My history sheet has been open for the last 30 years, but there have been no complaints against me in the past 20 years. Can I still apply for a passport? I previously applied, but my police verification was unsuccessful due to the open history sheet.

Yes, you can still apply for a passport. While a past history sheet can be a hurdle, the absence of complaints for the past 20 years is a positive factor. You should provide all relevant information and supporting documents, including police verification clearance, when applying. The Passport Authority will consider your case based on the merits and relevant guidelines.