Metadata in the Blockchain: The OP_RETURN ExplosionCoin Sciences Ltd
With the addition of OP_RETURN outputs in version 0.9, it became possible to attach arbitrary pieces of information to bitcoin transactions. This turns bitcoin into a low-level communications protocol, just like TCP/IP, on which many new applications can be built.
Despite its powerful features, bitcoin is also limited, costly and inefficient compared to TCP/IP. After discussing which sorts of applications make this trade-off worthwhile, we talk about CoinSpark, a new open source protocol for enhancing bitcoin transactions, which makes extensive use of OP_RETURNs.
MultiChain technology allows organizations to establish private blockchains using a simple API and command line interface. It ensures transactions only occur between validated participants of the chain to maintain stability and control. The mining process is made safer through proof of work and costs. Handshaking occurs when nodes connect and exchange permission lists, aborting if results are unsatisfactory. Mining diversity establishes a rotation schedule for accurate block generation across permitted miners. Transaction fees and block incentives can be configured in the params.dat file along with other chain settings.
- Modern caching allows for security by using VCL (Varnish Configuration Language) for advanced caching logic and client identification.
- Client identification involves classifying clients based on information like cookies, local storage, or encryption/hashes of values. This allows origin servers to dynamically vary responses based on the identified client.
- Content access control lists (ACLs) can be applied to cached responses based on the identified client information, and client invalidation involves expiring client identification tokens or invalidating cached responses based on session identifiers.
Hyperledger Fabric is an open-source blockchain framework that allows for the creation of permissioned distributed ledgers through the use of smart contracts and pluggable consensus mechanisms. It uses a modular architecture including ordering services, membership services, peer-to-peer gossip, and smart contracts to validate transactions. Permissioned blockchains like Hyperledger Fabric provide identity management that allows known participants to securely conduct transactions while permissionless blockchains are open for anyone to participate anonymously.
Metadata in the Blockchain: The OP_RETURN ExplosionCoin Sciences Ltd
With the addition of OP_RETURN outputs in version 0.9, it became possible to attach arbitrary pieces of information to bitcoin transactions. This turns bitcoin into a low-level communications protocol, just like TCP/IP, on which many new applications can be built.
Despite its powerful features, bitcoin is also limited, costly and inefficient compared to TCP/IP. After discussing which sorts of applications make this trade-off worthwhile, we talk about CoinSpark, a new open source protocol for enhancing bitcoin transactions, which makes extensive use of OP_RETURNs.
MultiChain technology allows organizations to establish private blockchains using a simple API and command line interface. It ensures transactions only occur between validated participants of the chain to maintain stability and control. The mining process is made safer through proof of work and costs. Handshaking occurs when nodes connect and exchange permission lists, aborting if results are unsatisfactory. Mining diversity establishes a rotation schedule for accurate block generation across permitted miners. Transaction fees and block incentives can be configured in the params.dat file along with other chain settings.
- Modern caching allows for security by using VCL (Varnish Configuration Language) for advanced caching logic and client identification.
- Client identification involves classifying clients based on information like cookies, local storage, or encryption/hashes of values. This allows origin servers to dynamically vary responses based on the identified client.
- Content access control lists (ACLs) can be applied to cached responses based on the identified client information, and client invalidation involves expiring client identification tokens or invalidating cached responses based on session identifiers.
Hyperledger Fabric is an open-source blockchain framework that allows for the creation of permissioned distributed ledgers through the use of smart contracts and pluggable consensus mechanisms. It uses a modular architecture including ordering services, membership services, peer-to-peer gossip, and smart contracts to validate transactions. Permissioned blockchains like Hyperledger Fabric provide identity management that allows known participants to securely conduct transactions while permissionless blockchains are open for anyone to participate anonymously.
2019 03 18_kenneth_simplebitcoinwebsite Hu Kenneth
This document discusses Bitcoin Improvement Proposals (BIPs) and various Bitcoin wallet concepts. It describes three types of BIPs - standards track, informational, and process BIPs. It also discusses several important BIPs related to Bitcoin wallets, including BIP-32 which describes hierarchical deterministic wallets, BIP-39 which specifies mnemonic code for generating deterministic wallets, and BIP-44 which defines a logical hierarchy for deterministic wallets. Additionally, it covers other wallet-related topics like brain wallets, wallet import format, private/public keys, and signing/verifying messages.
