Turn every inspection into proof.
Synapse certificates make device condition easier to trust after the phone leaves your bench. Each one is server-issued, tamper-evident, and verifiable by anyone with the reference.
- Tamper-evident
- Publicly verifiable
- No login required
What a Synapse certificate shows.
Each certificate carries the facts a buyer needs to judge condition: model, iOS version, capacity, pass and fail counts, inspection date, validity, and the overall result.
It reflects the 50-point inspection in a single, readable record — the proof behind the grade, not a marketing claim.
- Model, iOS version, and capacity
- Pass and fail counts
- Inspection date, validity, and result
Anyone can verify it. No account needed.
Every certificate is server-issued and publicly verifiable through a scannable reference. A buyer scans it and confirms the record against Synapse directly — no login, no app to install.
Because it is tamper-evident, a certificate that has been altered will not verify. Trust comes from the source, not the seller's word.
- Scannable public reference
- Verified against Synapse, not the listing
- Tamper-evident by design
Device facts only. No personal data.
A certificate shows non-PII device facts — model, iOS, capacity, and inspection results. It never carries the prior owner's data or anything that could identify a person.
That keeps a public certificate safe to attach to any listing.
- Non-PII device facts only
- No owner data on the certificate
- Safe to share on any marketplace
A refunded purchase invalidates the certificate.
Certificates are tied to a completed, paid certified check. If that purchase is refunded, the certificate is invalidated — so a verified certificate always reflects a check that was actually paid for and completed.
That link keeps the proof honest over its full validity window.
Replace "trust me" with something verifiable
Without certified checks
- Condition described in words on a listing
- Buyers have no way to confirm a claim
- Disputes come down to your word against theirs
- Proof, if any, lives in a private spreadsheet
With Synapse
- A tamper-evident certificate per device
- Public verification through a scannable reference
- A clear record to resolve disputes
- Proof that travels with the phone
Questions, answered
Common questions about this part of Synapse.
How does a buyer verify a Synapse certificate?
Each certificate has a scannable reference that resolves to a public verification page. The buyer scans it and confirms the record against Synapse directly, with no login or app required.
Does the certificate contain any personal data?
No. A certificate shows non-PII device facts only — model, iOS version, capacity, pass and fail counts, inspection date, validity, and result. It carries no owner data, so it is safe to attach to a public listing.
What makes the certificate tamper-evident?
Certificates are server-issued and verified against Synapse rather than the listing. An altered certificate will not verify, so trust comes from the source.
What happens to a certificate after a refund?
A certificate is tied to a completed, paid certified check. If that purchase is refunded, the certificate is invalidated, so a verified certificate always reflects a check that was paid for and completed.
Where can I attach a Synapse certificate?
Anywhere you list a device. Because the certificate shows device facts only and verifies publicly, it works on marketplaces, wholesale manifests, and direct sales alike.
Certify your next phone with confidence
Subscribe your shop in minutes. Run the 50-point inspection, issue verifiable certificates, and grade every device the same way — every time.