CopyrightChain Library · English PDF Guides

Free PDF guides on copyright, AI and digital proof.

A practical resource hub for creators, companies, agencies, designers and digital professionals: proof before sending, PDF certificates, public verification and human contribution in AI-assisted workflows.

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Each guide answers a practical question: how to document a file, when to create proof before sending, and what to keep before sending creative work to clients or partners.

Quick guideEN
SHA-256 hash explained simply

A clear introduction to SHA-256 fingerprints, file integrity and public verification for digital works and business documents.

SHA-256Digital proofVerification
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Practical guideEN
Practical guide to prior proof

How to create an organized record of a digital file before sharing, publishing or sending it to clients and partners.

Prior proofTimestampDigital file
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Creator guideEN
How to protect digital work

A concise workflow for documenting digital work with a final file, PDF certificate, public verification and simple archive method.

Digital workCreatorsPublic verification
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Visual guideEN
Designers and creatives: document sketches

A workflow for sketches, moodboards, visual concepts and design proposals before they circulate outside the studio.

DesignersSketchesCreative work
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Technical guideEN
Copyright, digital files and technical proof

How technical proof connects digital files, file integrity, SHA-256, PDF certificates and public verification.

CopyrightDigital filesTechnical proof
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ChecklistEN
Checklist before sending a file

A quick checklist before sending a logo, image, text, PDF, code, project file or creative asset to clients and collaborators.

ChecklistBefore sendingClients
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AI Proof guideEN
AI, creativity and human contribution

How to document prompts, drafts, revisions and human contribution when AI tools support a creative workflow.

AI ProofHuman contributionPrompt
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From PDF guide to digital proof

This library is designed as a practical path, not just a download list. Each guide helps readers understand when to save a version, what to collect and why a verifiable record should be created before sharing important work.

  • Short guides for creators, agencies, designers and digital teams.
  • Operational checklists before sending a logo, text, image, audio file, code or PDF.
  • A clear next step from reading to action: file, hash, PDF certificate and public verification.

Built for creators and companies

Use the guides before sharing logos, images, documents, code, presentations, AI-assisted content or client proposals. The goal is simple: create an organized technical record before the file circulates.

Have an important file?

Create digital proof with a PDF certificate, QR code and public verification before you send or publish it.

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