Independent certification · assessed and verifiable
Empowering global talent for the US AI economy.
A 24-course competency framework for annotation, prompt engineering and model evaluation. Learn free, pass the exam, then pay to unlock a certificate that any employer can verify in one request.
- 24
- courses across 4 categories
- 80%
- pass mark, server scored
- 2
- signatures checked per verify call
Certalyx Certificate
CERTALYX · REGISTRY OF COMPETENCY
This certifies that
A. N. Learner
has completed the assessed programme in Image Bounding Boxes and met the Certalyx pass standard of 80% or above.
Certificate ID
CERT-US-7QK2-M9XZ-KE
Issued
2026
Live verification response
{ status: "valid", signature_ok: true, used: false }
The standard
What a Certalyx certificate actually says
We publish the wording, the pass mark and the verification method. No claim of accreditation we do not hold, no partner logos we have not earned.
A Certalyx certificate records that a named person completed a defined syllabus and passed a scored assessment. Every certificate is signed, recorded in a registry and can be checked by anyone holding its ID.
Signed
Ed25519 signature on every record
Chained
Each issuance hashes the previous one
Revocable
Status is live, never a static PDF
Curriculum
Four categories. Three credential tiers.
Data Annotation & Labeling
Task-level production skills for image, text, audio, video and sensor datasets.
Prompt Engineering & LLM
Designing, hardening and evaluating instructions for large language models.
Model Evaluation & RLHF
Judgement work: preference ranking, hallucination, bias and multi-turn review.
Domain-Specific Evaluation
High-consequence review in medicine, law, finance, code and policy.
Selected courses
View all →Image Bounding Boxes
Draw tight, class-correct boxes for object detection datasets and defend them under QA review.
Zero-Shot Prompting
Getting a correct first answer with a single instruction and an explicit output contract.
RLHF Preference Ranking
Ranking model responses on a rubric, including ties, honesty and rater agreement.
Medical AI Evaluation
Reviewing clinical answers for escalation, overreach and source-backed claims.
Video Segmentation
Frame-accurate object tracks and action boundaries across long clips.
Hallucination Detection
Separating fluent invention from grounded fact and rating severity.
How it works
You pay when you have already won.
01
Enrol free
Every course opens without payment. No card, no gate.
02
Study the modules
Written lessons with exercises, tracked module by module.
03
Practice mode
Five free questions so the real paper holds no surprises.
04
Sit the exam
Ten timed questions, scored on the server, 80% to pass.
05
Pay after you pass
Only a pass unlocks payment. Then the certificate issues.
Governance
The Standards Committee
Four standing functions govern the catalogue. Each one has a published remit and a named holder as appointments are made — we do not publish invented faculty.
Standing function
Curriculum
Writes and maintains the module text, learning outcomes and assessment criteria for all 24 courses.
Standing function
Assessment
Sets the pass mark, reviews every exam question and decides retake policy. Each question maps to a stated outcome.
Standing function
Registry
Maintains the signed certificate registry, the revocation list and the public verification endpoint.
Standing function
Learner support
Handles appeals, account problems and refund requests, with a written record for every decision.
Founding cohort
This wall fills as real learners pass and unlock their certificates. It currently shows only verified holders — which, at launch, is nobody. We would rather show an empty wall than a manufactured one.
Questions people actually ask
Do I pay before or after the exam?+
After. Learning, practice and the final exam are free. Payment is requested only once you have passed, and it unlocks the certificate rather than the result.
How does an employer check my certificate?+
They open the verify page with your certificate ID, or call the verification API. Both check the signature and the registry chain and return a live status.
What stops someone forging a certificate?+
Each certificate is signed with a key held only on our servers, and every record is chained to the one before it. A forged ID fails signature verification; an edited record breaks the chain.
What happens if I fail?+
Nothing is charged. You keep your progress, get the answer review, and can retake. Every attempt is logged so you can see the trend.
Do the certificates expire?+
No. A certificate stays valid unless it is revoked for misconduct, and revocation is visible on the verify page.
Start with the catalogue. Pay nothing until you pass.
Create an account, finish your profile, and open any course. The exam is free and the score is final — the fee only buys the credential.