Blockchain Development for Healthcare: Integrating With Legacy EHR Systems

A Practical Playbook for Decision-Makers

If you're in charge and looking to mix blockchain tech with systems like Epic, Oracle Health, or other older EHRs, you’re in the right place! This guide will help you navigate that process smoothly. This method really lets you make the most of TEFCA, FHIR Bulk Data, R5 Subscriptions, and verifiable credentials. Plus, it ensures you stay on the right side of HIPAA regulations and keeps your clinical workflows humming along without a hitch!

Key Considerations

1. Get to Know TEFCA: It’s super important to really understand what the Trusted Exchange Framework and Common Agreement (TEFCA) is.
It makes it super easy to share data across different health systems.

2. Get to Know FHIR Bulk Data: Take some time to dive into FHIR, which stands for Fast Healthcare Interoperability Resources, especially when it comes to bulk data. It's a useful tool that can really help streamline things! This is a total game-changer when it comes to easily accessing and sharing healthcare data in a consistent manner. It's really going to streamline things!

3. Set Up R5 Subscriptions: Take advantage of R5 Subscriptions to keep yourself in the loop with any important data updates. This lets your systems stay up-to-date automatically, so you won't have to worry about doing it all yourself.

4. Integrate Verifiable Credentials: Let’s dive into how verifiable credentials can boost trust and security when it comes to sharing patient information. These credentials can really make a difference in ensuring that the data shared is reliable and secure. This technology helps show that the data we’re dealing with comes from a trustworthy source.

Steps to Integration

• Evaluate Your Current Systems: Check out the electronic health records (EHRs) you’re using right now. Get a feel for what they do well and where they might fall short.
• Keep It Compliant: Make sure your blockchain setup stays on the right side of HIPAA rules. This is non-negotiable.
• Get Everyone on Board: Bring in all the key players--like tech teams, doctors, compliance folks, and so on--to come up with a solid plan for integration. It's all about teamwork!
• Pilot Testing: Before diving in headfirst, it's a good idea to run some pilot tests. This way, you can check out how the integration holds up in real-world situations.
• Get Some Feedback: Once the pilot wraps up, take the time to gather feedback. It’s super important to hear what worked and what didn’t so you can tweak things and make the workflow and tech integration even better.

Resources

If you're interested, definitely take a look at the TEFCA website for some great insights! If you're looking to learn about FHIR resources, you should check out the HL7 FHIR documentation. It's a great place to start! Check out the R5 Updates to catch up on the newest info about subscriptions. You don't want to miss it!

• Check out Verifiable Credentials to get a grip on how they help things work together smoothly.

This playbook is designed to help you tackle the tricky process of bringing blockchain into your healthcare systems. It’s all about making things easier for you as you figure out how to make it work. Don’t forget to tweak these steps to fit your own situation, and make sure to keep the conversation flowing among everyone involved!

Modernizing Consent, Audit, and Data Integrity for 2026

Are you ready to explore what the future holds? Let's chat about some cool ways we can modernize consent, audits, and data integrity. We can do this by using off-chain FHIR, on-chain proofs, and some cutting-edge PQC-ready cryptography. It’s an exciting topic, and I can’t wait to dive into it with you! Here's a game plan to help you kick off that top-notch integration in 2026.

Step 1: Embrace Off-Chain FHIR

Alright, so let's dive into off-chain FHIR! This is a total game-changer for handling health data in a smart way, all without relying on the blockchain for everything. Using FHIR (Fast Healthcare Interoperability Resources) really helps keep your data accessible and super easy to share. It’s a great way to streamline everything! It's kind of like having a super organized filing cabinet rather than a chaotic disaster!

Why Off-Chain?

• Scalability: You've got the ability to manage a larger amount of data without the blockchain getting all jammed up.
• Cost-Effective: You’ll save on transaction fees since not everything has to be stored on the blockchain.
• Flexibility: It’s super handy to tweak things or make updates whenever we need to.

Step 2: Implement On-Chain Proofs

Alright, so let’s dive into on-chain proofs next! This is where all the exciting stuff goes down! When you tie off-chain data to the blockchain, you really get the best of both worlds. It's like having the reliability of the blockchain combined with the flexibility of off-chain information. This approach keeps things honest and reliable while still being fast.

Benefits of On-Chain Proofs:

• Immutable Records: Once something's on the blockchain, it sticks around for good.
• Verification: You can easily authenticate off-chain data anytime you need it.
• Audit Trails: Make it easy to see how things have changed over time with clear and straightforward logs.

