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How about a bitcoin coinstar? Seems like a great idea to me. You put coins in there, converts it to Bitcoins.
Great idea! Coinstar machines will start selling Bitcoin at the grocery store- https://techcrunch.com/2019/01/17/bitcoin-coinstar-coinmeSorry to necrothread, but whatever. Lesson here, eventually nearly all financial services will be impacted by Bitcoin. |
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Well from the looks of things I doubt they'll do it any time soon with all these exchanges getting shut down.
Maybe not soon, but eventually. Sorry to necrothread, but whatever. Coinstar machines will start selling Bitcoin at the grocery store - https://techcrunch.com/2019/01/17/bitcoin-coinstar-coinmeLesson here, eventually nearly all financial services will be impacted by Bitcoin. |
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Five years later, no block explorers still show Macbook-air's original transaction that had gotten double-spent after the block reorg. Here's a list of seven transactions that (allegedly) had been confirmed on the v0.8 side of the fork, but were later double spent on the v0.7 side of the fork. 12814b8ad57ce5654ba69eb26a52ddae1bff42093ca20cef3ad96fe7fd85d195 cb36ba33b3ecd4d3177d786209670c9e6cdf95eb62be54986f0b49ca292714af 7192807f952b252081d0db0aa7575c4695b945820adaf7776b7189e6b3d86f96 355d4ea51c3b780cf0b10e8099a06a31484e0060bc140b63f3d6e5fb713ace5e b961bc0c663a46893afd3166a604e7e2639533522d9fec61fdb95eb665e86f5a 138063e4bdb76feaa511f1e7f9c681eb468ef9140c141671741c965e503b84c6 a10bd194cdbf9aa4c12eb0b120056998a081a9b0d93d70570edff24dec831f90 Source: https://pastebin.com/raw/wctJU3Ln |
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One of the main reasons someone does a transaction face-to-face, using cash, is to protect financial privacy.
Recently. LocalBitcoins began requiring account verification (referred to as KYC / identity verification) for all sellers.
Two alternatives, HodlHodl.com and Bisq.Network, are now functional, are useful for face-to-face trading, and do not require identity verification.
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What exactly you mean by LOCAL TRANSACTION as cryptocurrency transaction are not confined to any area?
Local transactions is a term generally meaning in-person, face-to-face trading. While there's no reason cash (e.g., USD) needs to be the payment method for a local trade, most local trades are for cash. This thread is to help those minimize the risks when entering and conducting such a trade. |
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Here is more information about the technology and company: - https://docs.wixstatic.com/ugd/b454a1_c0652f38a20c438eb9ab474bab1878ba.pdf3B’s novel Unipolar Logic Circuit (ULC) - advantages: - Enables NMOS or PMOS logic as low as 50% of CMOS power consumption - Enables simpler fabrication of circuits – only NMOS or PMOS transistors, thereby reducing fabrication cost - Reduces transistor count compared to conventional CMOS logic, thereby increasing operational speed and reducing power consumption and fabrication cost of logic circuitry - Enables higher clock speeds compared to conventional CMOS logic or other unipolar logic schemes - High density < 20F2 novel vertical unipolar logic gates - Circuit validated via simulation on IBM 500nm and 90nm CMOS process nodes |
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The other threat to your safety while performing a local trade: United States Department of Homeland Security"On Friday Feb 9, I was arrested in my home by Department Of Homeland Security over a #Bitcoin transaction from nov 2016 and am released under a personal recognizance bond. I am being charged with: 18 USC 1956 - Money Laundering Instrument" https://twitter.com/NODEfather/status/963860385336999936They also confiscated his devices in which he holds cryptocurrency funds. As-of Feb 22nd, Morgan Rockcoons (aka, Morgan Rockwell, and on Twitter: @NODEfather, and @Metaballo) plead not guilty and got a 10 day extension to get legal representation. - https://twitter.com/NODEfather/status/966852090839486465 |
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Sorry to append to such an old post, but this is relevant: On Bitcoin as a public randomness source by Joseph Bonneau, Jeremy Clark, and Steven Goldfeder - https://eprint.iacr.org/2015/1015.pdf |
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Video with more on the technology and background on the team: - https://www.youtube.com/watch?v=C75VvJ980Ko&t=746Transcript: Tom: "I just want to share a little bit of the excitement we have around using Unipolar technology to solve in Bitcoin minng." "We started work on Unipolar to see if we could come up with a way of using just N-Channel transistors instead of both N-Channel and P-Channel as normally what is used in CMOS." "So I came up with a circuit. We started simulating that circuit in SPICE with a variety of technologies. We wanted to see if we could generate the benefits of using just one kind of transistor. After we simulated it we made several observations about our results. The first was that fewer transistors were required, particularly for complex gates. So that meant that the area could be reduced a little bit because we don't need such a large area when there are fewer transisters. Then we noticed with a smaller area the metal line links would be reduced. Now metal lines are currently, in state-of-the-art technologies, the biggest factor for delay. And [a smaller area] can speed things up quite a bit. Further it reduces the amount of power because each line is shorter and needs less charge to charge it up or to discharge." "So there's a reduced load on each signal. We noticed that with transistors you don't have to go to both the P and N transisters you can go with just one type of transistor, the N-Channel. So that cuts the load in half. So that's a very significant reduced loading on every signal. We continued doing simulations and found that there was a reduced voltage swing retired. With CMOS you have to go rail-to-rail. With Unipolar you have to go over the threshold a little bit and back under the threshold a little bit. So all you need is a design margin around the thresholdd. Further we noticed, when we started putting this together in a whole system, that the clock frequency, for an apples-to-apples comparison of the circuits, can be increased by at least 10X." "Then we looked at how much power, if you roll all these factors together, how much power we can have. One other thing we noticed is that a lot of the circuitry can be eliminted. We don't need all of the gates you would ordinarily need for CMOS and circuitry. We can get by with about 70% less. So we only need about 30% of the circuitry. So with 30% of the circuitry, reduced metal lines, reduced loading -- we come up, generally speaking, expecting 20% of the power that would typically be required for Bitcoin Mining. Now in Bitcoin Mining one of the biggest issues is how much power it takes to do any given hash and this is going to cut that power by over 80%." Erik: "We are currently planning to build the world's largest Bitcoin mining facility in Norway. This is a 150 megawatt facility, which is an enormous amount of energy. The electricity is already installed in the building, ready to plug in our miners once they are operational. Since our miners are 80% more power efficieant, it means that in our single facility we will be mining Bitcoins equivalent to a 750 megawatt facility, which gives us a tremendous competitive advantage just in energy savings." "This is why we can offer you a token with the hash power that we are offering at such a low price, with no strings attached. This is what you pay, no maintenance fees, and no extra or hidden costs." Post on /r/BitcoinMining: - https://www.reddit.com/r/BitcoinMining/comments/7idxqc |
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3B Technologies (St. Louis Park, Minnesota, US) is a team building ASICs using their patented technology that allows hashing to occur with less electrical consumption. Their first ASIC will be SHA-256 (for Cryptotech), with plans to enter X-11, Scrypt and perhaps other mining algos at a later time. Cryptotech’s novel unipolar logic only utilizes one type of transistor – either NMOS or PMOS only.
In the case of silicon circuits, NMOS only is chosen for its much higher mobility compared to PMOS.
Manufacturing costs are lower since the fabrication is simplified (no need for doping of PMOS transistors).
- Technology: http://www.cryptotech.no/elements/pages/our-stores/- Team: http://www.cryptotech.no/elements/pages/about/ |
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