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advanced_knowledge/events/README.md Normal file
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## events, tx, topics
<br>
* solidity provides two types of events:
- anonymous: 4 topics may be indexed, and there is not signature hash (no filter)
- non-anonymous (default): up to 3 topics may be indexed, since the first topic is reserved to the event signature (filter)
<br>
---
### ethereum transactions
<br>
<img width="570" src="https://user-images.githubusercontent.com/126520850/227066769-507080bb-071a-45a7-b385-82b502a963a7.png">
<br>