Aside from many 'theoritical' reading suggested by others here, I found that this tutorial is incredibly helpful: https://medium.com/@lhartikk/a-blockchain-in-2

Aside from many 'theoritical' reading suggested by others here, I found that this tutorial is incredibly helpful: https://medium.com/@lhartikk/a-blockchain-in-200-lines-of-code-963cc1cc0e54 https://medium.com/@lhartikk/a-blockchain-in-200-lines-of-co... I myself have also made the PHP version of the code implemented there. You could see it here: https://github.com/azophy/naivechain-php https://github.com/azophy/naivechain-php Hope it helps