BlockContentSeal generates a cryptographic certificate for every piece of content you publish — anchoring authorship, timestamp, and integrity on an immutable public record that anyone can verify, instantly.
In an era of AI-generated content, synthetic replicas, and malicious re-edits, readers and platforms can no longer trust a URL alone. The journalism you've built your reputation on can be copied, altered, and redistributed — with no way to prove which version is original. Your byline isn't enough anymore.
BlockContentSeal works inside your existing content workflow. Your editorial team never changes how they work — the seal happens automatically at publish time.
BlockContentSeal is available via a clean REST API. If your platform can make an HTTP request at publish time, it can have content provenance in production today.
Paste any URL from a BlockContentSeal-protected publisher. We'll return its authenticity status, original certificate, and full chain of proof in under a second.
Certificates are anchored on public blockchains. Anyone can verify them without involving BlockContentSeal — including after we're gone. Not even we can alter a sealed record.
Read the architecture →SHA-256 content hashing means any alteration — even a single character — invalidates the certificate and flags the content immediately. Mathematical certainty, not policy.
View technical details →BlockContentSeal is built on and compatible with C2PA — the Coalition for Content Provenance and Authenticity. No proprietary lock-in. The emerging industry standard.
C2PA compatibility →Breaking news is when content gets copied, misquoted, and replicated fastest. BlockContentSeal creates an unimpeachable timestamp at publish — giving you a permanent record of exactly what you reported, and when, before anyone else could have altered the narrative.
When a story goes viral and variants start circulating, your original is provably yours.
Protect your newsroom →Wire content is republished dozens of times before end-of-day. BlockContentSeal gives the originating outlet a permanent proof-of-origin that travels with the content — making it unambiguous which publication created the story and when.
See integration →AI can generate articles that look like yours. It cannot generate a certificate that was anchored on-chain before the AI existed. BlockContentSeal's provenance timestamp is the one signal AI-generated impersonators can never fake.
Start protecting content →BlockContentSeal creates a legally-relevant chain of evidence for every published document. Timestamps are verified to the second. Content integrity is cryptographically guaranteed. Certificates are independently auditable without involving BlockContentSeal.
Book enterprise demo →The embeddable BCS verified badge gives readers immediate confidence — without requiring any technical knowledge. One click shows the full provenance record: who wrote it, when, and that it hasn't changed.
Add the verified badge →Join the newsrooms, independent journalists, and news platforms using BlockContentSeal to permanently protect their editorial credibility.