Willow, in plain English.
A friends-and-family explainer. No jargon.
The problem.
When you open your bank's app, a stock app, a fitness tracker — the data on your screen comes from somewhere. A company runs a database. Software or an employee put numbers into it. You have no way to know if those numbers are real, or if they were the same yesterday, or if anyone has touched them in between.
For most things, that's fine. You trust the company. But sometimes the stakes are higher — an audit, a financial record, an AI agent acting on your behalf, something someone might want to dispute years from now. In those cases, "trust the company" isn't enough.
A seal you can check.
Picture the foil seal under the cap of an aspirin bottle. The seal doesn't make the medicine inside any safer — but if it's broken when you open it, you know something happened that shouldn't have.
Willow puts a similar seal on data. Every piece of data Willow gives you comes with a tiny mathematical seal attached. Anyone can check the seal — your phone, a friend, an AI agent — and the math will tell them, with certainty, whether anything has changed since the data left the source.
If the seal is intact, the data is genuine. If it's broken, you know not to trust it. No person or company in the middle whose word you have to take.
What Willow actually does.
Three things. All three come with the seal.
- 01
It stores records.
Like rows in a spreadsheet — a list of customers, scores, sensor readings, anything. Stored with the seal, so anyone reading them later can prove they haven't been edited or fabricated.
- 02
It stores files.
Photos, PDFs, videos. Same idea: every file comes with a seal proving it's the same file that was uploaded, byte for byte.
- 03
It watches blockchains.
Blockchains are the public record-books behind crypto — Bitcoin, Ethereum, and others. Willow reads what happens on them and turns it into something apps can use, with a seal proving every line came from the real chain.
Why it matters now.
AI agents.
When an AI agent makes a decision based on data — a price, a balance, a record of what someone said — there should be a way to check it didn't get fooled. Willow gives the agent a seal it can verify before it acts.
Deepfakes and AI-generated content.
As fakes get cheaper, "where did this come from, and has it been changed?" becomes a question we'll all need to answer.
Audits and compliance.
Today auditors ask for data and trust the company to give them the right data. Sealed data can be checked years later, by anyone, without needing the company to vouch for it.
Journalism and evidence.
A photo, a document, a record of a transaction — sealed at the moment of capture, provably unchanged ever after.