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I'm taking up a project to build a software in python to mine cryptocurrency (preferably bitcoin). I have an overview of the computation that needs to be done.

I would like to know how nodes fetch unconfirmed transactions.

RedGrittyBrick
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Sarath Jyothis
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  • I think that's too big a question to be answerable here. You could break your question down into much smaller parts and research those separately and ask questions here about specific individual points. See [what is mining](https://bitcoin.stackexchange.com/q/148/13866) etc. – RedGrittyBrick Feb 08 '22 at 16:53
  • @RedGrittyBrick Thanks! – Sarath Jyothis Feb 10 '22 at 11:19
  • So, there are three sub problems to focus on here: 1.) Fetching unconfirmed transactions 2.) Finding the nonce for hashing based on the difficulty and creating a new block 3.) Submitting/broadcasting the new block to the network for verification. I'm stuck at subproblem 1 and 3 from a programming point of view. – Sarath Jyothis Feb 10 '22 at 11:24
  • You seem to be struggling a little. I will edit your question for you -- though you can do this yourself. If you don't like my edits you can use the "rollback" option under "edit". – RedGrittyBrick Feb 10 '22 at 11:49
  • Thanks @RedGrittyBrick for making the question more appropriate. I'm gathering a lot of info from the materials provided. – Sarath Jyothis Feb 18 '22 at 08:18

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In brief you would use your Bitcoin libraries functions to perform peer discovery and then periodically communicate with a few peers to collect data.

Your question isn't an exact duplicate of any question I can find but existing answers to the following questions will help:

Other useful resources

RedGrittyBrick
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