Blockchain and IoT / Atlanta BlockChainConf
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This document discusses how blockchain and smart contracts could be used for machine-to-machine communication and agreements in areas like robotics, autonomous vehicles, and home automation. It describes how the Ethereum Virtual Machine (EVM) provides a standardized, deterministic environment for executing smart contracts that could help address issues with hardware differences, security, and updates in IoT applications. The document suggests using a private or side blockchain to allow IoT devices to securely communicate and interact via smart contracts without needing to run a full node or deal with proof-of-work mining.
Blockchain and IoT / Atlanta BlockChainConf
- 1. 1 Blockchain is for Robots i.e not for Humans Igor Artamonov ETCDEV Atlanta, GA, 2018
- 2. 2 Software engineer, distributed systems, data processing, security, Java Followed Ethereum Classic blockchain when Ethereum ETH made the fork in 2016, which violated base principles of public blockchain. Founder of ETCDEV, a leading Ethereum Classic development company with a strong focus on decentralized computing providing long term support for the ETC blockchain. Igor Artamonov
- 3. Going to talk about what is blockchain, smart contracts, IoT 3
- 4. What is Smart Contract? 4
- 5. 5 Token • A code that keeps track of a balance of its users • User A can send X tokens to user B • getBalance(A) • transfer(A, B, X) -> • balance A minus X • balance B add X
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- 8. A function that operates data stored on blockchain. No UI, no external dependencies, just blockchain. 8
- 9. 9 "A smart contract is a computer protocol intended to digitally facilitate, verify, or enforce the negotiation or performance of a contract.» From Wikipedia Smart contracts were first proposed by Nick Szabo, who coined the term in 1994
- 10. Examples of Legal Smart Contracts 10
- 11. 11 Insurance You pay to a Smart Contract and in the event of a covered loss you get compensation from that contract. But the event happens offline, people are trusted parties in that schema. And then can talk to each other w/o blockchain
- 12. 12 Tokens A Smart Contract provides you a functionality of sending/receiving some digital assets
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- 14. Most of the people understand Smart Contract in legal terms. Not always true, sometimes it is just a code executed on blockchain. In many cases humans are not involved. In most cases there are no legal agreement and it’s not enforceable. 14
- 15. Smart Contracts is a program executed on blockchain, but the term «Contract» influenced the industry too much, everyone is trying to issue a token or make some legal agreement on blockchain now :( IBM Hyperledger has term «chaincode» which maybe better represents the idea 15
- 16. Maybe it’s not for humans? 16
- 17. A machine-to-machine protocol for communication and agreements? Robotics/autonomous cars/home automation? 17
- 19. JVM & Java were invented for devices Write Once, Run Anywhere 19
- 20. Unfortunately it was also Write Once, Debug Everywhere 20
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- 22. No Timezones in EVM 22
- 23. No Filesystem in EVM 23
- 24. No Networking in EVM 24
- 25. No Random Values in EVM 25
- 26. No Floating Point in EVM 26
- 27. Sometimes to move into one directions you need to be limited in may other directions 27
- 28. 28 Ethereum Virtual machine is close to mathematical function, code executed in it will always produce exactly same result for same inputs, and it works in a fully isolated environment. It’s a fully deterministic, architecture neutral, portable and secure. Can recover from issues, data loss. Easy to debug. Easy to build fault tolerant systems.
- 29. 29 SputnikVM A standalone & embeddable EVM, compatible with most of Ethereum based blockchains. IoT is one of the main targets Open Source, Apache 2
- 30. What problems of IoT can be solved or what can be improved? 30
- 31. Hardware Difference 31 Basically what what proposed by JVM, a developer shouldn’t care about underlying hardware. A developer writes, tests and debugs code using one OS + hardware, run on another platform and it works in exactly same way
- 33. Blockchain is extremely slow Database 33
- 34. Blockchain is extremely slow VM 34
- 35. Using blockchain you’re paying a high price Price of what? 35
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- 44. Hardware + OS 44 It’s hard to write code for different hardware (and operating system) Easier to outsource as much as possible to a central server with more comfortable environment EVM can be that comfortable environment to execute business logic
- 45. Security 45 Security is hard, especially when device is not under your control Easier to have central server with all security stuff Blockchain is designed for insecure environments
- 46. Updates 46 End users never do updates, automatic updates are hard Central server is always up-to-date Smart contract based logic easier to update
- 48. 48 • Separate blockchain for a network of devices, maybe private and isolated, maybe a sidechain • Proof-of-Work is too expensive for such kind of applications, so some trusted setup • Some devices can’t afford a full node, but can be powerful enough to send transactions to the network • With trusted local network you can listen to events on EVM running on another device
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- 53. Thank You 53