Oracle System:
Version: multi-collateral V1.5
Get and calculate price from off-chain source, and then set for the Lendf.me System.
Overview:
For version 1.5, we support assets are:
- DAI
- HBTC
- HUSD
- imBTC
- PAX
- TUSD
- USDC
- USDT
- USDx
- WBTC
- WETH
Feeding price every 10 minutes, we try to get price from these exchanges:
- Binance
- Bitfinex
- Bittrex
- HitBTC
- Huobi
- Gate.io
- KuCoin
- Kyber
- Oasis
Intervals
There will two conditions:
- every 12 hours
- price floats more than 1% every 5 minutes
if the new price meets either of these two conditions, we will set a new price.
Value
Calculate median and compare the median value to each value, if they differ by less than 1%, we think all prices are valid, so we use the median as the price to feed.
Notice: more details on median calculations, you can find at here
Notice: when we set the price has exceeded the price of the pendingAnchor by ±10%, the final price will be ±10% of the pendingAnchor price, if admin does not update value of the pendingAnchor, we can not set a price that exceeds ±10% in an hour.
Guide:
Install
~/$ git clone https://github.com/Lendfme/oraclesystem.git
~/$ cd ./oraclesystem
~/oraclesystem$ npm install
Set config
~/oraclesystem$ mv ./.example.env ./.env
According to your favour, edit these files:
.env
./src/utils/config/base.config.js
Run
~/oraclesystem$ node syncPrice.js
~/oraclesystem$ node priceFeed.js