Legally admissible digital evidence

A quarter century in the service of truth

From electronic registered mail (2000) to sovereign blockchain: one foundation of truth for law, information, gemstones and the living world.

See the proofs of authority Contact / Mandate

Five truths

💎

Mineral truth

Carat.technology

Gemstone identification and certification, GIA qualification.

gems.nataf.com →

🌳

Plant truth

Rain

Plant identification and planting.

plantatree.nataf.com →

🔗

Digital truth

Notification with probative value

Patent for notification with probative value, blockchain.

certification.nataf.com → · La Poste de Côte d'Ivoire →

⚖️

Manifesting the truth

Mishpat

Law and legal advice.

legal.nataf.com →

📰

Bearing witness to the truth

Journalism

Journalism, media, Google News.

Media → · Press review →

💎 Le Figaro Magazine 2004 : « Les trésors cachés de Ramat Gan »

Proofs of authority

International patent

WIPO WO2009077806

Secure notification method, filed in 2009. Technical foundation of the whole ecosystem.

WIPO file →

State production

La Poste de Côte d'Ivoire — since 2021

State registered electronic mail with probative value, in production since 2021. laposte.ci

BBC News Afrique · RFI, 2021 · Jeune Afrique, 2021

Gemmology

GIA Graduate Gemologist — 2016

Diploma of the Gemological Institute of America, Carlsbad, California. GIA-GG / Gem-A qualifications.

Verifiable identity

did:web:nataf.com

Decentralised identity published on the domain.

DID document →

Historical press

The Jerusalem Post2026 Israël 24/7 · emet.press2023–2026 Portuguese Jewish News2022–2026 Le Parisien1998 The Sunday Times1998 ABC News1999 Reuters2000 Yedioth Ahronoth2000

Presse

Le Figaro Magazine, 18 December 2004

« Les trésors cachés de Ramat Gan »

by Christophe Doré with David Nataf, pp. 44-45 — cover story « Le diamant dans tous ses éclats ».

Read the article (PDF) →

Le Figaro Magazine 2004 — Page 44 — Page 44

Le Figaro Magazine 2004 — Page 45 — Page 45

Media

David Nataf writes and publishes articles every day in three languages, indexed in Google News. For seven years, he covered Asian news as a correspondent for i24NEWS, in French and English. Former editor-in-chief of CitizenKane, accredited by the Israeli and Thai governments.

Career

1998
SIGINT expert with the European Parliament.
Dec. 2000
lettrerecommandee.com — first consumer registered electronic mail.
2001
Founded NextAdvantage.
2004
Invented the churn market: Resilier.com.
2009
WIPO patent WO2009077806 — secure notification method.
2019
Founded the Porto gilding workshop.
2021
Production with a state operator: La Poste de Côte d'Ivoire.
2024
Ecosystem Carat.technology, Rain, Mishpat, Salamandre.

The Porto workshop

In Porto, for seven years, David Nataf has been reviving in his gilding workshop a founding art of Portuguese culture: medieval illumination. It dates back to the kingdom's earliest manuscripts, such as the biblical commentaries copied around 1139 for the monastery of Santa Cruz of Coimbra, now held at the Porto Municipal Library, or the Apocalypse of Lorvão (1189), a masterpiece preserved at the Arquivo Nacional da Torre do Tombo and inscribed on UNESCO's Memory of the World register.