The system of record for what your media numbers mean.
You own your data.
You don't own what it means.
So you can defend every number, survive every agency change, and tell a real shift from a redefinition.
For the head of media analytics who has to say which number is right, and why.
The problem
Your numbers are only as good as the memory of why they're defined that way.
Think of a house you've lived in for years, where nobody ever wrote the deed. You're in it, you rely on it, but the proof of what's yours and what it all means was never drawn up. It lives in the heads of whoever's currently in the building: your agency, your platforms, an analyst who left last spring.
It walks out the door. Every agency change, re-org, and departure takes the reasoning with it. Why is iROAS defined this way? Which lookback window does the dashboard actually use? What did we already test? Nobody left can say for sure.
The ground moves under you. Platforms rewrite the meaning of a metric on their own schedule. A media number can drop fifteen or thirty percent because a definition changed, not because anything real did, and you find out a quarter too late.
Nobody in the room owns it. Agencies won't hold this for you, because portable knowledge makes them replaceable. Platforms can't, because nobody audits their own definitions. So the meaning of your measurement belongs to everyone but you.
The stakes
The risk of not owning this doesn't land on the analyst. It lands upstairs.
CFO the budget
You're reallocating eight or nine figures against a number nobody can source. The lift that justified the shift turns out to be a definition change, and you learn it after the budget has already moved.
CDO the truth
You're accountable for a single source of truth whose meaning lives outside your walls, in an agency's queries and a platform's release notes. You own the integrity of numbers you don't actually control.
CRO the revenue
You're making commercial calls, and if you run a media network, reporting results to advertisers, on measurement you can't defend the day someone asks how it was built.
When nobody owns the meaning, the whole company decides on numbers it can't defend. The bill comes due at the board meeting, the budget review, and the agency transition.
What it is
We write your Measurement Deed, and then we keep it current.
A Measurement Deed is a record built only from your own corpus - your queries, your definitions, your QBR decks, your test history. One client, one locker, nothing pooled with anyone else. The engagement produces three things you own outright.
Your measurement has a memory now.
The record
The Deed
Every media number that matters, what it means for you, and why. The document about your own measurement that most companies have never actually seen.
The reconciliation
The Discrepancy Audit
The places your own numbers quietly disagree with each other. The dashboard that says seven days while the deck says fourteen. The test run twice because nobody remembered the first.
The watch
The Discontinuity Ledger
A running record of every outside change that touched your numbers, so you can tell a definition move from a performance move, before you reallocate a budget over a mirage.
How it works
A system, not a services project.
Measurement Deed is a prebuilt package of agents, tuned to your own data sources. The reading is done by software, so the work takes days and not a two-quarter consulting slog. The judgment is done by a person you can name, who reviews what the system finds and stands behind the result. Low effort on your team. High on expertise.
What comes out
The Deed · the Discrepancy Audit · the Discontinuity Ledger
Human expertise
A named expert reviews everything the system surfaces, resolves what's ambiguous, and puts their name behind the Deed. The part that can't be automated, and shouldn't be.
The agent library — prebuilt, tuned to your sources
Running on a standard methodology: a prebuilt model of what good measurement looks like, and where definitions drift.
Your corpus — single-tenant, your data never leaves
Your data flows up. A certified Deed comes out. Nothing is pooled with any other company, ever.
Buy vs. build
"Couldn't our team just keep this in a doc?"
It's been possible to keep it in a doc for twenty years, and the pain is everywhere, which is the tell: the container was never the missing piece. A build might get you the container. This gets you the system, the expertise, the upkeep, and the one thing you can't build at all.
The reconstruction, not a blank page
Deriving your real definitions from messy queries, dashboards, and decks is hundreds of hours of your most senior analysts' time, aimed at work that never wins against next quarter's roadmap. It's not that they can't. It's that they never will. The agents do it in days.
A methodology for where definitions drift
The value is knowing where to look: the standard taxonomy of failure modes seen across many companies. A team building its own starts from scratch, with only its own blind spots.
A watcher with a heartbeat
Continuous monitoring against new work and platform changes is a standing commitment nobody staffs internally. Here it's just part of the system.
Neutrality you cannot build
The highest-value moment, the agency transition and the audit of vendor-reported numbers, requires an independent party. An internal build is by definition not independent, and you can't ask your current agency to document its own replaceability.
A named expert behind it
The system does the reading; a person you can point to certifies the answer. That's what makes a Deed something you can put in front of a board, not just another internal file.
Teams buy this when they can't fit the work on their roadmap, don't have the pattern expertise in-house, and can't provide the neutrality themselves - work that's been possible for years and still rarely gets done. That is this work.
The fit
Built for the moment the memory is most at risk.
This is for you if
- You've changed agencies in the last year, or you're in review now.
- You run measurement across clean rooms and a stack of retail media networks, and the numbers never quite reconcile.
- You'd struggle to name the one person who could explain why your attribution is built the way it is.
- You've felt a media number "move" and spent a week proving it wasn't real.
This is not
- Another dashboard, or another data pipe.
- A measurement or attribution model. We never re-run your math.
- A tool that pools your data with anyone else's, ever.
- A months-long services engagement that drags.
A note from the founder
Why we're building this.
I've spent twenty years on the technical side of ad tech, most recently building the partner and certification programs around clean rooms, where I got a very close look at how measurement logic actually gets made, and how easily it gets lost. The same story kept repeating: a company owns its data, works hard on its measurement, and then watches the reasoning behind it evaporate the moment a team or an agency changes.
That's why we built Measurement Deed. Not to generate anything new, and not to grade your math, but to be the system of record for what your media numbers mean: written down in your name, kept honest by software, and certified by a person who stands behind it. We're having the first conversations now, and we'd genuinely like yours.
Avi Spivack
Founder, Measurement Deed
Where to start
Send us three files. We'll send back five things that don't line up.
One QBR deck, one dashboard export, one query. That's the whole ask for a mini-audit - a one-page look at where your own numbers disagree, and a real taste of what your full Deed would hold.
Start the conversation