This document provides an overview of blockchain technology and its applications for business. It defines blockchain as a distributed ledger that records transactions in grouped blocks chained together using cryptography. Blockchains can be public, private, or consortium. For business, blockchain enables shared ledgers and smart contracts to facilitate transactions across organizations more efficiently while reducing costs, risks of tampering, and increasing trust through transparency.
This document provides an introduction to decentralised exchanges (DEX). It begins by defining centralised exchanges and issues with them like security risks and high fees. It then defines DEX as peer-to-peer exchanges that occur directly between users without a third party, allowing users to control their own funds. Key benefits of DEX include lower fees and security, while issues include difficulty of use and low liquidity. Examples of DEX architectures and workflows are provided, as well as examples of specific DEX like 0x, Kyber, and AirSwap. The document concludes with a thank you and invitation for questions.
The Payment Gateway is one of the most crucial features of engineering undertaken at CAKE LABS, and in this Innovation Session, Dinidu Bathiya and Dumindu Karunathilaka from the Software team talk about the process of keeping payments running via Payment Gateway.
Presentation from a talk given by Diogo Monteiro (@diogogmt) at a recent NATS Meetup in Toronto. The talk covered why NATS is a simple, fast method for microservices communication, and provides some latency benchmarks from Diogo's design of a solution using NATS.
You can learn more about NATS at http://www.nats.io
The document discusses distributed blockchain processing and some of the challenges involved. It addresses issues like race conditions when sharing resources across distributed systems and consistency problems that can arise. It proposes using a distributed hash table (DHT) combined with a blockchain to help control consistency across nodes. This could provide benefits like uniformly distributing transactions across nodes, weakening the dependency of execution time on the number of nodes, enabling real-time transactions, and allowing the blockchain to be independently validated. The approach aims to help address issues like consistency when replicating data or operations over distributed resources.
The document discusses how XML Key Management Services (XKMS) provides a standard for managing public keys and certificates through web services, allowing for simpler and more interoperable security such as XML signatures and encryption for web services. XKMS acts as a central repository for public keys that can be accessed through web methods, reducing the complexity and cost of traditional PKI solutions while still enabling secure authentication, encryption, and validation of signatures. The paper argues that XKMS provides the foundation for secure data exchanges by integrating public key management into a network's authentication and authorization systems.
Introduction to Blockchain and CryptocurrenciesNikhil D Prince
This document provides an introduction to blockchain and cryptocurrencies. It discusses the history of blockchain from 1991 when it was first described to 2009 when Bitcoin launched. It defines blockchain as an immutable time-stamped series of records distributed and managed by a peer-to-peer network. It also discusses the differences between centralized, decentralized, and distributed networks. The document outlines different types of blockchains and applications of blockchain like payments, supply chain monitoring, and medical recordkeeping. It notes both benefits like cost effectiveness and reduced reliance on trusted parties, as well as challenges like energy consumption and inability to change past data.
This document discusses the PrepEID solution which allows event visitors to pay electronically using their eID cards. It proposes a client-server architecture with an API and database on the server side. The demo shows a card reader interacting with the client-side software. The server-side uses ASP.NET, SQL Server, and authentication tokens. Future plans include expanded hosting options and statistics. Testing used a hypervisor with redundant VMs and networks. The goals of traceability and statistics for organizers were largely met through teamwork in developing the client and server software.
Blockchain – The future of Internet by Moinur RahmanMyNOG
The document discusses how blockchain technology can be applied to make the internet more decentralized and secure. It describes how blockchain could be used to improve DNS, data storage, traffic routing, SDN, IoT, and create a more decentralized internet through projects like BlockStack. The goal is to build a censorship-resistant internet that protects privacy and freedom of speech through decentralization instead of relying on centralized systems and entities that are vulnerable to attacks and government control.
Распределенный blockchain процессинг / Алексей Трошичев (QiWi, Rakuten)Ontico
Проблема race condition в распределенных системах и существующие способы решения. Какие системы требуют строгой консистентности и почему?
Что такое blockchain, как сделать процесс его создания распределенным и как на базе него построить масштабируемую систему учета.
Горизонтальное масштабирование мультимастера до сотни узлов со строгой консистентностью без линейной потери скорости изменений.
