U-coin is an invoice and trade financing platform based on the Ethereum blockchain. U Coin uses XBRL, smart contracts and stable fixed tokens to create a unique global trading environment for investors and sellers to trade invoices from all over the world.

U-coin is a kind of virtual currency consumed in Sina, which is stored in your U-coin account. You can query your U-coin account after logging in with Sina. It can be obtained through fixed telephone, PHS, mobile phone, broadband, bank card and offline card purchase. U coins can be easily consumed online, with various recharge methods and convenient consumption, and Sina has adopted more flexible ways to promote netizens to use Sina's services more.