What can you buy with bitcoin? 9 ways to spend your ...

Coinmap kinda sucks on mobile. What's the next best list for local bitcoin acceptors?

submitted by pinhead26 to Bitcoin [link] [comments]

JuiceDB - Labor Day Sales - Bitcoin


Now that that is out of the way…

Labor Day Sales

4th of July Wump and I added over 100 coupon codes from all over (not just Reddit). With V2 up now anyone can add them and we just have to approve them. We’ll be adding them as usual but feel free to add what ones you see that we don’t have listed. Vendors feel free to add your sales as well!
All sales will be posted on our deals page which you can view the most recently submitted ones to make sure your submission is not already listed (hopefully before you submit it). We already have about 20 posted.
If you favorite a juice or vendor on your account, there is a favorites tab on the deals page which lists coupons only from your favorites.


You asked, we finally got around to listening. The sort feature itself is still being worked on but here is a super secret link to view all the vendors we currently know of that accept Bitcoin! We updated, and added, vendors from that Bitcoin list that floats around so now you can easily find those rare Bitcoin acceptors.
As always show your vendors some love and leave reviews on JuiceDB. It not only helps the vendor but helps everyone in the community who uses the site.
Peace, ECR Love, and no dry hits.
submitted by sc0lm00 to electronic_cigarette [link] [comments]

Self Posting. The Rise And Rise Of Bitcoin ;) Many sites that use Bitcoin are in the world’s Top 100 Alexa list

Many sites that use Bitcoin are in the world’s Top 100 Alexa list (according to Alexa ranking):
1. Google, which actively tracks Bitcoin USD price at the top of the page when you search Bitcoin. 4. Yahoo, which tracks Bitcoin USD price in their Yahoo Finance section. 7. Wikipedia, which has accepted Bitcoin donations last summer. 19. eBay, which is using PayPal to test Bitcoin applications before they join in the future 32. Reddit is not only a merchant that accepts Bitcoin but has one of the most active Bitcoin forums online. 34. WordPress, which has been one of the longest merchant partners of Bitcoin since November of 2012. Plus, now they have many plug-ins to help member WordPress sites accept Bitcoin as well. 39. PayPal has recently accepted Bitcoin as we covered last fall. 48. Microsoft, the largest company ever to accept Bitcoin, was brought into the fold last month to close 2014. This makes seven of the top 50 websites worldwide as Bitcoin acceptors or partners in principle. (eBay is not counted among them.) 64. xHamster is the second largest porn website after XVideos based on online traffic volume, and has accepted Bitcoin since last summer. 76. ESPN integrates Bitcoin not through payments, but as a major sponsor with a three-year college football bowl endorsement deal. “Bitcoin Bowl” winning teams can accept their winning prize share in Bitcoins. 99. Wikia.com, which is a derivative of Wikipedia-Wikimedia, making the running total ten out of the Top 100 worldwide websites. 
This does not include the fifteen Google non-English derivatives that also populate the Top 100 websites worldwide, which would make twenty-five active Bitcoin participants in the Top 100. In the United Sates alone, Bitcoin has working partnerships with five of the Top 20 websites (Google, Wikipedia, Reddit, ESPN, PayPal).
Source: Internet! ;D
To the moon!!! ┗(°0°)┛ ..○
submitted by bit_moon to Bitcoin [link] [comments]

Open Bitcoin ATM – The worlds first completely open-source Bitcoin ATM for Education and Experimentation. Parts: ~$165 (Bill Acceptor, Thermal Printer, Arduino, Lucite Box, Aluminum, Components)

Open Bitcoin ATM – The worlds first completely open-source Bitcoin ATM for Education and Experimentation. Parts: ~$165 (Bill Acceptor, Thermal Printer, Arduino, Lucite Box, Aluminum, Components) submitted by kkoolook to Bitcoin [link] [comments]

Dell becomes world's largest ecommerce acceptor of Bitcoin

Dell becomes world's largest ecommerce acceptor of Bitcoin submitted by ashish2701 to Bitcoin [link] [comments]

Bitcoin ATM Grand Concourse, Bronx, NY, Bulk Note Acceptor and Lowest Fees in Bronx

A new bulk note Bitcoin ATM has been setup at Bronx's Premier Barber and Stylist shop, P. International in at 106 E 167th Street. 167th St & Walton. 10 AM - 10 (11) PM.
Lowest Fee in the Bronx. Worth the trip. Load thousands in a seconds not half-hours.
Directions by Train: B, D, 4 (167th stop). Directions by Bus: The Bx35 (River or Grand Concourse) and Bx1/2 and Bx1 (167th Grand Concourse).
submitted by PurposeOverProfit to Bitcoin [link] [comments]

ATM using a Raspberry PI Zero

ATM using a Raspberry PI Zero

Be your own Bank
We built this (work in progress) Lightning ATM using a Raspberry Pi Zero WH to convert paper currency (like Euros', USD, etc), in our case Vietnam Dong (VND) to Bitcoin.
The original plans for the ATM came from https://github.com/21isenough/LightningATM which called for a coin acceptor, except we upgraded from the plan to accept local currency notes.We used the Wallet of Satoshi as the receiving wallet in the clip (it actually works with any lnurl enabled Lightning wallet) and the ATM is funded via an lntxbot wallet which is live on Telegram.
Converting 'paper money' to Bitcoin using Raspberry Pi Lightning ATM
submitted by FutureTravel to raspberry_pi [link] [comments]

Bitcoin machine stolen in the Netherlands: 'It's a virtual coin, what an idiot'.