20180714 workshop - Ethereum decentralized application with truffle frameworkHu Kenneth
This document discusses Ethereum development tools and concepts. It begins by outlining upcoming events focused on Ethereum accounts, the Truffle framework, and decentralized apps. It then describes development environments using Remix, MetaMask, Solidity, and Ganache. It explains Ethereum accounts, including externally owned accounts and contract accounts. It covers using Truffle for compiling, deploying, testing, and interacting with smart contracts. Finally, it provides an overview of building a pet shop decentralized app.
The document introduces Luniverse, a blockchain service platform that aims to help companies focus on their original services by providing powerful development and operating tools. It discusses limitations of current blockchain platforms like high costs, lack of tools, and difficulties developing and operating services. Luniverse provides scalable side chains, configurable token services, security assessments, convenient wallets, DEX listing support, and operating tools to address these issues. It has a governance model and aims to form partnerships with companies in various industries to build on the platform.
HTTPS provides secure communication over HTTP using encryption and authentication, protecting the privacy and integrity of data exchanged between a client and server. It operates at the transport layer of the OSI model, using port 443 instead of the insecure port 80 for regular HTTP. The handshake process establishes a secure connection through public-private key encryption, digital certificates, and optionally symmetric encryption with a shared key.
HTTP is a world changing protocol that still sustain as a backbone of internet protocol. HTTPS is the secure version of HTTP with an additional layer TLS/SSL. This presentation will provide an overview concept of how HTTPS works and why HTTPS is not a different protocol than HTTP.
Real-time Communication using SignalR and cloudRadu Vunvulea
This document discusses using SignalR to enable real-time communication between clients and servers. SignalR allows for bidirectional communication through features like hubs and persistent connections. It works across browsers and devices by using techniques like websockets, server-sent events, and long polling. SignalR provides security through connection tokens and supports performance at scale through backplanes like Azure Service Bus. In conclusion, SignalR is a library that enables real-time applications by facilitating client-to-server and server-to-client communication with broadcasting capabilities and low latency.
Not So Anonymous - Deanonymization of Blockchain UsersJohannes Ahlmann
All transactions are public in most cryptocurrencies, making it is possible to deanonymize bitcoin wallet holders and learn details about their identity and their transactions.
This can be done through transaction graph analysis of on-chain transactions, and through realtime network analysis of IPs and node messages.
We will discuss how deanonymization is performed, how to reduce the risk on popular networks like Bitcoin, and what alternatives exist for more anonymity in cryptos.
Cryptocurrency mining is the process of verifying transactions for cryptocurrencies and adding them to the blockchain digital ledger. It helps secure the blockchain against attacks while also having the potential to make money depending on the coin being mined. Mining can help realize the potential of blockchain technology and depending on the coin, can be relatively cheap to get started.
This document discusses various aspects of microservices architecture including decomposition, data management, deployment, testing, observability, communication, security, and user interfaces. It recommends decomposing monolithic applications by business capability or subdomain, having a separate database per service, deploying single services on containers or VMs, implementing service integration contract testing and component testing in isolation, and using centralized logging, monitoring, and tracing. It also covers API gateways, service discovery, asynchronous messaging vs RPC-style communication, circuit breakers, cross-cutting concerns, and passing access tokens from gateways to services.
How Blockchain can Revolutionize Criminal InvestigationRakeshJain695752
Cybercriminals have found a dark protection in the digital age. Conventional techniques for monitoring illicit activities frequently find it difficult to keep up with the disguise and speed of internet transactions. However, blockchain technology is a cutting-edge innovation that has the potential to revolutionize law enforcement.
Blockchain is a digital ledger that powers cryptocurrencies like Bitcoin. All transactions are safely and chronologically stored in blocks, with each block being connected to the previous one. This produces a visible, tamper-proof, and unchangeable record.
2019 03 18_kenneth_simplebitcoinwebsite Hu Kenneth
This document discusses Bitcoin Improvement Proposals (BIPs) and various Bitcoin wallet concepts. It describes three types of BIPs - standards track, informational, and process BIPs. It also discusses several important BIPs related to Bitcoin wallets, including BIP-32 which describes hierarchical deterministic wallets, BIP-39 which specifies mnemonic code for generating deterministic wallets, and BIP-44 which defines a logical hierarchy for deterministic wallets. Additionally, it covers other wallet-related topics like brain wallets, wallet import format, private/public keys, and signing/verifying messages.
This document provides an overview of blockchain technology and its applications for business. It defines blockchain as a distributed ledger that records transactions in grouped blocks chained together using cryptography. Blockchains can be public, private, or consortium. For business, blockchain enables shared ledgers and smart contracts to facilitate transactions across organizations more efficiently while reducing costs, risks of tampering, and increasing trust through transparency.
