Exonum is a permissioned (clearnet) Blockchain framework written in Rust. MetroToken (MTK), previously Cryptopaw, is a experiential permissioned blockchain and cryptocurrency based on that framework, and written in the same language. MetroToken's hypothetical goal - since I don't have the desire to create an full on ICO - is not limited to mass transit limit since Metro is short Metropolitan. The reason token, specifically, and not coin, is explained a little farther down.
I choose MetroToken because it reminds me of New York City's MetroCard. I wanted to be broad about it's purpose because I didn't know what it's purpose will be but still limited in it's scope, since it's not designed to be like Bitcoin. It's meant to be private. Although I have tried to derive from Bitcoin, Litecoin and CryptoNote just to create my own private coin to play with before discovering Exonum.
MetroToken is still a work in progress. Most of the code is complete. The rest will come from experiments based on a list proposals - mostly to myself, but being an open project, suggestions are welcome.
The luxury of private or permissioned blockchains is how easy it is to experiment without the massive overhead of a public blockchain or the mining incentive that's required. Exoum mines on-the-fly using a similar ASIC-proof algorithm as CryptoNote.
And, in all honesty, if I were to create a serious my own cryptocurrency, it would be private, though technically permissioned. This is why it's specifically called a "Token" and not a "Coin," as Wikipedia explains:
The key point of difference between a token and a coin is that a coin is issued by a governmental local or national authority and is freely exchangeable for goods or other coins, whereas a token has a much more limited use and is often (but not always) issued by a private company, group, association or individual.
I have no need to create my own because I already got what I need with Monero. And while I could have easily called it "Tom's Token," that feels too personal for me, even though there is nothing wrong with doing - e.g. the TOML format. However, this isn't to say there is still a demand for new ones. There is. Especially as the good and bad altcoins get weeded out. This is why I push for more CryptoNote-based currencies.
This project is licensed under the BSD 3-clause license. Most cryptocurrencies fall under the MIT. MIT and BSD are very similar; however, I choose BSD 3-clause specifically for the 3rd clause.
- Neither the name of the nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
This is due to the nature of the currency, and other projects under the FENTREX umbrella, although some TPaw projects have migrated to it too. It's a respectful trade off in exchange for how permissive the license actually is.