The New York Stock Exchange (NYSE) has launched a Bitcoin Index (NYXBT), an important endorsement for Bitcoin’s lurch towards the mainstream.

“Bitcoin values are quickly becoming a data point that our customers want to follow,” said NYSE Group President Thomas Farley, “we are pleased to bring transparency to this market.”

The index will show the price of one bitcoin in dollars, based upon the actual market transactions taking places in exchanges that have been evaluated and meet the NYSE’s quality standards, which at the moment is just one, Coinbase Exchange, which the NYSE has made a minority investment in.

The NYSE is expecting to add more indices to its Bitcoin suite over time as they evaluate more exchanges for transparency, liquidity, and governance.