This document provides an introduction to decentralised exchanges (DEX). It begins by defining centralised exchanges and issues with them like security risks and high fees. It then defines DEX as peer-to-peer exchanges that occur directly between users without a third party, allowing users to control their own funds. Key benefits of DEX include lower fees and security, while issues include difficulty of use and low liquidity. Examples of DEX architectures and workflows are provided, as well as examples of specific DEX like 0x, Kyber, and AirSwap. The document concludes with a thank you and invitation for questions.
The Payment Gateway is one of the most crucial features of engineering undertaken at CAKE LABS, and in this Innovation Session, Dinidu Bathiya and Dumindu Karunathilaka from the Software team talk about the process of keeping payments running via Payment Gateway.
Presentation from a talk given by Diogo Monteiro (@diogogmt) at a recent NATS Meetup in Toronto. The talk covered why NATS is a simple, fast method for microservices communication, and provides some latency benchmarks from Diogo's design of a solution using NATS.
You can learn more about NATS at http://www.nats.io
The document discusses distributed blockchain processing and some of the challenges involved. It addresses issues like race conditions when sharing resources across distributed systems and consistency problems that can arise. It proposes using a distributed hash table (DHT) combined with a blockchain to help control consistency across nodes. This could provide benefits like uniformly distributing transactions across nodes, weakening the dependency of execution time on the number of nodes, enabling real-time transactions, and allowing the blockchain to be independently validated. The approach aims to help address issues like consistency when replicating data or operations over distributed resources.
The document discusses how XML Key Management Services (XKMS) provides a standard for managing public keys and certificates through web services, allowing for simpler and more interoperable security such as XML signatures and encryption for web services. XKMS acts as a central repository for public keys that can be accessed through web methods, reducing the complexity and cost of traditional PKI solutions while still enabling secure authentication, encryption, and validation of signatures. The paper argues that XKMS provides the foundation for secure data exchanges by integrating public key management into a network's authentication and authorization systems.
Introduction to Blockchain and CryptocurrenciesNikhil D Prince
This document provides an introduction to blockchain and cryptocurrencies. It discusses the history of blockchain from 1991 when it was first described to 2009 when Bitcoin launched. It defines blockchain as an immutable time-stamped series of records distributed and managed by a peer-to-peer network. It also discusses the differences between centralized, decentralized, and distributed networks. The document outlines different types of blockchains and applications of blockchain like payments, supply chain monitoring, and medical recordkeeping. It notes both benefits like cost effectiveness and reduced reliance on trusted parties, as well as challenges like energy consumption and inability to change past data.
This document discusses the PrepEID solution which allows event visitors to pay electronically using their eID cards. It proposes a client-server architecture with an API and database on the server side. The demo shows a card reader interacting with the client-side software. The server-side uses ASP.NET, SQL Server, and authentication tokens. Future plans include expanded hosting options and statistics. Testing used a hypervisor with redundant VMs and networks. The goals of traceability and statistics for organizers were largely met through teamwork in developing the client and server software.
Blockchain – The future of Internet by Moinur RahmanMyNOG
The document discusses how blockchain technology can be applied to make the internet more decentralized and secure. It describes how blockchain could be used to improve DNS, data storage, traffic routing, SDN, IoT, and create a more decentralized internet through projects like BlockStack. The goal is to build a censorship-resistant internet that protects privacy and freedom of speech through decentralization instead of relying on centralized systems and entities that are vulnerable to attacks and government control.
Распределенный blockchain процессинг / Алексей Трошичев (QiWi, Rakuten)Ontico
Проблема race condition в распределенных системах и существующие способы решения. Какие системы требуют строгой консистентности и почему?
Что такое blockchain, как сделать процесс его создания распределенным и как на базе него построить масштабируемую систему учета.
Горизонтальное масштабирование мультимастера до сотни узлов со строгой консистентностью без линейной потери скорости изменений.
20180714 workshop - Ethereum decentralized application with truffle frameworkHu Kenneth
This document discusses Ethereum development tools and concepts. It begins by outlining upcoming events focused on Ethereum accounts, the Truffle framework, and decentralized apps. It then describes development environments using Remix, MetaMask, Solidity, and Ganache. It explains Ethereum accounts, including externally owned accounts and contract accounts. It covers using Truffle for compiling, deploying, testing, and interacting with smart contracts. Finally, it provides an overview of building a pet shop decentralized app.
