Bitcoin is a digital currency that uses cryptography to control the creation and transfer of money. It operates on a decentralized peer-to-peer network, with no central authority. Users can obtain bitcoins by exchanging goods/services for them, purchasing them at ATMs or exchanges, mining for new bitcoins by verifying transactions on the blockchain, or accepting them as payment. Bitcoins are stored in digital wallets, and can be sent quickly and securely to anyone in the world for low fees.
The Bitcoin fever is spreading much faster than it was anticipated. It has grabbed the attention of speculators, investors, bankers and regulators around the world.
This reminds us of a popular quote ‘The more things are forbidden, the more popular they become’- Mark Twain.
In this lesson, we make an attempt to demystify the term ‘Bitcoin’.
The Bitcoin fever is spreading much faster than it was anticipated. It has grabbed the attention of speculators, investors, bankers and regulators around the world.
This reminds us of a popular quote ‘The more things are forbidden, the more popular they become’- Mark Twain.
In this lesson, we make an attempt to demystify the term ‘Bitcoin’.
Bitcoin is a digital currency, created by an unknown person, controlled by no one. It's as mysterious as it is popular. But what is it really.
I gave this presentation both to a group of venture capitalists and at the Intro2 Meetup in Silicon Valley.
If you have any questions or comments, I'd love to hear from you.
This seminar discus about BITCOIN TECHNOLOGY. its EVOlUTION,TERMS USED IN BITCOIN,MINING,AQUIRING, BITCOIN, HOW TO STORE BITCOINS, TYPES OF WALLET, HOW BITCOIN ACTUALLY WORKS, TRANSACTION .
Bitcoin is a digital, decentralized, partially anonymous currency, not backed by any government or other legal entity, and not redeemable for gold or other commodity. It relies on peer-to-peer networking and cryptography to maintain its integrity. A purely peer-to-peer version of electronic cash would allow online payments to be sent directly from one party to another without going through a financial institution. Digital signatures provide part of the solution, but the main benefits are lost if a trusted third party is still required to prevent double-spending.
Introduction to Bit Coin Model describing the key underlying technological features, operational details, uses and applications. Implications for Mobile Operators.
Bitcoin is Still Technology - Presented at Bitcoin World Conference KL - 2014Mark Smalley
Forgot to upload the presentation I gave at the World Bitcoin Conference in KL - it's a real basic introduction to Bitcoin and crypto-currencies from a technological point of view. A lot of images as they give me room to talk :-)
Most people want to jump into & know how to do ICO or participate in it. They trade buzzwords, follow the herd on blockchain & crypto token without knowing where do they really apply. The objective of this is to introduce important concepts that need to be understood before getting into ICO and crypto valuation. All these concepts are introduced gradually through a metaphor then simple mental models followed by a first principle thinking level. This is most useful for entrepreneurs and investors that ought to be thinking about blockchain, ICO & crypto tokens through first principles
Investment Strategies in Bitcoin. Slide deck on Investing and Trading Bitcoin. Introduction on Trading Bitcoin, recommendations on tools and sites as well as descriptions on fundamental and technical analysis.
Bitcoin is a decentralized electronic cash system using peer-to-peer networking to enable payments between parties without relying on mutual trust. It was first described in a paper by Satoshi Nakamoto (widely presumed to be a pseudonym) in 2008. Payments are made in bitcoins (BTC's), which are digital coins issued and transferred by the Bitcoin network.
http://secure.yocoin.org/user/registrationuser.aspx?ref=YC3213228 YOCoin provides a once in a lifetime opportunity, revolutionizing the business world of todays digital economy. The YOCoin concept is born out of the success of the pioneering cryptocurrency, Bitcoin. We make it Possible! YO COIN is more than just a cryptocurrency. To make it successful and unique, we have created a whole concept and universe to make YOCOIN a market leader.
A lecture for a college course -- CNIT 140: Cryptography for Computer Networks at City College San Francisco
Instructor: Sam Bowne
More info: https://samsclass.info/141/141_F17.shtml
All you ever needed to know on bitcoin and blockchainMarco Hauff
Basic introduction into the world of Bitcoin and Blockchain. Handy for everyone that needs to attend a birthday party and wants to join a conversation on this topic. A must for the financial / technology professional.
