Digital Registry Services A blockchain based, globally standardised registry service for unlisted securities and investments PrimaryLedger is an online global business providing a full spectrum of Digital Registry Services and exchange capabilities. PrimaryLedger leverages the Ethereum blockchain to create Digital Financial Instruments which will allow the creation and store of immutable record verifying ownership titles of financial securities such as equities, units, investments and debt instruments issued by companies and managed funds and trusts - both listed and unlisted.