The document introduces Luniverse, a blockchain service platform that aims to help companies focus on their original services by providing powerful development and operating tools. It discusses limitations of current blockchain platforms like high costs, lack of tools, and difficulties developing and operating services. Luniverse provides scalable side chains, configurable token services, security assessments, convenient wallets, DEX listing support, and operating tools to address these issues. It has a governance model and aims to form partnerships with companies in various industries to build on the platform.
HTTPS provides secure communication over HTTP using encryption and authentication, protecting the privacy and integrity of data exchanged between a client and server. It operates at the transport layer of the OSI model, using port 443 instead of the insecure port 80 for regular HTTP. The handshake process establishes a secure connection through public-private key encryption, digital certificates, and optionally symmetric encryption with a shared key.
HTTP is a world changing protocol that still sustain as a backbone of internet protocol. HTTPS is the secure version of HTTP with an additional layer TLS/SSL. This presentation will provide an overview concept of how HTTPS works and why HTTPS is not a different protocol than HTTP.
Real-time Communication using SignalR and cloudRadu Vunvulea
This document discusses using SignalR to enable real-time communication between clients and servers. SignalR allows for bidirectional communication through features like hubs and persistent connections. It works across browsers and devices by using techniques like websockets, server-sent events, and long polling. SignalR provides security through connection tokens and supports performance at scale through backplanes like Azure Service Bus. In conclusion, SignalR is a library that enables real-time applications by facilitating client-to-server and server-to-client communication with broadcasting capabilities and low latency.
Not So Anonymous - Deanonymization of Blockchain UsersJohannes Ahlmann
All transactions are public in most cryptocurrencies, making it is possible to deanonymize bitcoin wallet holders and learn details about their identity and their transactions.
This can be done through transaction graph analysis of on-chain transactions, and through realtime network analysis of IPs and node messages.
We will discuss how deanonymization is performed, how to reduce the risk on popular networks like Bitcoin, and what alternatives exist for more anonymity in cryptos.
Cryptocurrency mining is the process of verifying transactions for cryptocurrencies and adding them to the blockchain digital ledger. It helps secure the blockchain against attacks while also having the potential to make money depending on the coin being mined. Mining can help realize the potential of blockchain technology and depending on the coin, can be relatively cheap to get started.
This document discusses various aspects of microservices architecture including decomposition, data management, deployment, testing, observability, communication, security, and user interfaces. It recommends decomposing monolithic applications by business capability or subdomain, having a separate database per service, deploying single services on containers or VMs, implementing service integration contract testing and component testing in isolation, and using centralized logging, monitoring, and tracing. It also covers API gateways, service discovery, asynchronous messaging vs RPC-style communication, circuit breakers, cross-cutting concerns, and passing access tokens from gateways to services.
How Blockchain can Revolutionize Criminal InvestigationRakeshJain695752
Cybercriminals have found a dark protection in the digital age. Conventional techniques for monitoring illicit activities frequently find it difficult to keep up with the disguise and speed of internet transactions. However, blockchain technology is a cutting-edge innovation that has the potential to revolutionize law enforcement.
Blockchain is a digital ledger that powers cryptocurrencies like Bitcoin. All transactions are safely and chronologically stored in blocks, with each block being connected to the previous one. This produces a visible, tamper-proof, and unchangeable record.
How Blockchain can Revolutionize Criminal InvestigationRakeshJain695752
Cybercriminals have found a dark protection in the digital age. Conventional techniques for monitoring illicit activities frequently find it difficult to keep up with the disguise and speed of internet transactions. However, blockchain technology is a cutting-edge innovation that has the potential to revolutionize law enforcement.
Blockchain is a digital ledger that powers cryptocurrencies like Bitcoin. All transactions are safely and chronologically stored in blocks, with each block being connected to the previous one. This produces a visible, tamper-proof, and unchangeable record.
Blockchain and BPM - Reflections on Four Years of Research and ApplicationsIngo Weber
In this keynote, delivered at the Blockchain Forum of BPM 2019, I summarized and reflected on research on BPM and blockchain over the last four years, including model-driven engineering, process execution, and analysis and process mining. I also covered selected use cases and applications, as well as recent insights on adoption. The keynote closed with a discussion of open research questions.
