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Browsing Concept: HashCash

HashCash is an early Proof of Work (PoW) system developed by Adam Back. Its initial purpose was to fight email spam, but HashCash ended up becoming a central component of the Bitcoin consensus mechanism.

Browsing 2 results under HashCash
Who is Adam Back?
In today's Who's Who section of Crypto.BI, we introduce Adam Back, a cryptographer from Great Britain who created HashCash, one of the most fundamental pieces of the Bitcoin softw...
What is the difference between digital money and cryptocurrencies?
Cryptocurrencies are a form of digital money, but what we normally understand as digital money is represented in fiat currency. For instance, prepaid cards, virtual credit cards a...