# Workshop: Ethereum Transactions - #3 Event Logs

- Channel: [Ethereum Malaysia](https://streameth.org/ethereum-malaysia)
- Date: 2021-10-09
- Duration: 58:41
- Topics: ethereum, blockchain, kuala lumpur
- Watch: https://streameth.org/watch/yt-fvnM7OTF-ME
- YouTube: https://www.youtube.com/watch?v=fvnM7OTF-ME

## Description

This is Part 3 in a series of workshops exploring transactions in Ethereum. Other sessions include the following topics:
#1 Verifying contracts (watch here: https://www.youtube.com/watch?v=awd5kGPI1fo)
#2 Decoding input data (watch here: https://www.youtube.com/watch?v=jkOGavXTuu0)
#4 Internal transactions
#5 Execution trace

Areas covered in this workshop:
- Why event logs?
- Fields: topic0, topic1, topic2, topic3, data
- Walk through how a contract emits events
- Compare the difference when it is ‘manipulated’

Slides:
https://docs.google.com/presentation/d/1LpY5cKM5qg_rC2dUtckkZfTpdcRoRDCyUdS_SeV57Dc/edit#slide=id.p

Prerequisites:
- Have watched Parts 1-2: 
https://www.youtube.com/watch?v=awd5kGPI1fo
https://www.youtube.com/watch?v=jkOGavXTuu0