18.5.18 - Cardano Foundation Newsletter

This month we are pleased to share with you some key updates:

  • The Cardano roadmap was updated with new items, such as a multi-currency Daedalus wallet and the launch dates for the Smart Contract testnets.
  • Michael Parsons, Chairman of Cardano Foundation, released a blog post on Cardano representations, affiliations and trademark policy.
  • The community continues to grow globally as community led meetups start in Tunisia, South Korea and Germany.
  • IOHK initiated meaningful discussions with the Ethiopian government in order to showcase how Cardano can accelerate the pace of development in Africa.
  • And finally, we feature an interesting Q and A from the Cardano Community on the Block Explorer.

Cardano Roadmap update


Updates for this month’s roadmap update were:

  • Paper Wallets will see a first version released shortly.
  • Daedalus Wallet Accounts and Multi-currency Ledger are two new roadmap items.
  • Stake pool testnet registration has been extended until the end of May - to give more opportunity for interested parties to register their interest. IOHK have received over 1500 applications and have been pleasantly overwhelmed by the great level of interest.
  • Smart Contracts testnets will start 28th May - with KEVM first, followed by IELE VM around July.

Click here for the roadmap

Interview with Sebastien Guillemot a Cardano community member


If you haven’t already seen them on YouTube, Sebastien makes video reviews of both the Cardano roadmap updates and weekly technical reports. We interviewed him to understand how he got involved with Cardano and his views on how we can help grow the community further.

Read the forum post.

Cardano representations, affiliations and trademark policy


Michael Parsons, Chairman of Cardano Foundation updates the community on Cardano representations, affiliations and trademark policy in his latest blog post.

Read the blog post

How Cardano is helping development In Africa


Earlier this month IOHK had a successful few days in Addis Ababa, Ethiopia. Meetings were held between IOHK and the Ministry of Science and Technology to discuss how Cardano could help support the countries economic development. Read more about the trip below.

Read the forum post


Cardano Foundation proudly attended the Transform Africa Summit 2018, which was held in Rwanda last week. Steve Wagendorp, Head of Technical Operation at Cardano Foundation, who is originally from Cape Town, South Africa was able to attend the summit amongst 4000 other participants including Heads of State and Government, industry leaders, entrepreneurs and academia. Charles Hoskinson also spoke at the event and lots of exciting discussions took place.

Cardano meetups across the globe


We are proud to see a thriving global Cardano community that is continuing to grow in size. Meetups are a big part of driving things forward and we are very encouraged to see community led meetups taking off in Tunisia, South Korea and Germany. If you’re interested in starting a Cardano meetup local to you, have a read through our forum post “Hosting your Cardano Meetup and how to get started”.

Read the forum post

Cardano Foundation is also proud to announce a few upcoming meetups. Please join us in Munich, Germany on June 12 and in Zurich, Switzerland on June 13.

Community questions

This week’s question comes from a Japanese community member who contacted us through our Help Centre on how to read the information displayed under a transaction in the Cardano Block Explorer.

Firstly, what is a Block Explorer? A Block Explorer allows anyone to search addresses, transactions, epochs and slots that have taken place on a blockchain. IOHK have built a block explorer specifically for Cardano allowing anyone who wishes to search transactions and check wallet balances.

Now, to get back to the question, let’s take for an example this transaction:


Every transaction has an ID, and it is unique on the blockchain. On the left hand side, where you see 3 addresses, you will find the inputs. These lead into the 2 output addresses. One output address is the receiver address and the other is the “change address”, where the remaining Ada from the input addresses goes back to the sender’s wallet.

As for the input, you will sometimes see multiple addresses listed. This is because your wallet is a collection of addresses (in unspent transaction outputs or UTxO) which hold Ada and out of which, you can spend or send funds from. The wallet will choose inputs when you make a transaction.

For example:

Address 1: 1 Ada

Address 2: 10 Ada

Address 3: 100 Ada

If you want to send 105 Ada, your wallet would choose address 2 and 3 as inputs and send back 5 Ada to your change address. That is why transactions need multiple inputs.

The values on the rightmost side correlate with amounts of the inputs.

For more information on how to use the Cardano Block Explorer, have a read through our Help Centre article.

General Data Protection Regulation (GDPR) notice


Last but not least, we would like to inform you of some necessary actions you will need to carry out to continue your subscription to all Cardano Foundation newsletters and emails. You may be aware that a new law is coming into effect on the 25th May this year, called GDPR, or The EU General Data Protection Regulation. GDPR is all about giving consumers more control on how your data is used.

Keep an eye out in your inbox for an email next week from us asking you to opt-in again and give us permission to keep sending you news, information and vital updates about Cardano. Please note that if you do not tell us you want to still receive information we will be deleting your details from our records. Please note that this applies to all of our subscribers, even if you reside outside of the European Union. We hope to see you all on the other side!


Hi, When is the paper wallet released?

Hello! No confirmed date yet but you can see the progress here >> https://cardanoroadmap.com

Thank you for your information. Will it launch in May?