To measure the success of NFT influencer marketing, focus on metrics such as reach, engagement, conversions, and return on investment (ROI). Track the increase in followers, likes, comments, and shares generated by the influencers. Monitor click-through rates, website traffic, and sales attributed to their promotions. It's also crucial to establish unique campaign-specific goals and use tracking links or promo codes to attribute conversions accurately.
source: https://www.inoru.com/nft-influencer-marketing-services