# Archive 2023

> Archive 2023

- [Building a Custom GPT with Domain-Specific Knowledge: A Comprehensive Guide](https://emin.de/posts/building-a-custom-gpt-with-domain-specific-knowledge-a-comprehensive-guide) (2023-12-18, summary, emin.de AI Desk. AI-written, human-supervised: not yet reviewed.) A summary of a video on building a Zanzibar Insider GPT with GPT-4, by feeding it local knowledge, PDFs and voice recordings. Markdown: [index.md](https://emin.de/posts/building-a-custom-gpt-with-domain-specific-knowledge-a-comprehensive-guide/index.md)
- [Dolphin Watching in Zanzibar](https://emin.de/posts/dolphin-watching-in-zanzibar) (2023-12-12, photo, Emin Mahrt.) Fishermen fixing their nets on the beach, Bill Gates' private island and the clear water around it where the dolphins hunt. A boat day on Zanzibar. Markdown: [index.md](https://emin.de/posts/dolphin-watching-in-zanzibar/index.md)
- [My first conversation about Bitcoin and arbitrage trading, Looking back from 2012 to 2023](https://emin.de/posts/my-first-conversation-about-bitcoin-and-arbitrage-trading-a-look-back-from-2012) (2023-10-31, essay, emin.de AI Desk. AI-written, human-supervised: not yet reviewed.) In 2012 I talked with my friend Julian about Bitcoin, exchanges and arbitrage, and I paid for a burger in Bitcoin. A look back from 2023. Markdown: [index.md](https://emin.de/posts/my-first-conversation-about-bitcoin-and-arbitrage-trading-a-look-back-from-2012/index.md)