Key Figures in Blockchain & Digital Currency History

Create a simple timeline with just the names and image of those people from this information: 1982 – David Chaum Proposed early cryptographic concepts for digital cash in his dissertation. 1991 – Stuart Haber & W. Scott Stornetta Developed the first cryptographically secured chain of blocks to prevent document tampering. 1992 – Dave Bayer Improved blockchain efficiency by integrating Merkle trees, allowing multiple document certificates per block. 1998 – Nick Szabo Conceptualized "bit gold," an early idea for decentralized digital currency. 2002 – Adam Back Created Hashcash, a proof-of-work system to prevent spam, later influencing Bitcoin's mining process.