Blockchain is a distributed ledger technology (DLT) that records transactions in a chain of chronologically linked, cryptographically secured data blocks across a decentralised network of computers — making the recorded data immutable, transparent, and resistant to tampering or alteration without consensus of the network participants. Originally developed as the underlying architecture for Bitcoin in 2008, blockchain technology has evolved far beyond cryptocurrency to encompass applications in supply chain management, trade finance, cross-border payments, securities settlement, digital identity verification, smart contracts, and tokenisation of real-world assets. In India, SEBI and RBI are actively exploring blockchain applications in securities settlement and digital currency (the digital rupee — e-RUPI/CBDC). For investors on Ventura Securities tracking the technology sector, financial infrastructure investments, and digital asset themes, blockchain represents both a disruptive infrastructure technology and a growing investment theme across Indian and global equity markets.