> The technology for preventing double-spending is incredibly inefficient and slow. Transaction costs are high. Right now, a Bitcoin
This is true of bitcoin. There are better cryptocurrencies which have already solved these problems completely. Have a taste on https://nanospeed.live/ to do a fee-less live transaction in milliseconds.
That's much too sweeping a statement. The Nano currency is a pure currency. IOTA on the other hand wants to sell itself as a data exchange layer for IoT. With emphasis on "wants" ...
I would compare Nano more to what the early Bitcoin wanted to be: "A Peer-to-Peer Electronic Cash System"
And yes, as such Nano is one of the most promising projects in the world of cryptocurrencies.
Nano consensus mechanism is called Open Representative Voting (ORV). It has similar sides to proof-of-stake, but differs in important places. e.g. it is less a "stake" than a voting weight that the users themselves distribute to nodes of their choice (or their own). ORV's self-description at:
"Bitcoin (and all other cryptocoins) are just not usable for mass transactions. Buying anything with bitcoin takes over 10 minutes"
Anybody here know the currency Nano? The ORV (Open Representative Voting) consensus mechanism makes it possible to find decentralized consensus in ms without the power-intensive PoW.
For a first impression, you can perform a real on-chain transaction here: https://nanospeed.live/
I would like to bring Open Representative Voting (ORV) into the game. On ORV, every account can freely choose a Representative at any time to vote on their behalf, even when the delegating account itself is offline. These Representative accounts are configured on nodes that remain online and vote on the validity of transactions they see on the network. Their voting weight is the sum of balances for accounts delegating to them, and if they have enough voting weight they become a Principal Representative. The votes these Principal Representatives send out will subsequently be rebroadcasted by other nodes.
Open in this context means, that every account can be chosen as a representative by every account.