Document Verification
Every issued document leaves a fingerprint. Check it here.
This page verifies documents formally issued by ESPOIR FRONTIER Co., Ltd. Each issued document is registered with its identifier, version, issue date and SHA-256 fingerprint. Verification is available only on this page, at espoirfrontier.com.
Verify by document ID
The document ID is printed in the header of every issued document, next to the QR code (e.g. EF-CSP-2026-0001).
Verify a file
Drop the PDF you received. Your browser computes its SHA-256 fingerprint and compares it against the registry.
Drop a PDF here
SHA-256 · computed locally
Your file never leaves your device. The fingerprint is computed inside your browser; nothing is uploaded to us or to anyone else.
What a result means
Registered. The ID or fingerprint matches a formally issued document. Check that the version and issue date match the copy you hold; earlier versions are marked as superseded.
Not in the registry. The registry lists formally issued documents only. Drafts, internal papers and third-party material do not appear here. If a document presented to you as issued by ESPOIR FRONTIER cannot be verified on this page, treat it as unauthorized and contact us at contact@espoirfrontier.com before acting on it.
One address. We operate no other verification page, and official correspondence is sent only from @espoirfrontier.com addresses.