“Technical Intro to Blockhain” by Yurijs Pimenovs from Paybis at CryptoCurren...Dace Barone
He will give an introduction talk about Blockchain technology technical aspects like cryptography, protocols, APIs and scripting with focus on explaining how Bitcoin and other blockchain works and what they consist of.
Yurijs is a Chief Technical Officer at Paybis, blogger at coinside.ru , blockchain enthusiast since 2011.
ArcBlock Developers GraphQL Cheat Sheet for OCAP PlaygroundMatthew McKinney
one page developers cheat sheet for OCAP Playground https://ocap.arcblock.io giving developers different examples including RootQueryTypes, SubscriptionsQueryTypes, and different data types and references.
A presentation by Aicha Khabil (Responsable IT à l'université Alger 3) done during the 11th edition of Algiers Tech Meetup on October 8th 2016, at Djezzy Training Center (Algiers)
Klaytn: Service-Oriented Enterprise-Grade Public Blockchain Platformif kakao
한재선(Jason.han) / Ground X
---
Ground X에서 개발하고 있는 퍼블릭 블록체인 플랫폼인 Klaytn에 대해 소개합니다. Klaytn은 대규모 사용자를 기반으로 하는 서비스를 블록체인 기반에서 실행시키는데 최적화된 플랫폼으로서, 기업 수준의 서비스 제공자가 믿고 사용할만한 기능과 거버넌스 등을 제공하는 것을 목표로 한다. 본 발표에서는 현재 블록체인 기술의 이슈를 살펴보고, Klaytn의 솔루션을 소개합니다. 특히 속도와 성능에서의 이슈뿐 아니라 사용자 경험의 개선이나 대규모 서비스를 실행하기 위한 플랫폼 기능들에 대해서도 살펴보고자 합니다.
This is a presentation is an introduction to the blockchain. It defines, what is the blockchain and shows how JavaScript developers can create blockchain applications.
“Technical Intro to Blockhain” by Yurijs Pimenovs from Paybis at CryptoCurren...Dace Barone
He will give an introduction talk about Blockchain technology technical aspects like cryptography, protocols, APIs and scripting with focus on explaining how Bitcoin and other blockchain works and what they consist of.
Yurijs is a Chief Technical Officer at Paybis, blogger at coinside.ru , blockchain enthusiast since 2011.
ArcBlock Developers GraphQL Cheat Sheet for OCAP PlaygroundMatthew McKinney
one page developers cheat sheet for OCAP Playground https://ocap.arcblock.io giving developers different examples including RootQueryTypes, SubscriptionsQueryTypes, and different data types and references.
A presentation by Aicha Khabil (Responsable IT à l'université Alger 3) done during the 11th edition of Algiers Tech Meetup on October 8th 2016, at Djezzy Training Center (Algiers)
Klaytn: Service-Oriented Enterprise-Grade Public Blockchain Platformif kakao
한재선(Jason.han) / Ground X
---
Ground X에서 개발하고 있는 퍼블릭 블록체인 플랫폼인 Klaytn에 대해 소개합니다. Klaytn은 대규모 사용자를 기반으로 하는 서비스를 블록체인 기반에서 실행시키는데 최적화된 플랫폼으로서, 기업 수준의 서비스 제공자가 믿고 사용할만한 기능과 거버넌스 등을 제공하는 것을 목표로 한다. 본 발표에서는 현재 블록체인 기술의 이슈를 살펴보고, Klaytn의 솔루션을 소개합니다. 특히 속도와 성능에서의 이슈뿐 아니라 사용자 경험의 개선이나 대규모 서비스를 실행하기 위한 플랫폼 기능들에 대해서도 살펴보고자 합니다.
This is a presentation is an introduction to the blockchain. It defines, what is the blockchain and shows how JavaScript developers can create blockchain applications.
BlockChain basics for the non-technical banker covering what's happening, what the opportunities are, and the problems we all face. Covers BitCoin and Ethereum with brief mentions made of Ripple and the HyperLedger project.
