Chorus is the orchestrator of an outcomes-aligned federation. Members share a schema, contribute evidence, and compound learning across sites. Run as civic infrastructure, not as a platform.
Three groups are racing to give large language models better context. The incumbent platforms (Microsoft, Google, Salesforce) are building closed context engines bound to the seats they already sell. The horizontal startups (Glean, Maven AGI, Decagon) are betting that context is a product the enterprise will buy as a layer of its own. The open-protocol camp (Anthropic, with the Model Context Protocol since November 2024; Tim Berners-Lee's Solid; the data-trust movement) is wagering that context becomes a substrate, not a feature. None of the three is building the ecosystem layer for impact-aligned sectors. That is the Chorus bet.
Chorus is the orchestrator of a federation of organisations that share a destination, a vocabulary of outcomes, and a substrate any LLM can read against, without surrendering identity or sovereignty. Members of a Chorus join by signing what we call a Pact: a commitment to be context-aware, evidence-comparable, and accountable to a shared outcome. The architecture is five components, each earning its place in turn: an outcome ontology, the PEIRO evidence schema, a federated identity layer, a trust-and-governance stack, and the LLM-readable substrate that makes the first four useful for AI consumption.
BHOS is the first node of Chorus: a federation built specifically for bathroom-derived health signals. The bathroom is visited multiple times daily, produces continuous passive data, and is where early warning of the most costly chronic conditions first becomes detectable. It remains the least-monitored location in health and aged care, and the one where federated evidence has the most to add.
BHOS gives hardware manufacturers, sensor companies, operators, researchers, and outcome buyers a common structure to collect, describe, and compare what they observe, using the PEIRO standard (Population · Environment · Intervention · Response · Outcomes), Chorus's five-stage evidence schema. Two further federations are now in development on the same architecture: a senior living outcomes federation in the US, and an aged-care data collaborative in Australia. Each runs the same five components, with sector-specific outcome ontologies.
Explore BHOS →Chorus runs multiple proof-of-concept pilots, each independently scoped around a specific question. Some are live and recruiting partners now; others are in planning and open to co-development.
A federation is a contract between unlike parties who each gain from the federation existing. Chorus works because each group brings something different and learns something different. Every member signs the same Pact, with commitments scaled to their role.
Whether you want to join a live pilot, co-develop one of the planned studies, propose a new area of inquiry, or explore a founding-member role under the Pact, we would be glad to hear from you.