Your work.
Certified. Forever.
50% of authenticated works sell for more. 60% of independent makers have had their designs stolen. One tap changes everything.
Trusted by artists · shapers · jewellers · furniture makers · edition labels
It doesn’t matter what you make. It matters that you made it.
From oil paintings to surfboards. From jewellery to furniture. From sneaker customs to ceramic editions. If you made it by hand, Keryx makes sure the world knows it.
Register your work
Upload documentation of your piece — photographs, materials, dimensions, your story. No technical knowledge required.
Embed the seal
A secure chip is paired to your work, creating an unforgeable link between the physical object and its authenticated record.
The record endures
Every transfer, exhibition, and ownership change is documented automatically. Your provenance builds itself.
Fine Art & Sculpture
Your signature on the work. Your name on the record. Permanent and unforgeable.
Surfboards & Equipment
Every board has a story. Make sure yours travels with it.
Furniture & Craft
In a world of replicas, prove yours is the original.
Jewellery
Your maker's mark — permanent, verified, and yours alone.
Sneaker Customs
Your customs deserve authentication too. Not just the shoe underneath.
Collectibles & Editions
Verifiable scarcity proof — not a printed number on a box.
premium authenticated works command over undocumented equivalents
of independent jewellers have experienced design theft
cost to certify your first work with Keryx
to verify any certified object with a phone tap
your record survives any platform, company, or server
Authorized by Global Institutions
Someone is claiming your work as their own.
Counterfeits and copies
Your designs appear on Shein. Your shapes are replicated overseas. Your customs are faked with your branding. Paper certificates don't stop this.
You get no credit at resale
Your work sells on the secondary market for multiples of what you charged. You see none of it. The buyer can't even prove it's yours.
Provenance disappears
A paper certificate gets lost. A platform shuts down. A link rots. Twenty years from now, who proves you made it?
Make your work impossible to claim, copy, or forget.
Unforgeable proof of authorship
A secure chip embedded in your work creates a permanent, cryptographic record of who made it, when, and where. No paper. No platform dependency.
Tap to verify. Anywhere, forever.
Any buyer, collector, or curator taps their phone to your work and instantly sees your name, your story, your record — permanently.
Earn when your work changes hands
Authenticated works command 40–60% more at resale. Set automatic attribution so your name — and optionally your royalty — travels with the work.
Three steps. Then it lasts forever.
No technical knowledge required. If you can photograph your work, you can certify it.
Built for every vertical.
Match-worn jerseys are among the most counterfeited items in sports. Traditional certificates are easily forged.
Each garment receives an embedded secure chip at manufacture. Fans verify ownership instantly — no third-party validation required.
European Football Club
First club with fully authenticated match-worn jerseys. Fans tap the shirt and instantly see the match, the player, and the goal video — permanently on record.
"The shirt carries its own truth."
Three layers. One truth.
Secure Hardware
Tamper-evident NFC chips and physical PUF (Physical Unclonable Function) elements embedded at the point of manufacture. The hardware cannot be cloned.
Challenge-Response Protocol
Every verification generates a unique cryptographic proof on-chip. No two proofs are alike. No proof can be fabricated without the hardware.
Permanent Record
Verification events, ownership transfers, and provenance data are committed to a permanent, tamper-proof record. The archive endures.
Compliance is the floor, not the ceiling.
“A QR code is compliant. A Keryx chip is trustworthy.”
Meets the letter of the regulation. Does not protect the physical object.
Meets the regulation. Protects the object. The standard for 2030 and beyond.
Why the protocol matters.
| Keryx | QR Codes | Standard NFC | Centralised Platforms | |
|---|---|---|---|---|
| Clonable? | No | Yes | Yes | No |
| App required? | No | No | Yes | Yes |
| Offline verification | Yes | No | No | No |
| Permanent record | Yes | No | No | Partial |
| Open protocol | Yes | Yes | No | No |
| Hardware security | Yes | No | No | No |
Physical objects.
On-chain forever.
Keryx is the missing primitive for Real World Assets. Every physical object gets its own ERC-4337 smart account — hardware-signed, permanently on-chain, and composable with any protocol.
Non-transferable. Chip-bound. ERC-5192. The permanent, unforgeable record of the object's existence — readable in 2050 with zero dependency on Keryx.
Optional ERC-721 issued by the creator. Three transfer modes: PHYSICAL_BONDED (chip signature required on every transfer), FREE_TRANSFER (standard ERC-721), or BONDED_WITH_UNLOCK.
Creator-issued post-delivery. EventAccess, Loyalty, ContentDrop, ProofOfPresence, CoCreatorEdition. Creator retains perpetual minting rights regardless of current owner. Each mint is a new fee event.
“Every other phygital platform ties the validity of your asset to their servers. Keryx is the only protocol where the digital identity lives permanently on-chain — readable in 2050 with zero dependency on us.”
Hardware & Infrastructure Partners
Built by practitioners.
Daniel Hernández Rodríguez
Co-Founders · eSignus Security Solutions S.L.
José Ramón Sendra
Co-Founders · eSignus Security Solutions S.L.
Already in the field.
Sports & Memorabilia
Fully authenticated match-worn jerseys. Fans tap the shirt and instantly see the match, the player, and the goal video — permanently on record.
"The shirt carries its own truth."
Action Sports
Chip embedded at manufacture by the maker. Every piece carries verified maker certification, materials data, and resale authentication — no brand expert needed.
"From the maker's hands to every use — permanently verified."
Art & Collectibles
Original physical works with embedded chip. Every exhibition, loan, and restoration logged as an immutable authenticated event.
"The artwork carries its own unforgeable biography."
We’re selecting partners for a limited pilot.
Institutional access is reserved for organisations with a clear use case. Tell us about your project and we’ll be in touch within 48 hours.
For developers → docs.keryx.xyz