The easiest and fastest way to confirm your accreditation is to upload a letter signed by an accountant/lawyer/broker-dealer/investment advisor, template letter can be found here.
However, the following are alternative methods for individual investors, one of the following options required:
Option 1: Proof of Net Worth
Any document(s) showing your net worth exceeds $1M USD either individually or together with your spouse - must be dated within the past 90 days of the date of the request. Acceptable documents include:
Bank statements
Brokerage account statements
IRA account statements
Cryptocurrency account statements
Any other document showing marketable assets
Option 2: Proof of Annual Income
Any documents showing your personal annual income is above $200,000 USD (or $300,000 USD with your spouse) for the previous 2 tax years
Income tax returns
W2s
1099s
Option 3: Proof of FINRA License & Qualification
Any proof and/or documentation that you currently maintain one of the following FINRA licenses (see SEC rules here):
Series 7
Series 65
Series 82
