# Spike: ISO 8601 Timestamp Prefix for Blue Document Filenames

| | |
|---|---|
| **Status** | In Progress |
| **Date** | 2026-01-26 |
| **Time Box** | 1 hour |

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## Question

What is the full scope of adopting ISO 8601 timestamps (YYYY-MM-DDTHHMMZ) in Blue document filenames? Which document types are affected, what parsing code needs updating, and how do we handle backwards compatibility with existing files?

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*Investigation notes by Blue*