# Information Links

**URL:** https://forum.aboutcircles.com/t/information-links/253
**Category:** Circles general
**Created:** [August 3, 2017, 1:24pm UTC](https://forum.aboutcircles.com/t/information-links/253 "2017-08-03T13:24:36Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![Wouter](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.aboutcircles.com/wouter/32/54_2.png) [@Wouter](https://forum.aboutcircles.com/u/Wouter)
#### Post date: [August 3, 2017, 1:24pm UTC](https://forum.aboutcircles.com/t/information-links/253/1 "2017-08-03T13:24:37Z")

</div>

## Circles Concept

- [Most recent concept presentation (May 2016)](https://www.slideshare.net/MartinKppelmann/circles-basic-income-on-the-blockchain)

- [Concept presentation with the most slides (Jan 2016)] ([https://www.slideshare.net/MartinKppelmann/cirlces-berlin](https://www.slideshare.net/MartinKppelmann/cirlces-berlin))

- [Original discussion forum](https://aboutcircles.com/)

- [Original blog] ([https://ourbasicincome.wordpress.com/](https://ourbasicincome.wordpress.com/))

- [Meetup Berlin video with Martin Köppelmann explaining the idea behind Circles] ([https://www.youtube.com/watch?v=wKsQ-kERiH0](https://www.youtube.com/watch?v=wKsQ-kERiH0))

- [Github with basic info + sample contract code] ( [https://github.com/koeppelmann/circles](https://github.com/koeppelmann/circles) )

- [Ethereum project page with FAQ and sample contract code] ( [https://forum.ethereum.org/discussion/2228/circles-universal-basic-income](https://forum.ethereum.org/discussion/2228/circles-universal-basic-income) )

- [Reddit discussion](https://www.reddit.com/r/ethereum/comments/38dnfy/circles_universal_basic_income/)

- [ConsenSys blogpost](https://medium.com/@ConsenSys/basic-income-on-the-blockchain-fair-money-45662889077c)

- [Martin Köppelmann’s slideshare](https://www.slideshare.net/MartinKppelmann/presentations)

- [Concept site](http://www.cafe-grundeinkommen.org/circles/)

## Social Media

- [Twitter Account](https://twitter.com/aboutcircles)

##Cafe Grundeinkommen

- [Official website](http://www.cafe-grundeinkommen.org/)

- [Facebook page](https://www.facebook.com/CafeGrundeinkommen/)

- [Crowdfunding page (with video)] ([https://www.startnext.com/cafegrundeinkommen](https://www.startnext.com/cafegrundeinkommen))

## Early Prototype

- [Github repo](https://github.com/edzillion/circles_testnet)

- Walkthrough video by Ed  
Part 1: [https://www.useloom.com/share/1ea88b6a60e947b3b4dedae91ecec0c0](https://www.useloom.com/share/1ea88b6a60e947b3b4dedae91ecec0c0)  
Part 2: [https://www.useloom.com/share/9e0febe034804193a6aee9d3605689be](https://www.useloom.com/share/9e0febe034804193a6aee9d3605689be)

## Operational

- [Project Wiki] ([https://wiki.joincircles.net/](https://wiki.joincircles.net/))

- [CirclesUBI Github](https://github.com/CirclesUBI)

- [Rocket.chat server](https://chat.joincircles.net/)

- [Slack account](https://basicincomeberlin.slack.com) – deprecated, we use Rocket.chat now.

- [Trello board](https://trello.com/invite/b/DXDkUBuL/c07b50d80bc6cbe5f5ca29e288afbd00/circles-ubi) – deprecated, no replacement