Nxt and Ardor hackaton March 22, Norway

NFEA Autonomy Conference + Ardor/Ignis Workshop and Hackaton

At the upcoming NFEA Autonomy Conference in Norway, there will be hands-on Ardor/Nxt workshops and a hackathon for developers on the 22nd. Bring your own laptop.

Developers are invited for the March 22nd hackaton.


March 20-21, The Autonomy Conference 2018, Scandic Bystranda Hotel, Kristiansand, Norway
Go to the Registration Site for the conference (in Norwegian).

Full program

March 22, Ardor Hackaton, Scandic Bystranda Hotel, Kristiansand, Norway
Go to the Registration Site for the hackaton. This event is sponsored by SFI Offshore Mechatronics and is free for the participants, but the number of seats is limited to 50.

Program for the hackaton event:
08:00 – 08:30 Coffee/tee
08:30 – 10:00 Ardor API programming, test page, account creation, node JS module, security considerations
10:00 – 10:30 Coffee/tee
10:30 – 11:30 Using the Ardor API exercises (Javascript skills recommended)
11:30 – 12:30 Lunch
12:30 – 14:00 Ardor server side add-ons, custom bundlers, dbshell
14:00 – 14:30 Coffee/tee
14:30 – 16:30 Building Ardor add-ons exercises (Java skills required)

Intel & The Floor Hackathon – Day 2

Riker (Lior Yaffe, Nxt, Ardor, Jelurida) was at the Intel & The Floor Blockchain Hackathon in Tel Aviv, to meet the challenge of creating a digital “Share registration” solution.

As we learned yesterday, it turned out that coding or hacking wasn't very needed, as all the necessary functionality (and GUI) is already built into the Nxt core distribution and has been working for years. Anyone can download the Nxt Client and make use of it already.

Read on and see how Nxt solves the hackathon challenge right out of the box.


Judgment criteria

riker [9:36]

Update from the organizers:

The Jelurida/NXT team was automatically qualified to the finals (no need to present in front of the judges in the semi-finals). This means a whole 5 minutes presentation in front of the full panel + 2 minutes time for questions for judges.

The presentation


Mobile video recording of the presentation: https://goo.gl/photos/9P37BykVUfyo42ys9

riker [4:12 PM]

Done now. Took 4:20 minutes to deliver. There were no questions so not sure if everything was understood or if they lost interest. 

There is a low-quality video from my phone. I'll upload it after I get a chance to watch it.

The aftermath

riker [5:39 PM]

No prize but was a very nice experience.

martis [9:53 PM]

Curious why there were no questions. The audience were shocked or couldn't believe it can be done just on blockchain?

riker [9:55 PM]

Only the 10 judges were allowed to ask questions.

In other presentations, they asked 1 or 2.

apenzl [9:54 PM]

How much time did you spend on coding compared to the winners of the hackathon, u think?

riker [9:56]

Frankly, I didn't spend too much time coding. I think maybe 40% of the time. Dozens of people kept approaching my desk to chat about my plans and make suggestions and I pitched about our technology to anyone who was willing to listen.

I have business cards from businessmen from (in no particular order) KPMG, Accentue X 2, HSBC, Tel Aviv Stock Exchange, Intesa San Paolo and others. Spoke to several executives from Intel, the organizer.

One of the main problems of our team was that it was only me, I think we scored really bad in this category.

Nevertheless, it was a great experience, we got tons of exposure and I made some interesting connections. I think when getting on stage in front of 200+ people my heart rate jumped to 200. Overall it was a great learning experience. 

Thanks, Lior!

What Lior Yaffe presented to the panel and the audience in Tel Aviv today was just a small part of what the Nxt platform has to offer. Get a good overview of the Nxt core features and how to use them here.

Interested developers can get a good start here and by reading the nxtwiki. Don't forget to join our Slack, talk to us, and if you think Nxt is amazing - take a look at ARDOR.

Intel & The Floor Hackathon – Day 1

This morning, the Intel & The Floor Blockchain Hackathon kicked off. The blockchain hackathon, which is organized by Intel, The Floor & the Tel Aviv Stock Exchange, is running for 2 days, from 29-30 March 2017 at the Tel Aviv Stock Exchange together with the participation of leading banks.

Nxt and Ardor core developer, and managing director of Jelurida, Riker (Lior Yaffe), is attending and has been updating the Nxt community throughout the day.

Here’s a short summary of the event so far for Nxt’s representative.