Bitcoin machine stolen in the Netherlands: 'It's a virtual coin, what an idiot'. submitted by FranklyReader to Bitcoin [link] [comments]

Bootstrap Idea: Coin-Op On Ramps

Hi all, long-time lurker.
I've been mulling over how to make the on ramp (getting people their first NANO) experience easier. We need to break the perception caused by bitcoin that crypto is Expensive, Slow, Technical, and Risky. I have a loose idea along those lines I'd like input on: Coin-Operated NANO Kiosks
These machines would be a small, simple device that could fit on a counter. They would have a coin acceptor, a small screen, and a camera for scanning QR codes.
They would accept low-denomination fiat coins (such as pennies and nickels in the US), and immediately send the equivalent amount to a valid NANO address the user enters by scanning a QR code (such as the one Natrium provides when hitting the "Recieve" button). This device would also provide a guided tour on how to get a mobile wallet app, making on-boarding easy.
This would help break several myths about NANO in one interaction:
Expensive: It's just a couple cents, what's the harm?
Slow: The transactions came through in literal seconds
Technical: Just download an app and scan a code
Risky: No personal information, no big transactions, no big time sink
There's other cool ways these kiosks could be extended, but this is the core concept: Insert physical coins, receive NANO.
EDIT: Cano pointed out this has been aleady been proposed and prototyped at the Nano UK Meetup. Oops, but also exciting!
submitted by EchelonOverride to nanocurrency [link] [comments]

PSA: Our Skyhook ATM in San Diego didn't catch a bogus $100 bill

We were hit yesterday and we have since shut down the machines. If you know of anyone else operating a Skyhook please pass this message on. I've notified Jon at Project Skyhook and will update this post as I get more information.
Steven Michaels http://BitcoinMerchant.com
UPDATE 1-18-15: Pyramid Acceptors reached out to me and provide a firmware update which is now working correctly. Our machines will be back up this week. I recommend all Skyhook operators visit their site and download the firmware update.
Also, Jon at Project Skyhook did respond to my last email.
submitted by TraderSteve to Bitcoin [link] [comments]

Hodl Hodl launches new project called "Predictions" on TESTNET

From the related blog post (https://medium.com/@hodlhodl/predictions-by-hodl-hodl-available-on-testnet-83f8ff97a98d):
Today we’re officially announcing our project “Predictions by Hodl Hodl” which is now available on TESTNET — predictions.cc.
In this blog post we want to give instructions, explain how everything works, and give you some use-cases for our new project.
Let’s get everything in order.
Predictions is a project by Hodl Hodl that is a marketplace where you can go and create a contract with someone else, where the conditions of the payout depend on the outcome of a certain event. The payouts are only made in Bitcoin.
Let’s say you want to predict that the price of Bitcoin will be above $15,000 by July 2019. The other party may disagree with you. The condition of the contract states that each one of you locks 1 Bitcoin into escrow and whoever turns out to be correct in the prediction of the price of Bitcoin gets 2 bitcoins in July.
We provide you with a solution to make this possible:
An offer desk
Simply put, it’s a place where you can find other users’ predictions and create your own;
Escrow solution
For each contract we generate two multisig addresses, where the funds are being stored safely during the prediction contract, with two out of three keys needed for release.
Resolving disputes
In case of a disagreement between the two parties on the prediction contract’s outcome, Hodl Hodl intervenes and resolves the dispute.
Use cases
The use case described above is the simplest one. Here are just a few more examples from an infinite number of options:
Stock prices
You can buy public company shares, and try predicting the price of that stock. Choose any public company, e.g. Google, and predict the price of its shares by, for example, the end of 2019.
Oil price
If you’re long on renewable energy, you would probably expect the price of oil to fall at some point — predict when exactly.
Payouts to creditors of MtGox
If you’re a MtGox creditor (a Bitcoin exchange that was hacked and went bankrupt back in 2014) and awaiting the payout, you might be interested in creating a contract that says “creditors of MtGox will not be paid anything in 2019” even though your expectation is that they will be. Thus, if you get paid by MtGox, you receive bitcoins from them, but lose the ones you locked in your contract. If you don’t get paid by MtGox, you’d get some of the bitcoins that will be sort of a compensation for a longer wait period.
The outcome of the Champions League final
You can make the final more exciting by creating a prediction of who gets to be the Champions League winner in 2019.
Peter McCormack VS Craig Wright
If you follow these kinds of events and want to support either side, make a prediction of who wins the trial, or whether it goes to trial at all.
Offer creation
To make a prediction offer, simply press the “Add offer” button on the front page of the website, or on “My offers” page.
When creating offers, you have to describe the event, the outcome you predict, how many bitcoins you would like to lock in escrow and how much your counterparty should lock in escrow.
We made the process as simple as possible, and creating offers won’t take much of your time.
Please note:
Every offer is pre-moderated by Hodl Hodl admins Your offer should not describe anything illegal You should be as specific and unambiguous as possible when describing the event outcome
Contract workflow
When you create an offer and someone accepts it, or you accept an existing offer, a contract is created.
Let’s analyze this step by step.
1) Contract is created;
Right after the contract is created, Hodl Hodl generates two unique escrow addresses.
It’s worth mentioning:
We support native Bech32 SegWit addresses. This means you can send and receive the funds from escrow to Bech32 addresses when the contract is completed
We generate P2SH-P2WSH SegWit multisig escrow addresses. For every contract we generate multisig addresses in SegWit format.
2) Both parties make deposits;
Both offeror and acceptor make deposits to the escrow addresses we present them with, sending funds from their own Bitcoin wallets.
3) Waiting for the event to take place;
When both counterparties have sent bitcoins to the escrow addresses and transactions are confirmed, we inform users that everything is alright, and we’re waiting for the event to take place.
4) Acknowledging the contract outcome;
Once the event has happened, we ask both parties to decide who was right and who was wrong regarding the prediction made.
Both parties are given 3 days to acknowledge this. If there’s a disagreement between them or one party doesn’t make the decision as to the outcome of the contract within 3 days, a dispute is started.
It’s also possible for both parties to declare a draw — in this case, both parties are able to refund the funds they’ve previously locked in escrow.
5) Prediction contract is now complete!
If the parties agreed on the contract outcome, the party that predicted the outcome correctly can release all locked funds from the escrow to their own Bitcoin wallet: both the funds the party itself locked and the funds that the counterparty locked.
That’s it, the workflow is as simple as that.
Dispute case
It’s worth asking, what exactly happens in case of a disagreement between the two parties in a prediction contract?
Say we have a dispute in which case Hodl Hodl intervenes and resolves the dispute by:
Administrator has the following options: either resolve the dispute in favor of one of the counterparties, or to recognize a draw.
We do not expect this scenario to be difficult or waste our resources, because every offer is pre-moderated and we apply strict rules for offer creation.
That’s it
A new milestone begins in our company’s development, we would appreciate support from your side: please share this news, send us suggestions and bugreports about this project, and be sure you’ll see more exciting things to come very soon.
Predictions on MAINNET
The mainnet version is going live in June 2019, follow our news to stay informed!
submitted by artur97 to Bitcoin [link] [comments]

