MultiChain is an open source platform for private blockchain applications that provides highly configurable permissioned blockchains, fast transaction processing speeds, and decentralized data storage through customizable assets and streams. It offers a flexible way to deploy private blockchains across operating systems and clouds. MultiChain has been used for various use cases including identity management, insurance administration, and enabling liquidity in crowdfunding.
This slidedeck was used at the first Blockchain Vlaanderen meetup in Leuven. It features a live (and open-source) demonstration of two usecases with Multichain.
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.
Explains the motivation for private/permissioned blockchains and their characteristics, particularly in comparison to traditional centralized databases. Lists seven "tomatoes" that people throw at the notion of private blockchains, evaluating which represent valid criticisms and which do not.
Bitcoin and other distributed virtual currencies are revolutionizing how monetary value is stored and exchanged on the Internet. Key opportunities and risks will be described. The two main objectives of this talk will be to explain the underlying blockchain and cryptology technologies that make them work, and to demonstrate PHP recipes for using the web services that enable payment processing, identity validation, and smart contract execution.
This slidedeck was used at the first Blockchain Vlaanderen meetup in Leuven. It features a live (and open-source) demonstration of two usecases with Multichain.
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.
Explains the motivation for private/permissioned blockchains and their characteristics, particularly in comparison to traditional centralized databases. Lists seven "tomatoes" that people throw at the notion of private blockchains, evaluating which represent valid criticisms and which do not.
Bitcoin and other distributed virtual currencies are revolutionizing how monetary value is stored and exchanged on the Internet. Key opportunities and risks will be described. The two main objectives of this talk will be to explain the underlying blockchain and cryptology technologies that make them work, and to demonstrate PHP recipes for using the web services that enable payment processing, identity validation, and smart contract execution.
Blockchain Technology - The Next Superpower By Priyank VaghelaPriyankVaghela
What is Blockchain Technology?
Basics of Blockchain
How Does Blockchain work?
Blockchain Timeline
What Blockchain can store?
What is Bitcoin?
BItcoin vs Blockchain
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.
A brief description of how Blockchain Technology works. It is the technology behind the cryptocurrency. The blockchain is an incorruptible digital ledger of economic transactions that can be programmed to record not just financial transactions but virtually everything of value.
The presentation slides for a blockchain event - All About TenX Cryptopayment Technology, Lightning Network & Bitcoin Mining.
Presenter: Sun Sagong
Venue: Tenx (Singapore)
Date: 07Feb2018
Blockchain is a cutting edge technology to store data publicly in trustless system. This paper describes about how this technology can be used to give a new look to the Internet.
Blockchain overview, use cases, implementations and challengesSébastien Tandel
Most know about Bitcoin, the well-known crypto-currency. Less know the details about the underlying and enabling technology, Blockchain.
Hopefully, this presentation provides enough insights to understand blockchain concepts and why it's perceived to potentially disrupt many market segments, from retail to governments, from finance to health care. At last, I hope to brush fairly the many challenges of this rather new technology.
Slides from my talk at CryptoMountain event in Davos. This is a less technical version of my slides on consensus algorithms for blockchain and distributed ledger technology
Blockchain Technology - The Next Superpower By Priyank VaghelaPriyankVaghela
What is Blockchain Technology?
Basics of Blockchain
How Does Blockchain work?
Blockchain Timeline
What Blockchain can store?
What is Bitcoin?
BItcoin vs Blockchain
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.
A brief description of how Blockchain Technology works. It is the technology behind the cryptocurrency. The blockchain is an incorruptible digital ledger of economic transactions that can be programmed to record not just financial transactions but virtually everything of value.
The presentation slides for a blockchain event - All About TenX Cryptopayment Technology, Lightning Network & Bitcoin Mining.
Presenter: Sun Sagong
Venue: Tenx (Singapore)
Date: 07Feb2018
Blockchain is a cutting edge technology to store data publicly in trustless system. This paper describes about how this technology can be used to give a new look to the Internet.
Blockchain overview, use cases, implementations and challengesSébastien Tandel
Most know about Bitcoin, the well-known crypto-currency. Less know the details about the underlying and enabling technology, Blockchain.
Hopefully, this presentation provides enough insights to understand blockchain concepts and why it's perceived to potentially disrupt many market segments, from retail to governments, from finance to health care. At last, I hope to brush fairly the many challenges of this rather new technology.
