Timestamp GIT vs. OpenTimestamps: Which Is Right for You?

You need cryptographic proof of existence for your Git commits, and you’re weighing the options: do you install a managed GitHub App that automates the whole process, or do you run the OpenTimestamps protocol yourself? That is the real buying decision. It’s not just about whether OpenTimestamps works. It’s about how much operational work you want to own when the proof has to stand up in a legal or compliance review.

This article compares Timestamp GIT with raw OpenTimestamps across the dimensions that matter most to developers and compliance teams: ease of setup, automation, zero-knowledge handling, verification, reporting, pricing, and integration. If you’re looking for a practical timestamp git alternative to manual OpenTimestamps workflows, this comparison will help you decide.

The Landscape: Managed vs. DIY Timestamping

OpenTimestamps is an open protocol for anchoring cryptographic hashes into the Bitcoin blockchain. It is a robust, vendor-independent way to prove that a specific piece of data existed at a specific time. But the raw protocol is not a finished product. It’s a toolkit.

Timestamp GIT is a managed SaaS and GitHub App built on the OpenTimestamps protocol. It automates and hides the underlying complexity. You install the GitHub App once, connect a repository, and Timestamp GIT anchors every commit hash into Bitcoin automatically each night. There are no CLI tools to install, no OpenTimestamps commands to run, and no .ots files to manage manually.

The raw OpenTimestamps path is the hard way: you install the tooling, schedule your own stamping, retain receipts, and handle verification yourself. That may be fine for a one-off proof or a small custom project. But for ongoing protection of a codebase, the manual process becomes its own operational burden.

If you need background on how the protocol works, see What Is Cryptographic Timestamping and How Does It Protect Your Code?. If you want the specific mechanics of automatic commit timestamps, see Automate Git Commit Timestamping with a GitHub App.

Selection Criteria: What Matters for Developers and Compliance

Ease of setup

Timestamp GIT is a GitHub App. You install it once, select the repositories you want to monitor, and configure a target repository or branch for proof files. Nothing is installed on developer machines.

Raw OpenTimestamps requires manual installation and command-line usage. You also need to decide how to feed commit hashes into the system, where to store receipts, and how to repeat the process consistently.

Automation

Timestamp GIT detects new commits automatically. In Standard Mode, the GitHub App reads the HEAD commit hash from each monitored repository. In Enterprise ZK Mode, a GitHub Action runs in your CI and pushes only the commit hash to the Timestamp GIT API. Each night, Timestamp GIT batches pending hashes, builds a Merkle tree, creates OpenTimestamps proofs, and anchors the Merkle root into Bitcoin.

Raw OpenTimestamps does not automatically stamp every commit. You have to run the tooling each time you want a timestamp. Automation is possible, but you build and maintain it yourself.

Security and zero-knowledge

Timestamp GIT never reads your source code. It only works with commit hashes. In Standard Mode, the GitHub App needs at least read access to the source repository because GitHub does not expose a commit-hash-only permission. It never copies file contents. In Enterprise ZK Mode, your source code never leaves your environment. A GitHub Action pushes only the commit hash to the Timestamp GIT API, and you only need read-write access to the target proof repository.

Raw OpenTimestamps hashes data locally, so the raw data also does not need to leave your machine. But you own the full security boundary, including where hashes travel, where receipts are stored, and who can access them.

Verification and reporting

Timestamp GIT provides verification badges, a web-based cryptographic verification page, PDF certificates, CSV audit logs, and calendar heatmaps. Public status endpoints allow you to query the last anchored Bitcoin block or the total number of stamped commits.

For example, you can query the public status summary for a repository with:

curl https://timestampgit.dev/api/statusSummary/your-user/your-repo

Private repositories append an encrypted HMAC to the URL so only authorized viewers can see status data.

Raw OpenTimestamps gives you standard .ots receipt files, but verification is a manual CLI-based process. There is no built-in badge, PDF report, or audit export.

Pricing

Timestamp GIT has a free open-source tier for public repositories. Paid plans start at $49/month for Pro Agency private repos and $199/month for Enterprise ZK mode with GitHub Actions. A Docker self-hosted license is also available for air-gapped or self-managed environments.

Raw OpenTimestamps is free and open-source. The cost is your time, infrastructure, and the engineering effort required to make it reliable enough for compliance or legal evidence.

Integration

Timestamp GIT integrates directly with GitHub through the GitHub App or a GitHub Action. It fits into a normal GitHub workflow without requiring developers to change how they commit.

