NOW Available on IOS & ANdroid

The Final Word on
Multisig Signing.

Stop blind signing. OpenSig is the clinical grade verification layer for enterprise Safe Multisig Signers.
Apply for Genesis Program
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Free Pro Tier for three months the first 50 Safe Signers in Genesis Program
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PREVIEW CHANGES

REVEAL THE TRUTH.

Our local Rust EVM simulates your transaction in a zero trust environment.

Audit malicious payloads and hidden permission shifts before they reach your signature.
HARDWARE EMULATION

Zero discrepancy between screens.

Eliminate Blind Signing.

View a 1:1 digital mirror of exactly what will appear on your Ledger Nano S, X, or Plus before you commit.
Cryptographic Integrity

Verify the state,
not the provider.

We don't trust RPC node data at face value.

We verify it aginst multiple independent nodes using local Merkle Patricia Trie (MPT) proofs. If the data isn't cryptographically sound, it doesn't pass.

Independent. Isolated. Secure

Decouple your verification from your execution.

By moving transaction logic to a dedicated, offline first environment, you eliminate the risk of browser based phishing and UI injection attacks.

Step 1: Construct

Build your transaction within the Safe Web UI as usual.

Step 2: Simulate

View a human readable summary of the transaction intent.

Step 3: Verify

Validate simulation results against independent nodes.

Step 4: Preview

View a 1:1 digital mirror of your Ledger screen before you commit.

Verify, Don't Trust

No fees per transaction. No markup on gas.
No variable fee on transfers. No third-parties, period.
‍
Just the Truth.

Community

Ideal for Self-Managed Signers
0/mo
FREE FOREVER
Safe tx Hash Decoding
Reconstruct the Safe transaction hash locally to ensure the data on your screen matches exactly what you see on Safe UI
Ledger Nano Emulator
Perform physical to digital hash matching in an isolated environment to prevent blind signing errors
Bring Your Own Node
Bring your own node for total sovereignty
Simulation (via BYO Node)
Use your own Nodes to run a pre-flight of transactions and preview state changes
MPT Proofs (via BYO Nodes)
Use your own node connection to run Merkle Patricia Trie proofs for cryptographic state validation.
Offline Mode
Verify a transaction without an internet connection
Public Download Links Coming Soon

Pro

High-Value Signers & Teams
$49/ mo / seat
Everything in COMMUNITY, plus
Human-Readble Simulation (via managed Nodes)
Automatically decodes complex hexadecimal data into a clear summary of asset inflows, outflows, and contract interactions
MPT (via Independent Nodes)
Uses independent nodes to fetch eth_getProof data, cryptographically proving the blockchain state is real and unmanipulated
Zero Config Infrastructure
Access managed security that automate the entire verification process without the need to manage your nodes or technical setup
Apply to Genesis
$0 FOR 3 MONTHS (50 SLOTS AVAILABLE)

Institution

Large Funds & Security Councils
$10,000/  year / team
Everything in PRO, plus
Signed Local Audit Logs
Automatically generates a cryptographically signed "Proof of Diligence" for every transaction, ready for board level audits
Multi-Signer Oversight
Standardize a high integrity signing workflow across your entire team with shared security policies
Phone Call Support
Get a direct line to our security engineering team for custom contract decoders and priority infrastructure assistance
Request Demo
1 MONTH TRIAL OFFERED

The Genesis Program

50 SPOTS AVAILABLE

$0 THREE MONTHS PRO

We are seeking 50 Genesis Partners to help define the future of treasury integrity. Selected signers will receive three months of the Pro Tier at no cost. Help us eliminate blind signing by the auditing standard for the Safe ecosystem.
Custom API request number and rate
Direct access to the core dev team for custom protocol decoders.
Custom API request number and rate
A permanent "Partner" status in our ecosystem.
Apply for Genesis
a clarity LAYER. NOT A WALLET

SIGN WITH ABSOLTE CERTAINTY

Safe OpenSig is not a replacement for the Safe Web UI, it is the lens that makes it crystal clear for Entreprise use.
Apply to Genisis
View on Github
Safe® is a trademark of the Safe Ecosystem Foundation. Ledger®, Nano S®, Nano X®, and Nano Plus® are trademarks of Ledger SAS. Safe OpenSig is an independent verification instrument developed by Candide Labs and is not affiliated with, sponsored by, or endorsed by Safe or Ledger.
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