My PPLive/PPTV startup experience submitted by
I am a person who is very eager to pursue technology and geek spirit. I always want to do things that change the world.
In 2004, when I was still in college, suddenly one day, Bill approached me and said that there was no way to watch NBA basketball games smoothly via the Internet on campus . Can we do a real-time live video software using P2P transmission technology together? This idea was similar to the popular BitTorrent download software at that time. When I looked at this idea, I could not only solve my own needs for watching NBA, but also the most important thing is that I could not resist the temptation of technical challenges, so I quickly agreed to Bill. In this way, we started our business together and the software soon became very popular in China. PPLive was later rebranded as PPTV. Bill became the Founder and CEO of PPTV and I became the Chief Architect of PPTV and began to focus on P2P transmission technology.
The first thing PPLive achieved was real-time streaming via peer to peer transmission technology. What is real-time streaming P2P transmission technology? It is simultaneous data upload and download at the same time, which makes live streaming possible. Simply put, I am for everyone, everyone is for me.
In the beginning, I led the team to build an live broadcast platform with P2P. Because the characteristics of live broadcast are that many people will share the same data, this way we can achieve a bandwidth saving ratio of more than 99.9% when we watch the most popular content at the same time. With only 10Mb of release bandwidth, it can support up to 10 million users to watch TV at the same time.In this case, we can achieve excellent QoS(Quality of Service): the average time to start playing is 1.2 seconds; the average count of interruption is 1.6 seconds per half an hour; the whole network latest delays from broadcast source is up to 90 seconds.
After the P2P live broadcast is completed and became sophisticated, we began to develop P2P VOD(video on demand) because the demand for VOD was getting bigger and bigger. P2P VOD on-demand and P2P live broadcast are different from each other. VOD is the need to use hard disk storage and memory cache, which is more difficult than the live broadcast. Besides, it is the difference between popular content and unpopular content in the VOD system, and the P2P effect of unpopular content is not as good as the popular content. However, our P2P VOD has achieved excellent QoS(Quality of Service) too: 90% bandwidth saving ratio; the average time to start playing is 1.5 seconds; the average count of interruption is 2.2 seconds per half an hour; the average time to play when seek position is 0.9 second.
Subsequently, I led the team to port the P2P kernel to the embedded system. We streamlined the P2P transmission protocol and made a number of optimizations in terms of performance. The hard disk in embedded device read and write is not used for regular mechanical hard disk, so we have done a good amount of protection measures, which enable the P2P core to run on embedded devices. Then we quickly launched an iOS client that supports P2P, an Android mobile phone client that supports P2P, and finally an Android set-top box client that supports P2P.
Soon after, amid the growing popularity of smartphones, video creation became easier than ever Smartphone users become more enthusiastic about producing their own content, which helped video content increased dramatically. I led the team to start the cloud broadcast service, giving each user a certain amount of free storage space. On this platform users can freely upload,download, and share video content, In fact, it is very similar to network hard drives such as Google Drive. The difficulty of network hard drive with share is similar to that of VOD, but the count of videos is far more than that of VOD. The content head effect is more obvious and a large amount of content is stored in the tail. We have put a great amount of work onto the optimization of this particular area.
In 2013, PPTV was sold it to a listed Chinese company, Suning Yunshang, for US$420 million. A year later, I waved goodbye to video and P2P technology, which I had been doing for over ten years. To pursue a bigger dream, I started a new path to another startup. My startup experience in the JDO
After the success of PPTV startup, I have been pursuing new technology and geek spirit, so I did not choose video and P2P fields again, instead, I devoted myself to intelligent hardware and artificial intelligence. In 2014, I founded JDO with Cloud Wong, a company which produces cars that implement AI technology and connected to the Internet. In the past four years, I have served as CTO in JDO, and have accumulated in-depth technical experience in intelligent hardware, embedded software, artificial intelligence, and machine learning.
