# Capital Time Machine

> Public historical funding and IPO research, original-source references, and hypothetical calculators. No live market quotes. Maintained by CapitalTimeMachine.

## Research
- [Company catalog](https://capitaltimemachine.com/data/catalog.json): IDs, canonical citation URLs and JSON/CSV/Markdown links for every public company profile.
- [Data guide](https://capitaltimemachine.com/data): Schema explanation, coverage, reuse and citations.
- [AI connection guide](https://capitaltimemachine.com/ai): Public read-only MCP endpoint at https://capitaltimemachine.com/mcp. Tools: search, fetch, calculate. Streamable HTTP POST, no authentication.
- [Methodology](https://capitaltimemachine.com/methodology): Share conversions, valuation comparisons, precision and limitations.
- [Updates and corrections](https://capitaltimemachine.com/research-updates): Dated changes and correction contact.

## Selected company records
- [OpenAI](https://capitaltimemachine.com/data/companies/openai.md)
- [Anthropic](https://capitaltimemachine.com/data/companies/anthropic.md)
- [NVIDIA](https://capitaltimemachine.com/data/companies/nvidia.md)
- [Tesla](https://capitaltimemachine.com/data/companies/tesla.md)
- [Airbnb](https://capitaltimemachine.com/data/companies/airbnb.md)

## Interpretation
Company valuations are not per-share prices or shareholder returns. Financial observations retain their original date roles, precision, sources and security basis. User-entered prices are unverified assumptions. IPO offering-price illustrations do not establish investment access or realizable proceeds. Curated success stories are not representative of private-market returns. Original source terms remain applicable. Missing information is not estimated. Account records and owner analytics are not available through the public tools.