Bitcoin: Proof of Work vs Alternatives (2008)
by Anonymous
Satoshi Nakamoto chose Proof of Work as Bitcoin's consensus mechanism, requiring computational energy to validate transactions. This made Bitcoin secure but energy-intensive, sparking ongoing debate about alternatives.
Proof of Work
2008
year
Computational puzzle — 51% attack requires majority of hash power
security model
Enormous — rivals small countries
energy use
Chosen for Bitcoin — proven secure for 15+ years
outcome
Proof of Stake
Theorized later
year
Validators stake coins as collateral
security model
Minimal
energy use
Adopted by Ethereum in 2022
outcome
Like this comparison? Make it your own.
Sign up to use as templateMore in History
Glass-Steagall: Separate or Combined Banking (1933)
Separate Commercial and Investment Banking vs Self-Regulation
Printing the Bible in Vernacular Languages (1520s)
Vernacular Translation vs Latin Only (Church Position)
United Nations Headquarters Location (1946)
New York City vs Philadelphia vs San Francisco
Columbus: West to Asia vs Known Routes (1492)
Sail West (Columbus's Plan) vs Portuguese Route Around Africa
Wright Amendment: Protect DFW or Free Southwest Airlines (1979-2014)
Restrict Love Field (Wright Amendment) vs Open Competition
US Constitution: Virginia Plan vs New Jersey Plan (1787)
Virginia Plan (Proportional) vs New Jersey Plan (Equal) vs Connecticut Compromise (Both)