July has brought significant progress, such as Cardano Foundation’s Haskell Library audits and the latest from IOHK including a roadmap update and the IELE testnet launch. In this newsletter, you will find a roundup of these updates and other announcements. Enjoy!

Cardano Foundation’s Haskell Library Audits

Did you know that there are almost 400 Haskell libraries being used in Cardano SL? Libraries are collections of resources, such as code or documentation, that are used across many projects to implement common functions and behaviour. A software’s code can be susceptible to bugs or vulnerabilities through these library dependencies. As a commitment to technical rigour and the wider Haskell community, Cardano Foundation together with FP Complete will release audit reports reviewing various Haskell Libraries as they continue to review the development of Cardano more specifically. Learn more about these audits from our blog post written by Steve Wagendorp, Head of Technical Operations at Cardano Foundation.

Roadmap Update

In the latest roadmap update, progress was made across 10 project items as well as the inclusion of Daedalus 0.11 and Cardano 1.3. Daedalus 0.11 works to improve the user experience and also will include fixes in preparation for the upcoming release of Daedalus for Linux. Cardano SL 1.3 will include significant improvements to the speed of syncing the blockchain.

Charles’ Video Update

On Monday, Charles Hoskinson posted a video where he gave an update on the various ongoing projects within Cardano. You can watch the video by clicking the link below.

IELE Testnet Launch

IOHK recently launched the second Cardano testnet, which is for the IELE virtual machine. It is designed to execute smart contracts on the Cardano blockchain. If you are a developer, these testnets will allow you to try writing smart contracts on Cardano and familiarise yourself with how they work in a test environment.

Developers can give feedback to IOHK on the ease of use and functionality to help IOHK make early improvements. To find out more about the IELE testnet launch, read IOHK’s blog post here and check out the testnet website for requirements, documentations and tutorials.

What is Proof-of-Stake?

The latest video from Professor Aggelos Kiayias, chief scientist at IOHK, gives us an insight into what proof-of-stake is. He introduces Ouroboros, the proof-of-stake algorithm designed for Cardano and how it compares to Proof-of-Work protocols.

The Cardano Wallet and Coin Selection



Image Credit

At the recent Cardano community meetup in Rotterdam, Edsko de Vries, Haskell consultant for IOHK, gave a presentation about the Cardano wallet. Specifically, he explained what UTxO is and how the Cardano wallet selects coins for transactions. Read our summary on his presentation in the Cardano forum!

Cardano Meetups

In this newsletter, we bring news of a Cardano community meetup from Port Harcourt, Nigeria! Read a recap from community organizer, Joshua, on what they discussed and what they hope to achieve from their meetups moving forward!

And in another part of the world, we have two new Cardano meetup groups that have kicked off! Click the links below to join these groups and keep up to date on upcoming events:

Honolulu, Hawaii

San Diego, California

Community Questions



Image Credit

In this newsletter, we take a really important question from the community that concerns safety and security of our members. While the online world provides an incredible opportunity for connecting people, it is also a place where scams are rife. Blockchain and crypto-communities are no different. We’ve had many community members come to us asking:

“I think I found a scam website…what should I do?”

Answer: From your suggestions, we have created a new email address (report@cardano.org) for reporting scams. This includes any websites that are impersonating Cardano or its contributing organizations and wallets, fraudulent social media accounts, users who are not following the community rules on our social platforms or anything else that may concern you. This email address is closely monitored and allows us to be quickly alerted. We appreciate your cooperation in creating a safe place for our entire community.

Learn more about our report email

To receive the newsletter straight to your inbox, subscribe on our website! Go to cardano.org, scroll to the bottom, and fill in the subscription form. It’s that easy!