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Building tokenized IoT devices - jollen

tags: `COSCUP2020` `入門` `TR409-2`

歡迎來到 https://hackmd.io/@coscup/2020 共筆

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flowchain 給IOT用的blockchain系統

起源：bitcoin 的 transaction 交易廣播技術

bitcoin transaction 耗能過大，如何放到IOT中？

應用拜占庭共識結合 CDN 的概念

網路階段發展(?)
internet -> www -> cloud -> mobile -> blockchain -> token

hash timestamp 用hash代表時間來chain
hash types:

brute-force hashing(bitcoin)
memory-hard having(ethereum) 牛車去拉法拉利XD
chaind hashing(tokens)

wireless consistency 在IOT中是很大的挑戰 [churn]

隨時會斷線 (基地台轉移, 天氣因素等等)

分散式系統（葡萄藤問題）解決方案: read your writes

IOT裝置有一致性、安全、確認來源、確保隱私=非常有價值

IOT payment: tesla開到麥當勞制動幫你付錢，車子幫你付錢

由eth提供hash給IOT裝置當consistency 也就是私有鏈的概念

flowchain+IPFS -> 儲存資訊 (sia coin)

Cheatsheet

Syntax	Example	Reference
# Header	Header	基本排版
- Unordered List	Unordered List
1. Ordered List	Ordered List
- [ ] Todo List	Todo List
> Blockquote	Blockquote
Bold font	Bold font
Italics font	Italics font
~~Strikethrough~~	~~Strikethrough~~
19^th^	19^th
H~2~O	H₂O
++Inserted text++	Inserted text
==Marked text==	Marked text
[link text](https:// "title")	Link
![image alt](https:// "title")	Image
`Code`	`Code`	在筆記中貼入程式碼
```javascript var i = 0; ```	`var i = 0;`	在筆記中貼入程式碼
:smile:		Emoji list
{%youtube youtube_id %}	Externals
$L^aT_eX$	L^aT_eX
:::info This is a alert area. :::	This is a alert area.

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