This document discusses private blockchains and how they differ from public blockchains. It explains that private blockchains are permissioned shared databases that use blockchain technology like cryptography and consensus algorithms to provide trust between entities that have limited trust. While they don't have the same properties as public blockchains like immutability and anonymity, private blockchains can enable use cases like financial settlement, provenance tracking, and interorganizational record keeping where a centralized database is not ideal due to lack of trust or need for disintermediation. The document addresses criticisms of private blockchains and blockchain technology in general. It also introduces the MultiChain platform for deploying private blockchains.
This introductory session for the security model of blockchain will cover the 101 of blockchain technology, how transactions work and the use of cryptography for securing the distributed ledger, private and public keys, multisignature and review one of the hacks Ethereum has been exposed to, the parity wallet hack.
Getting Started in Blockchain Security and Smart Contract AuditingBeau Bullock
Why is blockchain security important?
Blockchain usage has exploded since the Bitcoin whitepaper was first published in 2008. Many applications rely on this technology for increased trust and privacy, where they would otherwise be absent from a centralized system.
The ecosystem surrounding blockchain technology is large, complex, and has many moving pieces. Exchanges exist where users can transact various cryptocurrencies, NFTs, and tokens. Smart contracts can be written to programmatically apply behavior to blockchain transactions. Decentralized Finance (DeFi) markets exist where users can swap tokens without needing to sign up for an account.
All of these pieces are prone to vulnerabilities, and with blockchain being at the forefront of emerging technology new issues are being found daily.
In this Black Hills Information Security (BHIS) webcast, we'll use case studies about recent blockchain hacks to introduce the underlying issues that occur in writing/engineering smart contracts that have ultimately lead to the loss of millions of dollars to attackers.
This document provides an overview of cryptocurrency, including:
- A brief history of cryptocurrency from early attempts in the 1990s to Bitcoin's creation in 2009.
- An explanation of how cryptocurrency uses blockchain technology to enable secure and decentralized transactions without intermediaries.
- Descriptions of cryptocurrency mining, popular cryptocurrencies like Bitcoin and Ethereum, and cryptocurrency exchanges.
- Discussions of the advantages of cryptocurrency such as decentralization and security, and the disadvantages like volatility and energy consumption.
- A conclusion that cryptocurrency has potential benefits but also risks that require careful consideration.
This document provides an overview of cryptocurrency, including:
- A brief history of cryptocurrency from early attempts in the 1990s to Bitcoin's creation in 2009.
- An explanation of how cryptocurrency uses blockchain technology to enable secure and decentralized transactions.
- Descriptions of cryptocurrency mining, popular cryptocurrencies like Bitcoin and Ethereum, cryptocurrency exchanges, and advantages and disadvantages of cryptocurrency.
Introduction to Blockchain and Smart ContractsSaad Zaher
Blockchain & Smart Contracts! This document provides an introduction to blockchain and smart contracts. It discusses what a blockchain is, why many blockchains exist, consensus algorithms like proof of work and proof of stake, public versus private blockchains, smart contracts and how they work, examples of successful smart contracts, potential use cases, and CIT blockchain projects including Catena which provides blockchain as a service and an iRobot proof of concept.
here we prepared a presentation on digital currency.amanpandey7656
- Cryptocurrency is a digital or virtual currency that uses cryptography to secure transactions and control the creation of new units of currency. There are over 8,800 cryptocurrencies currently available.
- Some key characteristics of cryptocurrencies include their use of algorithms, different trading methods, and considerations like market capitalization and acceptance by retailers. Popular cryptocurrencies include Bitcoin, Ethereum, Ripple, and Litecoin.
- Cryptocurrencies offer advantages like fast and cheap transactions, easy use, transparency, and decentralization without a central authority. However, they also face limitations such as price volatility, scalability issues, and lack of widespread acceptance and consumer protections.
This document discusses blockchain technology and its potential applications. It begins by explaining key concepts of blockchain like distributed ledgers, cryptography, consensus models, and smart contracts. It then outlines several potential use cases for blockchain across different industries like financial services, property, government services, and the internet of things. Finally, it discusses factors that will influence the future of blockchain like interoperability, scalability, and security.