HPB (High-Performance Blockchain) Whitepaper breakdown

If you'd like to read the first article I published on reddit on HPB, please take a look here
People often skim over white papers as they simply cannot be bothered to read through them. Let’s be honest, most of them are as dull as dishwater and even more so when full of technical blockchain related buzzwords that most people new to cryptocurrencies simply don’t understand.
Well as someone now invested in High-Performance Blockchain (HPB), I want to know and understand what the company is trying to achieve, so I’ve spent some time dissecting the white paper and actually gathering the information behind the buzzwords to determine if the company offers real key differentiators and unique selling points that allow the proposal to stand separately from the competition.
So here is my breakdown of some of the key sections from the soon-to-be-updated HPB whitepaper
Ok so TPS stands for “transactions per second” and is reasonably well recognised in the world of blockchain but often misunderstood or under-appreciated. Essentially HPB are stating in their white paper that TPS is a bottleneck for all current blockchain solutions and this bottleneck restricts development and simply will not meet future business needs.
So let’s just explore this for a minute. Anyone who knows Bitcoin and Ethereum and have tried to transfer their coins from a wallet to an exchange or vice-versa, may at some point have experienced slow transfer or “transaction” times. This is usually when the network is congested, and transactions which usually take a few minutes, are suddenly slowed down considerably. Let's say you are transferring some Eth to an online exchange to buy another coin as you’ve noticed that this other coins price is dropping, and you want to catch the low price to buy in before the bounce……so you setup the transfer, increase your Ether Gwei to 50 to get things moving quicker, and then you wait for your 12 block confirmations to be confirmed before the Eth appears in your exchange wallet. You wait 10-15 minutes and the Eth suddenly appears, only to find the price as already bounced on the coin you wanted to buy and it’s already up 10% on what it happened to be 15 minutes ago! That delay has just cost you $500!
Delay can be extremely frustrating, and can often be expensive. Now whilst individuals tend to tolerate slight delays on occasion, (for now!) It will simply be unacceptable moving forward. Imagine typing in your pin at a cashpoint/ATM and having to wait 4-5 minutes to get your money! No way!
So TPS is important….in fact it’s more than important, it’s fundamental to the success of blockchain technology that TPS speeds improve, and blockchain networks scale accordingly! So how fast are current TPS rates of the big crypto’s?
Here is the estimated TPS of the Top 10 cryptos. I should point out that this is the CURRENT TPS speed. Almost all of the cryptos mentioned have plans in the pipeline to scale up and improve TPS using various ingenious solutions, but as of TODAY this is the average speed.
  1. Bitcoin ~7 TPS
  2. Ethereum ~15 TPS
  3. Ripple ~1000 TPS
  4. Bitcoin Cash ~40 TPS
  5. Cardano ~10 TPS
  6. Litecoin ~56
  7. Stellar ~3700
  8. NEM ~4 TPS
  9. EOS ~0 TPS
  10. NEO ~1000 TPS
Like I say, almost all of these have plans to increase transaction speed and plans to address scalability, but these are the numbers I have researched as of this particular moment in time.
Let’s compare this to Visa, the global payment processor, which has an “average” daily peak of around 4,500 TPS and is capable of 56,000 TPS.
Some of you may say, “Well that doesn’t matter, as in a few months’ time [insert crypto I own here] will be releasing [insert scalability plan of my crypto here] which means it will be capable of running [insert claimed future TPS speed of my crypto here] so my crypto will be the best in the world!”
But this isn’t the whole story….. far from it. You see this doesn’t address a fundamental element of blockchain…..and that is the PHYSICAL transference of information from one node to another to allow for block validation and consensus. You know….the point where the data processed moves up and down the OSI stack and hits the physical layer on the network card and gets transported through the physical Ethernet cable or fibre that takes it off to somewhere else.
Also, you have to factor in the actual transaction size (measured in bytes or kilobytes) that is being transferred. VISA transactions vary in size from about 0.2 kilobytes to a little over 1 kilobyte. In order to maintain 4500 TPS, and if we use an average of 0.5kb (512bytes) per transaction, then you need to be physically transporting approximately 2.25mb of data per second. OK so this seems tiny! We all have 100mb broadband at home and the NIC network cards in your computers are capable of running 10gb ….so 2.25mb is nothing…… for now!
If we go back to actual blocks on the blockchain, let’s first look at bitcoin. It has a fixed 1mb block size (1,000,000 bytes) so if bitcoin TPS is at around 7 TPS, then we need to be physically transporting 6.83mb per second per block. Still pretty small and easy to cope with….Well if that’s the case then why is bitcoin so slow?
Well if you consider the millions of transactions being requested every day, and that you can only fit 1mb of data into a single block, then if you imagine the first block in the queue gets processed first (max 1mb of data), but the rest of the transactions have to wait, to see if they hopefully are in the next block, or maybe the next one? Or maybe the next one? Or the next one?