This talk was presented by Miguel Duarte (http://miguelduarte.pt) at Codebits (VII) (http://codebits.eu).
A video of the talk is available here: http://youtu.be/PgETyozr2cM
There original abstract was as follows:
You've probably heard of Bitcoin, right? Bitcoin is original cryptocurrency which exploded in value in the last few months and paved the way for alt-coins such as Litecoin, Quark or Dogecoin. Currently, 1 bitcoin is worth nearly $1000, which left some of the original investors and miners, with thousands upon thousands of bitcoins, quite rich. Recently, even the Dogecoin community helped fund Jamaica's bobsled team to help go to the Sochi Winter Olympics by donating 30 million dogecoins, or roughly $30,000! What the hell is that all about? This talk aims to explain what cryptocurrencies are, how they work, and how they create value.
Here are some of the topics I intend on covering:
-the advantages of cryptocurrencies;
-the basics of the blockchain;
-how new blocks are mined using proof-of-work algorithms;
-how to mine using CPU, GPU or even ASIC miners;
-differences between Bitcoin's algorithm and scrypt-based alt-coins;
-security considerations;
-an overview of how cryptocurrencies are currently being used in society;
-how cryptocurrencies can change the world's economic landscape.
Bitcoin is a digital currency, created by an unknown person, controlled by no one. It's as mysterious as it is popular. But what is it really.
I gave this presentation both to a group of venture capitalists and at the Intro2 Meetup in Silicon Valley.
If you have any questions or comments, I'd love to hear from you.
This seminar discus about BITCOIN TECHNOLOGY. its EVOlUTION,TERMS USED IN BITCOIN,MINING,AQUIRING, BITCOIN, HOW TO STORE BITCOINS, TYPES OF WALLET, HOW BITCOIN ACTUALLY WORKS, TRANSACTION .
Bitcoin is a digital, decentralized, partially anonymous currency, not backed by any government or other legal entity, and not redeemable for gold or other commodity. It relies on peer-to-peer networking and cryptography to maintain its integrity. A purely peer-to-peer version of electronic cash would allow online payments to be sent directly from one party to another without going through a financial institution. Digital signatures provide part of the solution, but the main benefits are lost if a trusted third party is still required to prevent double-spending.
Introduction to Bit Coin Model describing the key underlying technological features, operational details, uses and applications. Implications for Mobile Operators.
Bitcoin is Still Technology - Presented at Bitcoin World Conference KL - 2014Mark Smalley
Forgot to upload the presentation I gave at the World Bitcoin Conference in KL - it's a real basic introduction to Bitcoin and crypto-currencies from a technological point of view. A lot of images as they give me room to talk :-)
Most people want to jump into & know how to do ICO or participate in it. They trade buzzwords, follow the herd on blockchain & crypto token without knowing where do they really apply. The objective of this is to introduce important concepts that need to be understood before getting into ICO and crypto valuation. All these concepts are introduced gradually through a metaphor then simple mental models followed by a first principle thinking level. This is most useful for entrepreneurs and investors that ought to be thinking about blockchain, ICO & crypto tokens through first principles
Investment Strategies in Bitcoin. Slide deck on Investing and Trading Bitcoin. Introduction on Trading Bitcoin, recommendations on tools and sites as well as descriptions on fundamental and technical analysis.
Bitcoin is a decentralized electronic cash system using peer-to-peer networking to enable payments between parties without relying on mutual trust. It was first described in a paper by Satoshi Nakamoto (widely presumed to be a pseudonym) in 2008. Payments are made in bitcoins (BTC's), which are digital coins issued and transferred by the Bitcoin network.
http://secure.yocoin.org/user/registrationuser.aspx?ref=YC3213228 YOCoin provides a once in a lifetime opportunity, revolutionizing the business world of todays digital economy. The YOCoin concept is born out of the success of the pioneering cryptocurrency, Bitcoin. We make it Possible! YO COIN is more than just a cryptocurrency. To make it successful and unique, we have created a whole concept and universe to make YOCOIN a market leader.
A lecture for a college course -- CNIT 140: Cryptography for Computer Networks at City College San Francisco
Instructor: Sam Bowne
More info: https://samsclass.info/141/141_F17.shtml
All you ever needed to know on bitcoin and blockchainMarco Hauff
Basic introduction into the world of Bitcoin and Blockchain. Handy for everyone that needs to attend a birthday party and wants to join a conversation on this topic. A must for the financial / technology professional.
