The Tezos blockchain was created by husband and wife Arthur and Kathleen Breitman in 2014 through the Dynamic Ledger Solutions, a startup they founded to develop Tezos.
The Tezos team held an initial coin offering (ICO) in July 2017, raising the equivalent of $232 million (66,000 BTC and 361,000 ETH), the largest ever ICO at the time. Following the ICO, the Tezos Foundation, based out of Switzerland, was created to launch the protocol.
The foundation also committed to purchasing Dynamic Ledger Solutions, including all intellectual property rights to the Tezos blockchain, per the ICO agreement.