In order for a transaction to take place, there must be a recorded pool of value for the payor to draw from, and a recorded pool of value for the payee to add to. The Ledger Layer is where accounts are used to track value, and where value is debited or credited during a transaction. These can range from traditional bank and credit card accounts to the distributed ledgers of cryptocurrencies. Examples include:

• Bank Accounts
  • Demand deposit account (chequing or savings)
  • Credit card account
  • Loan account
  • Registered accounts
• Distributed Ledgers (Blockchain)
• Prepaid Cards