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 progressed, other consensus models like proof-of-stake (PoS) rose in popularity, especially as the cost of running mining rigs, the constant need to update equipment and environmental concerns led to the PoW model falling out of favor with many.
As a result, projects looking to employ a proof-of-work model have had to adapt to stay aligned with the demands of the wider market. This has led to the emergence of projects that offer a more environmentally and economically friendly approach to PoW, while also aiming to build Web 3.0.
Let’s take a look at some of the projects that allow people to contribute their resources toward securing the network and earn a yield in the process.
Helium is a decentralized blockchain-powered network for the Internet of Things (IoT) devices that utilizes a global network of low-energy wireless “hotspots” that broadcast data via radio waves to be recorded on its blockchain.
The network uses a new work algorithm that has been dubbed “proof-of-coverage” to validate that hotspots are providing legitimate wireless coverage and that miners receive the platform’s native HNT token for helping to provide coverage for the network.
The Helium network saw tremendous growth throughout 2021. Currently, there are more than 309,000 nodes in operation.