Now the whole point of “decentralization” is that every node on the blockchain network is in agreement that the block is valid…this consensus typically takes around 10 minutes for the blockchain network to fully “sync” on the broadcasted block. Once the entire network is in agreement, they start to “sync” the next block. Unfortunately if your transaction isn’t at the front of the queue, then you can see how it might take a while for your transaction to get processed. So is there a way of moving to the front of the queue, similar to the way you can get a “queue jump pass” at a theme park? Sure there is….you can pay as higher-than-average transaction fee to get prioritized….but if the transaction fees are relative to the cryptocurrency itself, then the greater the value of the crypto becomes (i.e. the more popular it becomes), the higher the transaction fee becomes in order to allow you to make your transactions.
Once again using the cashpoint ATM analogy, it’s like going to withdraw your money, and being presented with some options on screen similar to that of, “You can have your money in less around 10 minutes for $50, or you can wait 20 minutes for $20, or you can camp out on the street and wait until tomorrow and get your money for $5”
So it’s clear to see the issue…..as blockchain scales up and more people use it, the value of it rises, the cost to use it goes up, and the speed of actually using it gets slower. This is not progress, and will not be acceptable as more people and businesses use blockchain to transact with money, information, data, whatever.
So what can be done? …Well you could increase the block size……more data held in a block means that you have a greater chance of being in a block at the front of the queue……Well that kind of works, but then you still have to factor in how long it takes for all nodes on the blockchain network to “sync” and reach consensus.
The more data per block, the more data there is that needs to be fully distributed.
I used visa as an example earlier as this processes very small amounts of transactional data. Essentially this average 512 bytes will hold the following information: transaction amount, transaction number, transaction date and time, transaction type (deposits, withdrawal, purchase or refund), type of account being debited or credited, card number, identity of the card acceptor (organization/store address) as well as the identity of the terminal (company name from which the machine operates). That’s pretty much all there is to a transaction. I’m sure you will agree that it’s a very small amount of data.
Moving forward, as more people and businesses use block-chain technology, the information transacted across blockchain will grow.
Let’s say, (just for a very simplistic example) that a blockchain network is being used to store details on a property deed via an Ethereum Dapp, and there is the equivalent of 32 pages of information in the deed. Well one ascii character stored as data represents one byte.
This “A” right here is one byte.
So if an A4 page holds let’s say 4000 ascii characters, then that’s 4000 bytes per page, or 4000x32= 128,000 bytes of data. Now if a 1mb block size can hold 1,000,000 bytes of data, then my single document alone has just consumed (128,000/1,000,000)*100 = 12.8% of a 1mb block!
Now going further, what if 50,000 people globally decide to transfer their mortgage deeds? Alongside those are another 50,000 people transferring their Will in another Dapp, alongside 50,000 other people transferring their sale-of-business documents in another Dapp, alongside 50,000 people transferring other “lengthy” documents in yet another Dapp? All of a sudden the network comes to a complete and utter standstill! That’s not to mention all the other “big data” being thrown around from company to company, city to city, and continent to continent!
Ok in some respects that's not really a fair example, as I mentioned the 1mb block limit with bitcoin, and we know that bitcoin was never designed to be anything more than a currency.
But that’s Bitcoin. Other blockchains are hoping/expecting people to embrace and adopt their network for all of their decentralized needs, and as time goes by and more data is sent around, then many (if not all) of the suggested scalability solutions will not be able to cope…..why?
Because sooner or later we won’t be talking about megabytes of data….we’ll be talking about GB of data….possibly TB of data on the blockchain network! Now at this stage, addressing this level of scalability will definitely not be purely a software issue….we have to go back to hardware!
So…finally coming to my point about TPS…… as time goes by, in order for block chains to truly succeed, the networking HARDWARE needs to be developed to physically move the data quickly enough to be able to cope with the processing of the transactions…..and quite frankly this is something that has not been addressed…..it’s just been swept under the carpet.
That is, until now. High-Performance Blockchain (HPB) want to address this issue…..they want to give blockchain the opportunity to scale up to meet customer demand, which may not be there right at this moment, but is likely to be there soon.
According to this website from just over a year ago, more data will be produced in 2017, then in the entire history of civilization spanning 5000 years!
That puts things into perspective when it comes to data generation and expected data transference.
Ok so visa can handle 56,000 TINY transactions per second….Will that be enough for block chain TPS in 5 years’ time? Well I’ll simply leave that for you to decide.
So what are HPB doing about this? They have been developing a specialist hardware accelerated network card known as a TOE card (TOE stands for TCP/IP Offload Engine) which is capable of supporting MILLIONS of transactions per second. Now there are plenty of blockchains out there looking to address speed and scaling, and some of them are truly fascinating, and they will most likely address scalability in the short term….but at some point HARDWARE will still be the bottleneck and this will still need to be addressed like the bad smell in the room that won’t go away. As far as I know (and I am honestly happy to stand corrected here) HPB are the ONLY Company right now who see hardware acceleration as fundamental to blockchain scalability.
