This news covers several important updates related to cryptocurrency and blockchain. It includes multiple U.S. institutions submitting Ethereum spot ETF applications, VanEck submitting a Solana ETF application, CEX returning a large amount of Bitcoin, Grayscale and Bitstamp updates on ETH and Mt.Gox compensation, EOS network launching a staking rewards program, technical developments from ZKM and Golem Network, funding movements of Auros Ventures and DigitalX, and a significant financing round for AI company Hebbia.

1. Six Ethereum spot ETF applicants in the United States have submitted revised S-1 filings;
2. VanEck's Solana ETF 19b-4 form has been submitted to the SEC;
3. CEX returned over 200 million US dollars worth of Bitcoin to the German government, possibly due to failure to sell within the target price range;
4. Grayscale: ETHE will distribute 10% of its ETH holdings to the Ethereum Mini Trust, with July 18 set as the record date;
5. Bitstamp: will expedite the distribution of Mt. Gox reimbursements;
6. Bitbank analyst: expects minimal market impact from Mt. Gox reimbursements, as the impact has been overly digested;
7. EOS network introduces a 250 million EOS staking reward program;
8. ZKM plans to launch the Bitcoin L2 solution GOAT Network in Q3;
9. Golem Network team responds to ETH sale: part of the previously announced staking test plan;
10. Auros Ventures plans to invest over 50 million US dollars in early-stage digital asset companies in the next two years;
11. DigitalX to list its Bitcoin ETF on the Australian Securities Exchange;
12. AI company Hebbia completes a 130 million US dollar financing round, led by a16z.

Summary of the Latest Developments in Cryptocurrency and Blockchain Sector