We need to produce JSON with fields: seo_title, summary, key_entities (companies, people, locations), expert_faq (question, answer), internal_link_anchor, primary_keyword, secondary_keywords, content_type.

Constraints: summary must be 180-250 words, split into 3-4 paragraphs each 45-65 words. Use bold formatting selective 3-5 bolded terms total.

We must not invent facts. Source: "For years, crypto firms have argued that blockchain technology could create markets for private companies long before they reach Wall Street. SpaceX provided the industry’s biggest test yet. The results were mixed."

We can elaborate based on that: talk about crypto firms' argument, SpaceX as test, mixed results. We can add context like SpaceX's private valuation, IPO speculation, crypto market attempts, but must not invent specifics not implied. We can infer that SpaceX is a private company, valuation high, crypto firms tried to tokenize shares, etc. But we must be careful: we cannot invent specific numbers or dates not in source. However we can say "SpaceX, a privately held aerospace company" is implied? The source mentions SpaceX provided the industry's biggest test yet. It implies SpaceX is a private company. We can say "SpaceX, a private aerospace firm". That's okay.

We must not invent stats like valuation numbers unless implied. Not in source. So avoid.

We need bold formatting: maybe bold SpaceX, blockchain, mixed results. That's three.

Now word count: 180-250 words. Let's aim ~210 words.

Paragraphs: 3 paragraphs each ~70 words? Actually each 45-65 words, total 135-195. Wait 3 paragraphs each 45-65 gives 135-195 total, which is less than 180-250. So we need 4 paragraphs each 45-65 gives 180-260 total. So better to do 4 paragraphs each ~50-55 words => total ~200-220.

Thus 4 paragraphs.

Let's craft:

Paragraph1: Introduce crypto firms' argument about blockchain enabling pre-IPO markets, mention SpaceX as biggest test. ~55 words.

Paragraph2: Explain what the test inv