I have a question regarding : substrate-node-template (https://github.com/substrate-developer-hub/substrate-node-template).
I have run the node together with the frontend and I noticed there is some activity on the blockchain event without interaction from the user. Where is this activity configured in the source code?
What are current and finalized blocks? Can anyone explain please?
Node template generates blocks even if there is no transactions happening. I would encourage you to go through this section of the Knowledge Base to understand how consensus and block generation works https://substrate.dev/docs/en/knowledgebase/advanced/consensus#consensus-in-substrate
EDIT: if you are curious in how you can make your node to only generate blocks when there are transactions happening this is a good resource.
Now, as a short answer for what are current and finalized blocks, the ones under the current/best name are the ones that have been authored. And the finalized ones, are the ones which the consensus mechanism consider final.
You can find a formal definition of the protocols in web3 foundation research page.
