Electricity is 90 percent of the cost to mine bitcoin. As such, bitcoin mining uses an exorbitant amount of power: somewhere between an estimated 30 terrawatt hours alone in 2017 alone. That’s as much electricity as it takes to power the entire nation of Ireland in one year. Indeed, this is a lot, but not exorbitant. Banking consumes an estimated 100 terrawatts of power annually. If bitcoin technology were to mature by more than 100 times its current market size, it would still equal only 2 percent of all energy consumption.- Bitcoin Obituaries Archives | 99 Bitcoins
A great list of bitcoin obituaries. One of my favourite is from 2013, one BTC=$2.13 and Krugman explained why it has failed. <3- Square Expands Cash App Bitcoin Service to All 50 US States - CoinDesk
Mobile payments firm Square now lets customers buy and sell bitcoins via its Cash App in all 50 U.S. states.- Menlo Park High-End Jewelry Store First In World To Accept Cryptocurrency – CBS San Francisco
Jared Silver says 20 percent of his sales are paid via cryptocurrency, namely Bitcoin. Wire transfers account for about 50 percent of the company’s transactions and it pays 3½ percent every time he accepts a credit card payment. “For me, it’s about a third the cost of credit cards,” says Jared. “It’s faster closing time than wire transfer or credit card and it’s much easier on my customers.” Stephen Silver’s sales in cryptocurrency over the last 8 months have been strong, totaling over 8 figures.”- How to push Bitcoin transactions via SMS · Pavol Rusnak
Blockstream announced today their Satellite project. I was thinking about exactly that for quite long time, ever since this DVB-T broadcast experiment in 2014. There are lot of sceptics, but I am very excited about this development. One of the recurring questions I saw was this one: What about the other direction (from user to Bitcoin node)?- Will Lightning Network Make Privacy Coins and Pure Currency Coins Obsolete? - 2018-01-24-rusty-russell-future-bitcoin-tech-directions
Future technological directions in bitcoin: An unreliable guide- I am a time-traveler from the future, here to beg you to stop what you are doing. - Bitcoin
I am sending this message from the year 2025. Things are looking bleak here, and some of you will carry blood on your hands. If you don't believe me, please move on, as I have no way of proving to you I'm really who I claim to be.- Nexmo - APIs for SMS, Voice and Phone Verifications
How to push Bitcoin transactions via SMS · Pavol Rusnak- Blockstream - Announcing Blockstream Satellite
Blockstream Satellite is the world’s first service that broadcasts real-time Bitcoin transactions and blocks from a group of satellites in space. With the service, everyone will have free access to the Bitcoin network, in any corner of the world, including the estimated four billion people not currently connected to the Internet, due to lack of availability or affordability.- An Open Letter to Bitcoin Miners – Keeping Stock
"I’m concerned. I believe we urgently need to find a scaling solution, and I believe the best solution is to increase the blocksize."- A Bitcoin or Ethereum Breakthrough? European Union Bids to Enter the Blockchain Race - CryptoCoinsNews
A great domain for hints, tips, courses, information about Bitcoin. And probably the last second-level btc.something domain.
ETH.cards. I'm not sure how this will be used, but I know someone will find it interesting. Maybe for ethereum-based credit cards? Or for a project that has a "card" contract on the Ethereum blockchain? → Buy it, or make an offer.