# Umarise

Startup, Worldwide.

> Anchor any file to Bitcoin to prove it existed at a specific time
>
> — in its own words, from umarise.com

- Website: https://umarise.com/blog/proof-of-existence
- Listed since: 2026
- launched: 2026-03-19
- launch post: https://news.ycombinator.com/item?id=47442086
- hn score: 2
- domain created: 2025-05-10
- Last verified: 2026-03-19


## Sources

- Hacker News, "Show HN" — https://news.ycombinator.com/item?id=47442086, read 2026-03-19

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startup.is · https://startup.is/registry/umarise · open data: /api/v1, /llms.txt