01
Verifiable history
Registration, custody, cutting, treatment, certification and ownership are linked across Ethereum, Aptos and Cardano so buyers can inspect the evidence themselves.
Our purpose
About GemChain
A cross-chain provenance platform designed to make a gemstone's recorded story independently checkable.
GemChain gives every registered stone a durable digital identity, then connects the people, events, and laboratory evidence that shape its journey.
Evidence should be inspectable—not merely asserted.02
Independent expertise
GemChain does not grade, appraise or authenticate stones. Independent laboratories issue records under their own signing authority.
03
Clear platform boundaries
Ownership, listings and requests reflect participant and chain records. GemChain does not custody funds or execute purchases.
Where it began
Built as an engineering investigation
GemChain began as a final-year project exploring whether one stone's history could remain independently verifiable across multiple blockchains instead of relying on a single centralised registry.