All written content on longevitymarbella.com is the original work of Longevity Marbella. We take its integrity seriously, so we protect it in three layered ways and make the proof public. The Dutch-language pages are translations of these originals. Since 19 July 2026, the content manifest covers both the English originals and the Dutch translations.
How this content is protected
- Copyright. The text, structure, and expression of every article are protected by copyright the moment they are created, under Spanish law and the Berne Convention. Reproduction or republication without written permission is prohibited.
- Cryptographic fingerprinting. Each published article and page, in English and in Dutch, has a unique SHA-256 fingerprint recorded in a published content manifest. Any later change to the text would change its fingerprint, so tampering is detectable.
- Blockchain timestamping. That manifest is timestamped with OpenTimestamps, an open, independent standard that anchors the record into the Bitcoin blockchain. This proves the exact content existed on or before its recorded date, with no need to trust us or any single company. Anchoring completes within about a day of each update, so a very recent manifest may still show as pending.
Verify it yourself
You do not have to take our word for any of this. The records are public, and cover both the English originals and the Dutch translations:
- Download the content manifest: content-manifest.txt
- Download the blockchain timestamp proof: content-manifest.txt.ots
With the free OpenTimestamps tools, ots verify content-manifest.txt.ots shows the anchored date once confirmation completes, and comparing an article's SHA-256 hash against the manifest confirms the text is unchanged.
Using our content
We are glad for people to read and share links to our articles. What is not permitted is copying, republishing, or repurposing the text without written permission. If you would like to reference or license any of it, please get in touch.