Sigillum: Smart Authentication
A security-first smart packaging solution that combines batteryless NFC tags with AES-256 cryptographic protection, blockchain notarization and tamper detection, designed to increase resistance to cloning, counterfeiting and tampering across the product lifecycle.
Explore Sigillum SolutionsCertify, Authenticate, Protect
Sigillum's mission is to provide a simple, scalable and cybersecure solution to protect physical products in industries exposed to fraud and counterfeiting. Its cryptographic NFC tags combine cryptographic authentication with blockchain notarization, so authenticity can be verified from production to end user. Sigillum is developed by LEAF Labs.
Secure Your Products NowCore Technology Components
Sigillum combines cryptographic hardware tags, blockchain notarization and tamper detection to verify product authenticity
Cryptographic NFC Tags
Batteryless NFC tags with AES-256 cryptographic protection and cryptographic authentication. Each verification checks the tag cryptographically, a design intended to increase resistance to cloning and counterfeiting.
Blockchain Notarization
Each individual tag can be notarized on blockchain (EVM-based networks such as Ethereum, Polygon, Cronos and Fantom, selected per project), creating a tamper-evident record of each product's authentication history that different parties can refer to over time.
Tamper Detection
Tamper detection and tamper evidence reveal attempts to open or manipulate a protected item. Tags can be integrated into a blockchain-based system that allows remote invalidation, so a tag considered compromised no longer verifies as authentic.
Zero-Trust, App-Free Verification
Anyone can verify a product with a smartphone scan: an NFC tap or the QR code option opens verification directly in the browser, with no app to install. Verification follows a zero-trust concept: no scan is trusted by default, and every check relies on cryptographic authentication.
Industry Applications
Sigillum is designed for high-value products exposed to counterfeiting, tampering and fraud
Luxury & Fashion
Help protect brand value with cryptographic authentication that customers and resellers can check with a smartphone scan, at purchase or on the secondary market.
Wine & Spirits
Apply cryptographic NFC tags to bottles and closures so buyers can verify authenticity with a smartphone and tamper evidence reveals whether a bottle has been opened.
Pharmaceuticals
Tamper-evident tags and blockchain records can support product traceability workflows; LEAF has demonstrated end-to-end traceability in a demo project. Sigillum is designed to support pharmaceutical traceability requirements within each company's own compliance framework.
Electronics & Art
Help counter warranty fraud and return scams in electronics, and certify provenance in art markets, with authentication tied to each individual item.
How Sigillum Works
Register the asset on the platform or via APIs
Apply the cryptographic Sigillum NFC tag
Scan with a smartphone to verify authenticity and detect tampering
What Sigillum combines
Cryptographic protection with verification that anyone can run from a smartphone
Sigillum tags use AES-256 cryptographic protection. Each individual tag can be notarized on blockchain. Blockchain notarization has been validated on EVM-based networks, including Ethereum, Polygon, Cronos and Fantom. The network is selected per project.
App-free verification
Verify authenticity through a web experience on compatible NFC smartphones.
Cryptographic authentication
Each verification checks the AES-256-protected tag cryptographically instead of relying only on a static identifier.
Blockchain notarization
Record verification evidence with the integration and notarization scope defined for your deployment.
Custom batteryless tags
Configure tag format and packaging integration around the product and its verification requirements.
Cryptographic Protection
AES-256 cryptographic protection and cryptographic authentication, designed to increase resistance to cloning and counterfeiting.
NFC and QR Options
Batteryless NFC tags for cryptographic authentication, with a QR code option for simpler verification flows.
Tamper Evidence and Remote Invalidation
Tampering attempts are revealed at verification, and tags considered compromised can be invalidated remotely through a blockchain-based system.
No App Required
An NFC tap or a QR scan from a smartphone verifies authenticity without installing an app, reducing friction for end users.
Frequently Asked Questions
Everything you need to know about Sigillum's smart authentication technology
Sigillum is a smart packaging security solution developed by LEAF Labs. It combines batteryless NFC tags with AES-256 cryptographic protection, blockchain notarization and tamper detection to help brands verify product authenticity from production to end user.
Each tag uses AES-256 cryptographic protection and cryptographic authentication: during verification the tag is checked cryptographically, instead of trusting a static identifier that could be copied. This approach is designed to increase resistance to cloning and counterfeiting.
No scan is trusted by default. Every verification relies on cryptographic authentication, and each individual tag can be notarized on blockchain, so authenticity does not depend on a printed label or on a single unverifiable claim.
Each individual tag can be notarized on blockchain. This creates a tamper-evident record of a product history that manufacturers, distributors and consumers can refer to when checking authenticity over time. Blockchain notarization has been validated on EVM-based networks, including Ethereum, Polygon, Cronos and Fantom. The network is selected per project.
Consumers tap the batteryless NFC tag with an NFC-enabled smartphone, or scan the QR code option with the phone camera. Verification opens directly in the web browser, with no app to install and no account to create.
Tamper detection and tamper evidence reveal attempts to open or manipulate a protected item. Tags can be integrated into a blockchain-based system that allows remote invalidation: a tag considered compromised can be invalidated remotely, so it no longer verifies as authentic.
Sigillum is designed for products exposed to counterfeiting or tampering, such as luxury and fashion, wine and spirits, pharmaceuticals, electronics and art. For regulated sectors it is designed to support traceability requirements, such as pharmaceutical traceability, within the compliance framework of each company, without replacing the certifications a company must obtain.
Sigillum supports NFC and QR code verification. A QR code option supports simpler verification flows alongside NFC. Blockchain notarization has been validated on EVM-based networks, including Ethereum, Polygon, Cronos and Fantom. The network is selected per project. Cloud deployment options and API integration with existing systems are available, configured per project.
Pricing is defined per project. It depends on the tag technology, volumes, integration scope, deployment requirements and the level of support you need. Contact LEAF for a proposal tailored to your project.
Contact LEAF with a description of your products and supply chain. Tag format, verification flow and integration with existing systems are defined together for each project.
Still have questions?
Tell us about your products and supply chain. The LEAF Labs team will help you assess how Sigillum fits your authentication needs.
Contact Our ExpertsSchedule Consultation