INVISIBLE ID + DIGITAL EVIDENCE

From a found copy to an evidence chain.

Signaturum embeds an invisible ID into content and records a SHA-256 fingerprint with a timestamp. This helps trace a copy back to its source and strengthen evidence of authorship and chronology for a claim or court dispute.

Products Pricing

Recipient-specific IDs • SHA-256 + timestamp • API • Windows / macOS / Linux

One platform, two ways to use it

API-first for teams

Automate embedding, verification and recipient-specific identifiers inside your workflow.

Simple tools for creators

Protect or register a single work without building an integration.

Technology that keeps improving

Models evolve without forcing you to redesign the workflow: identifiers, verification and API access stay within one platform.

WHAT IT IS FOR

Content can be copied. Its source can still be traced.

Signaturum helps preserve the link between a distributed file and your record of who received it, when and in what context.

Trace distributed copies

Issue a different identifier for each recipient, customer, partner or delivery batch and keep the mapping on your side.

Automate media workflows

Use the API to embed and verify identifiers at upload, export, delivery or investigation time.

Investigate transformed copies

Verify found copies after compression, resizing, re-encoding and other supported transformations.

Protect individual works

Creators can watermark or timestamp images and other supported content without an enterprise integration.

THREE DISTINCT LAYERS

Three layers for different jobs

Invisible IDs help trace copies, SHA-256 verifies an exact file, and timestamped records establish chronology.

Traceability

Invisible content ID

An invisible machine-readable ID is embedded into the content itself and can be read by a compatible detector after supported transformations.

Useful when metadata may disappear or copies are transformed.

Integrity

SHA-256 fingerprint

A cryptographic hash identifies one exact byte-for-byte file. For supported depositing flows it can be calculated locally before only the fingerprint is registered.

Excellent for proving that an exact file matches a prior record; it does not survive file changes.

Chronology

Timestamped record

A hash or identifier can be linked to a timestamped registry or blockchain transaction so the record can be independently checked later.

Helps show that a specific digital fingerprint existed by a certain point in time.

How Signaturum differs from ordinary protection methods

Traditional methods solve only part of the problem. Signaturum combines copy traceability with timestamped proof of the original file.

Method	What it is useful for	Main limitation	What Signaturum adds
Visible watermark	Shows ownership visually and can discourage simple copying	Visible, changes the image and can be cropped, covered or removed.	An invisible ID does not cover the content; different recipients can receive different IDs.
EXIF / metadata	Stores author, description, camera and workflow context	Often stripped during export, platform upload or transcoding.	The ID is embedded into the content itself, not only metadata, and can be read by the detector.
Signaturum: invisible ID	Links a found copy to a specific distribution event or recipient	Robustness depends on the type and depth of transformation; critical workflows should be validated in advance.	The core traceability layer: unique IDs, detector, API and desktop apps.
Hash + timestamp	Confirms the exact original file and records when its fingerprint existed	Any file change produces a different hash; the hash alone cannot identify a transformed copy.	Used together with the invisible ID: the hash and timestamp strengthen evidence, while the ID links a found copy to its distribution record.

Together, these layers create a connected chain: original file → timestamp → distributed copy → found material → additional evidence.

VISUAL QUALITY DEMO

The identifier is designed to stay out of the way

Compare the original and protected versions — the identifier is designed for minimal visual impact.

Protected Original

Choose a sample and move the slider to compare both versions of the same scene.

THE SIGNATURUM ECOSYSTEM

Protection, distribution and verification in one platform

Use one module or combine them into a traceability workflow — from embedding an ID to finding a leaked copy and documenting what happened.

Available

Blockchain depositing

Register the SHA-256 fingerprint of an exact file with a timestamp and receive an online certificate linked to the verification record. The source file is not written to the public blockchain.

Verifiable chronology for an exact file
Certificate and public verification link
Useful alongside other evidence in claims and disputes

Adds a time anchor: you can later show that a specific fingerprint was already registered at a particular moment.

Learn more

Available

Invisible watermark

Embed a machine-readable identifier into images and other supported content so the copy can be checked after common transformations. Assign different IDs to different recipients or distribution batches.

