# Altcoin Roundup: 3 Proof-of-work protocols focused on building Web 3.0
“# Altcoin Roundup: 3 Proof-of-work protocols focused on building Web 3.0 ” The proof-of-work (PoW) consensus model is the mechanism that kicked off the revolution that launched Bitcoin (BTC) in 2009 and it was the model of choice behind many of the popular projects in the early fledgling years of the crypto ecosystem. As time…