Slides from my talk at CryptoMountain event in Davos. This is a less technical version of my slides on consensus algorithms for blockchain and distributed ledger technology
A comparison of blockchain technologies for distributed votingRoderik van der Veer
This slidedeck was used at the third Blockchain Vlaanderen meetup in Antwerp. It explores the currently available Blockchains and their capabilities within the context of voting in Belgium.
This slidedeck was used at the second Blockchain Vlaanderen meetup in Antwerp. It was given as a general introduction into Blockchain to enable newcomers to follow the presentations that followed.
Short term Multi Chain Hydrothermal Scheduling Using Modified Gravitational S...IJARTES
This paper proposes the modified Gravitational
search algorithm (GSA) to solve short term multi chain
hydrothermal scheduling problem while satisfying all
operational and physical constraints. The effect of the valve
point loading has been considered. Gravitational search
algorithm is based on the Newton’s law of gravitation. All
objects attract each other and global movement is towards
the heavier masses .However GSA has certain randomness
in search direction resulting in the weak local search ability.
In modified GSA, a time varying maximum velocity equation
is used which controls the exploration and improves the
convergence rate which strengthens its local search ability
and the quality of the hydrothermal solution.
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.
Introduction to Ethereum Blockchain & Smart ContractThanh Nguyen
The Harvard Business Review (HBR) thinks that Blockchain Technology has to power to keep data safe for consumers and businesses alike; because Blockchain provides a secure and immutable ledger, HBR says it represents the key to taking back privacy of data.
“You can keep certified copies of identity documents, biometric test results, health data, or academic and training certificates online, available at all times, yet safe unless you give away your key. At a whole system level, the database is very secure.”
Stephen Cantrell, kdb+ Developer at Kx Systems “Kdb+: How Wall Street Tech c...Dataconomy Media
Stephen Cantrell, kdb+ Developer at Kx Systems
“Kdb+: How Wall Street Tech can Speed up the World"
You can see some additional notes here:
https://github.com/cantrells/berlin_kdb_demo?files=1
Ronan Corkery, kdb+ developer at Kx Systems: “Kdb+: How Wall Street Tech can ...Dataconomy Media
Ronan Corkery, kdb+ developer at Kx Systems: “Kdb+: How Wall Street Tech can Speed up the World"
Bio:
Ronan Corkery is a kdb+ engineer who has been working with Kx and First Derivatives for the past 4 years. Currently based in Total Gas and Power he spent his first 2 year working with Morgan Stanley.
Abstract:
Ronan's presentation will focus on the vertical industries the formally only finance based technologies Kx offers has been moving into. He will present proven solutions as well as introducing the overall architecture that Kx uses as well as laying out potential opportunities to work with Kx.
Ronan Corkery, kdb+ developer at Kx Systems: “Kdb+: How Wall Street Tech can ...Maya Lumbroso
Ronan Corkery, kdb+ developer at Kx Systems: “Kdb+: How Wall Street Tech can Speed up the World"
Bio:
Ronan Corkery is a kdb+ engineer who has been working with Kx and First Derivatives for the past 4 years. Currently based in Total Gas and Power he spent his first 2 year working with Morgan Stanley.
Abstract:
Ronan's presentation will focus on the vertical industries the formally only finance based technologies Kx offers has been moving into. He will present proven solutions as well as introducing the overall architecture that Kx uses as well as laying out potential opportunities to work with Kx.
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
Unlock decentralization potential by developing an application on Tron blockchain, a transparent and scalable solution. Sara Technologies Inc. is a top-notch technological company in the United States. The company delivers effective tron blockchain development services. Our team of experts are always available to assist you.
Brief overview of technological components of blockchains, cryptocurrencies and tokens, including example applications and decentralized applications in the market.
A broad-ranging introduction into Blockchain, the Mental Models to use to think about its implications (Blockchain as a Database, as a City and as a Continent); and a technical introduction into the key ingredients to build a blockchain as well as dApps.
Jennifer Schaus and Associates hosts a complimentary webinar series on The FAR in 2024. Join the webinars on Wednesdays and Fridays at noon, eastern.
Recordings are on YouTube and the company website.
https://www.youtube.com/@jenniferschaus/videos
Presentation by Jared Jageler, David Adler, Noelia Duchovny, and Evan Herrnstadt, analysts in CBO’s Microeconomic Studies and Health Analysis Divisions, at the Association of Environmental and Resource Economists Summer Conference.
Donate to charity during this holiday seasonSERUDS INDIA
For people who have money and are philanthropic, there are infinite opportunities to gift a needy person or child a Merry Christmas. Even if you are living on a shoestring budget, you will be surprised at how much you can do.