Blockchain, cryptography and tokens — NYC Bar presentationPaperchain
Concise version of presentation delivered at the NYC Bar Association.
Overview of blockchains, how cryptography works on blockchains and the difference between cryptocurrencies and tokens.
The main things you need to know about blockchain:
+ What Is A Blockchain. Theory
+ Ordering Facts
+ Blocks
+ Mining
+ Money and Cryptocurrencies
+ Contracts
Mind My Value: A decentralised infrastructure for fair and trusted IoT data ...Paolo Missier
A paper talk given at the 7th IoT conference, Linz, Austria, Oct. 2017
paper: http://bibbase.org/network/publication/missier-bajoudah-capossele-gaglione-nati-mindmyvalueadecentralizedinfrastructureforfairandtrustediotdatatrading-2017
Next generation IoT data marketplace using blockchain technology
Detecting real-time market manipulation in decentralized cryptocurrency excha...DataWorks Summit
A "decentralized exchange" is a currency exchange which lives and is run completely as a smart contract on the blockchain with no central authority or party running the backend. Funds are held in a smart contract and secured with a public/private key pair, such that each buy/sell/withdraw can only be invoked by the wallet owner and not by the central cluster admin.
The smart contract itself is run on the Ethereum Virtual Machine, which is comprised of hundreds of thousands of nodes that run independently on people's personal computers (and GPU farms!) but store every event on a public ledger. This enables a powerful platform for Investors, but also for money launderers, and "pump and dump" schemers.
For this demo, we will use popular data science tools to analyze EtherDelta's books—a cryptocurrency exchange with over 1 billion USD worth of funds in the "smart contract"—and leverage this publicly available dataset to expose which "coin" may be associated with scams, as they happen.
From a technology stack, we will showcase how events on a blockchain can be analyzed in modern big data architectures. These events could be the logs of a smart contract execution, for which we'll show how to leverage Spark via a Jupyter or Zeppelin Notebook to perform ETL using the power of a remote Hadoop cluster. This will cover our experiences in the slowness and limitations of querying data directly from the blockchain, and how a Kafka producer/consumer model works well for analyzing granular level applications running on one of the many blockchains/tangles arising in the crypto-currency decentralized compute world. KAT PETRE, Ambari Product Owner, Hortonworks and JESUS ALVAREZ Advisory Software Engineer, IBM
At a very high level, the Blockchain is a decentralized ledger, or list, of all transactions across a peer-to-peer network. This is the technology underlying Bitcoin and other cryptocurrencies, and it has the potential to disrupt a wide variety of business processes.
VOLUME-7 ISSUE-8, AUGUST 2019 , International Journal of Research in Advent Technology (IJRAT) , ISSN: 2321-9637 (Online) Published By: MG Aricent Pvt Ltd
Upfront Ventures blockchain and crypto deckMark Suster
Mark Suster of Upfront Ventures gives a presentation primer on Cryptocurrencies & Blockchain. This is best consumed with a video that will be released and available on Upfront's YouTube page: https://www.youtube.com/user/upfrontventures/videos
"Impact of front-end architecture on development cost", Viktor TurskyiFwdays
I have heard many times that architecture is not important for the front-end. Also, many times I have seen how developers implement features on the front-end just following the standard rules for a framework and think that this is enough to successfully launch the project, and then the project fails. How to prevent this and what approach to choose? I have launched dozens of complex projects and during the talk we will analyze which approaches have worked for me and which have not.
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
More Related Content
Similar to Block 16 - Ethereum block transaction info via aggregated views API by Block 16
BlockChain basics for the non-technical banker covering what's happening, what the opportunities are, and the problems we all face. Covers BitCoin and Ethereum with brief mentions made of Ripple and the HyperLedger project.
Blockchain, cryptography and tokens — NYC Bar presentationPaperchain
Concise version of presentation delivered at the NYC Bar Association.
Overview of blockchains, how cryptography works on blockchains and the difference between cryptocurrencies and tokens.