Step 3: Choose PQC-Ready Cryptography

And finally, let’s talk about PQC-ready cryptography--that’s Post-Quantum Cryptography for those unfamiliar with the acronym. This is the exciting stuff that tackles the security challenges posed by quantum computing.
Hey there! With quantum computers just around the corner, it’s super important to think ahead when it comes to your data security. Choosing post-quantum cryptography (PQC) is a smart move to make sure your sensitive info remains safe, even when quantum tech becomes a reality. Don’t wait until it’s too late!

Why PQC Matters:

• Better Security: Keep your data safe from any potential quantum attacks.
• Long-Term Viability: Make sure your systems are set up to last for years down the line.
• Compliance Ready: Keep yourself on top of the latest regulations that require top-notch security.

Bringing It All Together

Alright, so how do you pull all these pieces together for a smooth production-grade integration in 2026? Here’s a handy checklist to help you out:

1. Figure Out What You Need: Take some time to really think about the kind of data you'll be working with and what tools will be the best fit for your project. 2. Build a Prototype: Begin with a simple proof of concept to work out any issues that might arise. It’s a great way to test the waters before diving in fully! 3. Engage Stakeholders: It's super important to gather input from everyone involved. By doing this, you can ensure that everyone is aligned and on the same wavelength. 4. Keep Tweaking and Enhancing: Take in feedback to fine-tune your strategy and create a solid system. 5. Launch and Keep an Eye On Things: Go ahead and launch it, then make sure to monitor how it’s performing and stay on top of security.

If you take on these steps, you'll be setting yourself up to create a cutting-edge framework that will really hold its own over the years! Alright, let’s dive in and start crafting the future!

Why 2025-2026 is different: the interoperability stack finally stabilized

TEFCA is officially up and running! We've got a solid lineup of designated QHINs, including folks like CommonWell, Epic Nexus, eHealth Exchange, Health Gorilla, KONZA, MedAllies, and Kno2. Exciting times ahead! Oh, and guess what? eClinicalWorks is getting on the bandwagon in January 2025! So, the ONC is launching its FHIR Roadmap for TEFCA V2, which is pretty exciting! They're introducing support for FHIR APIs in stages. This will cover both facilitated exchanges and QHIN-to-QHIN communications. To top it off, they've got some pilot tests lined up for 2025. Can't wait to see how it all unfolds! If you want to dive deeper into it, check out this link here. It's got all the details you need!

So, here’s a cool update from Epic: as of June 2-3, 2025, more than 1,000 hospitals and a whopping 22,000 clinics are already up and running on TEFCA! That’s pretty impressive! They’re hoping to get all customers switched over by the end of the year. This will definitely help simplify all that back-and-forth with data for blockchain pilots that rely on solid clinical information. It’s going to make things a lot smoother! Hey, if you want to dive into the details, just click here. It’s got all the info you need!

• Great news! HTI-1 is officially up and running. If you're a certified API developer, just a heads-up that you'll need to have your FHIR base URLs published by December 31, 2024. Don't miss that deadline! The ONC rolled out some transparency rules for predictive algorithms used in certified health IT. This is pretty cool, especially when you consider that your blockchain layer can keep tabs on where the model inputs and outputs come from! If you want to dive deeper into this topic, you can check out more details here.

So, the W3C has gone ahead and standardized Verifiable Credentials 2. As of May 15, 2025, this includes JOSE/COSE along with some selective-disclosure patterns. This is awesome for creating patient consent receipts and really helps build trust across networks that can be securely stored on-chain. If you want to dive deeper into this topic, just click here. There's a lot of great info waiting for you!

Hey there! So, NIST has just finished up its first-ever post-quantum crypto FIPS, which includes ML-KEM, ML-DSA, and SLH-DSA. This is a big deal because it’s setting the stage for some super flexible crypto solutions that will keep our medical records secure for the long haul and ensure that on-chain attestations are solid. Exciting times ahead! If you want to dive deeper into the details, you can check it out here.

