docs: add comprehensive disclaimer for data accuracy

DISCLAIMER.md

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+# Disclaimer
+
+**Last Updated: December 31, 2025**
+
+## IMPORTANT NOTICE
+
+Please read this disclaimer carefully before using any data, information, or resources provided by the Open Intelligence Index project.
+
+## Data Accuracy and Reliability
+
+### Crowd-Sourced Nature
+The Open Intelligence Index is a **crowd-sourced** database. All information contained within this repository is submitted by community volunteers and contributors from around the world. We do not employ a dedicated research team to verify, validate, or fact-check submissions.
+
+### No Warranty or Guarantee
+**THE DATA IN THIS INDEX IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED**, including but not limited to:
+
+- **Accuracy**: We make no guarantees about the correctness, completeness, or reliability of any information
+- **Timeliness**: Information may be outdated. Companies change status, locations, ownership, and business models frequently
+- **Verifiability**: Facts, figures, and descriptions have not been independently verified
+
+## Your Responsibilities
+
+### Verification Required
+**Users must independently verify all information** before relying on it for any purpose. This includes but is not limited to:
+
+- Business decisions and investments
+- Academic research or publications
+- Journalism and reporting
+- Partnership or employment considerations
+- Product or service evaluations
+
+### Recommended Verification Steps
+Before using any data from this index, you should:
+
+1. **Visit the official company website** to confirm current information
+2. **Check official company registries** (e.g., SEC filings, Companies House, etc.)
+3. **Review recent news and press releases** for up-to-date developments
+4. **Contact the company directly** for critical information
+5. **Cross-reference with multiple sources** to validate claims
+
+## Limitations of Liability
+
+### Not Responsible for Damages
+The Open Intelligence Index project, its maintainers, contributors, and affiliated parties:
+
+- **Are not liable** for any errors, omissions, or inaccuracies in the data
+- **Assume no responsibility** for any loss or damage resulting from the use of this information
+- **Provide no guarantees** regarding the continued existence, status, or legitimacy of any listed entity
+
+### Not Professional Advice
+Information in this index constitutes:
+
+- **NOT investment advice**
+- **NOT legal advice**
+- **NOT financial advice**
+- **NOT business recommendation**
+
+Consult appropriate professionals for decisions in these areas.
+
+## Data Source Attribution
+
+### Third-Party Information
+Much of the data in this index is aggregated from publicly available sources, including:
+
+- Company websites and marketing materials
+- Public databases and registries
+- News articles and press releases
+- Social media and professional networks
+- Other public sources (which may themselves contain inaccuracies)
+
+### User Contributions
+All submissions are made in good faith by contributors. Contributors may:
+
+- Have affiliations with listed companies (voluntary disclosure encouraged)
+- Make unintentional errors
+- Provide outdated information based on sources available at the time of submission
+
+## Non-Endorsement
+
+### No Affiliation or Endorsement
+Inclusion of any company, product, service, or entity in this index:
+
+- **Does NOT constitute an endorsement** by the project or its maintainers
+- **Does NOT imply verification** of legitimacy or quality
+- **Does NOT indicate any affiliation** relationship
+- **Should NOT be interpreted as a recommendation**
+
+## Dynamic Nature of Information
+
+### Subject to Change
+The AI industry moves rapidly. Companies may:
+
+- Pivot, merge, acquire, or shut down
+- Change business models or focus areas
+- Update branding, names, or structures
+- Cease operations or become inactive
+
+**We do not guarantee regular updates or real-time accuracy.**
+
+## Reporting Issues
+
+### Community-Driven Corrections
+We rely on the community to maintain data quality. If you find:
+
+- Inaccurate information
+- Outdated entries
+- Companies that no longer exist
+- Factual errors
+
+**Please report these issues** or submit a correction via pull request to help improve the index for everyone.
+
+## Usage Agreement
+
+By using the Open Intelligence Index, you acknowledge that you:
+
+1. **Understand** the crowd-sourced and unverified nature of the data
+2. **Agree** to independently verify all information before use
+3. **Accept** all responsibility for how you use this information
+4. **Release** the project, its maintainers, and contributors from any liability
+
+## Contact
+
+For questions about this disclaimer or to report data issues, please open an issue in the GitHub repository.
+
+---
+
+**REMEMBER: This is a community project, not an authoritative source. Always verify, always validate, always use multiple sources.**

README.md

@@ -47,6 +47,7 @@ open-intelligence-index/
 │       └── validate-schema.yml  # CI validation pipeline
 ├── schema.yaml               # Human-readable schema reference
 ├── CONTRIBUTING.md           # Contribution guidelines
+├── DISCLAIMER.md             # Data usage disclaimer
 ├── LICENSE                   # MIT License
 └── README.md                 # This file
 ```
@@ -159,12 +160,14 @@ Be respectful, constructive, and inclusive. We aim to maintain a welcoming commu
 
 ## Disclaimer
 
-**THE DATA IN THIS INDEX IS PROVIDED "AS IS" FOR INFORMATIONAL PURPOSES ONLY.**
+**IMPORTANT**: This is a crowd-sourced database. All data is provided "AS IS" without warranty of any kind.
 
-- **Accuracy**: While we strive for accuracy, we cannot guarantee the completeness or correctness of all information. Companies change frequently, and data may become outdated.
-- **Not Investment Advice**: This index should not be used as the basis for investment decisions. Always conduct your own due diligence.
-- **Not Endorsement**: Inclusion in this index does not constitute an endorsement of any company, product, or service.
-- **No Affiliation**: This project is not affiliated with any company listed herein.
+**Please read our full [DISCLAIMER.md](DISCLAIMER.md) before using this data.** Key points:
+
+- Data is submitted by community volunteers and not independently verified
+- You must independently verify all information before use
+- Not responsible for inaccuracies, errors, or outdated information
+- Inclusion does not constitute endorsement or recommendation
 
 ## Data Sources