Blockchain data analytics startup Allium has successfully closed a $40 million Series B funding round, spearheaded by Amplify Partners. The New York-based firm, known for its expertise in cleaning and integrating complex on-chain data, also attracted investments from Kleiner Perkins and Theory Ventures. Allium's services cater to high-profile institutional clients such as Visa, the Federal Reserve, Coinbase, and a16z Crypto, highlighting its significant role in the blockchain analytics sector.