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GET
/
v1
/
attestations
/
{id}
/
qr
curl -H "Authorization: Bearer $API_KEY" \
  "https://api.truthlocks.com/v1/attestations/550e8400-e29b-41d4-a716-446655440000/qr?size=512" \
  --output attestation-qr.png
Generate a QR code image for an attestation. The QR code encodes the full verification URL that anyone can scan to verify the attestation independently.

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Use cases

  • Print on certificates, badges, and documents
  • Embed in emails or digital proof pages
  • Display on screens for instant mobile verification

​
Parameters

​
id
string
required
The UUID of the attestation
​
size
integer
default:"256"
Image size in pixels (128 to 1024). The QR code is always square.

​
Response

Returns a PNG image with Content-Type: image/png. The response includes aggressive cache headers (Cache-Control: public, max-age=31536000, immutable) since QR codes for a given attestation never change.

​
Encoded URL format

The QR code encodes: 
https://verify.truthlocks.com/proof/{attestation_id}
Anyone who scans this QR code will be taken directly to the verification page for this attestation. 
curl -H "Authorization: Bearer $API_KEY" \
  "https://api.truthlocks.com/v1/attestations/550e8400-e29b-41d4-a716-446655440000/qr?size=512" \
  --output attestation-qr.png