Data Accounting Infrastructure.
Trust that travels with your data.
Aqua builds verification into the data itself. Not into the platforms that hold it.
Documents, transactions, and AI actions carry their own proof,
wherever they go, whoever needs to check.
Find your trust gap.
“My AI agent says it did the task.I leave the interface and verify it manually anyway.”
SOLVE IT WITH AquaAgents“Anyone can now alter a PDF without leaving a trace.Including the one I'll have to defend in court.”
SOLVE IT WITH AquaFire“We'll have to show exactly what our AI agents did,and our internal logs won't be enough.”
SOLVE IT WITH AquaAgents“We can verify our direct suppliers.Further up the chain, verification breaks down.”
SOLVE IT WITH AquaNode“Our most important files live on someone else's servers.If the provider locks us out, we can't reach our records.”
SOLVE IT WITH AquaNode“We secured the rights to our training data.But we cannot prove which files trained the model.”
SOLVE IT WITH AquaAgentsYou don't have to figure this out alone.
Different scenarios. Same gap.
Proof doesn't travel with the data.
What accounting did for money, Aqua does for data.
500 years ago, double-entry bookkeeping made financial records verifiable.
Aqua brings the same logic to digital data.
Every document, dataset, and AI action gets its own unforgeable life story:
Who created it
How it changed
Who signed it
When it happened
The history travels with the data itself.
Not locked inside the system it came from.
So how does this work?
Follow a contract, an invoice, or an AI agent's decision as Aqua makes each step provable:
Created
How do you know it's still the original?
Aqua gives the record a fingerprint: a code that changes whenever the record does. Whoever holds the record can confirm it still matches.
Changed
Can someone rewrite an earlier version?
Each fingerprint carries the one before it, so any edit to an earlier version breaks the line of proof at that exact step.
Signed
Did a person or an AI agent really approve it?
It’s signed with a key only the person or agent controls, so no one else can sign in their name. Unlike a handwritten signature, it can’t be copied onto another document.
Verified
Do you need the original platform to check it?
No platform to log into. No public ledger. No vendor to ask.
The record carries its own proof, even offline.
The AquaTree: a document's life as one traceable lineage. Created, then Changed, then Signed, then Verified. Each version is linked to the one before it, so the whole history can be checked from the file itself, every version traced back to its origin.
Doesn't this already exist?
Existing tools solve pieces of the problem. But the proof still lives outside the record.
Aqua: one layer that unifies all four, while keeping verification independent of any single system.
Aqua changes the center of trust.
No central authority. No global ledger. No coin. Just verifiable math, bound to the record.
That enables two things:
Private verification
Prove a record's authenticity to a partner or auditor without handing over the data itself.
Offline verification
Verify the record locally, with no network connection required. Today, and long into the future.
Go one layer deeper.
A five-minute walkthrough from the core idea to what Aqua makes possible.
Why now.
Three shifts are making independent proof impossible to ignore.
Record integrity
May 2024
Record integrity
A signed record is not the same as a provable record.
Under eIDAS 2.0, data records in qualified electronic ledgers are legally presumed to be intact and in the correct chronological order.1
Aqua records preserve who signed, what changed, and in which order, so authorised parties can independently verify their history.
$2bn+
in SEC penalties since December 2021 for failures to maintain and preserve required electronic communications.2
1 eIDAS 2.0, Regulation (EU) 2024/1183 2 U.S. SEC recordkeeping enforcement, 2021–2024
Data portability
Sep 2025
Data portability
Provider independence requires portable proof.
The UK competition authority found that technical and commercial barriers make it difficult for cloud customers to switch providers.3 Since September 2025, the EU Data Act requires providers to remove obstacles to switching.
Your records can leave a platform. The evidence that makes them verifiable often cannot. Aqua binds that evidence to each record, so it travels with the data.
Jan 2027
the last cost barrier falls: under the Data Act, charges for moving your data out of a cloud are phased out entirely.3
3 EU Data Act, Regulation (EU) 2023/2854 · UK CMA cloud services market investigation
AI liability
9 Dec 2026
Next
AI liability
If your AI causes damage, you must be able to show what it did.
From 9 December 2026, updated EU product liability rules apply to newly placed products, including software and AI systems.4 If a company fails to disclose relevant evidence ordered by a court, the product’s defectiveness can be presumed.
With Aqua, governed AI actions leave signed, verifiable records. When accountability is challenged, the evidence is already there.
4 in 5
organisations lack mature governance for autonomous AI agents.5
4 EU Product Liability Directive 2024/2853 5 Deloitte, State of AI in the Enterprise, 2026
The trust infrastructure the digital economy never had.
One protocol underneath. Three products built on top.
AquaAgents
Govern what your AI agents may do.Independently verify what they did.
Learn moreAquaFire
Sign documents, issue credentials, prove identity.The evidence travels with every record.
Learn moreAquaNode
Give your data a bank account.Verify every interaction.
Learn moreAqua works with your existing systems
Building with Aqua.
How our partners are bringing Aqua into real-world use.
David Thomson Founder, Tesseract Stakes & the Pathways Project tesseractstakes.com ↗ “Pathways is our architecture for user-owned AI workflows. Aqua is embedded at its core, providing the verifiable provenance foundation that keeps origin, changes, and context connected as those workflows evolve. That foundation has helped enable 33 early-stage technology collaborations across medicine, cooperative data centres, legal instrumentation, benchmark integrity, global standards, and more.”
Gawain MacMillan Co-Founder, iQ Digital · US mortgage & finance iqdigi.us ↗ “One of the biggest unresolved problems in the US mortgage and finance industry is how records move across organisations and systems involving AI, automation, and humans-in-the-loop. New regulatory requirements demand reliable evidence that legacy schemas, disconnected workflows, and traditional logging were never designed to provide.
Aqua is the first data accounting solution to address this at the infrastructure level, keeping records verifiable wherever they go. We believe it marks the shift from attestation to mathematically verifiable evidence and are working to bring it into the US mortgage and finance industries as an open, portable protocol for the emerging agentic economy.”
Aqua is part of the emerging standards for verifying AI systems.
Associate member
Proof of Control
inblock.io is an associate member of Proof of Control, the Advanced AI Society's initiative building an open standard for verifying AI systems.
advancedaisociety.orgUnder evaluation
EU AI regulatory sandbox
Through Proof of Control, Aqua is under evaluation for EUSAiR, an EU initiative that evaluates AI systems against upcoming regulatory requirements in real-world environments. Results are expected in late September 2026.
eusair-project.euOpen development since 2021 Going open source (Apache 2.0)
Trust that travels with your data.
So anyone you share a record with can verify what happened for themselves.