No doubt more companies will follow over time, but if you appreciate “first mover advantage” you will see how critical this is from a crypto investment perspective.
Here are some images of the HBP board
HPB board
HPB board running
Wang Xiaoming holding the HPB board
GVM (General Virtual Machine mechanism)
The HPB General virtual machine is currently being developed to allow the HPB solution to work with other blockchains to enhance them and help them to scale. Currently the GVM is being developed for the NEOVM (NEO Virtual Machine) and The EVM (Ethereum Virtual Machine) with others planned for the future.
Now a lot of people feel that if Ethereum were not hampered with scalability issues, then it would be THE de-facto blockchain globally (possibly outside of Asia due to things like Chinese regulation) and that NEO is the “Ethereum of China” developed specifically to accommodate things like Chinese regulation. So if HPB is working on a hardware solution to help both Ethereum and NEO, then in my opinion this could add serious value to both blockchains.
Claim of Union Pay partnership
To quote directly (verbatim) from the whitepaper:
After listening to the design concept of HPB, China's largest financial data company UnionPay has joined as a partner with HPB, with the common goal of technological practice and exploration of financial big data and high-performance blockchain platform. UnionPay Wisdom currently handles 80% of China's banking transaction data, with an annual turnover of 80 trillion yuan. HPB will join hands with China UnionPay to serve all industry partners, including large banks, insurance, retail enterprises, fintech companies and so on.
Why is this significant? Have a read of this webpage to get an idea of the scale of this company:
Now some people will say, there’s no proof of this alliance, and trust me I am one of the biggest sceptics you will come across….I question everything!
Now at this stage I have no concrete evidence to support HPB’s claim, however let me offer you my train of thought. Whilst HPB hasn’t really been marketed in the West (a good thing in my opinion!) The leader of HPB Wang Xiaoming is literally attending every single major Asian blockchain event to personally present his solution to major audiences. HPB also has the backing of NEO, who angel invested the project.
Take a look at this YouTube video of Da Hongfei talking about NEO, and bringing up a slide at the recent “BlockChain Revolution Conference” on January 18th 2018 – If you don’t want to watch the entire video (it’s obviously all about NEO) then skip forward to exactly 9m13s into the video and take a look at the slide he brings up. You will see it shows HPB. Do you honestly thing Da Hongfei, the leader of NEO, would bring up details of a company that he felt to be untrustworthy to share with a global audience?
Blockchain Revolution 2018 video
Here are further pictures of numerous events that HPB’s very own Wang Xiaoming has presented HPB…..in the blockchain world he is very respected after releasing multiple whitepapers and publishing several books over the years on blockchain technology. This is a “techie” with a very public profile…..this is not some guy who knows nothing about blockchain looking to scam people with a dodgy website full of lies and exaggerations!
Wang Xiao Ming presentation at Lujiazui Blockchain event
Wang Xiao Ming presenting at the BTAS2017 summit
Wang Xiao Ming Blockchain presentation
I won’t go into some of the other “dubious” altcoins on the markets who claim to be in bed with companies like IBM, Huwawei, Apple etc, but when you do some digging they have a registered address at a drop-mail and you can only find 3-4 baidu links about the company on the internet, you have to question their trustworthiness
So do I believe in HPB…..very much so :-)
Currently the HPB price sits at $6.00 on www.bibox.com and isn’t really moving. I believe this is due to a number of factors.
Firstly, the entire crypto market has gone bonkers this last week or so, although this apparently happens every January.
Secondly the coin is still on relatively obscure exchanges that most people have never heard of.
Thirdly, because of the current lack of expose, the coin trades at low volume, which means (in my opinion...I can’t actually prove it) that crypto “bots” are effectively controlling the price range as it goes up to around $9.00 and then back down to $6.00, then back up to $9.00, then back down to $6.00 and over and over again.
Finally the testnet proof of concept hasn’t been launched yet. We’ve been told that it’s Q1 this year, so it’s imminent, and as soon as it launches I think the company will get a lot more press coverage.
UPDATE - It has now been officially confirmed that HPB will be listed on Kucoin
The tentative date is February 5th
So, for the investors out there….. It’s trading at $6.00 per coin, and with a circulating supply of 28 million coins, it gives the company an mcap of $168,000,000
So what could the price go to? I have no idea as unfortunately I do not have a crystal ball in my posession….however some are referring to HPB as the EOS of China (only HPB has an actual working, hardware-focussed product as opposed to plans for the future) and EOS currently has an mcap of $8.30 billion dollars…… so for HPB to match that mcap, the price of HPB would have to effectively increase almost 50-fold to $296.4 - Now that’s obviously on the optimistic side, but even still, it shows its potential. :-)
I believe hardware acceleration alongside software optimization is the key to blockchain success moving forward. I guess it’s up to you to decide if you agree or disagree with me.
Whatever you do though…..remember that Most importantly of all…… DYOR!
My wallet address, if you found this useful and would like to donate is: 0xd7FAbB675D9401931CefE9E633Ef525BfBa7a139
submitted by jpowell79 to u/jpowell79 [link] [comments]

