What problem does this service solve?

Primecoin uses prime number generation to improve Bitcoin's PoW protocol.

Sphere's goal is to create a digital currency with a fair distribution model.

TrumpCoin wants to organize Trump supporters and enable them to contribute to his political goals through a digital currency.

Token Stats

Company Description

Primecoin is a cryptocurrency based on finding prime numbers. Identifying prime numbers plays a central role in cryptography. Primecoin's unique Proof-of-Work (PoW) consensus mechanism is able to increase transaction speeds and improve energy efficiency.
The network searches for special prime number chains known as Cunningham chains and bi-twin chains, which are of interest in mathematical research.

Sphere is a smart contract platform and peer-to-peer payment network. The network has a hybrid PoW and PoS consensus mechanism and is powered by the native SPHR token, which can be swapped for an ERC20 token over the Ubiq smart contract platform.

TrumpCoin is a cryptocurrency that was created to support Donald Trump. Their marketing materials do not provide specific details about what they hope to achieve, or why they need a blockchain-based digital currency. TrumpCoin has a hybrid Proof-of-Work (PoW) and Proof-of-Stake (PoS) consensus mechanism.

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Primecoin vs Sphere vs TrumpCoin

Primecoin

Sphere

TrumpCoin