Elixir_and_Blockchain_-_a_Perfect_Match.pdf

Elixir might not be the first thing you think of when you're thinking about the world of cryptocurrencies, but there are reasons to consider using it in your stack. Miloš will explain how he used Elixir to interact with Ethereum Smart Contracts to make a reliable backend for a new decentralized finance project from Mainframe.

OBJECTIVES

Demonstrate how Elixir can be used to build a service that interacts with Ethereum and other blockchains, in order to make an app that works with crypto transactions.

AUDIENCE

Crypto enthusiasts and skeptics, developers interested in using the blockchain or hearing about the world of decentralized finance, Elixir fans who would like to see the language being used in novel ways.

Transcript

1. Elixir and Blockchain — a Per ect Match? Miloš Mošić ht ps://milosmosic.com
2. Mainframe Miloš Mošić ht ps://milosmosic.com
3. MainframeOS Miloš Mošić ht ps://milosmosic.com
4. Genesis Block Miloš Mošić ht ps://milosmosic.com
5. Spoiler Aler : Miloš Mošić ht ps://milosmosic.com
6. Spoiler Aler : We chose Elixir Miloš Mošić ht ps://milosmosic.com
7. Ethereum 101 Miloš Mošić ht ps://milosmosic.com
8. Ethereum 101 What is Ethereum? Miloš Mošić ht ps://milosmosic.com —
9. Ethereum 101 What is Ethereum? What is a Blockchain? Miloš Mošić ht ps://milosmosic.com — —
10. Ethereum 101 What is Ethereum? What is a Blockchain? What are Blocks? Miloš Mošić ht ps://milosmosic.com — — —
11. Blocks in a Blockchain Miloš Mošić ht ps://milosmosic.com
12. How of en do new blocks appear? Miloš Mošić ht ps://milosmosic.com
13. How of en do new blocks appear? 15 seconds Miloš Mošić ht ps://milosmosic.com
14. How of en do new blocks appear? 15 seconds (usually) Miloš Mošić ht ps://milosmosic.com
15. Miloš Mošić ht ps://milosmosic.com
16. What is Ethereum again? Miloš Mošić ht ps://milosmosic.com
17. Miloš Mošić ht ps://milosmosic.com
18. Smar Contracts Miloš Mošić ht ps://milosmosic.com
19. What are Smar Contracts? Computer Programs Immutable Deterministic Run on EVM Decentralized World Computer — — — — — Miloš Mošić ht ps://milosmosic.com
20. Popular Smar Contract use cases Miloš Mošić ht ps://milosmosic.com
21. Popular Smar Contract use cases Creating a new token Miloš Mošić ht ps://milosmosic.com —
22. Popular Smar Contract use cases Creating a new token Initial Coin Of erings (ICOs) Miloš Mošić ht ps://milosmosic.com — —
23. Popular Smar Contract use cases Creating a new token Initial Coin Of erings (ICOs) Decentralized Exchanges Miloš Mošić ht ps://milosmosic.com — — —
24. Emerging Smar Contract use cases Fun Miloš Mošić ht ps://milosmosic.com —
25. Emerging Smar Contract use cases Fun Utility Tokens (Brave & BAT) Miloš Mošić ht ps://milosmosic.com — —
26. Emerging Smar Contract use cases Fun Utility Tokens (Brave & BAT) Decentralised Finance (Lending/Borrowing) Miloš Mošić ht ps://milosmosic.com — — —
27. Fun? Miloš Mošić ht ps://milosmosic.com
28. ht ps:// .cryptokit ies.co/ Miloš Mošić ht ps://milosmosic.com
29. Creating your own token Miloš Mošić ht ps://milosmosic.com
30. Smar Contract Programming Languages Solidity Serpent Vyper Mutan Bamboo Flint Lisp Like Language (LLL) — — — — — — — Miloš Mošić ht ps://milosmosic.com
31. ht ps://github.com/OpenZeppelin/openzeppelin-contracts Miloš Mošić ht ps://milosmosic.com
32. pragma solidity ^0.4.21; import "openzeppelin-solidity/contracts/token/ERC20/StandardToken.sol"; // CodeBEAMToken is a basic ERC20 Token contract CodeBEAMToken is StandardToken { string public name; string public symbol; uint32 public decimals; uint256 public totalSupply; constructor() public { name = "Code BEAM Token"; symbol = "BEAM"; decimals = 18; totalSupply = 1000000 ether; // 1 million, 18 decimals (ether = 10^18) owner = msg.sender; balances[msg.sender] = totalSupply; emit Transfer(0x0, msg.sender, totalSupply); } } Miloš Mošić ht ps://milosmosic.com
33. What tools are typically used to build Smar Contracts? Truf le Suite: Truf le Ganache Drizzle — — — — ht ps:// .truf lesuite.com/ Miloš Mošić ht ps://milosmosic.com
34. What tools are typically used to interact with Ethereum? web3.js ethers.js eth.js — — — Miloš Mošić ht ps://milosmosic.com
35. Back to Elixir Miloš Mošić ht ps://milosmosic.com
36. What tools are available in Elixir? ethereumex exw3 — — ht ps://github.com/hswick/exw3 Miloš Mošić ht ps://milosmosic.com
37. Are there other projects which use Elixir? Miloš Mošić ht ps://milosmosic.com
38. BlockScout ht ps://blockscout.com/eth/mainnet/ Miloš Mošić ht ps://milosmosic.com
39. New Blockchains Ellipticoin — Miloš Mošić ht ps://milosmosic.com
40. New Blockchains Ellipticoin æternity — Miloš Mošić ht ps://milosmosic.com —
41. Mana Full Ethereum node implementation Aims to be al ernative to Geth and Parity 100% implemented in Elixir — — — Miloš Mošić ht ps://milosmosic.com
42. Benefits of using Elixir Miloš Mošić ht ps://milosmosic.com
43. Benefits of using Elixir Managing many concurrent connections Miloš Mošić ht ps://milosmosic.com —
44. Benefits of using Elixir Managing many concurrent connections Dealing with failures of those peers Miloš Mošić ht ps://milosmosic.com — —
45. Benefits of using Elixir Managing many concurrent connections Dealing with failures of those peers Serving many requests as a gateway Miloš Mošić ht ps://milosmosic.com — — —
46. Benefits of using Elixir Managing many concurrent connections Dealing with failures of those peers Serving many requests as a gateway Quickly reacting to blockchain events Miloš Mošić ht ps://milosmosic.com — — — —
47. Cases where Elixir is not suitable Proof of work mining — Miloš Mošić ht ps://milosmosic.com
48. Cases where Elixir is not suitable Proof of work mining (But this can be of loaded to NIFs) — Miloš Mošić ht ps://milosmosic.com
49. Elixir and Blockchain — a Per ect Match? Miloš Mošić ht ps://milosmosic.com
50. Thank You! Questions? Miloš Mošić ht ps://milosmosic.com