Digital Postal Services
Certified postal mail, certified email, digital stamps, delivery evidence, and records designed for legal, government, compliance, and business workflows.
Explore Certified CommunicationsDigital Trust & Verification Infrastructure
Digital Trust. Independently Verifiable.
DPS creates the infrastructure that connects digital and real-world activity to independently verifiable evidence—giving organizations a better way to establish, protect, and prove trust.
Trust should be verifiable—not simply claimed.

What DPS Does
DPS provides the technology and service infrastructure organizations use to certify communications, protect record integrity, connect records to real-world products and events, and make evidence independently verifiable.
Certified postal mail, certified email, digital stamps, delivery evidence, and records designed for legal, government, compliance, and business workflows.
Explore Certified CommunicationsCryptographic document fingerprints, digital certificates, provenance, ownership and custody records, and public blockchain evidence.
Explore Blockchain VerificationInfrastructure for digital product passports, origin and shipment records, supply-chain provenance, and cross-border verification workflows.
Explore International VerificationDigital Trust Infrastructure
DPS is digital trust and verification infrastructure that connects identity, certified delivery, cryptographic records, blockchain evidence, provenance, and public verification across physical and digital workflows.
The system is designed to create independently verifiable evidence around specific events and records without requiring end users to manage cryptocurrency or blockchain wallets.
Hybrid Architecture
DPS combines controlled private records with selected public blockchain evidence so organizations can manage identity, permissions, status, and sensitive data while preserving independently verifiable proof.
Record the document, communication, identity, product, shipment, asset, or event that needs evidence.
Create cryptographic fingerprints and associate verified parties, timestamps, status, and supporting records.
Maintain the authoritative private record and publish selected evidence or events to a public blockchain when appropriate.
Allow authorized users or the public to retrieve status, history, and evidence through DPS-powered verification experiences.
Featured Platforms
DPS powers specialized platforms and verification networks while remaining the broader technology and trust-infrastructure brand.
CaseMail
CaseMail applies DPS infrastructure to certified communications, delivery evidence, document records, and legal or compliance workflows.
COA Chain
COA Chain is a DPS-powered registry and verification network built on the same underlying identity, record-integrity, and blockchain evidence capabilities.
International Trade Verification Network
Designed to extend DPS verification infrastructure into origin, product passport, provenance, custody, and cross-border record workflows.
Introducing COA Chain
Powered by DPS, COA Chain creates independently verifiable records for certificates, products, batches, shipments, and assets. Its first application helps laboratories, manufacturers, sellers, and consumers protect and verify Certificates of Analysis.
The roles are intentionally distinct: DPS provides the infrastructure, COA Chain provides the network, COA.1 is the independently verifiable record, and COAScan provides public access and verification.
How DPS Verification Works
The exact workflow varies by service, but the DPS model separates the underlying record from the specific evidence used to establish identity, integrity, delivery, association, and status.
Capture the communication, document, certificate, product, shipment, asset, or event that requires verifiable evidence.
Connect relevant identities, issuers, recipients, products, batches, timestamps, delivery events, or custody information.
Use cryptographic fingerprints, status history, private registry records, and selected public blockchain anchoring.
Allow users, partners, or the public to confirm the record's current status and independently verifiable evidence.
Industries We Support
DPS is designed for organizations that need durable evidence around communications, documents, products, shipments, certificates, or assets.
Certified communications, notice evidence, delivery records, and document workflows.
Official communications, agency records, verification, identity, and audit trails.
Laboratory certificates, product and batch records, manufacturing evidence, and public verification.

DPS Credentials
DPS evolved from certified communications into a broader digital trust, certificate, blockchain, provenance, delivery, and verification infrastructure company.
Integration & Partnerships
DPS supports API, enterprise, government, legal software, laboratory, supply-chain, and technology-partner integration models. The goal is to make verification part of the workflow rather than a separate destination.
Questions & Answers
Clear boundaries matter. DPS is designed to provide evidence around identity, records, status, delivery, association, provenance, and blockchain history without overstating what that evidence proves.
DPS is digital trust and verification infrastructure that connects identity, certified delivery, cryptographic document records, blockchain evidence, provenance, and public verification across physical and digital workflows.
No. Blockchain evidence can help prove that a particular digital fingerprint, timestamp, status, or event was recorded. It does not by itself prove scientific accuracy, product safety, regulatory compliance, ownership legitimacy, or the truth of an underlying statement.
DPS provides the underlying infrastructure. COA Chain is a DPS-powered registry and verification network. COA.1 is the independently verifiable record created through the network, and COAScan provides public access and verification.
DPS is designed to support walletless user experiences, allowing organizations and end users to benefit from blockchain evidence without requiring them to manage cryptocurrency or personal blockchain wallets.
Start a Conversation
Tell us what needs to be certified, connected, tracked, or independently verified. We can help map the right DPS service, platform, or integration model.