The integration outcomes that actually move the needle

• Consent you can actually rely on: this is all about the permissions patients give, which they can change their minds about anytime. It's flexible and allows for selective sharing, plus everything's verified through electronic health records, insurance companies, and various apps.
• An unchangeable audit that moves at the speed of a clinical environment: it provides cryptographic proof of who accessed what information, when they did it, and under what policy-- all without the need to store any personal health information (PHI) on a blockchain. When it comes to analytics, integrity is key! By using anchor hashes for FHIR Bulk Data exports, we can ensure that payers, regulators, and clinical partners can easily verify that the data hasn’t been tampered with. This way, they can confidently use the information for quality assessments, risk evaluations, or research without worrying about any funny business.

Minimum viable architecture (MVA) for EHR-blockchain integration

1. Identity and Consent
   Hey there! How about we transform consent into a W3C Verifiable Credential (VC)? Sounds like a plan, right? 0). You’ve got a couple of options! You can either use a patient wallet or take care of everything right through your app. This way, users get to keep full control over their experience. If you're looking at selective disclosure, I'd recommend checking out SD-JWT or BBS-based cryptosuites. They’re pretty solid options! Just store your credential hashes or revocation bitstrings on the blockchain, and you’re good to go! (w3.org).

2) Interop Backbone

• You can tap into clinical data using: Your provider's electronic health record (EHR) system is super easy to use thanks to SMART on FHIR APIs. These APIs make it simple for everyone to access and manage their health info. For those who are a bit more tech-savvy, there are also SMART Backend Services that allow for system-to-system connections. And you'll love this - they use short-lived tokens that last just 5 minutes for added security! You can connect through TEFCA using a Qualified Health Information Network (QHIN). Some examples of these networks include CommonWell, Epic Nexus, Health Gorilla, KONZA, MedAllies, Kno2, and eHealth Exchange. This setup is just right for handling nationwide queries and Individual Access Services (IAS). For more info, just check this out! here. It's got all the details you need.

3) Data Movement Patterns

• Real-time: If you need to stay updated on things like admissions, lab results, or discharges, you can use FHIR R5 Subscriptions. Alternatively, if you're working with older systems, the R5 Backport to R4/R4B is also a solid option.
• Batch: Take a look at FHIR Bulk Data (that’s the Flat FHIR NDJSON format) if you want to export cohorts into your analytics lake. It’s a super handy way to get the job done! Don't forget to lock those export manifests on-chain! If you’re looking for more info, just click here. You'll find all the details you need!

4) Blockchain Layer

So, we're diving into a permissioned network, kind of like Hyperledger Fabric. This setup has everything you need, including secure data collections for those sensitive business details, organized channels to keep the consortium running smoothly, and chaincode to handle consent and audit processes. The idea here is to focus on keeping just the non-PHI proofs. We’re talking about things like keyed HMACs for export manifests and VC status lists. If you're interested in exploring more, you can take a look at it here.

5) Crypto‑agility

For now, it's best to just go with the usual TLS along with Ed25519 or ECDSA for your encryption. It’s a solid choice! Just a heads up--make sure you keep an eye on migrating to NIST ML-KEM (FIPS 203) and ML-DSA/SLH-DSA (FIPS 204/205) for key management and digital signatures. Once those FIPS-validated libraries start rolling out, it’ll be a great time to make that switch! If you're interested in diving deeper into this topic, definitely hop over to nist.gov for all the details!

Three integration patterns we deploy most in 2025

1) Event-Driven Micro-Audits with FHIR Subscriptions

• What it does: It lets you subscribe to specific topics, like “lab-results-new” or “discharge-summary-final,” so you can grab just the key event details without any of that pesky PHI.
• How it works:
• Go ahead and set up a Subscription or SubscriptionTopic. You can choose to do this using R5 or if you prefer, you can use the Backport on R4. Whenever something happens, create a keyed HMAC that includes the following: the FHIR server ID, the Resource Type and ID, the version ID, the timestamp, the purpose of use, and the policy ID. So, you'll want to create the HMAC and make sure to include some pointers (but leave out the PHI) when you upload it to the blockchain. It's also a good idea to keep the whole audit record saved in your HIPAA-compliant storage for safekeeping.
• Verifiability: Downstream systems have the ability to generate the HMAC from the audit store and confirm that it matches what's recorded on the blockchain.
• Why it’s a win: You get a solid, unchangeable lineage that won’t bog down the clinicians. And don’t forget about Inferno’s Subscriptions Test Kit! It’s been around since July 22, 2025, and it’s a great way to make sure everything’s on point before you launch. Take a look at this: fhir.healthit.gov. You'll find some good info there!