Raw OpenTimestamps is standalone. It does not integrate with GitHub or any other platform on its own.

Self-hosting

Timestamp GIT offers a Docker image for teams that need maximum security or air-gapped deployment. The quick start looks like this:

services:
  timestampgit:
    image: rue1401/timestampgit:prod
    ports:
      - "8080:8080"
    volumes:
      - ./data:/app/data
    restart: unless-stopped
  valkey:
    image: valkey/valkey:8
    restart: unless-stopped

docker compose pull
docker compose up -d
docker compose logs -f timestampgit

The application is then available at http://localhost:8080.

Raw OpenTimestamps is self-hosted by nature, but “self-hosted” also means “self-operated.” You are running the tooling, scheduling jobs, storing receipts, and managing verification.

Side-by-Side Comparison: Timestamp GIT vs. OpenTimestamps

Timestamp GIT is built on OpenTimestamps. The important difference is that Timestamp GIT removes the operational burden: no manual stamping, no manual receipt management, and no CLI verification workflow.

Verdict: Who Should Pick Which?

Choose Timestamp GIT if:

• You want zero setup and automatic protection for every commit.
• You need court-ready evidence without learning the OpenTimestamps protocol.
• You want team-wide adoption through GitHub without changing commit habits.
• You need badges, PDF certificates, audit logs, or a web-based verifier.
• You need private repo support with a clear compliance boundary.
• You want self-hosting with Docker but still want the managed GitHub App workflow.

Choose raw OpenTimestamps if:

• You have a custom, one-off timestamping need.
• You prefer full manual control over every part of the process.
• You are comfortable with CLI tooling and manual verification.
• You do not need reporting, badges, or team-facing verification pages.

For most developers and compliance teams, Timestamp GIT is the practical timestamp git alternative. It gives you the same Bitcoin-backed proof system as OpenTimestamps without turning your developers into timestamp operators.

If your environment requires source code to stay fully inside your infrastructure, Timestamp GIT’s Enterprise ZK Mode is especially relevant. A 12-line GitHub Action runs on your side and pushes only commit hashes. You still get the managed verification pages, badges, PDF reports, and audit logs without granting the service read access to source repositories.

FAQ

Is Timestamp GIT just a wrapper around OpenTimestamps?

Yes, Timestamp GIT uses the OpenTimestamps protocol under the hood to anchor commit hashes into the Bitcoin blockchain. However, it fully automates the process: you install the GitHub App once, and every commit to a monitored repository is automatically timestamped nightly without running any CLI commands or managing .ots files manually.

Can I use Timestamp GIT without giving access to my source code?

Absolutely. Timestamp GIT only reads the commit hash, SHA-1 or SHA-256, from your repository. In Standard Mode, the GitHub App requires read access to the repo to fetch the hash, but it never sees file contents. In Enterprise ZK Mode, a GitHub Action runs on your infrastructure and pushes only the hash to the API, so your source code never leaves your environment.

How does Timestamp GIT compare to OpenTimestamps in terms of cost?

OpenTimestamps is free and open-source, but you bear the operational cost of running the software, managing timestamps, and verifying proofs. Timestamp GIT offers a free tier for public repositories, with paid plans starting at $49/month for private repos in Pro and $199/month for Enterprise ZK. The paid plans save developer time and provide additional features like badges, PDF certificates, and audit logs.

Can I verify a Timestamp GIT proof without using their service?

Yes. Timestamp GIT provides .ots receipt files that are standard OpenTimestamps proofs. You can download the .ots file and verify it independently using any OpenTimestamps verification tool against the Bitcoin blockchain. The proof is vendor-independent and remains valid even if Timestamp GIT disappears.

Conclusion: Making the Right Choice for Your Code

Timestamp GIT and raw OpenTimestamps both answer the same question: did this code exist at this point in time? The difference is how much work you take on to ask and answer that question reliably.

Raw OpenTimestamps gives you full control. Timestamp GIT gives you the same underlying proof of existence with automatic nightly anchoring, GitHub integration, verification badges, PDF reports, and zero-knowledge hash handling. For teams that want protection without adding a second operational system, Timestamp GIT is the more practical path.

Start with the free open-source tier on public repositories, or install the GitHub App and connect a proof repository today. Timestamp GIT removes the complexity of OpenTimestamps while keeping the evidence mathematically verifiable against the Bitcoin blockchain.

Related posts

• Install a GitHub App to Timestamp Your Commits Automatically
• How Startups Can Protect Their Software IP Without Patents
• Free Open Source Git Timestamping with Timestamp GIT