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Wellington Hashgraph Meetup #3

September 27, 2018
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We hosted the 3rd Wellington Hashgraph meetup a few days ago and had some international guests from around the world. About 15 people turned up so we are slowly growing (some new faces) and again, food and drinks were provided as well. We had developers Magnus Bondesson, Chi Hao Poon, Jonas Wallenius and Patrik Åkerlund join from Sweden to talk about their interesting game called BlockWars. (https://blockwars.live/) BlockWars is a map based war game running on the Ethereum blockchain and the team is looking to port this over to Hashgraph. The idea is to conquer the world by owning territory similar to the board game Risk. Above you can see Morne owning some territory in New Zealand and it was attacked by one of the BlockWars guys. Afterwards we had Shiv Aggarwal, CEO of  MyEarth.id talk about this project of creating an decentralised identity management system. It is an ambitious project and they raising capital. Afterwards, there was a good discussion about the up and coming hackathon and developers conference where we are looking to live stream the event. The next meetup is scheduled for October 17th 2018. More details can be found at: H18 – Hedera Hashgraph Developer Conference Wednesday, Oct […]
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Wellington Blockchain Meetup September 2018

September 20, 2018
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It was time for another get together of the community and to see who the true dedicated enthusiast were in amidst this crypto winter. Only about 20 people turned up but the topics were certainly very interesting. Jevon gave an update on Cryptfolio.com, a site that keeps track of your crypto portfolio, and how all your trades can be pulled from various sources to help your accountant deal with tax. Although prefaced with the disclaimer that this was not financial or legal or tax advice, in NZ, each trade is considered a taxable event and needs to be tracked. Jevon even walked through several examples and there were great questions from the audience. Jevon gave a demo of extracting a bunch of trades from various exchanges and exporting it as a CSV. Then we had Andy from Horizon State talk about their new charity app Coin Pocket (https://coinpocket.hs.app). What was interesting was a tweet from Nimo, co-founder of Horizon State. Two #blockchain meetups this week. Two different countries. Two fire alarms go off. The only thing in common was me 😂😂😂 #blockchainflowerkids in da house!? — Nimo Naamani (@nimo_ni) September 20, 2018 We had an alarm of some sort go […]
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An intro in the world of ISO/TC 307

September 13, 2018
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My first foray into the ISO world came in the form of helping companies attain ISO 9001, Total Quality Management. This is the stamp of approval indicating that a company is following good practices and procedures usually in the manufacturing industry. I spent some time looking at the ISO 27000 series when I was a briefly a Certified Information Systems Auditor (CISM) and then I learnt the entire NZ Electricity Act 1992 (the regs) and the AS/NZS 3000 for the electrical industry. Having studied (not invested unfortunately) blockchains since 2014, when ISO/TC 307 blockchains and distributed ledger technology came out I jumped at the chance to get involved. I had been in contact with Standards NZ and contributed to New Zealand upgrading its status from an O member (Observing) to a P member (Participating). It was very challenging at first because you indicate from a list of topics what interests you and your Standards body rep registers you to various groups. Then you get hammed with all sorts of emails and there is no one to help “onboard” or explain what all of this means. In May 2018 there were 7 Study Groups (SG) and 3 Work Groups (WG). ISO/TC […]
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Developments in the Blockchain Ecosystem

August 27, 2018
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This evening there was a meetup under the Decentralised Future Education Program where there was  a panel discussion about the latest development in the blockchain space covering legal aspects including jurisdictional, privacy and tax issues. The panelists were: Anand Chawra (Principal @ Boston Consulting Group) Bonnie Yiu (Co-founder @ Consulere.io) Michael Bacina (Partner @ Piper Alderman) Nick Addison (Systems Architect @ Consensys) Tom Terado (moderator) There was also Zhongxing Ming (Founder & CEO) from BlockCloud talking about  Blockchain-based Advanced TCP/IP. There was a great turn out and the food was something from the top draw! I’m sure the sponsors, Adelaide Blockchain, bitfwd, NextGenius had something to do with that!   There are two further events coming up next Monday and the Monday after so keep a look out at: https://www.meetup.com/bitfwd/
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BokkyPooBah’s Sydney Ethereum Workshop

