FAQ: Build your own Mini-Blockchain! - Creating Blocks

This community-built FAQ covers the “Creating Blocks” exercise from the lesson “Build your own Mini-Blockchain!”.

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This exercise can be found in the following Codecademy content:

Introduction to Blockchain

FAQs on the exercise Creating Blocks

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Inside the __init__() method, create a timestamp instance variable that stores the current date and time.

Not sure what I’m doing wrong here. The error is ‘An instance of timestamp is not defined inside the Block class.’

I don’t know if you figured this out yet, but take out the first datetime. Should look like this:

timestamp = datetime.now()

It’s kind of redundant, I know, but that’s what worked for me.

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hey why do we use self.transactions in this block class ? can someone explain

Try this it should fix your problem!