blockchain

Concept

• Blockchain vs cryptocurrency?
  • Blockchain is the technology that enabled cryptocurrency.
• Blockchain vs db?
  • Limited support to
    • High transaction volume. 30 transactions per second for Ethereum, while Visa supports up to 25k.
    • Search and indexing
  • No support to
    • Data deletion/updating
  • Distributed essence
• Hash Function
  • Fast
  • Deterministic
  • Non-reversible
  • Avalanche effect
  • Low collision

Implementations

• Bitcoin - developed for financial transactions
• Ethereum - evolved to a “global distributed computer”
• Solana - “Ethereum killer”
• Permissioned blockchains
  • Hyperledger Fabric - IBM, The Linux Foundation
  • Corda R3 - Initial focus on business