How GetProofAnchor (GPA) works

Why GPA exists

Online content changes all the time: articles get edited, posts disappear, pricing and policies change. A screenshot alone is easy to challenge — it can be edited and is difficult to independently verify later, especially in disputes or formal reviews.

GetProofAnchor is built to answer one simple but critical question: “What exactly was publicly visible on this URL at that moment?”

This makes it possible to preserve online content in a way that can be reviewed by third parties — for example lawyers, regulators, or investigators — when individuals or companies need to defend themselves against harmful, misleading, or disputed online content.

How it works (simple flow)

1. Capture a public URL.
2. GPA creates a permanent Proof ID for that capture.
3. The evidence is stored in a tamper-evident format, where any change to the contents is deterministically detectable during verification.
4. Later, you (or anyone) can verify the Proof ID or an exported Evidence ZIP.

Step 1 — Capture a public URL

When you create a proof, you provide a publicly accessible URL. During capture, GPA may record:

• a full-page screenshot
• extracted text/content
• technical metadata (URL, timestamps, capture details)

This represents what the page looked like at that time.

Step 2 — Proof ID

Every capture produces a Proof ID — a permanent identifier for that record. You can share it as a link, and it always refers to the same captured evidence.

Step 3 — Tamper-evident integrity

“Tamper-evident” has a precise technical meaning: if any captured evidence is modified after creation, verification will detect the change.

This does not make disputes impossible — it ensures that modifications cannot pass unnoticed.

Step 4 — Evidence ZIP

If you need to share or preserve evidence outside your account, export an Evidence ZIP. It is a portable evidence package that bundles captured artifacts together with integrity data, so the contents can be verified later.

An Evidence ZIP can be safely archived, attached to a case file, or submitted for external review. Using verification, you can demonstrate that the ZIP and its contents are original and have not been modified since capture.

Step 5 — Verification

Verification checks whether evidence still matches what was originally captured. It determines whether the evidence has remained unchanged since creation.

• a Proof ID (online verification)
• an Evidence ZIP (online or offline verification)

Evidence ZIP verification is not dependent on the GetProofAnchor platform. Because the ZIP includes a cryptographic manifest (SHA-256 hashes), its integrity can be verified later using independent tools or workflows — even without access to the original URL or a GPA account.

Any modification to the Evidence ZIP will cause verification to fail. This includes changes such as editing extracted text, modifying a screenshot, replacing files, recompressing content, or altering the ZIP structure.

Results are intentionally clear and deterministic: Match (the evidence is identical to the original record) or Modified (the evidence differs from the original capture).

What GPA does not do

• GPA does not assess or judge the truthfulness of content.
• GPA does not make legal decisions or replace legal counsel.
• GPA does not decide admissibility — that is determined by authorities and jurisdiction.

GPA’s role is precise and technical: it provides a verifiable, tamper-evident record of what was publicly visible at a specific point in time. How that record is used depends on legal context, procedure, and jurisdiction.