One ECG. Three roles. One on-chain identity.
Cardiac validates a live ECG, derives a privacy-preserving hash, and binds it to a soul-bound rootTokenId on Base 8453. Humans, agents and robots all use the same primitive — only the signing pattern changes:
Pair a sensor. Get a heartbeat.
Any RR-interval source works. The SDK normalises the signal — Cardiac doesn't care if it came from a chest strap, a watch or a 12-lead clinical machine.
Watch the heartbeat. Watch the network.
Left: a clinical-grade ECG monitor with toggle between recorded demo rhythms and a paired-device live stream. Right: mission control for the Cardiac network — devices, credentials, oracle health and a real-time event feed.
Pick a signal source
Humans
ECG-derived hash bound to an EOA wallet. Gasless enroll via the Cardiac Relayer · EIP-712 signed proof of life on every claim.
Live Explore →Agents
AI agents register a hashed apiKey on-chain and receive a rootTokenId. Quota, capability and swarm credentials all bind to that ID.
Live Explore →Robots
Physical robots bind via ROS2 device ID. Task-auth and swarm-cmd credentials are issued by an authorising human or agent root.
Live Explore →Wearables
Polar H10, Apple Watch, Galaxy Watch, Garmin HRM — RR intervals stream straight into the Cardiac Oracle over BLE or HealthKit.
Live Explore →Clinical ECG
12-lead and Holter machines via HL7-FHIR. Enables hospital-grade enrolment and re-verification for medical and insurance verticals.
Beta Explore →Smartphone PPG
Camera-flash PPG turns any phone into a low-fidelity HRV source — enough to refresh a credential without paired hardware.
Beta Explore →EEG · BCI
OpenBCI and invasive arrays — map cortical entropy alongside cardiac coherence for a dual-channel proof-of-self primitive.
Roadmap Explore →Implantables
Pacemakers and CIEDs as a long-horizon target — continuous proof-of-life for high-value identity and inheritance verticals.
Roadmap Explore →Where a heartbeat is a product
The Cardiac SDK is the single primitive. Every vertical is a credential type issued against the same soul-bound rootTokenId. The flowchart shows exactly how each vertical interconnects with the SDK — same hash, different credential.
Talk to the network. No wallet needed to try.
Spin up a sandbox identity, enrol a synthetic ECG, issue and check credentials — all from the browser. The same commands run live once a wallet is connected.
The full theory, in writing & in audio
The whitepaper formalises the cardiac process matrix — a CPTP map from a windowed ECG into a categorical identity posterior, equipped with a liveness index Λ that separates a living heartbeat from replay or synthesis. It documents the nine-layer pipeline from electrode contact to signed USDC settlement: acquisition, preprocessing, Pan–Tompkins fiducials, RR-interval extraction, SHA3 fingerprint, free-energy scoring against the MetaState anomaly endpoint, PMX lift, CRYSTALS-Dilithium Proof of Inference, and on-chain settlement through the audited splitter at 0x93a7…1BE4. It specifies how Cardiac composes with NWO-ASM as a first-class connector, with MetaState as a vertical, and with the NWO Robotics MCP as an attestation surface. Honest LIVE / BETA / DESIGN / ROADMAP labelling throughout, and the long-horizon path to PPG, EEG, and implantable signal sources. The companion podcast walks the same material end-to-end in roughly the time of a coffee.
Core SDK MIT-licensed and free to build on. Credential issuance settles in USDC on Base via the existing MetaState splitter — no new contract. Honest LIVE / BETA / ROADMAP labeling throughout.