Data

◼️41/100: Block-by-Block

One thing I learned about: The steps of the blockchain verification flow

The three main stages:

1. Transaction lifecycle
2. Block creation
3. Block propagation

🔽📝Breakdown🔽

Learn & build with web3 data: https://skool.com/data3

Transaction flow

1. User signs a transaction and sends it to a node
2. Node verifies the transaction
3. Node broadcasts the transaction to the mempool
4. Other nodes also validate the transaction

A few things I am still unclear about:

- How do nodes find each other?
- Where is the mempool? :)
- The steps of the consensus mechanism?
- How does the network pick the winning block/validator?
- How does the network handle node desynchronization?

Block propagation and consensus

9. Other nodes receive and verify new blocks
10. They append the block to their local chain
11. The longest chain becomes the new reality

Block creation and proposal

5. Validators/Miners select transactions from the mempool
6. They create a candidate block
7. The network picks the winning block based on the consensus mechanism.
8. They broadcast the winning block to other nodes