For financial services

Block the bad action. Prove every good one.

Your AI agents approve, pay, and trade on their own. Obsign stops an out-of-policy action before it executes — then seals court-grade, tamper-proof evidence of the decision. When a regulator says “prove it,” you can.

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// enforcement and evidence are the same event

Evidence recordseq #4829

action: wire_transfer · $4,800,000
decision: DENY — over policy limit
sealed: 2026·06·23 14:02:11.038Z
hash: 7324363792e4c0bc…566207c8
signature: ed25519 ✓ verified

edit one byte → verification fails. anyone can check it offline. Verified

01 — The exposure

The moment your agent acts, you own what it did.

An autonomous agent can wire funds, approve a loan, or place a trade in milliseconds — and your firm carries the liability. Your audit logs? Editable, deletable, and written by the same system you're trying to vouch for. When an examiner says “show me what your agent did, and prove it,” a log you could have changed isn't an answer. It's a finding.

$390M+

in fines the SEC collected in a single 2024 sweep over records firms couldn't preserve. Recordkeeping isn't paperwork — it's the penalty.

02 — What you get

Stop the bad action. Keep proof of the good ones.

Blocked before it happens

Out-of-policy actions are stopped inline, before any money moves — not flagged in a report the next morning. Prevention, not forensics.

Proof that holds up

Every decision is sealed into evidence your own auditor can independently verify — court-grade and tamper-proof, not a log you could have edited.

Even you can't fake it

The record is independent and non-repudiable. No one — not even your own operators — can rewrite history after the fact. That's what makes it defensible.

03 — Why a log won't save you

An audit log is a promise. Obsign is proof.

Your audit logs today

✕ Editable and deletable by whoever runs the system
✕ “Trust us, it's accurate” — impossible to prove to a third party
✕ Written after the fact, detached from the decision
✕ Often holds customer data in the clear

Obsign

✓ Mathematically tamper-evident — any edit is detectable
✓ Verifiable by anyone, offline, with just a public key
✓ Sealed at the instant of the decision it enforced
✓ Sensitive inputs are fingerprinted, never stored

04 — How it works

Drop it in front of your agents. Nothing else changes.

Obsign sits at the boundary where your agents call tools. Every action flows through three steps — automatically, in a single pass.

STEP 01

Intercept

Every agent action is caught at the boundary before it reaches the tool that would execute it.

STEP 02

Decide

Your policy is evaluated in microseconds — allow, deny, or redact — before the action runs. Denials are blocked and cited.

STEP 03

Seal

The decision is sealed into an independent, tamper-proof record — a court-ready bundle anyone can verify.

// adds microseconds, not friction · stores no sensitive data, only fingerprints · no change to how your agents work

05 — Built to the standard

You're not taking our word for it. You're meeting the SEC's own standard for tamper-evident records.

In 2022 the SEC amended Rule 17a-4 to explicitly accept a tamper-evident audit trail in place of locked-down storage. Obsign is built to that standard — and to the supervision and logging rules coming for AI.

SEC 17a-4Designed to the SEC's tamper-evident audit-trail standard.

FINRA 3110Supervise, evidence the review, block out-of-bounds actions.

EU AI Act 12Automatic logging for high-risk AI — made tamper-evident.

FRE 902Designed to self-authenticate as evidence in US courts.

Tamper-evident

If your agents move money, you'll be asked to prove it.

A working product you can pilot today — not a roadmap. We're partnering with a small number of financial firms putting agents into real workflows. Let's talk.

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