2) Bulk Data Integrity for Value‑Based Care

• What it does: This feature lets you export FHIR Bulk Data every night for various groups. It’s a breeze for payers or quality auditors to review the datasets used for HEDIS, risk assessments, or figuring out care gaps. No more hassle--just straightforward access to the info they need!
• How it works:
  Alright, so to kick things off, we’re using SMART Backend Services with 5-minute tokens to start the $export process. You can think of it like exporting for a group of patients or even for all patients at once.
• Alright, up next, we're going to calculate the Merkle root using those NDJSON files. Next, we’ll lock in the root hash and send the metadata on-chain, while keeping the manifest and individual file hashes stored off-chain. If there's ever a disagreement, anyone involved can just recalculate the hashes and check them against what's already on the chain. It’s a pretty straightforward way to sort things out!
• Why it’s better: This method gives you the benefits of cryptographic accountability, all while ensuring that your Protected Health Information (PHI) stays secure and untouched. No need to shuffle it around through different channels! Take a look at this: (hl7.org). You might find it interesting!

3) Patient-Centric Consent via TEFCA + VCs

• What it does: Basically, this allows an IAS provider to pull a patient’s records from various networks using a QHIN. It works by providing a special kind of proof, called a selective-disclosure VC proof, which confirms that your app is supported for a particular reason and for a set period.
• How it works:
  The patient can easily give their consent right in the app, and then you just send a VC 2. 0 to their wallet.
• Your app connects to IAS via your QHIN, such as Health Gorilla. So, here’s the deal: we’ve got this VC proof in place. The QHIN keeps track of the consent reference, and there's an on-chain bitstring status list that lets us see whether the VC is still active or if it’s been revoked. And the best part? It does all this without revealing any personal health information. Pretty neat, right?
• What makes it awesome: You can take consent with you wherever you go, it’s really simple to revoke if you need to, and TEFCA keeps a clear record of everything. Take a look at this: (healthgorilla.com). It's pretty interesting!

EHR‑specific integration notes (what to expect)

• Epic
• TEFCA: Epic Nexus is officially in the game and they’re making some serious progress with onboarding. By June 2025, more than 1,000 hospitals are already up and running! You can take advantage of Epic’s FHIR endpoints and check out the Connection Hub listings to seamlessly integrate them into your workflows. TEFCA really helps simplify things by reducing those annoying one-off network agreements, which is definitely a major win! (fiercehealthcare.com).
  • Practical path:
    First things first, go ahead and register your SMART Backend app. After that, you’ll want to set up your OAuth2 client credentials using JWT assertions. Oh, and don’t forget to make sure those 5-minute access tokens are in place! If you want some near real-time action, go ahead and set up your R5 Backport Subscriptions for your R4 installs to kick off your audit pipeline! Alright, so when you're dealing with cohorts, make sure you set up Bulk Data $export so that downloads can be resumed if needed and that you've got checksum verification in place. Oh, and remember to anchor those Merkle roots on-chain--super important! You can find more details here: build.fhir.org. Happy coding!
• Oracle Health (Cerner)
  On May 8, 2025, the Oracle Health Information Network made some great progress, moving from an applicant to a candidate in the TEFCA program. Then, on November 20, 2025, they proudly announced that they had officially received their designation. Exciting times for them! So, basically, they're now offering a smooth, nationwide connection for all their customers. You can easily connect with the Oracle Health Connection Hub to handle all your interoperability governance and auditing requirements. It's a handy tool that makes managing everything a breeze! Take a look at this link: (oracle.com). It's worth checking out!
• Awesome aggregators and networks to tap into.
• CommonWell (QHIN) focuses on delivering MPI/RLS services and they do it on a nationwide level. Vendors such as Redox and Particle are hopping on the CommonWell train to help digital health apps connect more easily with TEFCA.
  Check it out here!. So, just so you know, Health Gorilla is officially recognized as a QHIN and also operates as a QHIO in California. If you've got users spread out across the country and need to sync up with both TEFCA and California’s DxF, this is just what you need! Get more info here!.

