Analysis: total NFT sales reached $2B in Q1 2021, with a seven-day peak of $176M on May 9, but have fallen in recent weeks, with sales of $8.7M on June 15 (Ryan Browne/CNBC)

Ryan Browne / CNBC:
Analysis: total NFT sales reached $2B in Q1 2021, with a seven-day peak of $176M on May 9, but have fallen in recent weeks, with sales of $8.7M on June 15  —  – Sales of digital collectibles known as non-fungible tokens have fallen dramatically in recent weeks.