The presentation will provide an introduction to the Concordium blockchain and how it differs from other blockchains. It will also cover the Rust programming language ecosystem and why Rust is useful for developing smart contracts on Concordium. The live demo portion will walk through installing Rust, exploring a sample smart contract, and testing smart contracts. There will then be a Q&A session with the audience.

1. The promise of Blockchain for Business
Copyright Concordium™ 2021-2022
concordium.com
Bahnhofstrasse 20
6300 Zug Switzerland

2. Suhas Hegde
Team Concordium
Tech Community Programs Manager
Ernest Kissiedu
Concordium Rust Advocate

3. What you can expect in the next one hour?
Presentation :
- Introduction to Concordium Blockchain, why we need Concordium and how it sets itself apart.
- Rust Ecosystem , and all the important Rust Resources and why we need Rust for Concordium
Smart Contracts.
Live Demo :
- Opening: Installing the Rust toolchain, setting up with Concordium std library and setting up your
development environment. [ Live Demo ]
- Explore: A walk-through of the Concordium piggy bank smart contract and a breakdown of some
basic Rust programming concepts using the piggy bank codebase. [ Live Demo ]
- Close: A walk-through of how to test your smart contract using the Cargo testing suite. [ Live Demo ]
- Q&A with Audience

4. concordium.com
A public,
permissionless privacy-protecting
blockchain, with built-in ID.

5. Industry-research collaboration

6. Identity primitives at the protocol level.
Preserves anonymity, unlinkability.
Fast, secure finality at scale.
Blocks declared final within seconds.
Regulatory compliance by design.
De-anonymization based on court-orders.
Reliable uptime via two-layer consensus design.
Liveness/safety trade-off.
Energy efficient Proof-of Stake Mechanism.
Features

7. Public blockchains
Public Permissionless blockchain with ID
Private and Permissioned blockchains
Anyone can join a public blockchain e.g. Ethereum, but with significant
drawbacks such as massive computational power (PoW) usage,
anonymity- and regulatory issues, no privacy and little security.
Concordium builds on the advantages of existing blockchains but fixes
the drawbacks with the addition of sustainability (PoS), and regulatory
compliance readiness (ID), consensus and finalization as a service.
Concordium builds on the advantages of existing blockchains but fixes
the drawbacks with the addition of sustainability (PoS), and regulatory
compliance readiness (ID), consensus and finalization as a service.
Delivering leadership
in a new ID-based,
permissionless
blockchain category.

8. Ground-breaking
consensus mechanism
Concordium’s two-layer consensus
mechanism combines a Nakamoto-style
blockchain with an innovative Byzantine Fault
Tolerant (BFT) finalization layer for fast, secure
and reliable transactions.

9. Concordium provides reference interface
wallet apps and tools to help users make
the most of the Concordium Platform.
Rust based Smart contracts support.
Compiles to WebAssembly (Wasm).
Other languages to follow.
Concordium reference
products and tools

10. Fast and scalable
Given the two-layers, Concordium achieves the best of both worlds,
and doesn't compromise speed for security or visa versa.
High Transactions Per Second (TPS) meets the needs of business
applications on a global scale*.
Transactions on the Concordium Platform are finalized and
immutable within a short period of time and without relying on the
creation of subsequent blocks .
Using a novel sharding mechanism that operates in tandem with our
finality layer, Concordium can coordinate any number of
sub-blockchains in parallel, each much faster than standalone.
Secure and cost-effective
Proof of Stake mechanism coupled with Community BFT consensus
ensures resource-efficient and secure transactions under a variety of
adverse conditions
1000+ TPS under ideal circumstances and going towards no
limitations when sharding is implemented

11. THE CONCORDIUM PLATFORM

12. On-chain Identity
Regulatory
Concordium is the only public,
permissionless blockchain,
that also assist businesses
in complying with regulations
Compliance and privacy
A user’s identity is stored off-chain and remains private
unless it is revealed in response to a court order via
established legal channels. The Concordium Foundation
coordinates the process of storing and revealing
encrypted identities.
Designed for global operations
Concordium offers a global solution that integrates
with local regulations and allows identities to be
stored across different jurisdictions.

13. On-chain Identity system
Privacy replaces
anonymity when transacting
on the Concordium Platform
Every transaction is
cryptographically linked
to the verified ID object
of the user, but undisclosed
● Every user on the Concordium network is
ID-verified by independent third parties
● Zero knowledge proofs provide key ID while
staying private. Eg. prove you are of legal age
without providing your actual age
● The identity system can be utilized by businesses
and persons for all kinds of devices and products
● Disclosure of attributes are fully flexible.
● The user can decide to stay encrypted or
publicize elements of the ID on-chain
● Adjustable account policies available (such as
blocking receipt of payments from sanctioned
countries etc.)

