Coinbase now supports sending and receiving Open USD, or OUSD, across Base, Ethereum, Solana and Tempo in supported regions. The stablecoin launched on September 30, 2026, and Coinbase enabled transfers the following day. Coinbase is also one of OUSD's five founding partners, alongside Mastercard, Shopify, Stripe and Visa, with each holding equal equity in the project. OUSD follows the Open Standard consortium model, which distributes ownership and economics among its backers rather than relying on a single issuer. Kraken and Uniswap also offer access to the token. The consortium says its founding partners have committed more than $1 billion in liquidity, including more than $400 million initially supplied on Tempo, Stripe's new Layer 1 network. Businesses can mint and redeem OUSD at a 1:1 ratio with the dollar without fees or volume limits, while reserves are held at BlackRock, Lead Bank and BNY. Monthly attestations provide periodic third-party checks of the reserve assets. OUSD is positioned as an alternative to Tether's USDT and Circle's USDC, with the consortium targeting more than 200 partner companies and future use in cross-border payments and institutional trading. The next key indicators are actual trading volume, further exchange and wallet support, user reception to reserve attestations and Tempo's growth.