Compliance you can defend (HIPAA, information blocking, and governance)

• Business Associate Posture: So, here’s the deal: if your job includes creating, receiving, keeping, or sending electronic Protected Health Information (ePHI) for a covered entity, or even if you're just running systems that could be handling ePHI, then you fall under the category of a Business Associate. So, basically, you’ll need to sign those Business Associate Agreements (BAAs) and make sure you're sticking to the Security Rule requirements. This includes things like putting safeguards in place, making sure any subcontractors are on the same page, and keeping up with incident reporting. This still applies even if your team doesn’t typically “see” the PHI, like when it's encrypted while you're handling it. Check it out here.
• Information Blocking Enforcement: We're really seeing a push against information blocking these days! The TEFCA’s IAS use case is all about making sure patients can get their hands on their own data. The HHS has been pretty straightforward about the penalties--they can hit developers and HINs with fines of up to $1 million for each violation. And for those involved in certain CMS programs? There are definitely some disincentives to watch out for. So, it’s smart to set up your consent and audit processes in a way that makes it super easy for patients to get access to their information. Trust me, it'll save you a lot of headaches down the road! If you're looking for more info, you can check it out here.
• Tracking Tech Pitfalls: So, in 2024, some court decisions ended up scrapping parts of the OCR's rules on online tracking for pages that don’t require logging in. But hey, just a reminder--if you're dealing with authenticated portals, you still have certain responsibilities to keep in mind. Hey, just a quick reminder to keep your analytics SDKs on their toes--it's super important to make sure that PHI (protected health information) doesn't accidentally leak from patient-authenticated areas. If you want to dive deeper into this topic, you can check out more details here. Stay safe out there!

Security engineering: what we implement by default

Honestly, you should really avoid putting any PHI on the blockchain. Instead, focus on the key proofs. Think about things like HMACs with a rotating key--just remember to keep that key secure in a hardware security module (HSM). Also, don’t forget about Merkle roots and the VC status bitstrings! If you need to keep any sensitive metadata in a chain context, it’s best to use Fabric private data collections. Don’t forget to set up some purge policies to manage that info. Also, make sure the ledger is hash-only for everyone on the public channel. That way, you’ll keep things secure! (hyperledger-fabric.readthedocs.io). If you're thinking about token discipline, I recommend going with SMART Backend Services that use short-lived tokens. Try to keep those tokens under 300 seconds--that’s the sweet spot! Don’t forget to switch up your keys now and then! Also, make sure to pin your JWKS with some cache-control. And remember, keeping things secure means sticking to least-privilege system scopes, like using system/Patient.read. It's all about staying safe out there! (hl7.org).

• Make sure you’ve got a game plan for post-quantum cryptography (PQC). To kick things off, take a good look at how you're currently using crypto. It’s a smart idea to dive into the details for areas like TLS, data-at-rest, code-signing, and on-chain signature domains. Getting a clear picture now will set you up for success later! Start by giving ML-KEM a whirl for setting up keys on non-clinical routes, like inter-service channels. While you're at it, don’t forget to whip up some migration playbooks for ML-DSA and SLH-DSA. (nist.gov). Hey there! Don’t forget to use DS4P labels on your FHIR resources. They’re really handy for tagging important stuff like confidentiality, purpose of use, and consent references. It just makes everything clearer and more organized! This way, you can really step up your sharing game. Instead of sticking to that old “all-or-nothing” method, you can go for a more nuanced approach that takes policies into account. Oh, and just a quick reminder--you can totally log the label set you used during the exchange in your blockchain audit! (build.fhir.org).

Data flow blueprints you can copy

• Real-time audit (R5 Backport).
• Go ahead and set up a SubscriptionTopic named "lab-result-final." ”. Hey there! Just a quick note: if the client wants to get their subscription all set up, they’ll need to hit up this link: https://audit.yourco.com/fhir-hook. Easy peasy!
• After that’s all set, the FHIR server will shoot out a notification bundle. So, your hook grabs that data, pulls in the Observation, builds up the audit JSON, and then goes ahead and calculates the HMAC for the metadata. Here’s how it’ll look:.
• On the blockchain: transaction details include {hmac, resource reference, policy ID, and timestamp}.
• Off‑chain: You'll keep the complete audit in a HIPAA-compliant environment, which means it's all encrypted and set up with WORM for added security. Hey, just a quick reminder--don't forget to do those periodic reconciliations! Make sure you recalculate those HMACs from off-chain so you can double-check those chain anchors. It's always good to keep things in sync! (hl7.org).
• Bulk Integrity (Population Services) Alright, let’s kick off the $export process at 2:00 AM. Once we do that, let’s keep an eye on the Content-Location until we finally get that 200 OK response. Once we’ve got that, we can go ahead and download the NDJSON parts. Sounds good? Once that's done, go ahead and calculate the SHA-256 for each file along with the Merkle root. Alright, now go ahead and save that manifest.json file. It’s gonna have the list of files along with their hashes included in it.
• When it comes to the blockchain, make sure you jot down the root hash, the manifest digest, how it’s going to be used, and the version of the dataset. This lets consumers easily double-check and figure things out for themselves. (hl7.org).
• Getting patient consent using TEFCA's IAS and VCs. So, when a patient hits the “Connect my records” button, their wallet opens up and shows an SD-JWT proof of consent. This proof is all tied to a specific purpose, the scope of what’s being shared, and how long it’s valid for (that’s the time-to-live or TTL). So, when the IAS request comes in, it travels through your QHIN, and all the connected systems are good to go with it as the foundation for the exchange. Also, if the patient decides to take back their consent, the on-chain status list quickly updates to revoke it right away. (healthgorilla.com).

