Open Client Registry (OpenCR) vs Senzing Entity Resolution

Open Client Registry (OpenCR) links patient identities across information systems to support care coordination, continuity of care and reporting. It offers configurable matching using probabilistic and deterministic methods, and can assign or look up unique identifiers and accept FHIR messages from point-of-service systems such as labs and EMRs. Its interface lets users inspect records and break matches. A deployment uses the OpenCR Service and HAPI FHIR Server with OpenSearch or Elasticsearch; OpenHIM is optional. Transactions, including queries, are stored as audit events in HAPI FHIR and can be viewed in the UI. OpenCR is open source and is listed for API, Linux, macOS, self-hosted, web and Windows environments. It is not a shared health record and does not contain patient clinical data. The production installation guide expects Linux, command-line familiarity and Linux administration expertise; HAPI FHIR needs a production database backend such as PostgreSQL or MySQL. JWT and other user authentication solutions are not provided out of the box and can be added for a deployment. The project describes itself as a community project intended for adaptation to different use cases.

Senzing Entity Resolution combines fragmented records into entity profiles and surfaces links among them for fraud, compliance, and AI applications. The maker describes its engine as real-time, relationship-aware, self-tuning, and self-correcting, without custom training or tuning. It says the engine starts in under one second and scales from tens to billions of records within a customer’s infrastructure. Decisions can include an audit trail explaining matches, contributing features, and a confidence score. Senzing says customer data stays in that infrastructure and does not flow to Senzing, Inc.

Deployment options include bare metal, Docker, Kubernetes, private cloud, AWS, Azure, and air-gapped environments. Integrations include Python, Java, C#, Rust, Node.js, and an MCP server; AWS Marketplace and Microsoft Marketplace handle real-time JSON requests and responses. The SDK’s free license covers 500 source records, while the AWS Marketplace trial covers 250,000. A listed subscription is $58,560 a year for 10M DSRs, with support included.