I've found this a really clear and helpful explanation of blockchain concepts in the past: http://www.michaelnielsen.org/ddi/how-the-bitcoin-protocol-actually-w

I've found this a really clear and helpful explanation of blockchain concepts in the past: http://www.michaelnielsen.org/ddi/how-the-bitcoin-protocol-actually-works/ http://www.michaelnielsen.org/ddi/how-the-bitcoin-protocol-a...