Content Credentials in action
Real signed files. Verify them yourself.
Explore Encypher text, images, audio, and video with C2PA Content Credentials built in. Download a sample and verify its provenance in your browser.
Free verification. No account required. Your uploads stay out of public galleries.
79
formats for signing and verification
5
signed samples to explore
$0
to verify any of them
Text
A signed paragraph of our own copy
Keep your copy readable and its provenance verifiable. Invisible C2PA markers carry the credential within the text. Download the original file to preserve those markers and verify its origin.
Download the signed file20,853 bytes, text/plain. Free, no account.
| Check | Recorded at signing | Verify to see live results |
|---|---|---|
| Verdict | valid | - |
| Integrity | not reported | - |
| Signer trust | trusted | - |
| Signer | not reported | - |
| Declared spec version | 2.4 | - |
| Validated under | 2.4 | - |
| RFC 3161 timestamp | not reported | - |
| Watermark signal | not reported | - |
| Ingredients | none | - |
| Conformance gate | not reported / not reported | - |
Recorded verification: 2026-09-07T15:37:38.741Z from POST /api/v1/public/verify.
- Format support
- text/plain: signing supported, verification supported. Signable under C2PA 2.4. Outside the current C2PA Conformance Program coverage.
- Signing details
- Signed 2026-09-07T15:37:38.742Z through POST /api/v1/sign with action c2pa.created, no declared ingredients. Signed with C2PA Content Credentials, without a separate watermark. SHA-256 of the published bytes: 42e328461b2181b63c0f2e891d4c8af753351cbfd71899e9460920a1ebef90ab
Image
A signed Encypher brand card
Put verifiable provenance inside your images. This Encypher brand card carries embedded C2PA Content Credentials. Inspect the signer, file integrity, and timestamp in the verifier.
Download the signed file38,818 bytes, image/jpeg. Free, no account.
| Check | Recorded at signing | Verify to see live results |
|---|---|---|
| Verdict | valid | - |
| Integrity | not reported | - |
| Signer trust | trusted | - |
| Signer | Encypher | - |
| Declared spec version | 2.4 | - |
| Validated under | 2.4 | - |
| RFC 3161 timestamp | yes | - |
| Watermark signal | not reported | - |
| Ingredients | encypher-card.jpg (parentOf) | - |
| Conformance gate | not reported / not reported | - |
Recorded verification: 2026-09-07T15:37:46.233Z from POST /api/v1/verify/image.
- Format support
- image/jpeg: signing supported, verification supported. Signable under C2PA 2.2 and 2.4. Covered by the formal C2PA 2.2 Conformance Program pass.
- Signing details
- Signed 2026-09-07T15:37:46.287Z through POST /api/v1/sign/media with action c2pa.opened, 1 declared ingredient. Signed with C2PA Content Credentials, without a separate watermark. SHA-256 of the published bytes: 9cf420cef39395cb4776653b353556e92b065caaa6c8881553735898605ef398
Audio
A signed eight-second audio clip
Give your audio a verifiable origin. This eight-second Encypher product clip carries C2PA Content Credentials embedded in the audio file. Play it, download it, and verify its signer.
Download the signed file1,419,620 bytes, audio/wav. Free, no account.
| Check | Recorded at signing | Verify to see live results |
|---|---|---|
| Verdict | valid | - |
| Integrity | not reported | - |
| Signer trust | trusted | - |
| Signer | Encypher | - |
| Declared spec version | 2.4 | - |
| Validated under | 2.4 | - |
| RFC 3161 timestamp | yes | - |
| Watermark signal | not reported | - |
| Ingredients | none | - |
| Conformance gate | not reported / not reported | - |
Recorded verification: 2026-09-07T15:03:28.925Z from POST /api/v1/verify/audio.
- Format support
- audio/wav: signing supported, verification supported. Signable under C2PA 2.2 and 2.4. Covered by the formal C2PA 2.2 Conformance Program pass.
- Signing details
- Signed 2026-09-07T15:03:28.926Z through POST /api/v1/sign/media with action c2pa.opened, no declared ingredients. Signed with C2PA Content Credentials, without a separate watermark. SHA-256 of the published bytes: a18c5d8f8b647eb098e606cd9a5c832791f28e0663ab1f9d81f8e4a84a1f7343
Video
A signed six-second video clip
Deliver video with provenance built in. This six-second Encypher product clip carries embedded C2PA Content Credentials. Watch it here, then verify the signed file.
Download the signed file44,029 bytes, video/mp4. Free, no account.
| Check | Recorded at signing | Verify to see live results |
|---|---|---|
| Verdict | valid | - |
| Integrity | not reported | - |
| Signer trust | trusted | - |
| Signer | Encypher | - |
| Declared spec version | 2.4 | - |
| Validated under | 2.4 | - |
| RFC 3161 timestamp | yes | - |
| Watermark signal | not reported | - |
| Ingredients | encypher-product-clip.mp4 (parentOf) | - |
| Conformance gate | not reported / not reported | - |
Recorded verification: 2026-09-07T15:03:33.340Z from POST /api/v1/verify/video.
