Key facts card: Adam Back
Hashcash was originally designed to combat spam and denial-of-service attacks: the sender first has to solve a hash puzzle.
Products such as cloud mining that promise fixed returns warrant special caution; many are actually scams.
The mining mechanism of $BTC draws on Adam Back’s Hashcash concept.
Hashcash was originally designed to combat spam and denial-of-service attacks: the sender first has to solve a hash puzzle.
Products such as cloud mining that promise fixed returns warrant special caution; many are actually scams.
The mining mechanism of $BTC draws on Adam Back’s Hashcash concept.