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“OffchainLabs/nitro-contracts is open source on GitHub” | BLUFF

Cases / GitHub / The code is public on GitHub

SupportedRevision 1, 2026-10-12 16:44:42 UTC

“OffchainLabs/nitro-contracts is open source on GitHub”

No public source link was given.github.com/offchainlabs/nitro-contracts

OffchainLabs/nitro-contracts is a public repository on GitHub. That shows the code is published, not that it's what's deployed.

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Finding
What we could verify
What remains unproven
Other claims on the source
Evidence
How this was checked
Revision

Finding

Supported. Independent receipts back the narrow claim. That's all the label says: nothing about safety, intent or anything beyond the claim.

Claim: “OffchainLabs/nitro-contracts is open source on GitHub” → looking for a public repository at the address → a public repository.

AI summary

The OffchainLabs/nitro-contracts repository is public on GitHub, so the code is published and anyone can read it. This does not show that the published code is what is actually deployed or running. GitHub could not identify the repository's licence, so this check does not settle whether the code meets a particular definition of open source.

OffchainLabs/nitro-contracts is a public repository on GitHub, read directly from GitHub's API on 2026-10-12. R-001
The default branch, develop, was at commit ff6334e7bfe6 dated 2026-10-02, and the latest release listed is v3.2.0. R-001
GitHub reported the licence as NOASSERTION, meaning it couldn't identify which licence applies. R-001

Whether this code is what's actually deployed or running.
Whether the project works as described, or whether the code is secure.
Which licence governs the code, since GitHub couldn't identify it.
Whether recent commits or releases mean a working product exists.

Don't take a public GitHub repository as evidence that the deployed contracts match this code or that the code is free of problems.

Written by claude-opus-5-5 from the receipts above. The label comes from BLUFF's rules, not from the model, and the summary was checked against them before it was shown.

What we could verify

OffchainLabs/nitro-contracts is a public repository. Default branch develop was at commit ff6334e7bfe6 (2026-10-02T08:22:18Z); a licence GitHub couldn't identify; latest release v3.2.0. Read from GitHub's API at 2026-10-12T16:44:27.001Z. R-001

What remains unproven

That this code is what's deployed or running
That the project works, or that the code is safe
That stars, a README or recent commits mean the product exists

Other claims on the source

An AI read the captured page and picked out these testable claims. Each quote matched the page word for word. None of them has been checked yet.

“This is the package with the smart contract code that powers Arbitrum Nitro.”
Testable by: Check the repository contents and compare compiled bytecode against verified Arbitrum core contracts on Ethereum.
“For the deployed addresses of these contracts for Arbitrum chains see [https://docs.arbitrum.io/for-devs/dev-tools-and-resources/chain-info#core-contracts](https://docs.arbitrum.io/for-devs/dev-tools-and-resources/chain-info#core-contracts)”
Testable by: Read the listed core contract addresses from the docs page and read bytecode at those addresses onchain.
“Compile these contracts locally by running”
Testable by: Check the repository for a package.json with a build script and CI build status.
“Nitro is currently licensed under a [Business Source License](./LICENSE.md)”
Testable by: Check LICENSE.md in the repository.
“The AEP allows for the permissionless deployment in the aforementioned fashion provided that 10% of net revenue is contributed back to the Arbitrum community in accordance with the requirements of the AEP.”
Testable by: Check the linked AEP terms PDF on docs.arbitrum.foundation.

Evidence

Each receipt is a hashed copy of what a source answered, kept unchanged. A correction arrives as a new receipt in a new revision.

R-001
Level A, independently observed
GitHub repository OffchainLabs/nitro-contracts
Public repository; default branch develop at ff6334e7bfe6, licence NOASSERTION.
Source
Robinhood Chain RPC, read-only
Observed
2026-10-12 16:44:27 UTC
Payload hash
sha256 fd99b00cbe…138498
Can't show: A public repository shows code was published, not that it's deployed or running.

Evidence map

Evidence map for: OffchainLabs/nitro-contracts is open source on GitHub. Evidence map for the claim about https://github.com/offchainlabs/nitro-contracts. 1 receipt observed. Finding: Supported. Use Tab to move between items and Enter for details. Focus the map and use the arrow keys to pan, plus and minus to zoom, 0 to reset.

ClaimRepositoryReceiptSourceFindingEdges: claims, read from, corroborates

How this was checked

The repository through GitHub's official API: visibility, default branch, latest commit, licence and latest release
For a commit link, whether that exact commit exists in the repository

Pages are fetched by BLUFF's own reader, which respects robots.txt and never logs in. GitHub is read through its official API. Labels come from rules in the methodology, not from a model.

Watch how we checked it

Revision

Current: Revision 1, initial investigation, 2026-10-12 16:44:42 UTC
Archive hash: sha256 99252a9e4891…df3c6053
Earlier revisions: None. A recheck would add a new revision and keep this one.

See every revision and what changed

An evidence finding is not an endorsement, investment advice, or an assessment of investment safety. A missing receipt doesn't mean a claim is fake. BLUFF is not affiliated with Robinhood.