Week 1 Assignment

assignment 1: To get latest BTC/USD price from Cronos Oracle. Plz check out app/read-btc-price.js

assignment 2: To post weather data to smart contract. Plz check out app/post-weather-data.js

addtional task 1-2: Write in text, plz check out ./Assignment 1 additional

addtional task 3: To make multicall in ONE call. Plz check out app/post-weather-data.js

Description

assignment 1: Get latest BTC/USD price from Cronos Oracle, log out in console every minute.

assignment 2: Get weather data for cities from https://goweather.herokuapp.com/weather/, then post the temperatures to smart contract WeatherRecord. I manage nonces manually to avoid nonce conflicts when sending multiple txs at the same time

addtional task 3: I deployed a MultiCall contract at 0x170832DF067101a2Cc2f273a75fbff34EbbD712E, use this contract to relay my calls to WeatherRecord contract

Getting Started

Dependencies

• nodejs
• ethers
• dotenv
• node-fetch

Installing

npm install

Executing program

execute assignment 1:

cd app

node read-btc-price.js 

execute assignment 2 & addtional task 3:

cd app

node post-weather-data.js 

License

This project is licensed under the [ISC] License