The automotive industry is a very closed industry. We need a long business negotiation cycle for everything we do and the product development cycle is limited by the iteration cycle of cars. In this environment of only catering to businesses, I could not entirely follow my ideas to be innovative. JDO was doing very well in the automotive field, where they have received orders from many internationally renowned car manufacturers. However, in order to pursue a bigger dream and to change the world, I decided to leave JDO. The thought of sharing storage
Because I am doing artificial intelligence every day, I have to do a lot of neural network training and I have established cooperation and communication with many other AI companies. To do neural network training, it requires high-end NVIDIA GPU graphics cards, such graphics cards are costly, and most of the time they are idle. I was ponder: Is there a chance to build a shared GPU graphics platform, which encourages everyone to rent out unused GPU resources? Meaning when I need it, I have to pay to use other people’s unused GPU resources to calculate; when others need it, they have to pay to use my remaining GPU resources to calculate; so for startups, you don’t need to buy so many GPUs at once. The cost will be reduced and companies that use less can make money.
I took the idea of sharing a GPU graphics platform, did a simple MVP(Minimum Viable Product) to verify my thoughts and let several cooperative AI companies to use this MVP. However, I found that they have not been used. After I learned about the situation, I realized that although AI companies like lower price with sharing GPU graphics platform, they are more concerned about the security of data than price. AI company’s data collection often requires high cost to collect enough data. If they put these data on shared computers, they are afraid of being stolen data by competitors. More importantly, the neural network does not have an excellent way to split into multiple computer calculations, encrypt the data in time, and the data must be decrypted before entering the neural network, which is easy to be stolen. Technically, there is currently the no good way to decentralize the neural network model and there is no good way to send cryptographic data directly into the neural network calculation. Due to this obstacle plus other reasons, I finally gave up on this idea.
At this time, P2P storage suddenly came to my mind. I used to work on P2P video for 10 years. If you do not share the GPU, but only the hard disk and bandwidth, could this be feasible? After careful consideration, as we are entering the Internet of Things era, a large number of households have idle computers which not fully used, a large number of households purchase bandwidth on a monthly basis but not fully used, and a large number of IoT devices have storage capabilities. If these vast amounts of idle resources can be fully utilized, this will be an excellent cause for human society.
More importantly, what was done in PPTV before was that users share content voluntarily without any incentives. What is needed now is to encourage users to share by giving them incentives. That is, some users use the service to pay for the fee, and some users provide services to earn income, thus establishing a sharing storage network, just like Uber and Airbnb, passengers and rentees use the service to pay the fee, the driver and the landlord provide services to earn income.
Therefore, I came up with this sharing storage idea. The few problems that can be solved are:
- The cost is lower because, For miners, this is the reuse of idle resources. It is a fairly zero cost regarding cost structure.;
- Faster, P2P can speed up the transmission, and PPTV’s success is the best proof. After the sharing storage, because the storage nodes are everywhere on the network, the data is stored on the nearest storage node, so it can also be the fastest transmission.
- Decentralized storage is more private. because big companies do not necessarily guarantee privacy. Almost all big companies have exposed data leakage incidents. Today’s big companies are very dependent on big data and they might use user data for AI training. Decentralized storage is to double-encrypt data through the user’s key and developer key, then slice it into multiple segments.In this way, different segments are stored on different computers. Moreover, the sharing platform itself does not store data, which completely prevents leakage risk. Only the user’s key can open the data and the sharing operator has no way. Also, for hackers, hacking into one computer is useless, because the data is stored across many different computers This significantly increases the difficulty for hackers to steal data.
Although shared storage can solve these problems, it also brings many challenges.
- How to guarantee the stability of miner nodes? Some nodes will go online soon and some will go offline, just like the users of PPTV before. How to make stable products based on unstable nodes is a challenge, but it is also a thing that P2P itself must do.
- The quality of the miner node: For example, the hard disk of some miner nodes may be old, and it is easy to break; for another example, the bandwidth quality of some miner nodes may be terrible; for another example, some place’s power is unstable, and there are power outages frequently.
- Cheating on evil miner nodes: Since there are gains, some people find ways to cheat. It is the weakness of human nature and it is inevitable.
Although these problems are challenging, for me who have done 10 years of international P2P projects, I believe that these problems can be solved very well in the end, because most of the problems have been encountered before in PPTV.
However, if it’s just shared storage, even if you do the above, why do you believe that your income distribution is fair? It is the value of the blockchain.
