Peerseal.Portable human trust for every platform.
Camera manufacturers and Big Tech coalitions already sign pixels at capture. Peerseal adds the part their standards stack does not cover: a portable Trust Score built from real human attestations — verified purchases, eyewitness events, peer vouches, and identity-verified ownership that travel with you across platforms.
- Built on
- C2PA · W3C VC · DID:web
- Score range
- 0 — 100
- Portable
- cross-platform · open
02 — The missing layer
Cameras sign pixels. They don’t vouch for the person behind them.
The C2PA stack proved the file was not edited. It did not prove a single thing about the human who pressed the shutter, posted the listing, or filed the review. That gap is where fraud lives — and where every platform keeps reinventing its own patch.
Existing stack · pixels ⟶ Peerseal adds · the human
Peerseal sits beside the existing stack, not on top of it. A signed asset arrives; Peerseal asks: who published it, were there witnesses, was the receipt verified, did an identity proof support the claim. Every attestation strengthens the graph; every integration makes scores more portable. The network gets smarter the more it is used.
03 — How it works
Five signal types. One portable score.
Every Peerseal score is a public composite over five attestation types. Tap a badge to inspect what it actually attests to.
★ trusted subject ● witnesses
A live recording attested by people who were actually there.
clip · sunrise over Glacier Bay · 42 s
- m.tanaka @ NOAAco-present on vesselAug 2, 06:14 AKDT
- r.okafor @ NPSGPS anchor matchesAug 2, 06:15 AKDT
- k.iversenindependent captureAug 2, 06:18 AKDT
Sample scores
Example posts scored by Peerseal.
Three published posts spanning the engine’s low, mid, and high bands. Each shows the trust score and the badges it earned — the same pills the engine renders on /posts/[id].
Verified purchase
score100/ 100+55 receipt · +40 eyewitness · +25 identity_verified · capped at 100
Eyewitness vouch
score65/ 100+40 eyewitness · +25 identity_verified
Identity confirmed
score80/ 100+55 receipt · +25 identity_verified
04 — Use cases
Peerseal goes where signed pixels aren’t enough.
- 01
Marketplaces
“Is the seller who they say they are?”
Verify listings on submit; reject duplicates, off-platform laundering, vanity-stall operators.
- 02
Dating apps
“Are you talking to a real person?”
ID-verified onboarding, continuous authenticity signals, ban-evader resistance.
- 03
Brands & reviews
“Did a real customer actually buy this?”
Receipt-bound reviews, dispute surface for verified listings, paid-fraud detection.
- 04
Journalism
“Can my editor verify the source?”
Witness attestations on field captures, source-integrity trails, dispute tracking.
- 05
Recruiting
“Did they actually work there?”
Cross-reference vouches from former teammates without exposing the whole peer set.
05 — Integrate
Three endpoints. No SDK lock-in. No custody of your users.
Peerseal exposes an attestation-lookup API. You pass a handle; you get a scored bundle back — the same bundle that travels with them to every other platform that asks.
- No new accounts for your users — they keep one portable identity.
- Rate-limit friendly — designed for marketplace & auth flows.
- Open attestations: anyone can verify, anyone can contest.
// 1. Resolve a handle to its attestations
const seal = await peerseal.lookup('@ariel.contributor');
// 2. Use the composite score in your flow
if (seal.score < 40) return reject(seat, 'low trust');
// 3. Or inspect a single signal type
const eyewitness = await peerseal.attestations({
handle: '@ariel.contributor',
type: 'co_witness',
since: '2026-01-01',
});
// → { attestations: 4, score_contribution: 31 }
// 4. Surface a badge on the UI
<PeersealBadge handle="@ariel.contributor" />06 — In closing
Peerseal doesn’t try to detect AI. It answers the harder question open standards can’t: should you trust the person behind the content?
Early-access partners only — marketplaces, dating apps, journalism, brands. One short email is enough.