Epic, Oracle Health, and TEFCA: what to line up during procurement

• Epic
  Hey, just a quick reminder--make sure you've got those FHIR R4 endpoints set up and that everything's in line with Bulk Data requirements. Also, it’d be good to see if there’s any plan for backporting R5 Subscriptions support. Hey there! So, when it comes to getting onboard with TEFCA, the first step is to make sure your organization is registered as a Participant with the QHIN you’ve picked. And if you're working with a consumer app, don’t forget to validate your IAS. It’s an important part of the process! Hey, before you dive in, why not take a moment to check out the Inferno Subscriptions kit and give the Bulk Data conformance suites a test run? It could really help you get a feel for things! You can check them out right over here. Enjoy!
• Oracle Health
  Hey there! If your healthcare providers are using Oracle, you might want to check out the Oracle Health Information Network (QHIN). It could open up some great opportunities for national information exchange. It's definitely worth a look! You can handle your connections easily using the Connection Hub, and it's a great way to ensure that your audit model matches up with their access reports. (oracle.com).
• Aggregators
  Hey, if you’re dealing with a lot of EHR systems, you might want to take a look at Redox or Particle. They could really help you out! They provide normalized FHIR and give you access to TEFCA through their CommonWell QHIN membership. Just keep in mind to think about the costs when you’re weighing your options against setting up direct QHIN participation on your own. (redoxengine.com).

Emerging best practices we recommend for 2026 rollouts

• TEFCA + FHIR for a Bigger Impact: While the ONC/RCE team is busy navigating through the stages of the FHIR Roadmap--shifting from the facilitated phase to full QHIN-to-QHIN interactions--let’s keep in mind the importance of designing systems where QHINs can really shine as the backbone for discovery and routing. Meanwhile, we want to leverage those FHIR APIs to handle the data side of things effectively. That way, you won’t have to mess around with re-wiring everything when Stage 3/4 FHIR is finally out there for everyone. Take a look at this: rce.sequoiaproject.org. It's definitely worth checking out!
• VC-native consent: It's a good idea to stick with VC 2 as a standard. Let's focus on getting that zero data model rolling, publishing those schemas, and making sure we include support for JOSE/COSE and SD-JWT. This will really help us ensure smooth compatibility across various ecosystems! When it comes to handling revocation, it's best to use Bitstring Status Lists and just put the hash of that list on-chain. This keeps things efficient and tidy! If you want to dive deeper, check out this link: w3.org. There's a lot more info waiting for you there!
• Crypto agility sprints: How about setting up some quarterly drills? It’s a great way to mix up your keys and try out PQC-hybrid handshakes in low-stakes situations. Just a little practice can make a big difference! Make sure you keep all your records organized for the auditors. It’s a good way to show that you’re prepared to retire those pre-quantum algorithms whenever you need to. For all the details, check out this link: csrc.nist.gov.
• Label your data: Make sure to use DS4P FHIR security labels. This helps keep your authorization in line with policies--like when you need to keep SUD or behavioral health notes separate. Plus, it’s super important for your blockchain audit to reflect all the labels that were part of each data exchange. For more info, check this out: (build.fhir.org).

