ABC of Mining - Proof-Of-Work | Blockchain Central

The video explains the proof of work (PoW) consensus mechanism used in Bitcoin and other blockchains. It highlights the differences between permissioned and unpermissioned blockchains, detailing how PoW ensures data integrity in a decentralized network. The video describes the components of a block, the hashing process, and the computational effort required for mining. It concludes with a discussion on the energy-intensive nature of PoW and the exploration of alternative mechanisms.

How does the difficulty of finding a hash in Bitcoin change with the number of leading zeros required?

Discuss the energy requirements of the proof of work mechanism.

What happens to the transaction history once a block is added to the blockchain?