The main things you need to know about blockchain:
+ What Is A Blockchain. Theory
+ Ordering Facts
+ Blocks
+ Mining
+ Money and Cryptocurrencies
+ Contracts
Mind My Value: A decentralised infrastructure for fair and trusted IoT data ...Paolo Missier
A paper talk given at the 7th IoT conference, Linz, Austria, Oct. 2017
paper: http://bibbase.org/network/publication/missier-bajoudah-capossele-gaglione-nati-mindmyvalueadecentralizedinfrastructureforfairandtrustediotdatatrading-2017
Next generation IoT data marketplace using blockchain technology
Detecting real-time market manipulation in decentralized cryptocurrency excha...DataWorks Summit
A "decentralized exchange" is a currency exchange which lives and is run completely as a smart contract on the blockchain with no central authority or party running the backend. Funds are held in a smart contract and secured with a public/private key pair, such that each buy/sell/withdraw can only be invoked by the wallet owner and not by the central cluster admin.
The smart contract itself is run on the Ethereum Virtual Machine, which is comprised of hundreds of thousands of nodes that run independently on people's personal computers (and GPU farms!) but store every event on a public ledger. This enables a powerful platform for Investors, but also for money launderers, and "pump and dump" schemers.
For this demo, we will use popular data science tools to analyze EtherDelta's books—a cryptocurrency exchange with over 1 billion USD worth of funds in the "smart contract"—and leverage this publicly available dataset to expose which "coin" may be associated with scams, as they happen.
From a technology stack, we will showcase how events on a blockchain can be analyzed in modern big data architectures. These events could be the logs of a smart contract execution, for which we'll show how to leverage Spark via a Jupyter or Zeppelin Notebook to perform ETL using the power of a remote Hadoop cluster. This will cover our experiences in the slowness and limitations of querying data directly from the blockchain, and how a Kafka producer/consumer model works well for analyzing granular level applications running on one of the many blockchains/tangles arising in the crypto-currency decentralized compute world. KAT PETRE, Ambari Product Owner, Hortonworks and JESUS ALVAREZ Advisory Software Engineer, IBM
At a very high level, the Blockchain is a decentralized ledger, or list, of all transactions across a peer-to-peer network. This is the technology underlying Bitcoin and other cryptocurrencies, and it has the potential to disrupt a wide variety of business processes.
VOLUME-7 ISSUE-8, AUGUST 2019 , International Journal of Research in Advent Technology (IJRAT) , ISSN: 2321-9637 (Online) Published By: MG Aricent Pvt Ltd
Upfront Ventures blockchain and crypto deckMark Suster
Mark Suster of Upfront Ventures gives a presentation primer on Cryptocurrencies & Blockchain. This is best consumed with a video that will be released and available on Upfront's YouTube page: https://www.youtube.com/user/upfrontventures/videos
"Impact of front-end architecture on development cost", Viktor TurskyiFwdays
I have heard many times that architecture is not important for the front-end. Also, many times I have seen how developers implement features on the front-end just following the standard rules for a framework and think that this is enough to successfully launch the project, and then the project fails. How to prevent this and what approach to choose? I have launched dozens of complex projects and during the talk we will analyze which approaches have worked for me and which have not.
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
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.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
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.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
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?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
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:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
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;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
Search and Society: Reimagining Information Access for Radical FuturesBhaskar Mitra
The field of Information retrieval (IR) is currently undergoing a transformative shift, at least partly due to the emerging applications of generative AI to information access. In this talk, we will deliberate on the sociotechnical implications of generative AI for information access. We will argue that there is both a critical necessity and an exciting opportunity for the IR community to re-center our research agendas on societal needs while dismantling the artificial separation between the work on fairness, accountability, transparency, and ethics in IR and the rest of IR research. Instead of adopting a reactionary strategy of trying to mitigate potential social harms from emerging technologies, the community should aim to proactively set the research agenda for the kinds of systems we should build inspired by diverse explicitly stated sociotechnical imaginaries. The sociotechnical imaginaries that underpin the design and development of information access technologies needs to be explicitly articulated, and we need to develop theories of change in context of these diverse perspectives. Our guiding future imaginaries must be informed by other academic fields, such as democratic theory and critical theory, and should be co-developed with social science scholars, legal scholars, civil rights and social justice activists, and artists, among others.
