Automate digital content certification via the API

Step 1 — Create an API key

Log in, go to Developer → API keys, and click Create API key. Copy the key — it is shown only once.

Step 2 — Create a certificate

Send a POST request with your URL:

curl -X POST https://secure.instantproof.legal/api/v1/certificates \
  -H "Authorization: Bearer ip_live_xxxxxxxxxxxxxxxx" \
  -H "Content-Type: application/json" \
  -d '{"url": "https://example.com/page-to-certify"}'

Response 201 Created:

{
  "certificateId": "abc123…",
  "recordingId":   "def456…",
  "url":           "https://example.com/page-to-certify",
  "finalUrl":      "https://example.com/page-to-certify",
  "status":        "ready",
  "links": {
    "self":        "/api/v1/certificates/def456…",
    "certificate": "/api/v1/certificates/def456…/download"
  }
}

Step 3 — Download the certificate PDF

Follow the links.certificate URL with your API key. The server returns a 302 redirect to a pre-signed download URL:

curl -L \
  -H "Authorization: Bearer ip_live_xxxxxxxxxxxxxxxx" \
  "https://secure.instantproof.legal/api/v1/certificates/def456…/download" \
  -o certificate.pdf

The downloaded PDF is the same signed certificate PDF that the web UI produces, verifiable at /certificate.html.

All API requests must include:

Authorization: Bearer ip_live_xxxxxxxxxxxxxxxx

Keys are created at Settings → Developer → API keys. A key authenticates as your account — treat it like a password. Revoke immediately if leaked.

Keys are prefixed ip_live_ for live accounts. The prefix helps you identify them in code or environment files.

Python

import requests

API_KEY = "ip_live_xxxxxxxxxxxxxxxx"
BASE    = "https://secure.instantproof.legal"

# Create a certificate
resp = requests.post(
    f"{BASE}/api/v1/certificates",
    json={"url": "https://example.com"},
    headers={"Authorization": f"Bearer {API_KEY}"},
)
resp.raise_for_status()
data = resp.json()
recording_id = data["recordingId"]

# Download the PDF
pdf = requests.get(
    f"{BASE}/api/v1/certificates/{recording_id}/download",
    headers={"Authorization": f"Bearer {API_KEY}"},
    allow_redirects=True,
)
pdf.raise_for_status()
with open("certificate.pdf", "wb") as f:
    f.write(pdf.content)
print(f"Certificate saved ({len(pdf.content)} bytes)")

Node.js (fetch)

const API_KEY = process.env.INSTANTPROOF_API_KEY;
const BASE    = "https://secure.instantproof.legal";

// Create a certificate
const res = await fetch(`${BASE}/api/v1/certificates`, {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${API_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({ url: "https://example.com" }),
});
if (!res.ok) throw new Error(`${res.status} ${await res.text()}`);
const { recordingId, links } = await res.json();

// Download the PDF
const pdf = await fetch(`${BASE}${links.certificate}`, {
  headers: { "Authorization": `Bearer ${API_KEY}` },
  redirect: "follow",
});
const buffer = Buffer.from(await pdf.arrayBuffer());
require("fs").writeFileSync("certificate.pdf", buffer);

Shell (curl)

# Set your key
export INSTANTPROOF_API_KEY="ip_live_xxxxxxxxxxxxxxxx"

# Create
CERT=$(curl -sf -X POST https://secure.instantproof.legal/api/v1/certificates \
  -H "Authorization: Bearer $INSTANTPROOF_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"url":"https://example.com"}')

echo "$CERT" | python3 -m json.tool

RECORDING_ID=$(echo "$CERT" | python3 -c "import sys,json; print(json.load(sys.stdin)['recordingId'])")

# Download
curl -sfL \
  -H "Authorization: Bearer $INSTANTPROOF_API_KEY" \
  "https://secure.instantproof.legal/api/v1/certificates/$RECORDING_ID/download" \
  -o certificate.pdf

ls -lh certificate.pdf