Recipient- or copy-specific identifiers
Verification of found or modified copies
API and manual workflows

Turns a found copy into attribution data: the recovered ID can be compared with your distribution records.

Learn more

Platform module

Protected storage

Managed storage for media and documents with controlled access. It can be combined with server-side watermarking when content must be prepared automatically before delivery.

Access-controlled content storage
Embedding during export or delivery
A single workflow for files and IDs

Useful when the protected copy should be generated automatically at the moment it is issued.

Learn more

Platform module

Protected video player & API

A controlled player workflow that can apply a viewer-specific invisible ID during playback or delivery and integrate with an LMS or your own authorization system.

Viewer-specific watermarking
API, SDK or embedded integration
Domain rules, viewing analytics and access controls

If a protected frame or copy is later found, the viewer ID can help narrow the source of distribution.

Learn more

Platform module

Protected PDF reader

Controlled browser rendering for documents with reader-level identification and reading analytics. Designed for materials that should be viewed without handing out the original PDF directly.

Reader-specific identification
Controlled browser delivery
Views, reading time and page progress

Links the viewing session to a recipient record and strengthens traceability for documents distributed to a limited audience.

Learn more

Monitoring module

Signaturum Crawler

Automated monitoring for redistributed content. The crawler can collect candidate findings and send them to watermark verification instead of relying only on visual similarity.

Continuous monitoring of selected sources
Watermark verification and incident records
URL, time and recovered identifier in one case file

When a valid ID is found, you can connect the incident to a distribution record and preserve the finding for a claim, takedown or evidence package.

Learn more

Two paths, the same evidence chain

Teams automate the whole chain. Creators can use the same principles one file at a time.

For teams and platforms

Assign an identifier

Use a content ID, recipient ID or your own reference that maps to a specific distribution record.

Embed it at delivery

Call the API when exporting, distributing or delivering content to a recipient.

Identify and document a finding

Run verification on a suspicious copy, match the recovered ID to your records and preserve the finding together with timestamps and related evidence.

API for business

For creators

Choose your work

Open the watermark or depositing tool for a supported file.

Protect or timestamp it

Embed an ID, create a timestamped fingerprint record, or combine both depending on your goal.

Keep a verification path

If the work is later copied or disputed, use the relevant verification tool and keep the result together with your other authorship and distribution records.

Protect a file

Need exact-file verification?

The hash verifier is for byte-for-byte integrity and timestamp records. Watermark detection is a different process for transformed copies.

Open hash verification

TIMESTAMPED EVIDENCE

Record that a file existed at a point in time

Digital depositing creates a verifiable SHA-256 fingerprint and time record. The original file is not published to the blockchain.

Calculate the SHA-256 hash

In supported depositing flows the fingerprint can be calculated locally, so the original file does not need to be written to a public blockchain.

Register the fingerprint

The fingerprint and time information are linked to a registry or blockchain transaction that can be checked independently.

Verify the exact file later

Recalculate the hash and compare it with the prior record to show that the exact file matches the registered fingerprint.

How this supports enforcement

The timestamped record helps show that a specific digital fingerprint existed at a stated time. Combined with a recovered watermark ID, your distribution records and a preserved copy or URL of the finding, it can form part of a structured evidence package for a claim, takedown request or legal dispute.

Open verifier

From attribution to action

A practical trail that connects the content you distributed, the copy you found and the records you can rely on afterwards.

Source attribution

Use different IDs to connect a discovered copy to a recipient, customer, partner or distribution batch.

Evidence package

Combine the recovered ID, captured finding, distribution records and timestamps into materials that can support a claim, takedown or legal dispute.

Verifiable chronology

Deposit exact-file fingerprints when timing and priority matter, then verify the same file against the earlier record.

Workflow automation

Use the API to embed, verify and record identifiers at scale instead of processing each file manually.

Customer feedback

Feedback from creators and teams using different Signaturum tools.

Share your experience

Eva.

