Reflect the core business: The domain name should clearly reflect the primary focus of your business, i.e., blockchain technology for supply chain finance. This makes it easier for potential clients to understand what your company does at first glance.

Unique branding: Choose a unique and memorable name that sets you apart from competitors. Consider using keywords related to your services, but avoid being too generic or similar to other existing domains.

Keep it short and simple: A shorter domain name is generally easier to remember and less prone to typos. Aim for something between - characters if possible.

Include relevant keywords: Incorporating keywords like "blockchain," "finance," "IoT," or "algorithm" can help improve search engine visibility and make your website more discoverable.

Use a .com extension: While there are many top-level domains (TLDs) available today, .com remains the most widely recognized and trusted. If the .com version of your desired name isn't available, consider alternatives like .net, .io, or even new TLDs like .tech or .app.

Here's a hypothetical example for your company's domain name based on these guidelines: "BlockchainFinanceTech.com". Of course, this is just an example, and you should choose a name that best represents your brand and offerings.

For the specific areas you mentioned:

* Power IoT: You may want to consider incorporating "power" or "IoT" into your domain name to emphasize this aspect of your business.

* Recommendation algorithms: Including words such as "recommendation," "personalization," or "AI" might be beneficial if this is a key part of your offering.

* Mobile app development: Terms like "mobile," "app," or "development" can help convey your expertise in this area.