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root@docker-lab:~# verify DL1-XNQJ-7ESS

Check a certificate

Holder

VITOR MICILLO

Certificate

DL-110 Linux Foundations

Result
Merit · 100%
Issued
17 October 2026
Credential ID
DL1-XNQJ-7ESS
Valid
For life

What the exam tested

  • navigate the file system
  • create, copy, move, delete
  • read and search files
  • pipes and redirection
  • shell history
>_110

How we checked it

  1. The record was found on dockerlinux.com, the only place that issues DockerLinux certificates.
  2. Its Ed25519 digital signature was checked just now against our public key, published at dockerlinux.com/.well-known/did.json. Changing one letter of the name or the score breaks it.
  3. It has not been revoked.
  4. The exam is hands-on: our server replayed every command the holder typed on its own copy of the machine, then graded it.

Signed credential (.json, Open Badges 3.0) · Our public key (did.json)

Check another ID

Only the name, the certificate, the result and the dates are shown here. The holder can make this page private at any time.

Signed by dockerlinux.com · Ed25519 · Open Badges 3.0 · Privacy