Ꭰ-SAFE
Professional classification, powered by cutting-edge AI, for public-domain review and corpus collections around the world. We check who wrote a work, whether it’s safe for learners, and whether it’s free to share.
Every decision comes with a written reason, and every review goes on a public ledger. A work reviewed once can be trusted by every library, everywhere.
Now accepting pilot applications
dsafe.us
Illustrative review records
Examples of the record every decision produces. Public records are not available yet.
Work
Submitted by: Educator
Decision
Approved
Written reason
A person wrote it, it stays clear of every excluded topic, and anyone may share it. This work carries the Ꭰ-SAFE label.
Work
Submitted by: Publisher
Decision
Refused
Written reason
We could not confirm that a person wrote this work. The subject is fine. Send drafts or a signed authorship statement and we will look again.
Illustrative review records
Examples of the record every decision produces. Public records are not available yet.
Work
Submitted by: Author
Decision
Refused
Written reason
The writing is original and free to share, but it gives medical advice, which is on the public exclusion list. This is about the topic, not the author.
Work
Submitted by: Library
Decision
Refused
Written reason
The book is still in copyright and the library has no licence to share it. A licence from the rights holder would let us review it again.
The standard
A person wrote it, and it isn’t copied.
It avoids every topic on our public exclusion list.
It is public domain or properly licensed.
Ꭰ-SAFElabelEvery decision
A refusal without a reason is censorship.
A refusal with a reason is stewardship.
Every decision — approval or refusal — comes with a written reason. You always know what was checked, what was found, and what would change the outcome.
Reusable by design
A review shouldn’t sit in one library’s files. Every D-SAFE review is stored publicly on web3: cost-effective smart contracts keep a public ledger of every decision and its reason, open to everyone and owned by no one.
When a library in one country clears a work, a library on the other side of the world doesn’t have to pay to check it again.
AI reads. People write. AI does the heavy reading at the scale of whole collections. It never writes the works we label: the standard itself requires a human author.
A benefactor pays for a public-domain book to be scanned, digitised and assessed.
D-SAFE classifies the work against the public standard and writes down the reason.
The decision is recorded automatically on a public ledger by a low-cost smart contract.
Anyone can read it, question it, correct it, appeal it, and rely on it.
Safe content, defined in public
Nothing personal, and no judgement of quality: these subjects are simply out of scope. The list is public, so you can check a work yourself before you send it.
Who it’s for
need A trusted way to show their work is really theirs, safe for learners, and free to share.
need To know a work can be trusted and legally shared before it joins a collection or corpus, and to reuse reviews other collections have already paid for.
need To fund the digitisation and review of a public-domain book once, knowing the result becomes a public good.
need A dated record of what was checked on a work, and what was decided.
need A clear way to report misuse of their work and have unauthorised copies removed.
Step by step
Read the exclusion list and make sure the work is yours, or free, to share.
Send us the title, a link, and your proof of authorship and rights.
AI-assisted classification checks the three things (author, content, rights) against the standard.
You get a decision and a written reason, and both go on the public ledger. Approved works carry the label.
Roadmap
Establishment of the D-SAFE registry.
DonePublic review collection for the D-Open Code Sovereign Licence.
Certification union assessment service for the D-Open Code Sovereign Licence.
Now accepting pilot applications
Educators, authors, libraries and corpus builders can apply to have their first works reviewed during the pilot. Benefactors can sponsor a public-domain book. Write to us with the title, a link, and what you know about its rights.
or write to hello@dsafe.us
hello@dsafe.us
Apply for the pilot · Sponsor a public-domain book · Report a copyright problem