6
4
key
concepts
of blockchain
-‐
Distributed shared
ledgers
•
Group of
replicated
logs/databases (nodes)
•
Transactions distributed in
blocks
•
All
nodes hold
all
transactions
•
Parties
identified
with public key (=
anonymised
)
•
Accessibility
of transactions depending on
blockchain
implementation
•
Resilient
for failure of one or more nodes
•
Group of nodes operate
tamper proof
This document discusses blockchain technology and its potential applications. It begins by explaining key concepts of blockchain like distributed ledgers, cryptography, consensus models, and smart contracts. It then outlines several potential use cases for blockchain across different industries like financial services, property, government services, and the internet of things. Finally, it discusses factors that will influence the future of blockchain like interoperability, scalability, and security.
Blockchain is a distributed ledger that records transactions in chronological order in digitized blocks. Each block contains a cryptographic hash of the previous block, linking blocks together in a chain. The blockchain relies on a peer-to-peer network of computers to verify transactions without a central authority. Blockchain provides an accurate, permanent record of all transactions that have occurred on the network. Key features include decentralization, transparency, and security without the need for intermediaries.
A Look Into Emerging Security Issues Within Cryptocurrency EcosystemsBeau Bullock
This presentation covers the basics of what cryptocurrencies are, some major hacks, and a walk through of vulnerabilities emerging from cryptocurrency ecosystems.
A Look Into Emerging Security Issues Within Cryptocurrency EcosystemsBeau Bullock
This presentation covers the basics of what cryptocurrencies are, some major hacks, and a walk through of vulnerabilities emerging from cryptocurrency ecosystems.
Security Considerations for Microservices and Multi cloudNeelkamal Gaharwar
These slides contains my notes on what are the security consideration w.r.t Micro services and Multi Cloud. I am still working on this part. It is just a comprehension of whatever I have studied so far.
Malibou Pitch Deck For Its €3M Seed Roundsjcobrien
French start-up Malibou raised a €3 million Seed Round to develop its payroll and human resources
management platform for VSEs and SMEs. The financing round was led by investors Breega, Y Combinator, and FCVC.
Most important New features of Oracle 23c for DBAs and Developers. You can get more idea from my youtube channel video from https://youtu.be/XvL5WtaC20A
How Can Hiring A Mobile App Development Company Help Your Business Grow?ToXSL Technologies
ToXSL Technologies is an award-winning Mobile App Development Company in Dubai that helps businesses reshape their digital possibilities with custom app services. As a top app development company in Dubai, we offer highly engaging iOS & Android app solutions. https://rb.gy/necdnt
E-Invoicing Implementation: A Step-by-Step Guide for Saudi Arabian CompaniesQuickdice ERP
Explore the seamless transition to e-invoicing with this comprehensive guide tailored for Saudi Arabian businesses. Navigate the process effortlessly with step-by-step instructions designed to streamline implementation and enhance efficiency.
8 Best Automated Android App Testing Tool and Framework in 2024.pdfkalichargn70th171
Regarding mobile operating systems, two major players dominate our thoughts: Android and iPhone. With Android leading the market, software development companies are focused on delivering apps compatible with this OS. Ensuring an app's functionality across various Android devices, OS versions, and hardware specifications is critical, making Android app testing essential.
Microservice Teams - How the cloud changes the way we workSven Peters
A lot of technical challenges and complexity come with building a cloud-native and distributed architecture. The way we develop backend software has fundamentally changed in the last ten years. Managing a microservices architecture demands a lot of us to ensure observability and operational resiliency. But did you also change the way you run your development teams?
Sven will talk about Atlassian’s journey from a monolith to a multi-tenanted architecture and how it affected the way the engineering teams work. You will learn how we shifted to service ownership, moved to more autonomous teams (and its challenges), and established platform and enablement teams.
Project Management: The Role of Project Dashboards.pdfKarya Keeper
Project management is a crucial aspect of any organization, ensuring that projects are completed efficiently and effectively. One of the key tools used in project management is the project dashboard, which provides a comprehensive view of project progress and performance. In this article, we will explore the role of project dashboards in project management, highlighting their key features and benefits.
E-commerce Development Services- Hornet DynamicsHornet Dynamics
For any business hoping to succeed in the digital age, having a strong online presence is crucial. We offer Ecommerce Development Services that are customized according to your business requirements and client preferences, enabling you to create a dynamic, safe, and user-friendly online store.
Artificia Intellicence and XPath Extension FunctionsOctavian Nadolu
The purpose of this presentation is to provide an overview of how you can use AI from XSLT, XQuery, Schematron, or XML Refactoring operations, the potential benefits of using AI, and some of the challenges we face.
