NUM token is the native protocol token of NUMbers Protocol.It is primarily a utility token designed to incentivize users to archive/verify content with good integrity. The vision of Numbers Protocol is to create an ecosystem where photos (encompassing both images and videos) matter by leveraging proofs, integrity records and data provenance to increase the credibility and legitimacy of registered photos in the network. NUM tokens, as the native tokens of Numbers Protocol, can be used to pay for services running in the decentralized photo network.