Block's net revenue in the second quarter was $6.16 billion, while analysts expected $6.31 billion; adjusted EBITDA in the second quarter was $759 million, while analysts expected $685.7 million; Bitcoin revenue in the second quarter was $2.61 billion, while analysts expected $2.73 billion; adjusted EBITDA for the third quarter is expected to be $695 million, while analysts expected $669.5 million; full-year adjusted EBITDA is expected to be $2.9 billion, compared with the previous estimate of $2.76 billion and analysts expected $2.8 billion.