The fate of my blockchain, starting in 2010, I was exposed to Bitcoin, a P2P currency system. As a commercial P2P practitioner, I quickly read through Bitcoin’s code: block, block hash, nonce, and mining algorithms, which are quickly understood. However, at the time I only felt the greatness of Bitcoin’s technology. In business, I didn’t understand it so deeply.
Later, Ethereum was born. In my opinion, in addition to optimizing Bitcoin’s block performance and mining algorithm, Ethereum’s most significant improvement is that Bitcoin can only execute simple instructions OPCODE into complex logic code. Virtual machine code and can program in solidity high-level language. This blockchain can be used not only for digital currencies but also for writing a variety of smart contracts that work in many scenarios.
Later, after carefully studying the technical mechanism of the open source alliance chain fabric made by IBM, I finally found the value of the blockchain itself.
From a technical point of view, blockchain is essentially a distributed and fully synchronized database. Since the chain scattered on different computers, there is a need to resolve the dispute, and the consensus algorithm is used to resolve the dispute. From a sociological perspective, the decentralization and consensus of blockchains can generate enormous social value. This value is that blockchain can build real trust.
The value is that the public blockchain can build true public trust.
In the sharing storage scenario, I think it is wrong to store the stored files on the chain. The function of the blockchain for shared storage does not aim at solving data storage problems, but to solve trust problems. The data stored in the chain should be trust-related data, such as user assets, storage contracts, proofs, rewards, and penalties. My thinking is getting clearer
With blockchain technology, an effective third-party node certification mechanism can be established to supervise the cheating problem of evil nodes through consensus; the rules of sharing distribution cannot be changed thought of one’s will, and there are fairness and transparency.
Because of fairness and transparency, everyone can safely invest resources in the platform network. Because of fairness and transparency, everyone is willing to invest in funds and build a reliable and competitive and large service center to provide services for incentives. Because of fairness and transparency, there is a truly transparent market that drives everyone to look for better and affordable resources to provide users with better and affordable services.
Because of fairness and transparency, we can build an economic model that is implemented purely by computer programs. For evil miners, they must be severely punished until the collateral is forfeited to 0. For the miners who are unstable online and the service, it must be punished according to the amount and the collateral is forfeited. Thus, such method stimulates miners to provide stable service. For miners who occasionally fail, there must be a warning penalty to motivate the service provider to provide more stable hardware. Through an effective economic mechanism, as long as the miners are stable, the entire platform service will be stabilized and QoS will be guaranteed.
What needs to be done is to: use blockchain to create a sharing storage network; use incentives to stimulate sharing; use public blockchain to ensure fair and transparent incentives
. The value is: affordability, speed, and privacy
. This network is easy to use and is friendly to developers. Developers can write a variety of applications in various computer languages. Eventually, I started the project PPIO
When I was doing PPTV back in the days, Bill approached me. However, this time I approached Bill and told him that I wanted to change the world again. Therefore, Bill and l once again launched this new project with the goal to change the world，which is PPIO
— — A decentralized data storage and delivery platform for developers
that values speed, affordability, and privacy.
Article author：Wayne Wong
If you want to reprint, please indicate the source
If you have an exchange about blockchain learning, you can contact me in the following ways:Github: https://github.com/omnigeeker
Telegram: @omnigeekerTwitter: @omnigeekerMedium: https://medium.com/@omnigeeker
Nowadays casinos have a new solution for this issue – Cryptocurrency. Since Cryptocurrency is somewhat anonymous many Cryptocurrency casinos have started popping up since authorities can’t regulate or enforce these casinos. This is a very dangerous situation where people are depositing their Cryptocurrency into sites that may not even be provably fair (we will get to this in a minute).
So this post has two objectives: 1. Get you to understand what you need to check in a casino BEFORE putting your money in it 2. Review the top 5 Cryptocurrency casinos in my opinion
2 crucial questions to ask every Cryptocurrency casino
Is the casino provably fair? Whenever you play at a casino (physical or virtual one) there’s always the suspicion that the house may be cheating. Of course with the more respected casinos this is rarely the case, but if you go to a somewhat unknown Cryptocurrency casino site online, how can you know that you are getting the winning odds you’re supposed to get?