August 24, 2018
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Bokky’s continues to run his legendary Ethereum smart contract workshop that has grown to over 700 members and it was his 82nd workshop since he’s been counting which is staggering. It would probably be in excess of 100 if he had counted from the beginning! This evening it was going back to basics talking about memory and registries of the Ethereum Virtual Machine (EVM), going through his mind map of Ethereum of Bunnies and also about FOMO3D. We all learn better when we combine individual learning with group discussions so Bokky’s contribution to the ecosystem is so vital. He is world class and I even noticed the accompanying snacks and beverages to be amazing too. Sharon Lu, the General Manager of Tyro Fintech Hub is the glue that brings everything together and does a wonderful job. To find out more about the meetup visit. https://www.meetup.com/BokkyPooBahs-Ethereum-Workshop/ Check out the mind map at: https://github.com/bokkypoobah/EthereumForBunnies There is also a forked copy of the Mastering Ethereum book (authored by Andreas Antonopoulos and Gavin Wood) in a nicer format also: https://github.com/bokkypoobah/MasteringEthereum
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Consensus protocol explained with Ethan Buchman from Tendermint

August 17, 2018
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Here is a great podcast on a bit of history of consensus protocol, what they are and how they work and also what Tendermint is and what it is useful for. Worth 60mins of your time. The transcript can be found here. Consensus Systems with Ethan Buchman
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Wellington Blockchain Meetup with NEO, Moonlight and Hyperledger

August 15, 2018
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Last night the Wellington community came together to talk blockchains at BizDojo. Some of us formed a support group to help get us through this crypto winter or crypto ice age we are experiencing at the moment also! Andrew kicked things off sharing his experience in the crypto space with some interesting stats on companies in China such as Alibaba and Tencent and how big these companies actually are. This was the basis of his interest in NEO. Next Elias Tan from Moonlight which is a decentralized platform, built on the NEO network that will change the way you recruit and scale your workforce. Elias talked about how they are using the blockchain as a means to record work experience and have it verified so that potential employers can trust someone’s work history and can also hire them based on this information instead of race, age or gender. “Trustless Hiring” it is called. For more info visit: https://moonlight.io/ Finally we had Sandy from IBM explain a bit about Hyperledger or technical Hyperledger Fabric or the “IBM Blockchain”. Here is a link for more information: https://www.ibm.com/blockchain/getting-started Thanks to BizDojo as always and if anyone has anything to share, let us know and […]
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How blockchains work

August 1, 2018
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This is a great example showing how blockchains work. Highly recommend watching it.
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First New Zealand Hashgraph Meetup

July 25, 2018
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A few nights ago Wellington held its first Hedera Hashgraph meetup to learn more about this new technology. It was very well organised with food, drinks and international guests as well. Shout out to Morne for organising the venue, food, schedule and testing all the tech to ensure a smooth meetup! Billy “Gossip Guy” from New York dialed in to give an overview of Hashgraph and some of the projects that are using Hashgraph. Then Edgar Seah (Head of Asia Pacific for Hedera) ran through some of the technical aspects of Hashgraph and how it works under the covers in terms of consensus algorithms and then Calvin Cheng, a Hashgraph developer advocate talked about the SDK and the public ledger and how one can start testing and developing using Hashgraph. For anyone interested in Hashgraph, here are some interesting links: Wellington Hashgraph Meetup Page Hedera Hashgraph Website Swirlds SDK Telegram Channel Discord (for devs)  
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Running NEM on a Raspberry Pi in 5 minutes

July 24, 2018
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A raspberry pi is a very neat device and very powerful for its size. Here is a simple guide on getting the NEM blockchain running on it in 5 minutes. What you’ll need: Raspberry Pi. I’m using the Pi 3 Model B as it has inbuilt wifi and 1Gb ram Step 1: Download NIS Visit: https://nem.io/downloads/ and download the NEM Infrastructure Server. Assuming you have ssh’d into your Raspberry Pi, I navigated to the Downloads folder and ran wget. wget https://bob.nem.ninja/nis-0.6.95.tgz You might encounter a certificate error: ERROR: The certificate of ‘bob.nem.ninja’ is not trusted. ERROR: The certificate of ‘bob.nem.ninja’ has expired. If you do, run the following: wget --no-check-certificate https://bob.nem.ninja/nis-0.6.95.tgz Step 2: Extract NIS Extract the file with: tar -xvf nis-0.6.95.tgz You will see a new package folder. cd into this folder and you’ll see a whole bunch of files. You can actually start the NEM node now if you want to run on mainnet. For testing purposes, let’s configure it for testnet. Step 3: Switching to testnet cd into nis and edit config.properties cd nis nano config.properties Look for “nem.network = mainnet” and change to “nem.network = testnet” Step 4: Start NEM Node ./nix.runNis.sh You should see the node […]
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What does Byzantine Fault Tolerance mean?

