Most people judge an NFT marketplace by what they can see. The interface. The NFT cards. The buying experience. But I've been looking at another side of @VelixoMarket. The infrastructure behind the information. On Fogo, Velixo uses a dedicated indexer that monitors blockchain activity and turns onchain transactions into structured marketplace data. That distinction matters. A blockchain records what happened. An indexer makes that history easier to search, organize, and understand. Velixo's data layer supports collection statistics, listings, NFT metadata, offers, and transaction activity. The project also provides public GET API endpoints that developers can use without an API key, subject to rate limits. And there's another important separation. The API can construct unsigned transactions, but the user's wallet signs them locally. The private key doesn't need to leave the browser. To me, this is an underrated part of building a useful NFT ecosystem. The marketplace serves collectors through its interface. The data infrastructure can also become useful for dashboards, analytics, and applications built around NFT activity. Of course, the quality of that infrastructure depends on accuracy, uptime, and continued maintenance. But I like seeing the technical foundation explained rather than treating everything behind the interface as magic. $VLX