39 thoughts on “Bitcoin Q&A: What is the role of nodes?”

  1. wow what a fantastic spokesman for bitcoin didn't we get lucky! been following andreas for years, thx andreas shame its not longer.

  2. Thanks for another informative video. I have a couple questions though. 1) Should I run a full node behind a vpn? 2) I've opened port 8333 and have 40 active connections. How many connections can I expect and will this interfere with online gaming or hogging the bandwidth?

  3. #aantonop  I understand that miners receive BTC for the work they do in creating the currency, which is well deserved as they not only have to purchase very expensive hardware, but have to keep updating it regularly to keep pace with the ever increasing difficulty level to do so. It would seem, at this stage, that although running a full node is considered very important and desirable (probably vital) to protect the code and validate the transactions, those who run a full node (currently 123GB of data last I checked) 24/7 are not compensated (at all) for the costs they are incurring to do so. To that end, it seems reasonable to me that a small payment should be introduced and paid to full node operators for providing this service, which could only be viewed as beneficial in the protection of the entire network. A small payment would also incentivise others to run full nodes and so further strengthen the system. I guess the issue then is, if this were to happen, how would it be levied or paid and by whom? Your thoughts?

  4. Keeps coming back to this video. One of my absolute favourite. Your knowledge and inspiring way of sharing this is addictive! It sparks a wish to learn more. Thank you for doing that!

  5. What is the use of building your own node. I mean how is it profitable for me to know that the transaction occurred. Plz Reply

  6. Andreas, it's my understanding that Full nodes validate transactions and place them in blocks. But a full node must have hashpower behind it. "Full" non mining nodes can't validate transactions for the network and only receive and validate blocks that are already on chain. They have practically no effect on the network outside of your personal benefit. Can you explain if I have a misunderstanding?

  7. I'm running out of "Thumbs Ups" to give to this man.. YouTube is going to ban me if I keep thumbing up his speeches! But I just.. Can't.. Help it!

  8. This is pretty misleading though. Non-mining nodes do not "create" or add to the consensus. They just monitor the consensus that is being created by the miners to see if anything is different than expected.
    Bottom line is that non-mining nodes don't create consensus. They  just check to see what it is.

  9. One important thing for running a really active and useful btc node – public IP

    Otherwise you just have a copy of blockchain for yourself not for the whole btc network..

  10. Great explanation of the role of nodes at 6:30. "Miners get the transactions that nodes decided were valid and they give back blocks at the pleasure of the nodes that will decide if they are worthy of being propagated because they are valid."

  11. I am new in this field of blockchain , and after learning alot about mining and nodes I just have one question. WHAT IS THE INCENTIVE FOR A NODE just like there is an incentive for miner of there isnt any benifit for NODE what keeps it operating

  12. greate question but far greater answer. such a good teacher andreas. you make every other teacher look crappy.

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