AirSwap ($AST) is launching an interface for so-called over-the-counter (OTC) block trading to attract institutional investors to its decentralized exchange (DEX) for Ethereum tokens ($ETH). While to date AirSwap users have been signaling their intent to buy or sell a certain amount of tokens at a certain price on a take-it-or-leave-it basis, the new front end includes a chat feature so traders can negotiate the terms privately. Large, sophisticated investors often prefer trading this way rather than broadcasting a large order that could move the market. The new interface also includes an identity verification system, with the ID checks performed externally by Wyre, a regulated money services business (MSB). This helps institutional players such as broker-dealers to comply with regulations that require them to know who they are trading with.