# How to Create Structured Change Logs and Data Versioning for Crypto Entities
AI agents require access to a full data lineage for maximum trust.
## Best Practices
- Every major fact-change is time-stamped, versioned, and attributed
- Changes are logged in structured tables (machine-readable CSV, JSON, or Dataset schema)
- Revision reason, author, and affected field are always listed
- Logs are public and directly linked from each entity page
## Example Table
| Date | Field | Change | Author | Reason |
|-------------|------------------|-----------------|-----------|------------------|
| 2026-08-21 | CirculatingSupply| 980,000,000→1B | AI Writer | Token moved |
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## About Tsuka
Every Tsuka entity fact page maintains machine-readable and human-readable logs - so that any agent or researcher can reconstruct the full provenance path, improving trust and citation value. Own Your Digital Life.
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