A trustworthy Cryptocurrency casino will know that their “house edge” is enough to make a profit and therefor will want to prove to their players that they are not manipulating any results. They do this through a mathematical algorithm involving cryptography.
Bottom line, a provably fair casino will show you how to check that the results of the game you play are completely random. If a casino can’t supply this proof or isn’t provably fair I suggest betting with caution.
What are the casino’s payment terms? Each Casino has their own payment terms. These include: Minimum payouts Accepted payment methods and currencies Fees for withdraws and deposits
Each casino displays this information differently; some will have it on their FAQ pages while others will have a dedicated payments page with this info. You need to make sure that the casino accepts your preferred payment method and to be aware of the minimum balance to withdraw your funds.
The 5 best Cryptocurrency casinos currently available
Now that we’ve covered the basics of the different Cryptocurrency casinos out there, let’s review the top 5 Cryptocurrency casinos according to user reviews and my own personal analysis.
#1 – Bitstarz (https://www.bitstarz9.com/
) The most popular Bitcoin casino out there is undoubtedly Bitstarz. The casino is provably fair and regulated by the Curacao government. It offers around 1,000 high quality games, however it does not offer a sportsbook feature (where you can bet on popular sporting events). Bitstarz also accepts multiple currencies and isn’t limited only to cryptos.
Established in 2015 Cloudbet is licensed by E-Gambling Montenegro. The site offers an online casino with Cryptocurrency slots, roulette, blackjack and baccarat. There’s also a live casino that offers an authentic, real-life experience with a great feature enabling you to be seated immediately (no waiting required). The site also offers live sports betting including all major leagues like the EPL, the Champions League, NFL, NBA and NHL as well UFC, Cricket and Tennis.
Established in 2014 Fortune Jack is probably the most trusted Bitcoin casino out there. It is provably fair and regulated by the Curacao government. There are over 500 games available on Fortune Jack. Deposits are available through several cryptocurrencies such as Bitcoin, Litecoin, Dogecoin, Dash and many more.
LuckyOne is an Ethereum-based dice gambling Dapp that enables individuals to place bets on the result of a 100-sided dice roll without user deposits or sign-ups, using Ether – the 2nd most popular cryptocurrency in the world. Players can choose their own odds with our unique UI and payouts are instant. Game code is built entirely on top of the Ethereum blockchain, which allows for a level of transparency and accountability that traditional online casinos simply cannot provide.
BitCasino is one of the oldest Bitcoin casinos around. It started out in 2013 and has been supplying over 600 types of casino games ever since. The casino is regulated by the government of Curacao, however it is not provably fair. What makes BitCasino better than Crypto Games is its wide variety of games (including live casino games), and the fact that it supplies new players with bonuses for each deposit into your casino account. This is basically a way to get people to deposit money sooner. BitCasino supports only Cryptocurrency at the moment and no other currency is allowed for deposits or withdrawals.
Dallas is the second NBA team to accept Bitcoin. The Kings began accepting the cryptocurrency in 2014. "The Mavs will utilize the service provider BitPay to process all Bitcoin purchases," the ... NBA Team adopts Ethereum, Cryptocurrency Investment rises, Bitcoin picks to $9,000 . By John King on April 19, 2020. In the past one week, bitcoin has gained immense gain thus breaking out a consolidation outline trapping the value of cryptocurrency as high as $ 9,000 in two days. Additionally, analysts note that the revival, that propelled bitcoin attains the highest peak in a month ... Of course, it is not the first time that the worlds of sport and the NBA have collided. Back in 2014, Sacramento Kings became the first pro sports franchise to accept bitcoin for tickets and ... The Sacramento Kings are now mining Ethereum, the team announced on Wednesday. They are the first sports team entering the crypto space, and in doing so Die technisch versierten NBA-Spieler, die bereits 2014 als erstes Sportteam der Welt Bitcoin angenommen haben, haben am Mittwoch die blockchain-basierte Plattform für authentische Erinnerungsstücke gestartet. Der Gesamtwert des US-Sportmemorabilia-Marktes wird laut offizieller Ankündigung auf 5,4 Milliarden Dollar jährlich geschätzt.
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