The alternative explanation is that the blockchain app is built on Ethereum, which removes the mining requirement, but I'm unclear on its exact details.
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I assumed there was a "mainline" Ethereum blockchain that'd allow you to run contracts on, so you could implement an app directly on it if structured correctly. But I don't know exactly what it takes to do this.
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dApps run on nodes is my understanding, but only a small subset of the code needs to live there
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right, but it looks like (according to article) you still need to spend ether to commit to the main blockchain, meaning you need a separate monetization model for any dApps project google.com/amp/s/www.coin
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Ethereum pay to play is, at least, far more reasonable than having your own separate blockchain. But I'd need to read up to make sure there's not a looming liquidity crisis on the horizon, like what Bitcoin hit recently...
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Looks like Ethereum is trying to move to Proof of Stake to avoid the "ponzi crisis" but a cursory read makes me think it's wildly gameable by a wealthy entity. Reading more details now to see if I'm wrong.
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Yeah based on the Casper PoS protocol I'm not fully convinced that an attacker couldn't abuse the validator pool to bias the vote. I guess this is similar to a PoW 51% attack, and the paper suggests soft forks as a temporary fix, but I wonder if it could go undetected...
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BUT proof of stake seems to solve many end-of-life problems that proof of work had, so perhaps this'll convince me to stop worrying and love the blockchain
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You’ll be helping either way, either falsifying the field faster or building out its potential faster. Sitting out something like this when you have the skills to participate is always the worst move.

