As one of the most secure blockchain networks, Bitcoin’s block space is highly valued by its users. Because of its security, Bitcoin has inadvertently fallen into a role as a data repository for businesses attempting to leverage its OP_RETURN script.
One such business is VeriBlock, a recently launched network leveraging OP_RETURN and Bitcoin’s blockchain to secure alternative blockchain networks, inheriting Bitcoin’s security in the process.
VeriBlock’s usage of OP_RETURN has faced some criticism in the past, with some airing concerns that VeriBlock is essentially spamming transactions into the Bitcoin network.
VeriBlock started testing its Proof-of-Proof mining on the Bitcoin mainnet in September 2018.