This talk was presented by Miguel Duarte (http://miguelduarte.pt) at Codebits (VII) (http://codebits.eu).
A video of the talk is available here: http://youtu.be/PgETyozr2cM
There original abstract was as follows:
You've probably heard of Bitcoin, right? Bitcoin is original cryptocurrency which exploded in value in the last few months and paved the way for alt-coins such as Litecoin, Quark or Dogecoin. Currently, 1 bitcoin is worth nearly $1000, which left some of the original investors and miners, with thousands upon thousands of bitcoins, quite rich. Recently, even the Dogecoin community helped fund Jamaica's bobsled team to help go to the Sochi Winter Olympics by donating 30 million dogecoins, or roughly $30,000! What the hell is that all about? This talk aims to explain what cryptocurrencies are, how they work, and how they create value.
Here are some of the topics I intend on covering:
-the advantages of cryptocurrencies;
-the basics of the blockchain;
-how new blocks are mined using proof-of-work algorithms;
-how to mine using CPU, GPU or even ASIC miners;
-differences between Bitcoin's algorithm and scrypt-based alt-coins;
-security considerations;
-an overview of how cryptocurrencies are currently being used in society;
-how cryptocurrencies can change the world's economic landscape.
Confused by some of the terms used on CoinDesk? Here you will find a complete bitcoin 101 that will help you to understand digital currency by explaining commonly used terms and their meanings.
This presentation provide the brief knowledge of Bitcoin. Bitcoin is a cryptocurrency and a payment system invented by an unidentified programmer, or group of programmers, under the name of Satoshi Nakamoto. Bitcoin was introduced on 31 October 2008 to a cryptography mailing list and released as open-source software in 2009. There have been various claims and speculation concerning the identity of Nakamoto, none of which are confirmed. The system is peer-to-peer and transactions take place between users directly, without an intermediary. These transactions are verified by network nodes and recorded in a public distributed ledger called the blockchain. Which uses bitcoin as its unit of account. Since the system works without a central repository or single administrator, the U.S. Treasury categorizes bitcoin as a decentralized virtual currency.
Is Netcoins The Best Place To Buy Bitcoin Canada?Netcoins Canada
Bitcoin is a digital currency that works without any central control or supervision from banks or governments. Instead, it relies on peer-to-peer software and cryptography. And if you are looking up to buy it with Netcoins, let us tell you how it is one of the best places to buy bitcoin in Canada.
This guide is all about explaining Bitcoin and cryptocurrencies in simple terms. Here's what it covers:
Bitcoin is a type of digital money, and cryptocurrency is a digital currency. A few years ago, people didn't know much about these terms, and some thought they were just a passing trend.
What is Bitcoin and How is it related to Satoshi Nakamoto White Paper.pdfSuraj Sharma
Well the terms like bitcoin & block chain are being coined and referred to everywhere over the internet or over any investment or financial platform the reason being its increasing popularity and the mammoth returns that people have made by investing in these avenues.
Although the concept of bitcoin is known to many but still there are many that are confronted with this question that what is a bitcoin and how does it work? so, in this blog I have made a sincere effort to explain the same in the easiest of manner for you to understand this concept. So as we move ahead we will dive in this concept of What is Bitcoin? How is it related to White paper of Satoshi Nakamoto? to understand the basics of bitcoins and how would its future be like.
The term crypto currency is being coined everywhere due to its increased popularity worldwide, it is being looked at with great aspiration to park one’s money for a lucrative and manifold return. One can well imagine the return percentage on his/her investment in bitcoins by the fact that 1 bitcoin was worth $0 in 2009 and it now values at $55,353 (at the time of writing this article).
This means you could have been a millionaire or a billionaire if a reasonable investment was made in bitcoins in 2009 and was to be redeemed now.
Cryptocurrency- A Digital asset as a medium of exchange:
Crypto currency is a digital asset that is designed in such a manner that it offers the benefits of a medium of exchange like any other currency, so you can buy any item in exchange of these digital assets that you possess from the seller that accepts these forms of payments.
These digital assets are stored in computerized databases as they do not exist in physical form, using strong cryptography to secure the transaction records.