Donate Us
https://serudsindia.org/how-to-donate-to-charity-during-this-holiday-season/
#charityforchildren, #donateforchildren, #donateclothesforchildren, #donatebooksforchildren, #donatetoysforchildren, #sponsorforchildren, #sponsorclothesforchildren, #sponsorbooksforchildren, #sponsortoysforchildren, #seruds, #kurnool
This session provides a comprehensive overview of the latest updates to the Uniform Administrative Requirements, Cost Principles, and Audit Requirements for Federal Awards (commonly known as the Uniform Guidance) outlined in the 2 CFR 200.
With a focus on the 2024 revisions issued by the Office of Management and Budget (OMB), participants will gain insight into the key changes affecting federal grant recipients. The session will delve into critical regulatory updates, providing attendees with the knowledge and tools necessary to navigate and comply with the evolving landscape of federal grant management.
Learning Objectives:
- Understand the rationale behind the 2024 updates to the Uniform Guidance outlined in 2 CFR 200, and their implications for federal grant recipients.
- Identify the key changes and revisions introduced by the Office of Management and Budget (OMB) in the 2024 edition of 2 CFR 200.
- Gain proficiency in applying the updated regulations to ensure compliance with federal grant requirements and avoid potential audit findings.
- Develop strategies for effectively implementing the new guidelines within the grant management processes of their respective organizations, fostering efficiency and accountability in federal grant administration.
ZGB - The Role of Generative AI in Government transformation.pdfSaeed Al Dhaheri
This keynote was presented during the the 7th edition of the UAE Hackathon 2024. It highlights the role of AI and Generative AI in addressing government transformation to achieve zero government bureaucracy
Preliminary findings _OECD field visits to ten regions in the TSI EU mining r...OECDregions
Preliminary findings from OECD field visits for the project: Enhancing EU Mining Regional Ecosystems to Support the Green Transition and Secure Mineral Raw Materials Supply.
Jennifer Schaus and Associates hosts a complimentary webinar series on The FAR in 2024. Join the webinars on Wednesdays and Fridays at noon, eastern.
Recordings are on YouTube and the company website.
https://www.youtube.com/@jenniferschaus/videos
Jennifer Schaus and Associates hosts a complimentary webinar series on The FAR in 2024. Join the webinars on Wednesdays and Fridays at noon, eastern.
Recordings are on YouTube and the company website.
https://www.youtube.com/@jenniferschaus/videos
3. “Blockchains represent a fundamental innovation in
information architecture, enabling a single database to be
directly and safely shared between multiple organizations,
without the need for an intermediary.They promise to
streamline a wide range of use cases in whichorganizations
coordinate their activity via data, whether in financial
services, healthcare, manufacturing orIT.”
Dr Gideon Greenspan, CEO andArchitect, Coin Sciences
Vision
4. “Itrytosteerclearofoverhypingthings…”
R No implementation of functionalities until proven
R No announcement of Beta while there are known issues
R Focused on genuine blockchain use cases, not what is fashionable
Dr Gideon Greenspan, CEO andArchitect, Coin Sciences
Vision
5. 1. Off-the-shelf private blockchains
• Multiplatform opensource
2. Single lightweightexecutable
• No container, No compilation, Nodependencies
3. Focussed on data and assets
MultiChain platform
10. Highly
configurable
R 45+ blockchainparametersto configure
• Block size/time,
• permissioning,
• adminconsensus,
• mining,
• optional native currency
• …
R Bitcoin compatible configuration possible
R Cannot be changed after creation (yet …)
11. R Differenttypes of permissioned actions
• admin, activate
• connect to network,mining
• issue, send, receiveassets
• create,write to astream
R Permissionsenforcedand storedin blockchain
R Change permissions byconsensus
R Anyof these can be made permissionless
R Temporarypermissions based on block range
Permissioned
blockchain
12. R Everyblock digitallysigned bycreator
• Only permissioned parties can “mine”
R Mining diversity, not Proof of Work
• adjustable strictness of the round robin scheme, to
allow for some non-functioning mining nodes
R No need for cryptocurrency as incentive
R Fast confirmation (in private blockchain)
R No risk of central control
Consensus
by mining
