You, the intermediary
- You refer a data owner whose records failed your intake.
- You list the checked dataset.
- Buyers get the receipts with the data.
For data intermediaries
We clean dirty data at scale. With an audit trail.
Stop turning data away. Sell more of it.
You see it every week: a company with years of records that would sell, and records too dirty to put your name on. ZH checks every record against the document it came from, inside the owner’s environment, and returns a dataset with a verdict and a receipt per record. You list it. They earn from it. Nothing passes through us or you.
560 million records of our own, cleaned this way. More than 11.6 million verification runs in production. Patent pending.
What changes for you
Three things you can’t do today
Say yes to the data owners you currently decline. The fix happens on their side; you get the clean set.
Put a receipt behind every record you list. Buyers can replay the check; your due diligence stops being a questionnaire.
Charge more for a checked dataset than an unchecked one. Provenance is the thing your buyers are already asking about.
How it works between the three of us
The owner keeps the data. You keep the listing. We do the check.
The data owner
Data stays here- ZH runs in the owner’s environment, on their platform or ours if they ask, against their source documents. Their data never leaves the agreed environment.
- Records that don’t match go back for repair, up to five passes. What can’t be repaired goes to a person at the owner with the evidence attached.
- The owner gets a dataset where every record carries one of eight outcomes and a signed receipt.
Brightstead
Deploys ZH into the owner’s environment.
Never holds the data and never sees it through you.
No arrow out of the owner’s column. The records stay where they are.
ZH checks provenance, not truth. A record is passed when it matches its source, and never because a model decided it looked right.
What a receipt is
What was checked, against which document, when, and by whom
Illustrative receipt
- Checked
- 3 claims, 3 passed
- Against
- R1, R2, R4 and their source documents
- When
- 2026-10-31 14:02:11 UTC
- Chain
sha256 9f2c…a71e- Signature
ed25519 4b1d…0c93
Replayable: the same input returns the same verdicts.
Fictional sample values, not a real signed receipt.
Every decision is signed and logged. SHA-256 audit chain, Ed25519 signatures. Your buyer’s auditor can replay it without calling anyone.
What we built this way
We did this to our own data first
Brightstead built GrantAuthority with ZH checking every record as it loaded. Built in months.
560M
records
2.19M
foundations mapped
6.3M
historical grants
GrantAuthority counts as of September 17, 2026.
Partnership terms, in plain language
Simple on purpose
A referral agreement
You introduce, we deploy, you’re paid on signed contracts. One set of terms for every partner.
No lock-in
No exclusivity, no white label, no minimums.
Your client is your client
We work in their environment; we don’t market to them around you.
No data in the middle
You never see their data through us, and we never see it through you.
Partnerships are subject to a separate signed referral agreement. An inquiry does not enroll you or create a payment obligation.
Tell us who you turn away
We aim to reply within two business days.
If you like dirty data, we aren’t a fit.