Blockchain data management startup SendBlocks announced the completion of a $8.20 million seed round of financing. Castle Island Ventures led this round, with other participating investors including Pitango, Illuminate Financial, Laser Digital (Nomura), and Starkware. SendBlocks provides a platform to help blockchain enterprises, ecosystems, protocols, and applications define and filter the required data. Existing clients such as Bancor and SphereX have achieved operational simplification and cost savings through its solution.