• Bitcoin
    • The First One
    • Proof of Work
    • Has a scripting language called Script
    • Lightning
  • Ethereum
    • Proof of Stake
    • EVM opcodes see my notes
    • zksync
    • Optimism
  • Monero
    • Privacy-preserving. High volume.
    • Had some traceability issues early on (paper)
      • i.e., you could defeat the privacy guarantees
  • Zcash
    • Privacy-preserving. Not as high volume.
    • ZKPs.
  • Polkadot
    • Focused on interoperability.
    • “Substrate” SDK
      • hook into the base chain for computational “security” against 51% attacks.
    • Kusama
  • Polygon
  • Solana
  • Celestia
    • Some sort of interesting data availability primitives?