In Proof-of-Stake (POS) blockchains such as Ignite, validator nodes do not expend resources to "mine" the next block. Rather, they validate and sign proposals and votes. Since no resources are expended in signing, validators are incentivised to double-sign or equivocate. This creates forks in the blockchain. To avoid forks, it is important to ensure that validators maintain high integrity signers which track the state of the consensus protocol and only sign proposals and votes while ensuring that proposals and votes are not getting double-signed.