---
# System prepended metadata

title: 'Blockdevs.ASIA Tech Talks #7'

---

# Blockdevs.ASIA Tech Talks #7

## When
- Thursday, December 03rd 2020, 5pm-6pm

## Where
- Zoom: https://us02web.zoom.us/j/85160750323 ( Meeting ID: 851 6075 0323 )
- Facebook: https://www.facebook.com/blockdevsasia
- Telegram: https://t.me/joinchat/HUNPKUjiqOMkzqTqAb7bYQ
- Youtube: https://www.youtube.com/channel/UCwJOo5gHnjL-jKrW1-15yhg

## Topics
- Shop talk: With blockchain developer and Blockdevs regular Ricsson Ngo
    - He is working on his own (solidity-based) DeFi project.
- Tools: 
    - Hardhat experiences of Chris: https://hardhat.org/
    - Subgraph: https://thegraph.com/
- Solidity
    - https://securityboulevard.com/2020/05/solidity-top-10-common-issues/
- Defi Tech: More on Flash Loans
    - Overview: https://hacked.slowmist.io/en/
    - Stories
        - https://medium.com/originprotocol/urgent-ousd-has-hacked-and-there-has-been-a-loss-of-funds-7b8c4a7d534c
    - Analysis: https://twitter.com/Tauras159/status/1327914150207447041
    - Howto
        - https://www.youtube.com/watch?v=wZGvejuhXEc
        - https://medium.com/coinmonks/flashloan-101-a35132a2bbf8
    - Remedy: 
        - https://blog.chain.link/flash-loans-and-the-importance-of-tamper-proof-oracles/
        - https://api3.org/

- Who knows...
    - Local block explorer



## Additional Links and notes
- (added during meetup)