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• Blockchain : A blockchain is an immutable digital ledger that records every single transaction ever made.
  • blockchain transactions are irreversible in that, once they are recorded, the data in any given block cannot be altered retroactively without altering all subsequent blocks.
  • Layer 1 and layer 2: Refer to two distinct methods of designing blockchains. While some blockchains can operate independently, others are built on top of existing blockchains to add functionality. See Link

• Currencies:
  • Bitcoin : was designed as a digital alternative to traditional currencies, aiming to provide a decentralized method of transferring value. Bitcoin transactions are verified by a network of nodes through cryptography and recorded on a public ledger called a blockchain.
  • Ethereum : While it is a cryptocurrency, is designed to be a platform that allows peer-to-peer contracts and applications to be built and run without any control, permission, or interference from third parties.

• Institutions (banks) do Asset Management. Also invest on your behalf with their strategies

• Exchanges
  • Binance (asia, like many of them)
  • Coinbase
  • …