Proof for CL-9F2A-7C31-B4E8
This verification record was cryptographically sealed and anchored to a public blockchain at issuance. The fingerprint below is the only authoritative on-chain identity for this report — anyone can re-derive it from the signed COA.
Certik Sealed Record
On-chain proof of authenticity
Verification ID
CL-9F2A-7C31-B4E8
Report hash (SHA-256)
0x8bedad7b2e4808de…-2e4
Anchor tx
0x55401394…7500
Block
#19,109,467
Sealed at (UTC)
2026-04-28 14:02:11
Issuer
certik.eth · key 0x-741…-7
Verify it yourself
$ sha256sum CL-9F2A-7C31-B4E8.pdf
8bedad7b2e4808de-2e4 ← matches on-chain record ✓
Signed COA · the source document for this anchor
Open or download the exact signed report whose SHA-256 fingerprint was anchored on-chain. Re-hash the file to confirm it matches the record above — byte-for-byte.
The trust gap
A PDF is not a proof.
Lab reports get screenshotted, edited, swapped between batches, and recycled across vendors. Buyers can't tell the real ones from the fakes — and even legitimate vendors get caught in the crossfire. The category needed a way to prove a report is the original report, for the original batch, on the original day. Without trusting the lab. Without trusting the vendor. Without trusting us.
- PDFs can be edited in seconds with off-the-shelf tools
- Reports get reused across multiple batches and vendors
- There's no way to prove when a result was actually issued
- Buyers default to skepticism — and the whole category pays for it
Our answer
Cryptographic seals. Public anchors. No middleman to trust.
At the moment a CertikLabs report is finalized, we compute a SHA-256 fingerprint of the full record — every measurement, every chromatogram, every signature — and write that fingerprint to a public blockchain. From that second forward, the report is mathematically frozen in time.
You don't have to trust Certik. You can prove it yourself.
How anchoring works
Four steps. Zero room for revision.
The same protocol that secures billions of dollars in financial assets now secures your COA.
1 · Report is finalized
Analyst signs the COA. Methods, raw data, chromatograms, and metadata are bundled into a canonical record.
2 · Record is hashed
We compute a SHA-256 fingerprint of the canonical record. A single byte changed anywhere in the report produces a completely different hash.
3 · Hash is anchored
The hash is written to a public blockchain in a Certik-signed transaction. The block timestamp becomes the official issuance time.
4 · Anyone can verify
From the verification page, anyone can re-hash the COA and compare it to the on-chain record — no Certik login, no API key, no trust required.
Anatomy of a sealed report
What gets anchored, exactly.
The on-chain record contains only the fingerprint — not the underlying data — so sensitive vendor and batch information stays private. But the fingerprint binds the entire report to a specific moment in time, on a public ledger that Certik does not control.
- SHA-256 of the canonical COA payload. The cryptographic identity of this exact report.
- Issuer key fingerprint. Proves the seal was produced by CertikLabs.
- UTC timestamp from the block. Independent proof of when the report existed.
- Methodology version pointer. Locks the report to a specific SOP revision.
Certik Sealed Record
On-chain proof of authenticity
Verification ID
CL-9F2A-7C31-B4E8
Report hash
0x9f2a7c31b4e8c0d4ae71...e102
Anchor tx
0x4d12af19...c8f8a9
Block
#19,284,773
Sealed at (UTC)
2026-04-28 14:02:11
Issuer
certik.eth · key 0xA1…7B
Verify it yourself
$ sha256sum CL-9F2A-7C31-B4E8.pdf
9f2a7c31b4e8c0d4…e102 ← matches on-chain record ✓
For partner brands
Be the brand that proves it.
Anchored reports are a category-defining edge. Show your buyers that every batch you sell is sealed by an independent lab and witnessed by a public ledger.
Beat the trust race to zero.
Unverified competitors compete on price. You compete on proof — and proof wins repeat orders.
A real moat, not a marketing claim.
Anyone can say 'third-party tested.' Only Certik partners can show a public, on-chain anchor for every batch.
Built for the next decade of regulation.
As the category formalizes, the brands with verifiable provenance from day one are the ones that survive.
The four pillars
What "verification layer" actually means.
Immutable
Once anchored, the record cannot be changed — not by Certik, not by the vendor, not by anyone. The math doesn't allow it.
Transparent
The anchor lives on a public ledger. Auditors, partners, regulators, and end users can all see the same record.
Time-stamped
Block timestamps are set by a global, decentralized network — there's no way to backdate a result after the fact.
Permanent
The anchor outlives Certik's servers, your vendor portal, and any single piece of infrastructure. The proof is forever.
FAQ
Straight answers about the chain layer.
Does this put my batch data on the blockchain?+
No. Only a SHA-256 fingerprint of the report is anchored. The underlying data — vendor, batch IDs, customer info, raw chromatograms — stays in the Certik database. The anchor proves the report exists and hasn't changed; it doesn't expose what's in it.
Which chain do you anchor to?+
We anchor to a public, high-availability EVM-compatible mainnet chosen for finality, cost, and longevity. Anchors are batched via Merkle roots, so a single on-chain transaction can seal thousands of reports without compromising the per-report proof.
How do I verify a report myself?+
Download the signed COA from the verification page, run sha256sum on the file, and compare it to the hash shown in the on-chain anchor. If they match, the report is the original. If they don't, something has been changed.
What happens if Certik goes away?+
The anchor outlives us. The verification record is on a public chain that Certik does not control. Anyone holding the original report PDF can prove it was issued by Certik on a specific date — even decades from now.
Is this just a marketing gimmick?+
No. It's a load-bearing part of the verification layer. Without an external, tamper-evident timestamp, every COA in the industry is ultimately a claim made by the lab about itself. Anchoring removes that conflict of interest.
The peptide industry just got a permanent record.
Join the partner brands building the verification layer. Every batch sealed. Every claim anchored. Every customer convinced.