- Format support
- video/mp4: signing supported, verification supported. Signable under C2PA 2.2 and 2.4. Covered by the formal C2PA 2.2 Conformance Program pass.
- Signing details
- Signed 2026-09-07T15:03:33.340Z through POST /api/v1/sign/media with action c2pa.opened, 1 declared ingredient. Signed with C2PA Content Credentials, without a separate watermark. SHA-256 of the published bytes: 5d03b045585d824df04b5fcd34bf1c5418a04000ddce2beaa4c4bbc4adc88f49
Composition with ingredients
A derivative signed with its source declared as an ingredient
Connect the finished asset to its source material. This composition includes a previously signed file as a declared ingredient. Verify it to inspect the source and its relationship to the final asset.
Download the signed file31,933 bytes, image/jpeg. Free, no account.
| Check | Recorded at signing | Verify to see live results |
|---|---|---|
| Verdict | valid | - |
| Integrity | not reported | - |
| Signer trust | trusted | - |
| Signer | Encypher | - |
| Declared spec version | 2.4 | - |
| Validated under | 2.4 | - |
| RFC 3161 timestamp | yes | - |
| Watermark signal | not reported | - |
| Ingredients | encypher-card-signed.jpg (parentOf) | - |
| Conformance gate | not reported / not reported | - |
Recorded verification: 2026-09-07T15:37:53.098Z from POST /api/v1/verify/image.
- Format support
- image/jpeg: signing supported, verification supported. Signable under C2PA 2.2 and 2.4. Covered by the formal C2PA 2.2 Conformance Program pass.
- Signing details
- Signed 2026-09-07T15:37:53.153Z through POST /api/v1/sign/media with action c2pa.resized, 1 declared ingredient. Signed with C2PA Content Credentials, without a separate watermark. SHA-256 of the published bytes: c0653387e3d2acac6c3e4af1a6ca3da4018e816d9795e319996d2e2976a607c5
Format coverage
Find your format. Sign and verify.
75+ formats for signing and verification. Explore signing support, verification support, and C2PA versions below.
| Measure | Count | What it means |
|---|---|---|
| Signing and verification | 79 | File formats supported for both signing and verification. |
| Signing support | 86 | File formats accepted by the signing API. |
| Verification support | 79 | File formats supported by the verifier, with the evaluated C2PA version included in each result. |
| Signing under C2PA 2.4 | 76 | Formats that support both signing and verification, with signing available under C2PA 2.4. |
| Accepted media-type spellings | 101 | Accepted MIME types, including aliases such as image/jpg for image/jpeg. |
| Formal C2PA 2.2 conformance | 20 | Media types covered by Encypher's formal C2PA 2.2 Conformance Program pass. |
| Watermarking | separate | Watermarking has its own media support. These samples demonstrate embedded C2PA Content Credentials. |
Joint sign-and-verify formats by category: audio 6, document 37, font 3, image 13, text 13, video 7. Source: the public capability matrix.
C2PA support by format
Find the signing versions and formal conformance coverage for each file format.
audio (6)
| Media type | Signs under | Formal conformance |
|---|---|---|
| audio/aac | not reported | C2PA 2.2 |
| audio/flac | 2.2, 2.4 | none |
| audio/mp4 (also audio/x-m4a, audio/m4a) | 2.2, 2.4 | C2PA 2.2 |
| audio/mpeg (also audio/mp3, audio/mpa) | 2.2, 2.4 | C2PA 2.2 |
| audio/ogg (also application/ogg) | 2.4 | none |
| audio/wav (also audio/wave, audio/x-wav) | 2.2, 2.4 | C2PA 2.2 |
document (37)
| Media type | Signs under | Formal conformance |
|---|---|---|
| application/epub+zip | 2.2, 2.4 | none |
| application/oxps (also application/vnd.ms-xpsdocument) | 2.2, 2.4 | none |
| application/pdf | 2.2, 2.4 | C2PA 2.2 |
| application/vnd.adobe.indesign-idml-package | 2.4 | none |
| application/vnd.apple.keynote | 2.4 | none |
| application/vnd.apple.numbers | 2.4 | none |
| application/vnd.apple.pages | 2.4 | none |
| application/vnd.google-earth.kmz | 2.4 | none |