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
PHP Frameworks: I want to break free (IPC Berlin 2024)
Block 16 - Ethereum block transaction info via aggregated views API by Block 16
1. June 19, 2018
Ethereum Block & Transaction Info via Aggregated Views
(API by Block 16)
medium.com/block-16/ethereum-block-transaction-info-via-aggregated-views-api-by-block-16-aa9b175da929
When working with web applications that interface with Ethereum nodes, I’ve always found
that I need more information than is provided by singular JSON-RPC calls. For instance, you
can get the information about the block —but then have to run another call to get information
about a transaction — and yet another call for the transaction receipt. If you are gathering and
organizing this information at scale, it oftentimes requires over 500 HTTP requests and can
take a lot of time (not to mention a burden on Infura). At Block 16 we have created internal
APIs to present this information quickly along with different “views” or organizations of
blockchain information. Today we are making some of these public.
Get All Block Information by Number. Get all block information, uncles, transactions and
receipts by block number. The datastructure is much like what’s returned from normal
eth_getBlockByNumber RPC but includes a list of uncles, transactions, and receipts achieved
from eth_getUncleByBlockNumberAndIndex, eth_getTransactionByHash and
eth_getTransactionReceipt calls respectively. More information can be foundhere, by invoking
the following command in terminal or clicking the link within the command:
curl -X GET https://api.block16.io/v1/block/5000000
-H 'Accept: application/json'
Get All Current Block Information. Get all block information, uncles, transactions and
receipts for the current block. Internally we track all transactions on the network and perform
various operations — so we tend to run about 1–10 seconds behind the current block.
curl -X GET https://api.block16.io/v1/block/current
-H 'Accept: application/json'
Subscribe to Current Block via Websocket. Same as the endpoint described above but the
websocket pushes the current block information upon connection and receives updates as
blocks are processed. A sample application can be viewed here with source code available
here.
Get Last 100 TXs by Address. We have an interesting data format for this endpoint that is
informed by availability and database space:
1/2
2. {
"address": "0000000000000000000000000000000000000008",
"transactionDate": 1528012206000,
"value": "1000000000000000000",
"toAddress": "0000000000000000000000000000000000000008",
"fromAddress": "dfa5d32e82ce9d131ca77f5e260c3d0d68deb61b",
"ethereumContract": "3543638ed4a9006e4840b105944271bcea15605d",
"transactionHash":
"945ab5e688660478b0bb813cc6c2f4c8a17bb1d8bed810634ec203a26e7a74d8",
"blockNumber": 5724039,
"transactionType": "token_transaction",
"fee": "16440820000000000"
}
Notice that all hex prefixes are removed and that there is a “toAddress”, “fromAddress” and an
“address” field. Incoming transactions are found by matching “address” with the “toAddress”
and outgoing by matching “address” with “fromAddress”. The “value” property is the base 10
raw value of the transaction in wei if it was not a token transaction. If it was a token
transaction, the “value” property is the raw token amount without decimals. The “fee” is in base
10 wei. For more information about the structure of the data visit the documentation. Curl
invocation:
curl -X GET
https://api.block16.io/v1/address/0x0000000000000000000000000000000000000001/transactio
ns -H 'Accept: application/json'
Get All Token Contracts Associated with an Address. This endpoint lists all token contract
addresses that an Ethereum address has ever been associated with. As with the previous
endpoint, the “0x” hexadecimal prefix is removed in order to save space in the database.
curl -X GET
https://api.block16.io/v1/address/0x0000000000000000000000000000000000000001/assets -H
'Accept: application/json'
The formal slate documentation can be found at https://docs.block16.io/ . All of the endpoints
have crossorigin headers included so you’ll be able to use them in a webapp, though there is a
30 request per minute limit implemented per IP. If these endpoints become popular we’ll
consider increasing the request per minute limit and scaling/sharding our public databases.
Our goal is to help the ecosystem create more responsive and informative webapps. Any
feedback is greatly appreciated!
2/2