Decentralized Cryptocurrency Explained in Easy:
Whenever these digital currencies are minted, mined or created by the originator , the process is said to have exercised a centralized control, however when these are further disseminated to larger groups a decentralized control is said to have exercised. Each cryptocurrency functions through a distributed ledger technology that is typically known as block chain technology that serves as a public financial transaction database.
Although there are several other Cryptocurrencies that exist in the digital world and they too have offered good returns over a period of time, but the major issue involved in these digital currencies is that they are not backed by any of the apex bank of any country nor do they are traded in any banking channel.
Usually these digital currencies or cryptocurrencies that are not backed by any government or banking channel have no intrinsic value and nor do they will have in future.
Their values are derived purely on the basis of market forces of demand and supply and are a private fiat money. The market of these digital assets is highly volatile and have no capping on their price increase or decrease.
Bitcoin – for some people, this may be something making them excited and sleepless while for some others, it may be the first time they have come across such a term.
Bitcoin 101: The Currency, The Network, The CommunityEarthsite
Bitcoin and the underlying technology of cryptocurrency is poised to revolutionize the world of banking and financial equity. Can Bitcoin make it through the volatile startup years and be adopted as a global currency? With an estimated 50,000 businesses now accepting Bitcoin and more than $100 million in venture capital investments, 2014 could be the tipping point for this new form of value exchange.
In this introductory presentation, you'll learn what Bitcoin is, why the technology is revolutionary and how you can get involved in the community. Find out how businesses can save 2-3% on credit card fees and have instant access to a global market. Discover how digital currencies are supporting thriving local economies. Don't miss this opportunity to educate yourself on the fundamentals of Bitcoin and see how you and your business will benefit.
A presentation about cryptocurrency Bitcoin and the technology it is built on: Blockchain. Some info about bitcoin mining, mining pools and Satoshi Nakamoto who is the mysterious inventor of this revolutionary technology.
Similar to Bitcoin digital cash basics svcc 2017 10 001 publish (20)
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
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We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
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All of this illustrated with link prediction over knowledge graphs, but the argument is general.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
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PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
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The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
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Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
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As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
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State of global ICS asset and network exposure
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Major cyber events in 2024
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Bitcoin digital cash basics svcc 2017 10 001 publish
1. Bitcoin
Digital Cash -- The Basics
Some slides from "BitcoinBasics: Bitcoin, Blockchain andBeyond" by itBit education
Donn Lee
7 October 2017
Silicon Valley Code Camp
San Jose, California
5. What is Bitcoin?
BitcoinBasics
5 Bitcoin Basics
Alice Bob
• Currency (symbol: BTC)
• Electronic Cash System
• Internet-based
• Peer-to-Peer
9ecb36561341d18eb654..
6. Why Bitcoin?
BitcoinBasics
Privacy
Transactions are recorded with
pseudonyms called bitcoin addresses.
Open & Borderless
It’s a global network in which anyone
can participate.
Decentralized &
Censorship-resistant
It’s a peer-to-peer network and not under
the control of any organization.
Low Fees & Fast
Any amount, big or small, can be sent in
seconds for $0.10 (or less).
6 Bitcoin Basics
8. FAQs
BitcoinBasics
Who sets the value of bitcoin?
Like other commodities,
bitcoin’s price is set by trading
in open online markets called
exchanges.
Can I send less than 1 bitcoin?
Yes, one bitcoin is divisible to
as little as 0.00000001 BTC,
the smallest unit, which is
called a Satoshi*.
8 Bitcoin Basics
How many bitcoinsare in circulation?
Today, about 15 17 million BTC with a
market cap of ~$3.4B $72B. This will
grow slowly due to mining to a max of
21 million BTC around the year 2140.
How do I get bitcoin?
What is mining?
Covered later in this talk :)
Can I get my sent bitcoinsback?
It’s like sending cash. You cannot get
your bitcoin back unless the other party
chooses to send the bitcoin back to you.
But, no one can invalidate your bitcoin or
“close your account” unless you give-up
control of your bitcoin wallet.
*Named after the creator Satoshi Nakamoto, a pseudonym
12. How Do I ObtainBitcoins?
BitcoinBasics
9 Bitcoin Basics
13. Transactions
Like any currency, Bitcoin can be obtained in
exchange for goods and services rendered.
