Idena is a novel way to formalise people on the blockchain without personally identifiable information. Idena proves the humanness and uniqueness of its participants by running an AI-resistant test at the same time for everyone around the globe.



Primecoin is described as 'Innovative cryptocurrency, a form of digital currency secured by cryptography and issued through a decentralized mining market. Derived from Satoshi Nakamoto’s Bitcoin, Primecoin introduces an unique form of proof-of-work based on prime numbers' and is a cryptocurrency coin in the bitcoin & cryptocurrency category. There are more than 50 alternatives to Primecoin, not only websites but also apps for a variety of platforms, including Linux, Mac, Windows and Android apps. The best Primecoin alternative is Bitcoin, which is both free and Open Source. Other great sites and apps similar to Primecoin are Monero, Ethereum, Litecoin and DASH.
Idena is a novel way to formalise people on the blockchain without personally identifiable information. Idena proves the humanness and uniqueness of its participants by running an AI-resistant test at the same time for everyone around the globe.



NEM's blockchain platform was designed and coded from the ground up for scale and speed. NEM's permissioned private blockchain delivers industry-leading transaction rates for internal ledgers.
Bitcoin Unlimited is a fork of the Bitcoin Core client, giving the miners and users the opportunity to determine the block size limit themselves.
ZCore was born out of a desire to create a cryptocurrency that is truly accessible to everyone and revolutionize the cryptocurrency market. We believe that a truly useful currency is one that is easily used by anyone.



Novacoin is the coin of the feature. It's unique way of utilizing both Proof-of-Work and Proof-of-Stake for block generation with separated target limits make it stand out.
Nxt is a fast and energy-efficient cryptocurrency based on the Proof-of-Stake concept, suitable for online payments and decentralized assets. Nextcoin and Nxtcoin are features of Nxt.

Gridcoin is a cryptocurrency which rewards volunteer distributed computation performed on the BOINC platform on top of Proof of Stake.
A network of communities based on trusted human certifications. Server(s) are allowing to manage crypto-currencies through an Universal Basic Income system on peer-to-peer network.




Lisk is a cryptocurrency that offers a next generation platform that allows for the development and distribution of JavaScript based blockchain applications.
Created in June 2013, it was the first coin that provided built-in support for the I2P darknet that makes it impossible to determine the IP address of the user. Anoncoin also has built in support of Tor, which can help conceal your location and keep your internet traffic private.
Decred is an open and progressive cryptocurrency with a system of community-based governance integrated into its blockchain.
Feathercoin is an Internet currency not controlled by any central bank or institution