Project: RaiBlocks ATM

Hi everyone,
Happy to be part of this great and warm community. I want to contribute by helping to push this great tech's adoption forward. Let this be the first step.
Many of you have probably heard or seen Bitcoin ATMs. Different models and companies behind those exist but all they have same main issues: TX fees and slow network. A related Business Insider article.
Conclusion: Bitcoin's story as a real-world digital currency has ended before it even started.
Why I made this post is to start discussion about building "an ATM" for a fee-less and fast cryptocurrency.
The plan:
1) Find an abandoned Bitcoin ATM from a landfill or order one or two from Alibaba.
2) Modify it.
These are the features I think would be the most obvious ones:
Depossit (buuy coins using FIAT):
1) Insert a bill (or a credit card).
2) Flash your RaiBlocks account's QR code (or print a paper wallet).
Withdrawwal (seell coins to FIAT):
1) Display user a unique QR code where to send funds.
2) Output FIAT cash (or make a FIAT depossit to a desired bank account).
It's always important to start with a MVP (Minimum Viable Product) and not trying to add all the features at once. The very first thing would be to make the kiosk act as a full RaiBlocks node. Then start adding more features.
I'm familiar with Chinese factories and my company has sourced and manufactured various items in there. Heck, after the PoC (Proof of Concept) is completed, I can even go and visit a factory to get mass production started.
What do you guys think about the project? Who would like to join?
I'm willing to create a small developer community around this too.
(EDIT: Had to add some typos so that AutoModerator allowed me to post on /RaiBlocks)
submitted by mlgnt to RaiBlocks [link] [comments]

BitcoinBriefcase: Its Begun! Alpha units are being assembled!

BitcoinBriefcase: Its Begun! Alpha units are being assembled! submitted by __gbg__ to Bitcoin [link] [comments]

DEEX Exchange crypto ATMs. Friendship between fiat money and cryptocurrency is available.

DEEX Exchange crypto ATMs. Friendship between fiat money and cryptocurrency is available.
The reasons for such interest are the following:

  1. Very simple and user-friendly interface. In addition to the standard set of payments (mobile communications, Internet, etc.) there is a convenient and intuitive interface for buying cryptocurrencies with which it is almost impossible to make a mistake. Most people did not need consultation at all, everything was clear.
  2. Camera for the wallet’s QR-code. To buy bitcoin, for example, there is no need to enter a long set of meaningless letters and numbers (in which it is so easy to make mistakes. For this purpose there is a built-in video camera which recognizes the QR-code of the wallet for automatically entering all the necessary characters. Despite the error-free operation of the scanner the customer is given the opportunity to check all the characters by himself using the crypto ATM screen before making a purchase of the desired cryptocurrency.
  3. Uninterrupted work of the note acceptor. We appreciate your time, therefore, in our crypto ATMs we use the most reliable and fast device for accepting notes in order to exclude the practice of multiple refusals when making the same note.
  4. Instant real-time purchase of cryptocurrency. After checking the address of the wallet and making the necessary amount of paper notes customer must press just one button to complete the purchase operation. Within 1-2 seconds there will be a purchase/sale transaction of the required cryptocurrency and in a couple of seconds a paper check will appear in which all information regarding the transaction just concluded will be printed (we strongly recommend to keep the check until the transaction is confirmed).

  1. Beneficial course for cryptocurrency buying. The course of cryptocurrency tends to be the most profitable for a client since the transaction is made at the rate closest to the market average at the time of the transaction.
  2. Crypto ATM’s integration with the "native exchange". Due to the fact that the crypto ATM is part of the DEEX financial ecosystem, the commission for making purchases with cryptocurrencies will always be the lowest possible and obviously smaller than that of competitors forced to work through external crypto-exchanges.

submitted by 1xratedx to DEEX_Exchange [link] [comments]

Bitcoin Briefcase has been delivered!

Bitcoin Briefcase has been delivered! submitted by Julian702 to Bitcoin [link] [comments]

Would you like a Coin ATM for crypto?