BitcoinATMs
Making a transaction at a bitcoin ATM is pretty
straightforward. ATM users first verify their bitcoin
wallet by scanning a QR code on their
smartphone. They then insert cash into the ATM
and submit to complete the transaction. The
appropriate amount of bitcoins are then
transferred to their wallet based on the current ex-
change rate.
UGC, work, & games
Get rewards/tips from others for user-generated
content on social networks (eg. Twitter, Reddit)
using micro-payment apps like ChangeTip. Micro-
tasking, gaming, gambling, bitcoin faucets, torrent
seeding, prediction markets, video streaming,
jobs/freelancing, ads, sell goods, your paycheck
bitcoin.
Digital Currency Exchanges
Digital currency exchanges operate similarly to fiat
currency exchanges, allowing investors to buy and
sell Bitcoin at the current market rates. Bitcoins
can be purchased using a variety of fiat currencies
including the Euro, U.S. Dollar and many others.
Mining
Miners are the backbone of the Bitcoin ecosystem,
providing services that help secure the network
and keep it running smoothly (ex. Processing and
facilitating transactions).
Miners are rewarded for their services with Bitcoin
payments. Mining is a competitive process that re-
quires specialized hardware and the ability to
solve complex mathematical algorithms.
BitcoinBasics
10 Bitcoin Basics
Ways to Obtain Bitcoins
14. Brokers & Exchanges
Coinbase
Kraken
LocalBitcoins(person-to-person)
NOTE: Most of these services control your keys in an online
“hot” wallet, and could get hacked or go bankrupt. To take full-
ownership, move your bitcoin to a wallet that you control.
BitcoinBasics
14 Bitcoin Basics
List of exchanges (use at your own risk):
https://exchangewar.info
15.
16. How Do I Store MyBitcoins?
What is a Bitcoin Wallet?
Selecting a wallet is a necessary step in owning and using bitcoins.
Wallets are where your bitcoins are virtually stored and what you use
to facilitatepayments and transactions.
BitcoinBasics
16 Bitcoin Basics
17. Hot vs. ColdWallets
BitcoinBasics
HotWallets
• Connected to the Internet
17 Bitcoin Basics
• Allow for instantaneous
transfer of funds
• Greater ease of use butmore
vulnerable to hacking
Cold Wallets
• Offline wallets that live on a small
hardware device
• More secure, but payment
processmay be more
cumbersome
• Or on paper
20. Keys and Blockchain
BitcoinBasics
20 Bitcoin Basics
Alice Bob
30
19
Alice
Digital Signature
Miners
1b0b0738..
.
50 BTC
1a11ce6238..
Wallet
1 transaction fee
From: 1fb7cc3..
To: 1a11ce6238..
Amount: 50 BTC
Sig: d9cb5fd3c0362..
From: 1a11ce6238..
To: 1b0b0738..
Amount: 30 BTC
Sig: 882afa1ef..
Fee & change address
21. Keys and Blockchain
BitcoinBasics
21 Bitcoin Basics
Alice Bob
30
19
Alice
Digital Signature
Miners
.
50 BTC
1a11ce6238..
Wallet
1 transaction fee
Whoever knows the private
key, can move the bitcoin
22. How Do I Keep My BitcoinsSafe?
BitcoinBasics
BackupWallet
Backup your wallet to your computer,
external hard drive and/or the cloud.
EncryptData
Encrypt your data to add an extra layer
of protection.
Cold Storage
Storing some or all of your wallet data
offline ensures a greater level of security.
UpdateSoftware
Be diligent about updating your wallet
software. Make sure you are always using
the latest version of your wallet.
22 Bitcoin Basics
23. What is Bitcoin Mining?
BitcoinBasics
9 Bitcoin Basics23 Bitcoin Basics
Global Consistency
Validation by miners ensures
there is consensus among all
nodes in the network: an
authoritative distributed ledger.
Computing Competition
Computers operated by miners
perform over 8,000,000
TeraHash/s (cryptographic
computations per sec) for ~10
mins, for each new block of
transactions.
Security
Proof-of-work confirmations
by miners ensures transactions
cannot be altered and bitcoin
cannot be double-spent or
counterfeited.
For-profit Business
Current reward per mined
block is 25 12.5 BTC. Block
reward halves every 4 years.