A caution on legal landscape shifts

Hey there! So, here’s the scoop: the HIPAA Security Rule is about to get a bit of a refresh. On January 6, 2025, they're rolling out a proposal that comes with some tougher requirements. We're looking at stricter stuff like multi-factor authentication, better encryption, regular patching, and improved incident response plans. Sounds like it’s going to be quite the change! Hey there! Just a heads-up--you're gonna want to brace yourself for some elevated expectations when it comes to your Business Associate Agreements (BAAs) and audits. It’s a good idea to set aside some funds for penetration tests and think about network segmentation too. Just a little planning can go a long way! (reuters.com). When we chat about enforcing information blocking and Individual Access Services (IAS), we’re really aiming for more than just focusing on treatment. The TEFCA's IAS is really going to encourage organizations to simplify their patient APIs. Just a quick reminder--make sure you sync up your consent verification and audit sidecars. That way, you’ll have everything you need to show you’re compliant. (hhs.gov).

Implementation timeline (what “good” looks like)

• Weeks 0-4: Setting the Stage for Governance and Security. Alright, here’s the plan: first, make sure you get those Business Associate Agreements in place with the covered entities and your QHIN partner. It’s super important! Next, whip up some data flow diagrams to visualize everything clearly. Don’t forget to dive into the DPIA and TRA--those are key to keeping things compliant.

Then, let’s get your HSM and KMS set up. This will help secure your data better. After that, take some time to put together your crypto-inventory and sketch out your Post-Quantum Crypto roadmap. It might feel like a lot, but just take it one step at a time! You've got this! Take a look at the info over on HHS.gov. You'll find all the details you need there!

• Weeks 5-10: Connecting the Dots and Laying the Foundation. Hey there! It’s time to get your SMART Backend app(s) registered. Don’t forget to set up those FHIR endpoints, check out the token lifetimes, and get your Subscriptions and $export sandboxes all prepped and ready to go! Alright, so go ahead and choose the chain network, which is Fabric, and then set up a development channel that includes private data collections.
  If you’re looking for more details, check out build.fhir.org. It's got everything you need!
• Weeks 11-16: Let's Dive into the First Value Slice! Alright, let’s kick things off by rolling out an event-driven audit for one of our Subscription topics. Don’t forget to anchor those hashes on-chain while you’re at it! And let’s make sure we gather all the evidence in a SOC-2 style to keep everything nice and organized.
• Weeks 17-24: Taking Things Up a Notch and Getting Organized. How about we start by adding Bulk Data anchoring for one population? Then, let's get you set up with TEFCA through your QHIN. We can also try out the VC-based consent with IAS for a specific scenario, like managing care after someone gets discharged. Sounds like a plan? Check out more about this at healthgorilla.com. You’ll find some great info there!

What 7Block Labs delivers

We've got some awesome blueprints and tools to speed things up, like subscription hooks, bulk exporters, and VC 2! We’ve got zero consent services in place, along with fabric chaincode that’s designed for audits and attestations. So, as we dive into TEFCA readiness, we're focusing on a few key areas: picking the right QHINs, integrating IAS, validating our endpoints, and setting up those ONC conformance testing pipelines. It’s a lot to juggle, but we’re on it! We're really focused on keeping things secure and compliant! That means we’ve got HIPAA-ready controls in place, a crypto-agility program that follows the NIST PQC guidelines, and we take an evidence-first approach when it comes to auditing. We've got you covered!

Bottom line

Integrating blockchain into current EHR systems isn't just a cool idea anymore; it's actually happening right now! With all the cool stuff from TEFCA/QHIN connectivity, FHIR Bulk Data, and Subscriptions, along with that VC-based consent and a nifty "proofs-not-PHI" chain design, you can actually set up workflows that your compliance team and clinicians will both love.

Need an architecture review or want to kick off a pilot project in just 90 days? Look no further than 7Block Labs! We’re here to help you get your tech stack off the ground, ensure you’re in sync with your QHIN, and deliver real value--without causing any hiccups in your care delivery. Let's get started!

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The article talks about a few key references you should know about: there's the TEFCA FHIR Roadmap along with its pilot projects, Epic's take on TEFCA, and some important timelines around HTI-1/endpoint and AI transparency. Oh, and it also touches on W3C VC 2. Hey there! So, here’s the scoop: we've got NIST PQC FIPS, SMART Backend tokens, and the Bulk Data IG all in the mix. Plus, don’t forget about the Subscriptions R5 along with the handy test kit. Also on the agenda is DS4P, and we're keeping an eye on the QHIN landscape--specifically the progress from CommonWell, Health Gorilla, and Oracle Health. Exciting times ahead! Feel free to take a look at this link: healthit.gov. It's got some great info!