// C2PA content credentials
Prove your campaign was made by a person you can name.
Then bill for it.
Every creative you employ or commission gets their own signing certificate, so the work resolves to a named person rather than to your letterhead. Clients, regulators and licensees open the full provenance in a click using the free Verifieddit extension for Chrome or add-on for Firefox: who made it, what changed, and whether AI touched it. Agencies bill it as a deliverable. From August 2026, EU clients have to ask for it anyway.
The 30-Day Newsroom Provenance Pilot. Certificates issued for your organisation and every contributor, signing live in your pipeline, and your first asset verifying publicly inside 30 days, or we keep working free until it does. From $49 a month.
// the threat
Your client cannot tell your work from a synthetic. Neither can their lawyer.
Generative models have crossed the line where pixel-level forensics stop working. What survives is provenance: a cryptographic receipt, signed at capture or in the edit suite, that proves a named person in your organisation made this asset. Agencies, studios and licensors are the ones being asked to warrant it.
// and the belonging
Your organisation joins the chain of custody for visual truth.
Trusteddit issues your producer certificate, and you sign each asset at the source. The verification tools we embed in your site or client deliverables, together with the Verifieddit extension for Chrome and add-on for Firefox, let your readers verify your content in a click. Not just a green tick either: the extension opens the full manifest, so anyone can read who signed the asset, which certificate authority vouched for them, what the trusted timestamp says, every edit recorded in the chain, and whether an AI origin was declared. It works on content from any other provider too. The provenance flows back to you as trust.
// sandbox / live
Drop a media file. See its provenance.
The exact C2PA engine that powers Verifieddit. Your file is checked by the same verification service, over an encrypted connection, and not retained. A preview of the white-label verifier we ship for paying Trusteddit producers.
drag a media file here
Images, video, audio, PDF. Your file is sent over an encrypted connection to the Verifieddit verification service, checked there, and not retained.
or click to pick a file
Drop a file on the left. Results appear here.
Powered by verifieddit.com. Files are transmitted to the Verifieddit verification service for analysis and are not retained. Verification activity is sent to analytics.sanmarcsoft.com for product analytics.
in production
The Phenom App
SanMarcSoft’s Trusteddit platform is the exclusive technology partner to The Phenom App, the UAP reporting and collaborative research platform. The Phenom App captures field footage where the whole question is whether the recording is authentic. Every asset is signed at the source and timestamped, so a researcher receiving it can check the chain of custody instead of arguing about it.
The Phenom App, featured on
// built for your scale
One certificate per contributor. Not one per masthead.
EU AI Act Article 50 transparency obligations apply from August 2026
Every photographer, designer, illustrator, videographer and writer gets their own signing certificate, so provenance resolves to the person who made the asset, not just to the outlet that published it. When a single image is challenged, you can show which contributor signed it and when, instead of vouching for the whole newsroom at once. One contested image costs more in legal review and lost audience trust than a year of the Independent band.
who signs with us
Anywhere a named person makes original work and someone downstream needs to know it was them: newsrooms and mastheads, multimedia portals, independent creators and influencer networks, graphic design studios, advertising agencies, architecture practices, animation studios, artist organisations, and press associations including foreign press associations.
The pattern is the same in all of them. The organisation holds the relationship, the individual holds the credit, and the certificate is what keeps the two attached once the work leaves your systems.
Solo journalist, creator, designer, small studio
Independent
$49/ month
3 contributor certificates
Up to 2,000 signed assets / month
Extra certificates $18 each / month. No call, no procurement.
Mastheads, studios, agencies, practices, associations
Mid-market
$499/ month
50 contributor certificates
Up to 200,000 signed assets / month
Extra certificates $12 each / month. Covers a typical masthead or portal roster.
Wire services, syndicates, national associations
Wire-scale
Custom
Unlimited contributor certificates
200,000+ signed assets / month
Private CA or dedicated TSA where your roster justifies it.
the guarantee
Sign your first asset and watch it verify in the Verifieddit extension within 30 days, or we keep working with your team, free, until it does.
We can offer that because the verifier is public. You do not have to take our word for whether a signature checks out; you can look.
// glass-to-glass
Issue. Sign. Publish. Verify.
Trusteddit
Producer side
Issue
A C2PA certificate from the Trusteddit CA for the outlet, and one for each contributor.
Sign
POST your asset to signing-api at you.trusteddit.com, with an RFC 3161 trusted timestamp on every signature.
Publish
Archive it, licence it, syndicate it. The proof travels inside the file, including through republication by third parties.
Verifieddit
Consumer side
Verify
Chrome extension, Firefox add-on, web validator, SDK. Read the whole chain, not just a verdict.
// for engineers
Your engineer wants a sandbox key, not a sales call.
Full SDK, curl examples, and a working signed asset in ten minutes. Send your integration engineer here first. The meeting goes faster.
// request a call
Want to talk to a human?
Send a few times that work for you. We reply directly, usually same day.
// the other half of the loop
Verifieddit closes it.
Signatures without a verifier are dead weight. Verifieddit ships the browser extension for Chrome, the add-on for Firefox, the web validator, and the SDK that turn your trust receipts into proof anyone can check in full detail, including the platforms your audience lives on.
Explore Verifiedditalso coming · Youseddit, provenance-aware publishing built on Trusteddit. Waitlist.
// faq
Questions producers ask first.
Does this slot into my existing DAM / MAM and CMS?
Yes. Trusteddit signs at the producer edge and emits standard C2PA manifests; your existing storage and editorial workflow stays put. The signing call is a single POST.
What does signing cost?
We price on contributor certificates, not seats. Independent is $49 a month with 3 contributor certificates and up to 2,000 signed assets, and you can start without talking to us. Mid-market is $499 a month with 50 contributor certificates, which covers a typical masthead, multimedia portal or creator roster, and extra certificates are $12 each per month. Wire-scale is a contract, because a private CA or dedicated TSA has to be sized to your roster. All bands are listed above.
Why one certificate per contributor rather than one per outlet?
Because a masthead-wide signature only proves the outlet published the asset. A contributor certificate proves which photographer, designer, illustrator or writer actually made it, and when. If a single image is challenged, you show that one chain rather than vouching for the whole newsroom. It also means a contributor keeps a verifiable body of work that travels with them.
Who is already using Trusteddit in production?
The Phenom App, the UAP reporting and collaborative research platform, is a paying production customer, and SanMarcSoft's Trusteddit platform is its exclusive technology partner; see the section above. Newsroom case studies publish as each engagement completes its 30-day evaluation.
Does Verifieddit actually have to run?
For signatures to count, yes. A verifier has to check them. Verifieddit ships a free extension for Chrome and a free add-on for Firefox, plus a web validator and an SDK, so any reader, platform, or partner can inspect the full manifest without integration work on your side.