Hi I am looking to create a exchange machine for crypto currencies.It will receive coins ,calculate equivalent value of a cryptocurrency of your choosing e.x Bitcoin or etherum. Additionally the machine will have and a camera that will read the address of the wallet you want to send the cryptos.Also it would be a good idea i think if it had and a lcd for showing varius informations. I looked a little bit the hardware that it is need it to create something like this and I found that it is possible with: -raspberry pi
-coin acceptor https://www.adafruit.com/product/787
-raspberry pi camera https://www.hackster.io/faweiz/qr-code-on-raspberry-pi-5f6764
-wifi module for internet access.
I think that with this hardware it is possible to create a device that work like a small atms for currencies. And it will be relative cheap to have it in coffee shops or bars. Note: The owner of the machine will controll the exchange rate.
Do you think that it is possible to make this project? What do you think about this idea? What other functions could this thing do?
If anyone interesting to help with this project please pm me.
submitted by jimogios to CryptoCurrency [link] [comments]

Cheapest Bitcoin ATM - DIY style

Cheapest Bitcoin ATM - DIY style submitted by maincoon to Bitcoin [link] [comments]

Would you like a Coin ATM for crypto?

Hi I am looking to create a exchange machine for crypto currencies.It will receive coins ,calculate equivalent value of a cryptocurrency of your choosing e.x Bitcoin or etherum. Additionally the machine will have and a camera that will read the address of the wallet you want to send the cryptos.Also it would be a good idea i think if it had and a lcd for showing varius informations. I looked a little bit the hardware that it is need it to create something like this and I found that it is possible with: -raspberry pi
-coin acceptor https://www.adafruit.com/product/787
-raspberry pi camera https://www.hackster.io/faweiz/qr-code-on-raspberry-pi-5f6764
-wifi module for internet access.
I think that with this hardware it is possible to create a device that work like a small atms for currencies. And it will be relative cheap to have it in coffee shops or bars. Note: The owner of the machine will controll the exchange rate.
Do you think that it is possible to make this project? What do you think about this idea? What other functions could this thing do?
If anyone interesting to help with this project please pm me.
submitted by jimogios to raspberryDIY [link] [comments]

Watch out: the issue is not Core vs. XT, it is small blocks vs bigger blocks.

People should keep in mind that the "block size issue" is strictly technical, "small blocks versus bigger blocks". It should not be conflated with the political issue "Core vs XT" or "Blockstream vs Gavin and Mike".
How the fork will develop depends on one parameter only: how many miners will be accepting big blocks at some time in the future. It does not matter much which version each miner is running. The preferences of the "economic majority" may influence the decision of the miners, but once a substantial majority of the miners has decided to accept big blocks, the "economic majority" is forced to accept them too.
I will consider first the case of just two block sizes "small" and "big". (For today's dilemma, "small" would be to 1 MB, and "big" woule be anything more than 1 MB but not more than 8 MB. But other sizes may apply in other occasions.) Later I will comment what happens when there are three or more values of the block size limit "competing" at the same time (e.g. 1 MB, 2 MB, and 8 MB; or a fixed limit against a dynamically adjusted limit).
The fork
The chain will (theoretically) split once the first big block B(N) gets mined. There will be a "big-block" branch that grows on top of that block, containg perhaps other big blocks; and a "small-block" branch that starts with an alternative small block C(N) with the same block number and contains only small blocks.
If, at that moment, more than 50% of the miners are accepting big blocks, the big-block branch (mined by them) will eventually grow faster than the small-block branch (mined by the rest of the miners). Apart from some unlucky initial accidents, the split will be persitent and the big-block branch will grow faster.
On the other hand, if, at that moment, less than 50% of the miners are accepting big blocks, the small-block branch will eventually grow longer. Then the big-block miners will stop mining their branch, which will be orphaned, and they will start mining the small-block branch too. If someone mines another big block, the chain will split again. This "stuttering" situation will repeat over and over, every time some miner happens to mine a big block. There will be a single small-block chain with recurrent big-block side branches that are orphaned sooner or later.
Sharp and messy forks
Ideally, whenever a big block is actually solved and posted, either almost all miners (counted by hashpower) should be accepting big blocks, or almost all miners should be rejecting them.
If, at some point, 75% of the miners suddenly start accepting big blocks, the other 25% had better start accepting them too. Ditto if, after every miner is accepting big blocks, 75% suddenly decide to start rejecting them.
More generally: if the miners are mostly in agreement about accepting or rejecting big blocks, but a majority changes their mind, in either direction, they had better all change together, before someone posts another big block.
As long as all miners are mostly in agreement, it is safer for all clients to accept big blocks than to reject them.
If the miners ever get into a messy state, with significant percentages of both big-block acceptors and big-block rejectors, all clients had better stop using bitcoin until the mess gets cleared up, and almost all miners have again converged to the same policy.
How miners should get consensus
Miners should not rely on the block version stamps to figure whether other miners are accepting or rejecting big blocks. Those tags may be mistaken, ambiguous, or misunderstood. Moreover, there may be idiots or malicious miners lying about their intentions through the tags.
Instead, the largest miners should talk to each other and make sure that at least 70% of the total hashpower is really commited to accept big blocks, or 70% is committed to reject them. Then those miners should announce publicly their intention to change (or not) their big-block policy at some block number. The rest shoulfd then follow, by self-interest.
Multiple block size limits
If there are m ≥ 3 distinct values S(1) < S(2) < ... < S(m) of block size limit competing for adoption (e.g. 1 MB, 2 MB, and 8 MB), and miners are divided between them, the analysis is not much more complicated. There will be m branches in general, each branch Ch(i) associated to a given candidate limit S(i). The branch Ch(i) will contain blocks with sizes up to S(i), and at least one block with size greater than S(i-1). Miners who accept blocks of size up to S(i) will mine the longest of the branches Ch(1), Ch(2), ..., Ch(i). Depending on how the miners are distributed, some branches will be repeatedly orphaned and restarted, others will grow at different paces. If Ch(i) is the fastest-growing branch, it is hoped that all miners will quickly change their size limits to S(i).
So, Core or XT?
As observed above, it does not matter which version each miner is running -- Core, XT, or something else. (In fact, that information cannot be determined by analyzing the miner's behavior. Note that any version can be patched to insert any version stamp on the block.) It does not even matter what precise formula each miner is using to determine the maximum block size (BIP100, BIP101, or any ad-hoc rules) and whether it is fixed or will increase in some distant future.
A software that rejects big blocks can be the current Core version, or XT minus the 8 MB patch, or any other independent code with a 1 MB block size limit. A software that accepts big blocks may be the current XT (with or without the other patches), or the current Core with an 8 MB patch (by repentant Blockstream devs, or by someone else), or any other version that accepts 8 MB blocks.
In fact, any client or node could take the Core implementation, change the line "MAX_BLOCK_SIZE = 1000000" to say "MAX_BLOCK_SIZE = 8000000", and start running that version now. There will not be a significant risk in that, unless the chain splits is a messy way; but then the most prudent attitude for a client is to stop using bitcoin until the splits resolves with the death of one chain.
Even a miner could do that, as long as he avoids creating big blocks until it is "safe" to do so, and promptly reverts to the smaller limit in a messy split dominated by small blocks.
That is the main point: the "Core vs XT" and "Blockstream vs Hearn&Gavin" issues are red herrings. Again, the only thing that really matters is how many miners will be accepting big blocks at some point in the future.
submitted by jstolfi to bitcoinxt [link] [comments]

