tZero (t0) is a blockchain-based platform for trading digital assets, such as security tokens. It is a subsidiary of Overstock.com, an American internet retailer.tZero aims to provide a secure, transparent and efficient platform for trading digital assets, by using blockchain technology and smart contracts. The platform uses a private blockchain, which is built on the Ethereum network, to record and verify transactions.tZero's security token platform allows issuers to create digital representations of traditional securities, such as stocks and bonds, and trade them on the platform. These security tokens are compliant with SEC regulations, which helps to ensure that they are safe and secure for investors.One of the key features of tZero's platform is its ability to handle pre- and post-trade processes, including compliance, settlement, and custody. This makes it a one-stop-shop for investors looking to trade security tokens.In summary, tZero is a blockchain-based platform for trading digital assets, specifically security tokens, it aims to provide a secure, transparent and efficient platform for trading digital assets by using blockchain technology and smart contracts. its platform is built on Ethereum network, it has the ability to handle pre- and post-trade processes, including compliance, settlement, and custody which makes it a one-stop-shop for investors looking to trade security tokens.