U.S. cryptocurrency exchange Coinbase is pushing back against rumors it may soon add Ripple's XRP token to its existing trading pairs.

The speculation originated after it was revealed that Coinbase chief operating officer and president Asiff Hirji would appear alongside Ripple chief executive Brad Garlinghouse on a special episode of CNBC's "Fast Money" program on March 6. And despite any hard evidence of the presumed listing, the price of XRP rose to over $1 on Monday on the news.

Following hours of radio silence on the issue, Coinbase took to Twitter to quell the rumors, stating that a January statement about listing new cryptocurrencies – which details how a "committee of internal experts" ultimately makes those decisions – hadn't changed.

As for the planned CNBC segment, it's not entirely clear at this time whether Garlinghouse and Hirji will speak on a panel together or appear separately.

Host Melissa Lee tweeted a screenshot of a promo for the crypto-themed segment earlier today, which also lists Passport Capital founder John Burbank and Social Capital founder and CEO Chamath Palihapitiya.

A spokesperson for Ripple declined to comment on the rumors when reached.

Disclosure: CoinDesk is a subsidiary of Digital Currency Group, which has an ownership stake in Ripple and Coinbase.

XRP tokens image via Shutterstock