14. Sharding for
scaling, for
interoperability
and sensitive
data protection
Energy efficient
Proof-of-Stake protocol
Business tasks
supported by easy-
to-use smart contracts
(WebAssembly, Rust
etc.)
Cost-effective, stable
transaction fees for
predictable pricing
regardless of GTU price
movements
ID supports Regulatory
compliance; Privacy
with accountability
vs. anonymity
Identity at the
protocol level
Finality layer ensures
availability and security
under catastrophic
network failures
Fast, secure,
immutable consensus
and finality at scale
Benefits for business applications
Concordium offers a wide range of benefits to businesses that need the rigor of a public, permissionless
blockchain and will not compromise on security, speed, sustainability and regulatory compliance.

15. Distributed database for ID information. The
tech has extensive use cases in this area of
record keeping.
● ID fraud
● Civil-registry and
● ID records
● Voting
Identity
Code on blockchain which executes
automatically when certain conditions are met.
● Insurance payout
● Cash-equity trading
● New music release
Smart Contracts
Distributed database for storing data.
● Land Title
● Food safety & origin
● IP management
StaticRegistry
Potential Concordium Use Cases
Distributed database that updates
as assets are exchanged.
● Fractional investing
● Drug supply chain
Dynamic Registry
Distributed database that updates as
cash or crypto payments are
exchanged.
● Cross-border P2P payments
● Insurance claims
Payment Infrastructure
Consistent store and real time trade
of value.
● Blockchain as a tokenization
service
Stable Coin

16. Smart contract
and dApp developers
Concordium´s broad
distribution model
Concordium Blockchain
White label solutions
for strategic partners
Consensus / Finalization
as-a-service
for Private Shards
● www.concordium.com.
● Smart contract boutiques.
● Community engagement.
● It-application providers.
● Advisors- and consultants.
● Permission based blockchain platforms
who wants to add public blockchain.
● Permission based and private shards
can use Concordiums consensus /
finalization as-a-service.

17. We will be launching the DevX Initiative next month.
The DevX Initiative
Concordium Blockchain
"Leave the past for the competition, we will manage the future!"
Concordium invents and deploys the necessary frameworks to host and
enable the creativity and the productivity of the Elon Musk, Steve Jobs,
Larry Page and Sergey Brin of Tomorrow!

18. Over to my dear friend Ernest, who will give you an
introduction to Rust and the tooling available and what
you need, to get started.

19. The Rust Programming Language

20. Rust is a systems programming language that targets
Safety, Concurrency, and Speed.
Rust generally sits in between C/C++ speed
in benchmarking.
Rust is mixed multi paradigm programming language that
takes a lot of different features and concepts from various
languages such as (Scala, Ruby, C/C++, JavaScript).
1
2
3

21. ● Rust Story Begins at Mozilla.
● Rust was initially developed to solve the memory safety problems that kept coming
up in the C++ codebases.
● Rust employs an ethos which became its USP that safety isn’t optional, dangerous
unsafe code should be obvious.
● Rust has the imprint of many other languages from people who came into Rust early
on from other communities.
● Rust hit a stable version one in 2015.

22. Rust in Concordium
and
Why Rust for Smart Contracts

23. Rust is used by Concordium and a number of Blockchain projects at
both the protocol layer and at the application / smart contract layer…..
Why?

24. The Type System
A well established ecosystem of tooling and
support, so you don’t have to reinvent the
wheel.
Wasm Support and Tooling
Computational Reliability
for Maths and Cryptography

25. Rust is available for Windows, Linux, MacOS, and WSL
Rust is installed and managed by the tool Rustup, a new version of the Rust stable
compiler is released every 6 weeks.
Rustup will install some the essentials of the toolchain such as:
● Rustc - The Compiler
● Cargo - The Package Manager
● Rust-std - The Standard Library
Getting Started with Rust and Concordium

26. Concordium Rust Standard Library and Rust API
● Cargo Concordium is the tool for developing smart contracts for the Concordium
blockchain with Rust. It can be used for compiling and testing smart contracts.
● This is a crate that provides you everything you need to write a Smart Contract
in Rust on the Concordium platform.
● The library is linked to the Rust Standard library by default which allows you to
utilise everything the Rust language has to offer.
Getting Started with Rust and Concordium

27. Cargo is the Package manager and build system for Rust
● A Rust Codebase is a package of crates.
● Cargo exist to ensure that you will always get a repeatable build and
process it avoids the need for makefiles and complicated scripts.

28. Clippy
Rust Fmt
Rust Godbolt
Tools
Rust Playground
https://play.rust-lang.org/
Explaine
https://jrvidal.github.io/explaine.rs/
Cheats.rs
Resources
The Rust Book
Exercism (Rust Track)
Rustlings
Rust by Example
Learning

29. The Rust community ecosystem is the key
to its popularity and success
Rust Discord
Concordium Discord
Discord
Rust Cryptography Working Group
Rust Formal Verification Working Group
Rust Async Working Group
Rust Embedded Working Group
Working groups
Rustfest
RustConf
CloudNative Rust Days
RustLab
Conferences