Let's get a few things clear about cryptocurrencies.

This is what you really need to know, juxtaposing BTC against USD. While they function differently, they are actually quite similar in their most significant requirement to succeed, value anchoring.
Transactional Ease
BTC is fundamentally a digital currency, whereas USD is a hybrid that allows physical cash exchanges. USD is easier to hold and transfer small amounts in person. Both BTC and USD can be transferred digitally, but BTC is faster for large international transfers.
Unique Certification
Unique certification is how a currency defends against duplication to avoid currency fraud. BTC has the blockchain, whereas USD has pattern minting for physical cash and rigorous laws/procedures for banks' digital accounts. BTC is weak against 51% attacks and vulnerable code. USD is weak against counterfeiting and bank fraud.
Supply Control
BTC can be mined by solving progressively harder computational problems (capped at pre-defined limit, 21M). USD is printed and loaned out (generally unlimited). Money supply presents an interesting problem for BTC. If it gains mass non-speculative adoption, it faces the same challenge that USD underwent around economic growth and the need for a larger supply to maintain a healthy velocity of money. Though credit accounts help, we may see some novel indirect exchange technologies in the future.
Value Anchoring
This is the most important principle behind how fiat-like currencies work. Like how US restaurants charge a fixed price for their food, US stores have an entrenched price system that ignores currency exchange rates. No matter what, $10 USD will get you a decent meal in many US areas. USD also has absolute demand in the form of government taxes and fees.
Bitcoin has no such value anchors. This is its most fundamental challenge. There is nothing to suggest a burger should cost 1 BTC or 0.1 BTC due to the vast majority of BTC acceptors using exchange-derived prices. There is no fundamental institution that demands BTC. Volatility is left unrestrained.
This marks the importance of backing a currency to establish entrenched-price value anchors before withdrawing the backing. Even those who adopt BTC solely to transfer money want stability. Hypothetically, consider what happens if the US government introduces a Cryptocurrency Stability Program that offers to buy any batches of 1K BTC for 1M USD. That's a unit price of $1000 per BTC. This program may cause BTC to plummet, but it will produce some stability and the insurgence of fixed BTC prices. This is one of the roads toward a successful cryptocurrency, though to the stable chagrin of wild speculators.
submitted by 101trajectory to investing [link] [comments]

Hash time lock contract attack idea (shoot it down please)

Lets say alice wants to pay eve, through bob. Eve is a hacker who has the ability to ddos bob for 2 hours, and furthermore Eve and Alice are in cahoots here. Alice sends satoshis to bob, bob opens up a payment to eve, and then eve takes the satoshis in exchange for a payment channel hash. Eve then DDOS's bob so that bob cannot send the cryptographic hash out confirming his transaction from alice to bob. The time lock expires, and suddenly alice no longer has to pay. Alice and Eve split the satoshis.
Now, the DDOS is an idea, but a more sinister idea is to send out a worldwide worm that at a preset time simply modifies the firewall conditions of windows and adds restrictions that block communications going out for bitcoin transactions for two hours. Then, with the known time block, set up payment channels designed to fail such that the acceptors of the contracts miss their timelock renewal or timelock claiming time. With nodes freely accepting contracts, such an attack is a side channel attack that could force people to forfeit their chain, thus breaking trust in the system. Could perhaps attaching an ip address and then pinging the address to see if its up and not being silenced rectify this attack? If it is being silenced, perhaps the timelock can be extended, or the payment chain reversed. Charlie?
Litecoin donation address so I can think more about LTC security and less about work xD Lc31Q7RGSGy1oWuC1WGevJUgFstmPoJfAd
submitted by frostfire1337 to litecoin [link] [comments]

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Retiro de tcoin TCN a la Wallet

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