July 16, 2018
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I’ve been trying to understand what Byzantine Fault Tolerance means for almost a year now and slowly peeling off the layers of the onion to understand better but I’m probably still only a quarter of the way there. In this article I will try to explain BFT in a different way. From the dictionary One of the main challenges for me in understanding BFT is understanding the word itself. What does Byzantine actually mean? The Oxford dictionary defines it as: Relating to Byzantium (now Istanbul), the Byzantine Empire, or the Eastern Orthodox Church (of a system or situation) Excessively complicated Characterized by deviousness or underhand procedure. Straight of the bat, these definitions don’t make understanding BFT any easier. Let’s go to Wikipedia Wikipedia The standard go to for any BFT explanation is some team of dudes (a general) wanting to attack some castle with a handful of other teams and the rule is they need to either attack all at once or not attack at all. Any half baked attempt will result in catastrophic failure and with everyone retreating with their tails between their legs way back to ancient Mesopotamia in early antiquity. I’ve read it about a million times, watched […]
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BitPrime Ross Carter-Brown

July 12, 2018
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Had a great catch up with Ross Carter-Brown from BitPrime, a cryptocurrency retailer based in Christchurch, New Zealand. BitPrime offer Kiwis a way to purchase a range of cryptocurrencies the old fashioned way, through a web order form but aim to provide exceptional customer service. This is because their target market is the average non technical market segment. They offer an ever growing variety of coins and tokens and also provide consultancy and support. Their prices are slightly higher than traditional exchanges but that is because they are helping their customers through the buying process and creating a longer lasting relationship as well.  
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Blockchain 101 with Crypto LaunchPad, Blueblock and NEM

July 7, 2018
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This week there were two events held in Wellington and Auckland explaining the crypto landscape and what some local Kiwi companies are doing in the space. The turn out in both locations were fantastic. Wellington Dalaney Davis talked about NEM and the community fund that is available to help get projects off the ground. James Waugh talked about his company Blueblock and his experience in the tokenomics advisory space. Adiraj and Zac explaining Crypto Launchpad‘s services around due diligence, advisory services and investment banking. Auckland There was a great turn out in Auckland as well with the audience coming from a wide range of background. Keep a look out for events in the South Island as well.
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Hashgraph Hello World on Eclipse

July 1, 2018
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Running the Hashgraph hello world sdk using command line is quite simple and fast but if you want to start building your own applications, using and IDE like Eclipse is the way to go. Step 1: Download the Swirlds SDK. Download the Swirls SDK at https://www.swirlds.com/download/ and extract it. Step 2: Download & Install Eclipse Download the latest version of Eclipse at: http://www.eclipse.org/downloads/. The Hashgraph docs mention Eclipse 4.7 (Oxygen) but 4.8 (Photon) has just been released. We’ll be using Photon here but either will be fine even including older versions. Note: If you get this error: “The JVM shared library “/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/bin/../lib/server/libjvm.dylib” does not contain the JNI_CreateJavaVM symbol“, then check out how to resolve it here. Once the install completes, select Eclipse IDE for Java Developers. The Enterprise Edition (EE) version will work as well. Then select an installation folder and accept the T&Cs and open up the application. Step 3: Import Hashgraph SDK Project Ignore the welcome start up page and click ‘Workbench’ in the top right hand corner. If you can see the package explorer pane on the left hand side navigate to Window > Show View > Project Explorer. Then select File > Import > Maven > Existing […]
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NEM testnet faucet mines Monero

June 20, 2018
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Here is a NEM testnet faucet if you are testing the NEM blockchain. You can claim up to 10 XEM (randomly) every 1 hour and your computer’s CPU will shoot to 300% for a minute or two while it solves a proof of work algorithm. It is basically mining Monero for the owner of the site using the cryptonight algorithm. https://xarleecm.com/en/nemfaucet/
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Hello World Hashgraph Raspberry Pi

