Indivisa LLC
Distinct systems, one discipline.
Indivisa builds software for evidence integrity, exact mathematics and local-first data. Each product gives the same answer for the same input, keeps your data where it is, and says plainly what its answer does not show.
Type anything. Your browser computes its SHA-256 fingerprint and draws it: 256 ticks, one per bit. Nothing is sent anywhere. The same input always draws the same ring.
SHA-256:
Four systems
Each one keeps something invariant.
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Hashit
Deterministic evidence envelopes. Fingerprint exact bytes on the device that holds them, then verify integrity and time offline.
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WITNESS
The evidence app. Fingerprint photos, video, audio or documents in the browser, keep one record, and check the files against it later.
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CDERE
Exact recognition and classification of second-order linear ODEs. It finds the classical equation hiding inside yours, and says when it cannot.
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COBOL Bridge
Local-first COBOL tooling. Deterministic ingestion of copybook-described mainframe data, with exact decimals and nothing sent over the network.
The discipline underneath
- 01 Deterministic
- Same input, same output, on any machine. Results can be recomputed by someone who does not trust us.
- 02 Local first
- Content stays with whoever holds it. Indivisa's systems work on fingerprints and structure, not on copies of your data.
- 03 Limits stated
- Every result says what it does not establish. A missing check is shown as missing, never hidden.
- 04 Checked from outside
- Known answers from published standards and independent implementations, not only tests we wrote for ourselves.
Working on something that has to hold up?
Indivisa is a small company. Messages are read by the people who build the software.