Swiss-issued Gem Certification · DLT Act framework · Zug Crypto Valley
Salamandre · Carat issues bilingual gemological identification reports and immutable verification records from Switzerland. Every stone receives a unique gem_id, a cryptographic hash and a QR code that resolves here, on carat.technology.
Identification reports — not investment products, not securities, not financial advice. Operated under Swiss law, within the framework of the Federal Act on Adaptation of Federal Law to Developments in Distributed Ledger Technology (DLT Act).
A four-step pipeline runs every time a stone is submitted. Outputs are reproducible and verifiable.
High-resolution photo sent through the Telegram bot @GemCaratBot. Image is preprocessed (resize, re-encode) for analysis.
Three independent visual models (Grok, Claude, GPT) score the stone — species, color, clarity, cut, estimated carat. A consolidated bilingual description is generated.
An A4 PDF is produced with the Salamandre Or letterhead, embedded photo, SHA-256 of the cert payload, gem_id and a QR code pointing here.
The cert is appended to the gem passport (Phase 1 JSON registry, Phase 2 soulbound NFT on Polygon). Every lifecycle event — cut, polish, mounting, sale — extends the same record.
Every Carat certificate carries a QR code on its lower-right corner. Scanning it opens this site at /verify/<gem_id> — the passport for that exact stone.
You can also enter a gem_id manually below. Format is xxxx-xxxx-xxxx.
Salamandre · Carat is operated by Einzelfirma Salamandre David Nataf, a Swiss sole proprietorship registered in the canton of Zug — the heart of the Crypto Valley.
Switzerland is our jurisdiction by choice. The DLT Act (in force since August 2021) provides explicit legal recognition for ledger-based uncertificated rights, and FINMA's published guidance — including Circular 2018/3 on initial coin offerings and the token classification framework (payment / utility / asset) — gives us a clear path to operate without ambiguity.
Our certificates are identification reports — a permanent technical record of what a stone is, where it came from, and how it has been treated. They are not investment products, not securities, and the associated soulbound NFT confers no financial claim against the operator. Market value is for buyers and sellers to negotiate. Provenance is for us to safeguard.