JoeRuiz

Postage from the blockchain

There's a painting that was once shipped using an NFT. Not shipped to a digital wallet - shipped inside a box, via the U.S. Postal Service, with a Digital Stamp minted on the blockchain. At the USPS National Postal Forum, while most people were still figuring out how to explain NFTs to their parents, Joe Ruiz demonstrated the first autonomous transfer of an NFT certificate of authenticity for a physical painting - and the stamp that proved it was postage printed from the blockchain. It was, by any measure, an unusual Tuesday.

Ruiz is the CEO and Founder of DPS, the Digital Postal Service. The company builds what you might call trust infrastructure: certified email, certified postal mail, certified documents, and a Web3 postage platform that runs on blockchain rails. CaseMail, DPS's flagship product, has issued over 3 million certificates that have been presented in courts across every U.S. jurisdiction. It was the first blockchain-generated ePostage ever certified by the United States Postal Service - a distinction that took years of technical and regulatory groundwork to earn.

DPS sits at an odd intersection: old postal infrastructure, new blockchain protocols, and AI layered over both. It's not a company that's trying to replace the postal system. It's trying to make the postal system - and digital communication - provably trustworthy. Certified. Timestamped. Immutable. The kind of record that holds up in court. Which, it turns out, 3 million times over, it does.

In January 2025, DPS announced that CaseMail.AI was expanding to Microsoft clients via Azure Marketplace and AppSource. Organizations can now certify email conversations directly from Microsoft accounts using blockchain-backed technology and AI-driven security. That milestone completed a circuit Ruiz had been working toward for a decade: the fusion of AI, blockchain, and the trusted systems that businesses and legal teams already depend on.

Ruiz earned his undergraduate degree from the University of California, Santa Barbara. He went on to found VerTrius in 2015 - a "systems of trust" company that bridges traditional communications, commerce, and workflow automation with modern blockchain services. Both DPS and VerTrius share a common philosophy: the infrastructure of trust should be invisible, automatic, and verifiable. Not something you have to think about. Something that simply works, the way postage works.

He describes himself as a history enthusiast - which makes sense given who he descends from. Joe Ruiz is a direct descendant of John Hart, one of the 56 signers of the Declaration of Independence. Hart was a farmer, a legislator, a man who signed his name to a document knowing it could cost him everything. There's something fitting about a Hart descendant building technology that makes signatures provably real. The 250-year arc from quill to blockchain is, apparently, a family project.

DPS has grown to 150 employees and $13.3 million in revenue over four years. The company's headquarters are in Lewes, Delaware, though Ruiz operates out of San Jose, California. The product suite now covers certified email, certified postal mail, certified documents, digital asset ownership transfers, NFT postage tokens, and supply chain traceability. Partners include the USPS, Google, Microsoft, and Clio - the latter integration giving law firms direct access to blockchain-certified USPS mailing from within their practice management software.

Clio's integration with CaseMail is a telling detail. Law is an industry built on precedent, chain of custody, and provable communication. When a law firm uses CaseMail to send a certified letter via USPS, the blockchain hash of that letter becomes the evidence. The certificate can be presented in court. It has been, over 3 million times. Lawyers don't adopt new technology because it's cool. They adopt it because it works when it matters. DPS cleared that bar.

The broader DPS platform spans B2B and B2C: merchants verifying digital asset ownership, e-commerce players securing delivery proofs, supply chains tracking provenance, and anyone who needs to know - provably - that a document is real, untampered, and was sent when it was sent. The through-line across all of it is the same: immutable, blockchain-backed records that hold up under scrutiny.

Ruiz's model doesn't ask users to understand blockchain. DPS's value proposition is that the technology disappears into the process. You send a certified mail. The blockchain does its job. You get a certificate. If you ever need to prove anything, the record is there. That's the whole pitch - and it's working.