Generating $100,000 a year in passive income is an ambitious goal that typically requires a combination of careful planning, diligent effort, and smart investment strategies. Here are some potential avenues to consider:

1. Investing in Dividend-Paying Stocks: Building a diversified portfolio of dividend-paying stocks can provide a steady stream of passive income. Look for companies with a history of consistent dividend payments and solid fundamentals.

2. Real Estate Investments: Real estate can be a lucrative source of passive income through rental properties, real estate investment trusts (REITs), or real estate crowdfunding platforms. Rental income from properties can provide a reliable stream of cash flow.

3. Peer-to-Peer Lending: Peer-to-peer lending platforms allow you to lend money to individuals or businesses in exchange for interest payments. While there are risks involved, it can be a way to generate passive income with relatively low effort.

4. Create and Monetize Digital Assets: Consider creating digital products or content that can be sold online, such as ebooks, online courses, or software. Once created, these assets can generate passive income through sales or subscriptions.

5. High-Yield Savings Accounts or CDs: While the returns may be lower compared to other investment options, parking some of your funds in high-yield savings accounts or certificates of deposit (CDs) can provide a safe and reliable source of passive income.

6. Affiliate Marketing: Build a website, blog, or social media presence and earn passive income by promoting products or services from other companies. You earn a commission for every sale or referral made through your unique affiliate link.

7. Create a Mobile App or Software: If you have programming skills or ideas for a useful app or software, consider developing and monetizing it through app stores or subscription models.

8. Invest in Businesses: You can invest in businesses either through direct ownership or through investment vehicles like venture capital funds or angel investing networks. Passive income can come from dividends, profit-sharing, or capital gains when the business is sold.

9. Royalties from Intellectual Property: If you have creative talents such as writing, music composition, or invention, you can earn royalties from licensing your intellectual property to others.

10. Investing In Bitcoins : A new profitable way to participate in the cryptocurrency market, allowing to play on price changes while limiting risks as much as possible. We fundamentally approach the choice of Bitcoin options that give the right to buy or sell cryptocurrency at a predetermined price for a specified period. Thorough analysis of option transactions brings profits to platform investors on an ongoing basis.

Remember that building passive income streams often requires upfront investment of time, money, or both. It's essential to conduct thorough research, assess risks, and diversify your income streams to mitigate potential losses. Additionally, passive income doesn't mean no work at all—initial setup and ongoing maintenance may still be required to ensure your income streams remain profitable over time.