diversity
13. Consensus
by mining
diversity
R 0 <= mining diversity<= 1
R #blocks to wait = (#miners* mining diversity)- 1
1
0,5
0
#blocks
to wait
1
1
2
3
4
2 3 4
#nodes with
mining permission
14. Full asset
lifecycle
R Network-level verification
R Per-output transaction model
• multiple assets per output
R Supports full asset lifecycle
• issuance, reissuance, transfer, escrow, atomic exchange and
destruction
R Custom asset metadata fields
• easy access to history of fieldvalues
R Permissioned (issue, send, receive assets)
R ∞ number of assets possible
R Optional native currency
15. General data
storage
R Largeamount of data per transaction
(8 MB, togrow)
R Streams:
• key–value-, identity- and time seriesdata
- digitally signed
- timestamped
- immutable
• permissioned (create, write)
• subscribe to streams
• ∞ number of streams possible
18. Confidentialityin MultiChain
Public key stream*
KEY VALUE
factory 1A1zP1…DivfNa
transporter 1HLoD9…1J3Zb1
supermarket 12c6DS…rzjrJX
asymmetricencryption
symmetricencryption
Access stream*
KEY VALUE
factory_weight [ ]
factory_temperature [ ]
transporter_temperature [ ]
Assetstream
KEY TIMESTAMP PUBLISHER VALUE
id 1481627441 1A1zP1…DivfNa dff5d4…a95284
temperature
1481627693 1A1zP1…DivfNa [-1°]
1481627704 1HLoD9…1J3Zb1 [-3°]
1481627711 1HLoD9…1J3Zb1 [-1°]
weight 1481627441 1A1zP1…DivfNa [5kg]
* items in this stream are also timestamped and have apublisher
19. “No, or at least not yet. At the moment I’m
yet to see a strong use case for permissioned
blockchains which requires a smart contract.”
Dr Gideon Greenspan, CEO andArchitect, Coin Sciences
Smart contracts?
20. “Smart contracts would be implemented in
a stream-like layer on top of the blockchain,
ratherthan in the lowest transactionlevel.”
Dr Gideon Greenspan, CEO andArchitect, Coin Sciences
R No risk at blockchain level
R Only interested nodes subscribe
R Would probably be implemented
as a new stream type “evm”
Smart contracts?
21. Tooling
• MultiChain nodes
• MultiChain Explorer
• MultiChain WebDemo
R Community
• C#, node, php, python, ruby wrapper for MultiChain-RPC
• Docker images
• multichain-address-node, node library for off-node signing
+ address generation
R Bitcoin compatible
• Libraries, explorers, mobile wallets, hardware security devices…
24. R Runs directlyon all common operatingsystems
R Environmentagnostic
• Self-hosted in datacenter
• Public or privatecloud
• Accessed as a service
R API cleanly separates app from chain
R No deep technical skills needed
R Multi-network possible
Deployment
25. R Flexible and easy to use within a “single
solution architecture”
• 45+ blockchain parameters to configure
• Permissions can change overtime
• Gradual transfers of chain stewardship
R Streams: nodes follow their interests
R Custom asset + stream fields
R Nodes added simply and quickly
R Simple API for applications (JSON-RPC)
Flexibility
26. R 8 MB of data per transaction,storedonce
R Millions of addresses,assets, streams
R Nodes process 100–800 tx/second (due Bitcoin
core legacy, working on it)
• Includes signature verification + transaction processing
i.e. real Byzantinetolerance
R Configurable Block time (less than 10 seconds
possible)
Speed and
scalability
27. R ForkedfromBitcoin Core
• $10B+ and over 5 years exposure toInternet
R Full multisignature support
R External key management
• Bitcoin hardware security modules
Security
and risks
31. Crowdfunding
low liquidity,
no established stock exchange
Blockchain
transactions
without ‘trusted’
intermediate party
Bolero Crowdfunding
The “Real*” Blockchain-application
33. R Identity management (largeresourcescompanyin Europe)
• Rapid and ScalableDevelopment
• Lightweight multi-platformsolution
R Insuranceadministration(largepension companyin Europe)
• Support of Decentralised Storage along withassets
• In-node logic (privacy overInsurancepolicies)
R Manymoreunder NDA
35. R MultiChain is an Open PlatformforBlockchainBased
Applications that is OptimizedforHigh Transaction
Efficiencyand DecentralizedStorage,and offers:
Managed
permissions
Rapid
deployment
Unlimited
assets
Data
streams
36. R Private Blockchain: control who connects, reads and writes
R Customise mining: configure diversity, blocksize and frequency
R No native currency needed: due to the private nature
R Application specific chains: no irrelevant data
R Multiple asset support: from currency to financial instruments to …
R Decentralised storage: ideal for data sharing, timestamping and
encrypted archiving