Blockchain technology and crypto mining exchange traded funds lead ETFs in Wednesday's trading session. The ETFs that provide investors exposure to organizations involved in developing, mining, and utilizing bitcoin (BTC-USD) have gained ground on the day.Below is the daily price action of three blockchain, digital transformation, and crypto mining ETFs:VanEck Vectors Digital Transformation ETF (DAPP): +6.14%.Transformational Data Sharing Amplify ETF (BLOK): +4.26%.Bitwise Crypto Industry Innovators ETF (BITQ): +7.55%.Although these three ETFs are having a strong performance today, they have not fared well of late as they closely correlate with bitcoin which has sold off recently. Since bitcoins peak back on April 14th, DAPP, BLOK, and BITQ have performed as follows:DAPP: -32.91%.BLOK: -24.56%.BITQ: -6.64% (launched on 5/12/2021.)Bitcoin rallies today as it bounces off the near $32,000 level and has rallied to the topside +11.99% to $36,400. Bitcoin is holding above the $30,000 zone from a technical level and is looking to regain momentum to the topside. Below is a chart