I suspect every non-techie person reading this will want to know the answer to this question. We hear about blockchains and DLT (distributed ledger technology) all the time. Putting aside the techies who actually code and deploy blockchains, the rest of us (who are curious enough) will have gained only an abstract understanding of blocks, chains, hashing, keys; without ever seeing those in action.

Wouldn't it be great to actually see how a blockchain works?

Well, I think I’ve found one of the best visual explanations of how a blockchain works: I'd highly recommend Anders Brownworth’s video demonstrations at https://anders.com/blockchain.

After watching these demonstrations, you’ll know (and will have actually seen):

  • what a hash and nonce is
  • what blocks are, and how they link-up to form a chain
  • how distributed ledgers work, and how they ‘resist’ tampering
  • how transactions are verified
  • how public / private keys are used in a blockchain

A personal thanks to Anders Brownworth - the creator of the videos - for allowing me to tell you about his fantastic video demonstrations.