Send a URL, get back a signed, blockchain-timestamped, self-verifiable evidence package — Bitcoin OpenTimestamps, C2PA Content Credentials, RSA-4096 signing and an ISO/IEC 27037 chain of custody. Built for brand protection, eDiscovery and compliance archiving.
Early-access keys are issued by email as the beta opens.
curl -X POST https://api.getproofsnap.com/v1/captures \
-H "Authorization: Bearer ps_live_…" \
-H "Content-Type: application/json" \
-d '{ "url": "https://example.com/listing" }'{
"capture_id": "cap_a1b2c3d4e5f6g7h8",
"status": "completed",
"package_url": "https://… (24h presigned ZIP)",
"verification_url": "https://verify.getproofsnap.com/cap_…",
"manifest_hash": "sha256:…",
"c2pa": { "included": true }
}Every package carries the three things courts ask for — integrity, an independent timestamp and chain of custody — plus content provenance against deepfake challenges.
Each capture's manifest hash is anchored to the Bitcoin blockchain — a tamper-evident timestamp that needs no trust in us.
Every screenshot is signed with C2PA Content Credentials — the open content-provenance standard (ISO 22144) — to withstand deepfake challenges.
A fresh ephemeral keypair signs each manifest and is discarded; the public key ships in the ZIP. Anyone can re-verify a package — no API key required.
Capture one URL or up to 50 in a single request. Each becomes its own signed package and fires its own completion webhook.
Headless Chromium renders the full page (desktop or mobile), auto-expands collapsed comments and replies, and ships a single-file MHTML snapshot for eDiscovery review platforms.
HMAC-SHA256-signed capture.completed callbacks with replay protection. Server-side SSRF blocking, TLS-only and per-key authentication.
/v1/capturesCapture a single URL.
/v1/captures/batchCapture 2–50 URLs in one request.
/v1/captures/{id}Status and a 24h presigned ZIP URL.
/v1/verifyVerify any evidence ZIP — no key required.
A self-contained, self-verifiable evidence ZIP:
The same evidence format used by the ProofSnap Chrome extension.
Every package ships with an Evidence Pack PDF describing a reproducible, documented capture process under U.S. Federal Rule of Evidence 901(b)(9) — a process or system that produces an accurate result. Add your custodian details and it pre-fills a FRE 902(14) self-authentication declaration for the qualified person to sign.
Evidence Pack templates are in beta and not a substitute for legal advice; final admissibility is at the court's discretion.
Metered and usage-based. Bitcoin OpenTimestamps and C2PA are included on every plan.
On-demand forensic capture services charge from $199 per website. ProofSnap starts at $0.25 per capture — the same court-admissible evidence, as an API call.
$0/mo
Pay-as-you-go sandbox & production.
$1.50 per capture
$99/mo
200 captures included.
$0.60 per overage capture
$499/mo
2,000 captures included.
$0.40 per overage capture
Need 10,000+ captures, a custom contract or a DPA? Talk to us.
Preserve counterfeit listings, trademark abuse and copycat sites the moment your scanners find them — before the seller deletes the evidence.
Capture public web and social content straight into your case workflow, with MHTML and an FRE 901(b)(9) process record.
Tamper-evident, hash-anchored snapshots of the pages you're obligated to preserve, with a verifiable chain of custody.
It's a REST API that turns any URL into a court-admissible evidence package: a full-page screenshot, the page HTML and a single-file MHTML snapshot, sealed with an RSA-4096 signed manifest, C2PA Content Credentials, a Bitcoin OpenTimestamps proof and an ISO/IEC 27037 chain of custody.
A plain screenshot is easily challenged — it carries no verifiable timestamp or integrity proof. Web evidence becomes admissible when it's captured by a documented process and sealed with a cryptographic hash, an independent timestamp and a verifiable chain of custody. ProofSnap produces all three.
A screenshot API returns an image. ProofSnap returns a signed, blockchain-timestamped, self-verifiable evidence package designed to prove a page looked a certain way at a certain time.
A U.S. Federal Rule of Evidence that lets electronic data be self-authenticated through a hash-based digital identification process certified by a qualified person. ProofSnap pre-fills that custodian declaration in its Evidence Pack.
Send the ZIP to the public /v1/verify endpoint, or check it yourself: validate the RSA-4096 manifest signature against the bundled public key and confirm the Bitcoin OpenTimestamps proof. No API key is required.
The public beta launches in one week. Request an early-access key by email and we'll reach out as it goes live.
The public beta opens in one week. Request an early-access key and start capturing court-admissible web evidence by API.
Request early accessor email support@getproofsnap.com