending out subpoenas to initial coin offerings (ICOs), some of the biggest projects to yet utilize the funding mechanism have remained tight-lipped, refraining from public commentary. CoinDesk has so far reached out to the 14 best-known issuers that […]

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Blockchain’s Once-Feared 51% Attack Is Now Becoming Regular

Monacoin, bitcoin gold, zencash, verge and now, litecoin cash. At least five cryptocurrencies have recently been hit with an attack that used to be more theoretical than actual, all in the last month. In each case, attackers have been able to amass enough computing power to compromise these smaller networks, rearrange their transactions and abscond […]

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A Strange High: Two Days at Denver’s Crypto-Cannabis Conference

Hungover. Trying to motivate myself to drive from Colorado Springs to Denver for the second annual Crypto-Cannabis conference. It’s 1 pm. Chris Derose messages me: “This conference is weird!” “How so?” “Well, there’s a lot of bitcoin pumping, with newbs. And this porn star is getting trashed. Shitfaced.” “I should be there. I’m headed up.” […]

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A Long-Secret Bitcoin Key Is About to Be Revealed

A long-held bitcoin secret is about to be revealed. No, it’s not the identity of Satoshi Nakamoto, it’s a private key the cryptocurrency’s creator entrusted to several bitcoin developers that activates the protocol’s so-called “alert system,” once used to flash a text warning to those running the software in case something happened that could impact […]

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New Altcoin Promotes Fitness with ‘Proof of Sweat’

Mining bitcoins chews up a lot of computing power for no other purpose than to sustain the network. Wouldn’t it be useful to mine cryptocurrency in some other, more productive way? Now a team of Serbian developers has tried to crack the problem with a proof-of-concept altcoin that lets you mine coins simply by exercising. Mangocoinz was launched […]

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The 12 Best Answers from Gavin Andresen’s Reddit AMA

Bitcoin Core developer Gavin Andresen took to Reddit today to engage the community in an ask-me-anything (AMA) session that tackled a variety of topics both silly and serious. In his post kicking off the session, the 47-year-old chief scientist at the Bitcoin Foundation detailed his contributions to the bitcoin space so far. These included the nine Bitcoin […]

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MakerDAO and More: The Quest for a Stable Stablecoin Continues

Update (09.20 UTC, Jan. 24): This article has been updated with a response from Tether representatives. Usually, no one bats an eye when a cryptocurrency’s price drops 30 percent over the course of a week. This is the Wild West, after all. But when it happened to DAI this month, heads turned, primarily because the token […]

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Airdrops Are a Marketing Ploy (And That’s OK)

Michael J. Casey is the chairman of CoinDesk’s advisory board and a senior advisor for blockchain research at MIT’s Digital Currency Initiative. The following article originally appeared in CoinDesk Weekly, a custom-curated newsletter delivered every Sunday exclusively to our subscribers. In February 2014, when growing interest in bitcoin spawned the first wave of “altcoins,” the […]

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How Bitcoin’s Lightning Can Be Used for Private Messaging

Bitcoin’s lightning network might have a use case beyond faster and more scalable payments. Last week Lightning Labs developer Joost Jager revealed an experimental, new proof of concept: Whatsat, a version of lightning that can be used to send private messages. Like bitcoin, it’s censorship-resistant. But, unlike encrypted apps that morph messages into unreadable, garbled […]

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