Everything You Need to Know About X-Sign: The eSign Functionality of XfilesPr...XfilesPro
Wondering how X-Sign gained popularity in a quick time span? This eSign functionality of XfilesPro DocuPrime has many advancements to offer for Salesforce users. Explore them now!
The Key to Digital Success_ A Comprehensive Guide to Continuous Testing Integ...kalichargn70th171
In today's business landscape, digital integration is ubiquitous, demanding swift innovation as a necessity rather than a luxury. In a fiercely competitive market with heightened customer expectations, the timely launch of flawless digital products is crucial for both acquisition and retention—any delay risks ceding market share to competitors.
Using Query Store in Azure PostgreSQL to Understand Query PerformanceGrant Fritchey
Microsoft has added an excellent new extension in PostgreSQL on their Azure Platform. This session, presented at Posette 2024, covers what Query Store is and the types of information you can get out of it.
2. CredaCash Vision/Goals
• Cryptocurrency & blockchain with global scale & adoption
• Equals or exceeds the Visa network:
• Speed, finality, massive scalability
• Convenience, ease-of-use, reliability
• Protection against fraud, theft, misuse
• Resistant to malicious attack and denial-of-service
• Maintain benefits of cryptocurrency:
• Peer-to-peer
• Private
• Unpermissioned
• Low cost
• Governed by voluntary consensus
• Sustainable and environmentally-friendly
CredaCash™ https://credacash.com
3. Ideal Currency Attributes
Intrinsic
• Easy, fast and inexpensive to:
– store
– transport
– authenticate
– convey
– keep private
• Resistant to:
– damage
– decay
– loss
– theft
– extortion
• Fungible (all units are indistinguishable)
• Limited supply balances demand at a
reasonably high value
• Divisible down to nominal units
• Expensive to produce or counterfeit
– costs same or more than the value itself
Extrinsic
• Stable value
• Readily available
• Widely offered
• Widely accepted (liquid)
• Widely used (network effect)
• Widespread infrastructure for transport,
transfer, storage, etc.
• User knowledge, understanding, comfort,
habit of using
• Legal
• Trusted
• Good reputation
CredaCash™ https://credacash.com
4. CredaCash Blockchain
• A new blockchain implementation that:
– Clears transactions in 5-10 seconds
– Cleared transactions cannot be reversed
– Uses a form of Byzantine Consensus
• Can be made more secure than Proof-of-Work
• Faster, more efficient & environmental
• Currently permissioned witnesses
• Future unpermissioned Delegated Proof-of-Stake?
– Single blockchain supports 1000+ transactions/sec
• Future multiple blockchains for massive scalability?
CredaCash™ https://credacash.com
5. CredaCash Currency
• Completely private and fungible
• Uses mathematics similar to Zcash, but
CredaCash is much faster and more efficient
– 5 seconds and 70 MB vs 2 minutes and 1.5 GB
• All transactions are completely private
– Source of funds, destination of funds, amounts
– Does not mix public and private transactions (that
leads to privacy vulnerabilities)
• Tokens have no history and amounts are private
CredaCash™ https://credacash.com
6. CredaCash Advanced Features
• Tokenized assets on same blockchain
– A single transaction can include both assets and currency
– Asset id’s kept private; indistinguishable from currency
• Multi-secrets (like multi-signature)
– Number of secrets required and used kept completely private
– Indistinguishable from “normal” transactions
• Hierarchy of secrets:
– Master secret (in offline storage), spend secrets, trustee secrets,
monitor secrets, receive secret
• Transaction lock times
– Theft prevention; atomic transactions; payment channels
• Acceptance required flag
CredaCash™ https://credacash.com
7. CredaCash Status (cont)
• Software written from ground up in C/C++
– 3 years in development
• Implements:
– Peer-to-peer network for fast transaction & block
propagation
– Transaction validation & blockchain assembly
– Transaction server for lightweight clients
• Runs under Windows & Linux, including ARM
• Extensively tested
• Still in progress: Bitcoin-compatible RPC wallet
CredaCash™ https://credacash.com
8. CredaCash Launch
• Launching network and currency this fall
• Will launch as a fully-developed “utility token”
• Bulk of currency will go to a non-profit
Foundation
• Opportunity TBA to get involved in currency
mint
• Other opportunities to get involved TBA/TBD
• Subscribe to our newsletter for updates
CredaCash™ https://credacash.com