June 17, 2018
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If you have a Raspberry Pi lying around and fancy seeing if you can get the Hashgraph sdk running on it, here is how. Step 1: Check if Java is present and if it is 1.8+ If you are running Raspbian Stretch, it will have Java 8 already on it. Otherwise you’ll have to download it at  Oracle The location of Java on the Pi is: /usr/lib/jvm/jdk-8-oracle-arm32-vfp-hflt Step 2: Get the sdk Run: > wget https://www.swirlds.com/downloads/Swirlds%20SDK%20-%20version%2018.05.23.zip If you try running the sdk: > jav -jar swirlds.jar and get this error: The JAVA_HOME environment variable is not defined correctly This environment variable is needed to run this program NB: JAVA_HOME should point to a JDK not a JRE Make sure you have set JAVA_HOME correctly. To set it run: > nano ~/.profile and add this line at the bottom of the file: export JAVA_HOME=/usr/lib/jvm/jdk-8-oracle-arm32-vfp-hflt Take care of arm32 if you copied the command from another website. Test by running: > echo $JAVA_HOME > /usr/lib/jvm/jdk-8-oracle-arm32-vfp-hflt Step 3: Download JCE If you try and run it now, you’ll probably get this error: *************************************************************************** * ERROR: Please install the Oracle JCE Unlimited Jurisdiction Policy files. * They can be downloaded as a single .zip file from: *     […]
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Hashgraph Hello World

June 13, 2018
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If you’ve heard about Hashgraph and wondering how to get started, here is a little guide based off the docs provided in the SDK. Running the demo is easy but preparing your system can take a little bit of time. (Just like cooking!) A good place to start is https://www.hederahashgraph.com/ where you can read a bit about it but there is a section for developers which points you to https://dev.hashgraph.com/ which is where the good stuff is. There is a “How do I get started?” section which is where you … start. The instructions are at: https://dev.hashgraph.com/docs/installation/ Pre flight check list Step 1: JDK 8 You need at least JDK 8 otherwise you’ll get an error like this: > cloudnthings$ java -jar swirlds.jar > Exception in thread "main" java.lang.UnsupportedClassVersionError: com/swirlds/platform/Browser : Unsupported major.minor version 52.0 If you are on a Mac, you want to run: > java -version java version "1.8.0_171" Java(TM) SE Runtime Environment (build 1.8.0_171-b11) Java HotSpot(TM) 64-Bit Server VM (build 25.171-b11, mixed mode) and make sure you get a response like above. Otherwise go to Oracle and download the Java SE Development Kit. Go through the installation process and you should see a folder called jdk1.8.0_171.jdk at /Library/Java/JavaVirtualMachines/ Run the java -version command again […]
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Crypto Estate Planning, Tokenizing the World and Social Impact with Choice

June 1, 2018
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A great turn out to the Wellington Blockchain Meetup last night where we had three talks. Wendy and Lauchie from Wakefields Lawyers presented on Crypto Estate Planning. Some really good questions to think about even though most of the time we may not want to. The title of the presentation sparked interest. “Logging out of Life, Digital Estate Planning”. For more info contact www.wakefieldslaw.com I presented next on the Tokenization of Everything and touched on my research at www.theicotrain.com and how everything is going to be tokenized. I compressed all this knowledge into a book called Tokenomics with co-author and good friend Thomas Power. There were lots of other contributors to the book as well to make this happen. I then finished off by announcing the idea of the creation of a book worm loyalty token for book purchasers but the bigger play was a social impact cause to help take a portion of the profits to help fund primary school reading programs. The main event was Ossie and Fraser from Choice talking about social impact on the blockchain. $461 million in transaction fees from giants such as Visa and Mastercard go overseas. Choice is a new payment system based on […]
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Token Summit I with Sia, Storj, Filecoin and Blockstack

May 17, 2018
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A really neat video from Token Summit I in New York on May 25 2017 talking about decentralized storage. The guys on stage are William Mougayar (moderator), Muneeb Ali, co-founder of Blockstack, Juan Benet, founder of Protocol Labs, Shawn Wilkinson, founder of Storj and David Vorick co-founder of Siacoin.
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Wellington Blockchain Meetup Summary

May 11, 2018
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It was good to get everyone out of the woodworks for another Wellington Blockchain Meetup. Morne talked about Hashgraph and had a great presentation zooming in and out of the various points and his fancy logitech pointer that could also zoom as well! Jevon presented CryptoFolio which is a web application allowing anyone to keep track of their cryptocurrency portfolio. Finally we had Del Rajan from Victoria University talking about a paper he co-wrote with Matt Visser on Quantum Blockchain Entanglement in Time. Just the title is enough to make you think wow. Keep an eye out for the next meetup, everyone is welcome and if you have something to share, get in touch!
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