Zarb is a Proof-of-Stake blockchain which is not holding any ICOs and has no pre-minted tokens (unlike most of PoS blockchain). The participants of the blockchain collect rewards based on their availability and honesty.
Zarb is designed from the ground up to be a “pure” blockchain protocol. Zarb has a fixed supply of token generated at genesis which are distributed over time as block rewards to well behaving validators who support the network by providing storage and processing power. Zarb is secured through a novel Proof of Stake consensus mechanism whereby stake is locked on the network to prevent any malicious or “Byzantine” behaviors that could potentially disrupt network operations.
Zarb started with 4 bootstrap validators without any stake and now anyone can join the network by staking some tokens. The stake will be bonded and can't be touched.
A set of 21 Validators, secure the network and validate blocks. However unlike Delegated Proof-Of-Stake (dPoS) blockchain, this set is not fix. Indeed Zarb solves validators scalability problem with a clever and secure mechanism. Validator set in Zarb is dynamic and flexible instead of fix and governed set of validators.
https://zarb.network
https://github.com/zarbchain/