Proof of Ownership, Made Private and Effortless
Saphyr is a privacy-preserving proof platform. With a simple tap, you can generate cryptographic proof that you control specific wallets—and by proxy the assets inside—without exposing private keys or sharing unnecessary personal data. Today, proof often means signing from hot wallets or handing over sensitive documents. That's risky, clunky, and hard to scale online or in-person. Saphyr replaces that friction with hardware-backed attestations that are verifiable anywhere.
Make proving ownership, identity, and eligibility effortless and safe for everyone—reducing risk, minimizing disclosure, and keeping users in control.
We combine three pillars into one seamless experience: the NFC-enabled Saphyr Key for tamper-proof signatures; a unified Dashboard to link wallets across chains and manage your portfolio; and instant Attestations that third parties can independently verify through the Saphyr Explorer.
We envision a world where proving is as simple as a tap—selective by default, verifiable by design, and accessible to both crypto-native and non-technical users. Our principles guide every decision: Usability, Interoperability, Scalability, Security, Privacy, and Practicality.
Below are the four core features that bring this vision to life—each designed to work together for a secure, private, and intuitive proof experience.
Four Core Features, One Seamless Experience
Each component is designed to work together, creating a complete proof-of-ownership ecosystem that's secure, private, and incredibly easy to use.
Saphyr Key Hardware
The physical foundation of trust. This NFC-enabled device generates tamper-proof cryptographic signatures without ever exposing your private keys.
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Portfolio Management
Manage and prove ownership of your entire digital asset portfolio from one dashboard. From crypto holdings to NFTs, demonstrate control without revealing private details.
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Instant Attestations
Generate cryptographic proofs of wallet control in seconds. Create verifiable attestations remotely or in-person that third parties can independently validate.
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Saphyr Explorer
Public verification tool that allows anyone to independently validate attestations and explore the Saphyr ecosystem with complete transparency.
Read moreSaphyr Key Hardware
The Saphyr Key is a compact NFC-enabled hardware device that uses Elliptic Curve Encryption to generate tamper-proof cryptographic signatures without ever exposing your wallet's private keys. Available in multiple form factors to suit your lifestyle and security preferences.
Unlike traditional methods that require risky private key exposure, the Saphyr Key enables instant verification with a simple tap against any NFC-enabled smartphone. The device is registered on-chain through a smart contract, creating an immutable association with your wallet.
Whether you're proving funds for a loan, demonstrating NFT ownership, or verifying identity, the Saphyr Key makes it effortless while keeping your assets secure. The physical nature of the device provides an additional layer of security for your attestations.
Portfolio Management
Your digital asset portfolio spans multiple blockchains and asset classes—the Saphyr Dashboard brings it all together in one unified interface. Link wallets from multiple chains, including Bitcoin, Ethereum, XRPL, Flare and more.
Each wallet undergoes secure verification that proves your control without exposing private keys or requiring asset transfers. Once linked, you can generate attestations for any combination of wallets, giving you granular control over what you prove.
The dashboard provides portfolio insights while maintaining privacy—you see your complete holdings, but attestations reveal only what you choose to share. Whether proving minimum balances, demonstrating holdings, or showing NFT ownership, the system gives you complete control with an interface designed for both crypto-native users and newcomers.
Instant Attestations
Attestations are the core proof mechanism of Saphyr. In seconds, you can generate cryptographically verifiable proof that you control specific wallets at a precise moment in time—proving ownership of any assets those wallets contain.
The process is simple: tap your Saphyr Key against an NFC-enabled device, and the system generates a tamper-proof attestation with your wallet address, cryptographic signature, and timestamp data. Attestations can be generated remotely or in-person.
The cryptographic foundation ensures attestations cannot be forged or manipulated. Third parties can independently validate any attestation through the Saphyr Explorer—the blockchain provides the ultimate source of truth, transforming loan applications, asset verification, and identity checks into seamless, secure interactions.
Saphyr Explorer
The Saphyr Explorer is a public verification tool that allows anyone to independently validate attestations, explore Saphyr Key registrations, and research historical proof events without requiring permission.
Validators can verify attestations in real-time, researchers can analyze ecosystem patterns, and users can publicly demonstrate their participation. All data is cryptographically verifiable and immutably stored on the blockchain.
The interface presents complex cryptographic proofs in an intuitive, searchable format for both technical and non-technical users. Whether you're verifying business claims or researching the ecosystem, the Explorer provides complete transparency.
Proof in Four Simple Steps
1. Get Your Saphyr Key
Purchase your NFC-enabled Saphyr Key and register it securely through our guided setup process.
2. Link Your Wallets
Connect any of your crypto wallets across supported blockchains to your Saphyr Key.
3. Generate Attestations
When proof is needed, tap your Saphyr Key to create tamper-proof, cryptographic attestations of wallet control.
4. Share & Verify
Send the attestation link to any counterparty who can independently validate it on-chain or through the Saphyr Explorer.
What is Saphyr?
Saphyr is a cryptographic ecosystem that provides immutable proof-of-ownership for digital assets and privacy-preserving identity verification.
How does the Saphyr Key work?
The NFC-enabled Saphyr Key holds a secure element that signs challenges without exposing your underlying private keys, producing tamper-proof proofs on demand.
What is an Attestation?
An Attestation is a signed, timestamped statement generated through Saphyr proving that a specific wallet was under your control at a precise moment.
Which blockchains does Saphyr support?
At launch Saphyr will support Bitcoin, Ethereum, Flare, Songbird, Dogecoin, and XRPL with additional networks supported in the future.
How does Saphyr protect my privacy?
Proofs reveal only the minimum information required. Sensitive data and full wallet balances remain private, and you choose exactly what to share.
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