| application/vnd.ms-excel.sheet.binary.macroenabled.12 | 2.2, 2.4 | none |
| application/vnd.ms-excel.sheet.macroenabled.12 | 2.2, 2.4 | none |
| application/vnd.ms-excel.template.macroenabled.12 | 2.2, 2.4 | none |
| application/vnd.ms-powerpoint.presentation.macroenabled.12 | 2.2, 2.4 | none |
| application/vnd.ms-powerpoint.slideshow.macroenabled.12 | 2.2, 2.4 | none |
| application/vnd.ms-powerpoint.template.macroenabled.12 | 2.2, 2.4 | none |
| application/vnd.ms-visio.drawing | 2.2, 2.4 | none |
| application/vnd.ms-visio.drawing.macroenabled.12 | 2.2, 2.4 | none |
| application/vnd.ms-visio.stencil | 2.2, 2.4 | none |
| application/vnd.ms-visio.stencil.macroenabled.12 | 2.2, 2.4 | none |
| application/vnd.ms-visio.template | 2.2, 2.4 | none |
| application/vnd.ms-visio.template.macroenabled.12 | 2.2, 2.4 | none |
| application/vnd.ms-word.document.macroenabled.12 | 2.2, 2.4 | none |
| application/vnd.ms-word.template.macroenabled.12 | 2.2, 2.4 | none |
| application/vnd.oasis.opendocument.graphics | 2.2, 2.4 | none |
| application/vnd.oasis.opendocument.presentation | 2.2, 2.4 | none |
| application/vnd.oasis.opendocument.spreadsheet | 2.2, 2.4 | none |
| application/vnd.oasis.opendocument.text | 2.2, 2.4 | none |
| application/vnd.openxmlformats-officedocument.presentationml.presentation | 2.2, 2.4 | none |
| application/vnd.openxmlformats-officedocument.presentationml.slideshow | 2.2, 2.4 | none |
| application/vnd.openxmlformats-officedocument.presentationml.template | 2.2, 2.4 | none |
| application/vnd.openxmlformats-officedocument.spreadsheetml.sheet | 2.2, 2.4 | none |
| application/vnd.openxmlformats-officedocument.spreadsheetml.template | 2.2, 2.4 | none |
| application/vnd.openxmlformats-officedocument.wordprocessingml.document | 2.2, 2.4 | none |
| application/vnd.openxmlformats-officedocument.wordprocessingml.template | 2.2, 2.4 | none |
| application/x-krita | 2.4 | none |
| application/zip | 2.2, 2.4 | none |
| image/openraster | 2.4 | none |
| model/3mf | 2.4 | none |
font (3)
| Media type | Signs under | Formal conformance |
|---|---|---|
| font/otf | 2.2, 2.4 | none |
| font/sfnt (also application/font-sfnt) | 2.2, 2.4 | none |
| font/ttf (also application/x-font-ttf) | 2.2, 2.4 | none |
image (13)
| Media type | Signs under | Formal conformance |
|---|---|---|
| image/avif | 2.2, 2.4 | C2PA 2.2 |
| image/gif | 2.2, 2.4 | C2PA 2.2 |
| image/heic | 2.2, 2.4 | C2PA 2.2 |
| image/heic-sequence | 2.2, 2.4 | none |
| image/heif | 2.2, 2.4 | C2PA 2.2 |
| image/heif-sequence | 2.2, 2.4 | none |
| image/jpeg (also image/jpg) | 2.2, 2.4 | C2PA 2.2 |
| image/jxl | 2.2, 2.4 | C2PA 2.2 |
| image/png | 2.2, 2.4 | C2PA 2.2 |
| image/svg+xml | 2.2, 2.4 | C2PA 2.2 |
| image/tiff | 2.2, 2.4 | C2PA 2.2 |
| image/webp | 2.2, 2.4 | C2PA 2.2 |
| image/x-adobe-dng | 2.2, 2.4 | C2PA 2.2 |
text (13)
| Media type | Signs under | Formal conformance |
|---|---|---|
| application/javascript | 2.4 | none |
| application/json | 2.4 | none |
| application/toml | 2.4 | none |
| application/xhtml+xml | 2.4 | none |
| application/xml | 2.4 | none |
| application/yaml | 2.4 | none |
| text/css | 2.4 | none |
| text/csv | 2.4 | none |
| text/html | 2.4 | none |
| text/markdown | 2.4 | none |
| text/plain | 2.4 | none |
| text/tab-separated-values | 2.4 | none |
| text/xml | 2.4 | none |
video (7)
| Media type | Signs under | Formal conformance |
|---|---|---|
| application/mp4 | 2.2, 2.4 | none |
| application/mxf | not reported | none |
| video/matroska (also video/x-matroska) | not reported | none |
| video/mp4 | 2.2, 2.4 | C2PA 2.2 |
| video/quicktime | 2.2, 2.4 | C2PA 2.2 |
| video/x-m4v | 2.2, 2.4 | none |
| video/x-msvideo (also video/avi, video/msvideo) | 2.2, 2.4 | C2PA 2.2 |
Samples published 2026-09-07T15:37:53.153Z. SHA-256 digests identify each downloadable file.
Sign your first file.
Start free with Encypher's platform signing identity. Add Content Credentials to your output and verify the result.