CaseMail
Certified communications for postal mail and email correspondence evidence.
DPS PLATFORM ECOSYSTEM
Purpose-Built Platforms, Powered by Shared DPS Infrastructure.
DPS turns its digital trust and verification infrastructure into focused platforms for high-value communications and independently verifiable records.
CaseMail applies DPS infrastructure to certified communications. COA Chain applies it to certificate, product, batch, shipment, and asset verification workflows.
Certified CommunicationsRegistry & VerificationShared DPS Infrastructure
DPS InfrastructureIdentity · Certificates · Verification · APIs
COA Chain
Registry and verification network for certificates, products, batches, shipments, and assets.
One DPS foundation · purpose-built platform experiences
WHAT ARE DPS PLATFORMS?
Focused platform experiences built on the same trust and verification foundation.
DPS Platforms turn shared infrastructure into purpose-built applications and networks for specific workflows, audiences, and verification needs.
D
DPS Platforms are purpose-built applications and networks that use shared DPS identity, certificate, blockchain, verification, evidence, and integration infrastructure. For the initial DPS.io launch, the platform portfolio includes CaseMail and COA Chain.
PLATFORM PORTFOLIO
Two platforms. Different workflows. One DPS infrastructure layer.
Visitors can enter through the platform that matches the job they need to accomplish while DPS provides the shared infrastructure underneath.
CERTIFIED COMMUNICATIONS
CaseMail
CaseMail is the DPS Certified Communications platform for certified postal mail, email correspondence certification, communication evidence, certificates, and connected enterprise workflows.
- Certified Postal Mail
- Certified Email correspondence certification
- Certificates and Digital Evidence Archive
- Enterprise and partner integrations
REGISTRY & VERIFICATION NETWORK
COA Chain
COA Chain is a DPS-powered registry and verification network that connects verified participants with certificates, document fingerprints, product and batch records, shipments, assets, status history, and public verification.
- Verified organizations and issuers
- COA.1 persistent verification records
- Product, batch, shipment, and asset associations
- COAScan public verification
SHARED DPS FOUNDATION
One infrastructure layer powers different platform workflows.
The platforms are different at the application layer, but they can rely on the same underlying DPS capabilities for identity, integrity, certificates, verification evidence, and integrations.
Identity & Issuer Verification
Connect organizations, registrants, issuers, and authorized representatives to the records and workflows they manage.
Explore identity verification →Document & Certificate Integrity
Use cryptographic fingerprints, timestamps, status history, and digital certificate records to preserve document integrity evidence.
Explore document verification →Public Verification
Resolve identifiers, status, record history, and selected public evidence through platform-specific verification experiences.
Explore public verification →APIs & Enterprise Integrations
Connect supported platform workflows to enterprise, government, legal, laboratory, and partner applications.
Visit developers.dps.io →WHICH DPS PLATFORM FITS THE WORKFLOW?
Start with what you need to verify or certify.
CaseMail and COA Chain share DPS infrastructure, but each platform is optimized for a different type of record and workflow.
| Platform question | CaseMail | COA Chain |
|---|---|---|
| Primary purpose | Certified postal mail and email correspondence evidence. | Certificate, product, batch, shipment, and asset registry and verification. |
| Core record | Communication record connected to tracking, certificates, delivery or correspondence evidence. | Persistent COA.1 record connected to identity, document integrity, associations, status, and verification evidence. |
| Typical users | Legal, government, compliance, enterprise, and organizations managing important communications. | Laboratories, manufacturers, brands, sellers, supply-chain participants, marketplaces, and verification partners. |
| Public or third-party verification | Certificates and supported communication evidence can be retrieved and shared through CaseMail workflows. | COAScan and COAScan.net provide the public-facing verification experience for COA Chain records. |
| Dedicated destination | DPS CaseMail Platform | DPS COA Chain Platform |
HOW THE DPS PLATFORM MODEL WORKS
Enter through the platform. Keep the verification infrastructure connected underneath.
1
Choose the platform
Start with CaseMail for certified communications or COA Chain for certificate, product, batch, shipment, and asset verification.
2
Create or connect the record
The platform captures the workflow-specific communication, certificate, document, product, batch, shipment, or asset record.
3
DPS maintains the trust layer
Shared DPS capabilities can connect identity, document integrity, certificates, status history, blockchain evidence, and other supported verification signals.
4
Retrieve, verify, or integrate
Platform users, authorized third parties, public verification services, and connected enterprise systems can access the supported record and evidence.
START WITH THE WORKFLOW
Choose the DPS experience that matches the record you need to manage.
Platforms provide focused experiences. DPS solutions and networks extend the same infrastructure into specialized verification and multi-party workflows.
Certified communicationsUse CaseMail for certified postal mail, email correspondence certification, certificates, and communication evidence.
Certificates, products, batches, shipments & assetsUse COA Chain for persistent registry records, COA.1, and COAScan verification.
International multi-party verificationExplore the International Trade Verification Network for connected cross-border participants, documents, products, shipments, and verification records.
DPS PLATFORM ARCHITECTURE
DPS provides the infrastructure. Each platform provides a purpose-built experience.
The platform portfolio lets DPS serve very different business workflows without forcing every audience into the same application or brand experience.
DPSDigital trust and verification infrastructure
DPS Platform Portfolio
CaseMailCertified Communications
COA ChainRegistry & Verification Network
COMMON QUESTIONS
DPS Platforms FAQ
What are DPS Platforms?
DPS Platforms are purpose-built applications and networks that use shared DPS identity, certificate, blockchain, verification, evidence, and integration infrastructure. For the initial DPS.io launch, the platform portfolio includes CaseMail and COA Chain.
Which DPS platforms are available?
The initial DPS platform portfolio includes CaseMail, the DPS Certified Communications platform, and COA Chain, the DPS-powered registry and verification network for certificates, products, batches, shipments, and assets.
What is CaseMail used for?
CaseMail is used for certified postal mail, email correspondence certification, communication certificates, delivery and correspondence evidence, retained digital evidence, and connected enterprise workflows.
What is COA Chain used for?
COA Chain is used to create persistent verification records that can connect verified participants with certificates, document fingerprints, products, batches, shipments, assets, status history, and public verification evidence.
Are CaseMail and COA Chain separate from DPS?
CaseMail and COA Chain are distinct DPS-powered platform brands. DPS provides the shared digital trust and verification infrastructure, while each platform applies that infrastructure to a different workflow and audience.
Can DPS platforms integrate with enterprise software?
Yes. DPS supports API and partner integration workflows so approved enterprise, government, legal, laboratory, supply-chain, and technology systems can connect supported DPS platform functions to their existing applications. Developer resources are available at developers.dps.io.
Where does the International Trade Verification Network fit?
The International Trade Verification Network is part of the DPS Networks category rather than the Platforms category. It connects DPS verification capabilities across multi-party international product, document, shipment, custody, and verification workflows.
PURPOSE-BUILT EXPERIENCES · SHARED DPS INFRASTRUCTURE