Hackathon Subject:
Blockchain solutions for banks

Participant Objectives:
Banks will be presenting challenges in advance and participants will develop solution using one of the common blockchain platforms: ethereum, R3 Corda, Hyperledger Sawtooth lake, Hyperledger Fabric, Bitcoin or others.

Riker had, beforehand, cleared with the organizer, that a Nxt/Ardor/Jelurida blockchain solution was welcome. His idea, which he pitched and discussed with the Nxters on Nxtchat yesterday evening, was to code a use case around the Nxt Asset Exchange and its built-in dividend distribution system, as it’s one of the Nxt features very relevant for banks, and also unique to Nxt.



I have a vague idea what to say.

riker [8:44 AM]

“We have a solution to the blockchain bloat problem. Real solution in production, not a Whitepaper. A team of developers with over 10 man years experience combined, and an operational public blockchain running for over 3 years.

Focus today is on issuing shares on the blockchain and dividend payment. We will develop various decentralized dividend payment methods using the NXT and Ardor blockchain.

I’m Lior Yaffe, managing director of Jelurida and developer of NXT and Ardor. Come talk to me.”

Lior was one of 15 pitchers.

The Challenge

riker [5:13 PM]

I’m working on a use case for the Tel Aviv Stock exchange:

“Share registration”.

The “problem” is, that the functionality we provide out of the box with data cloud, phasing, messages, account ledger, encrypted file attachment, shared key is enough to implement this.

I don’t have anything real to develop.

The mentor told me “you better work on a presentation.”

The ETH guys have teams of 5-6 people working on similar tasks.

wolffang [5:39 PM]

Are you enjoying yourself? 🙂

riker [5:40 PM]

Eating all the time

They only provide 2 minutes to demo the solution for the semi-finals and if you qualify for the finals you get 5 more minutes. This means that live demo is out of the question.

Hence why a presentation is necessary.

Use case overview

Once the issue and allocation process is determined, the issuing company files a request to list the new shares in the exchange. This request is examined by various gatekeeping entities (transfer agent; Exchange regulation) and if accepted, allows the company to list its shares, update its shareholder records, and complete the allocation to public investors. This process takes place nowadays with the issuing company producing a physical stock certificate, stating the amount of newly issued shares, in the name of the transfer agent. The agent safe keeps the certificate while instructing the clearinghouse to allocate the shares to the public owners. This process is relevant for every change in the company’s capital structure.


Establish a digital, one stop shop solution to register shares, handle corporate actions, and allow for updates of company capital structure.

Key Features:

  • Issuing company will transmit listing request through the platform;
  • Request will be examined by various gatekeepers (exchange; due legal procedures; reception of allocation details; money transfer). Each gatekeeper will be able to access the request and approve it.
  • Once all necessary approvals have been given, the company receives listing approval, an indication to update its records, and a digital certificate indicating the issue is produced.
  • Platform will inform clearing house of issue allocation.

riker [9:06 PM]

Enough for today

Tomorrow I will ask my teammate to video [my presentation] in case he is around.

Read about DAY 2 >>>

The NxtHacks Hackathon 2015

Fame and fortune awaits!

This is an all-comers challenge issued by Jones.

Using any programming language or library you like, can you build a fully functioning App using the Nxt API in just 48 hours?

Nxt is the fastest developing, open source, second-generation cryptocurrency platform.

For a complete listing of all available Nxt API calls: http://jnxt.org:7876/test

To sign up for the competition and to join the NxtHacks’ mailing list: http://jnxt.org/nxthacks.

To find out the latest news and views about the NxtHacks Hackathon and to contact Jones himself, join the #nxthacks channel on Supernet Slack

Competition Rules

  1. Entrants may use any programming language or library they wish (e.g. C, Javascript, Node.js, PhP, Python, Java) to build an App for whatever purpose using the Nxt Api.
  2. Entries will be judged by the Nxt community on:

    –  Completeness (i.e. is the app fully functional?)
    –  Style
    –  Usefulness

  3. The App programming work should only take place between midnight Friday 31 July and midnight Sunday 2 August.
  4. Developers may submit as many entries as they wish but in practice, given the 48 hour time limit, it’s not expected that anyone will submit more than one…
  5. …especially since no team working is allowed – each App submitted must be the exclusive work of a developer working on their own!


1st place: 40’000 NXT
2nd place: 20’000 NXT
3rd place: 10’000 NXT

And a place in Nxt history as the winners of the inaugural NxtHacks Hackathon!


Further information:


(‘PeerExplorer is your gateway for Nxt infrastructure. Be a part of building the world’s most advanced decentralised open-source platform. Feel free to use the API. Don’t know what Nxt is? Take a look here!‘)



Nxt Source Code