Journalist

27.10.2025

I timestamp sensitive documents and interview recordings. The fact that the file never leaves my computer is the most important feature for me.

Mikey.

Beatmaker

15.10.2025

Dope service. Timestamped my whole beat pack. Now I can share with A&Rs and rappers without worrying. 10/10.

Karen.

Course Creator

03.10.2025

My course materials were stolen last year. Now I timestamp everything. The peace of mind is invaluable. The interface is clean and simple to use.

Paul.

Video Editor

20.09.2025

I digital fingerprint my final renders. The certificate is a good "value-add" for my clients, shows I'm serious about IP.

Anonymous

05.09.2025

It works. But why Global Registry? Why not Secure Cloud mainnet? I guess for the fees. It's fast, I'll give you that.

All reviews

TEAM

The people behind Signaturum

Software, machine learning, product growth and legal expertise in one team.

Konstantin Khoryshev

CEO & Founder

Lawyer and developer. Combined 5 years of legal practice and 4 years of software development to build the Signaturum architecture.

Egor Kramarenko

Legal Advisor

International-law specialist with 4 years of experience, focused on supporting businesses across EU and Asian jurisdictions.

Anastasia Sergeeva

Head of Growth

Leads client development, partnerships and service quality as Signaturum expands its business use cases.

More about the company

SIGNATURUM DESKTOP

Protect and verify files directly on your computer

Ready-to-use apps for Windows, macOS and Linux. Apply and check invisible marks through a simple interface — no API setup required.

Windows

macOS

Linux

Download the app

Pricing by workflow

Creator packs, business usage and infrastructure plans in one catalog. One-time purchases and recurring plans are labeled separately.

Start

50 protections with no expiration

25 $

35 $

Images, video and PDF documents
Invisible marking without visible degradation
Resilient to common compression and resaving
Watermark verification
Generations never expire
Генерации водяного знака: 50

Buy package

Popular

Pro

200 protections for regular use

90 $

120 $

Images, video and PDF documents
Batch content processing
Robust invisible marking
Verification after publishing
Generations never expire
Генерации водяного знака: 200

Buy package

Business

1,000 protections for teams and large catalogs

400 $

550 $

Images, video and PDF documents
Large non-expiring package
Batch processing
Protected content verification
Priority support
Генерации водяного знака: 1 000

Buy package

Test

Sandbox

Free test environment — 1,000 requests per month

0 $ / month

Test API keys
Depositing and verification
Watermark and file management
Idempotent requests
Usage log
API-ключи: 1
Запросов в минуту: 2
Запросов в день: 100
Запросов в месяц: 1 000
Параллельные запросы: 1

Start testing

API Starter

100,000 production requests per month

29 $ / month

Production API access
Depositing and verification
Watermark and file management
Webhook notifications
Usage statistics
API-ключи: 3
Запросов в минуту: 30
Запросов в день: 10 000
Запросов в месяц: 100 000
Параллельные запросы: 5

Enable API

Popular

API Business

1,000,000 production requests per month

99 $ / month

Higher production limits
Multiple API keys
High request concurrency
Webhook integrations
Priority support
API-ключи: 10
Запросов в минуту: 120
Запросов в день: 100 000
Запросов в месяц: 1 000 000
Параллельные запросы: 25

Enable API

Scale

API Scale

10,000,000 production requests per month

299 $ / month

Maximum production limits
Up to 50 API keys
High throughput
Advanced webhook integrations
Priority assistance
API-ключи: 50
Запросов в минуту: 600
Запросов в день: 1 000 000
Запросов в месяц: 10 000 000
Параллельные запросы: 100

Enable API

Single

1 file

4 $

7 $

1 secure record
Free PDF certificate
Permanent proof storage
Public verification link
Депонирования: 1

Get Started

Standard

5 files

15 $

35 $

5 secure records
Free PDF certificates
Permanent proof storage
Public verification link
Priority support
Депонирования: 5

Get Started

Pro

20 files

50 $

140 $

20 secure records
Free PDF certificates
Permanent proof storage
Public verification link
API Access (soon)
Депонирования: 20

Get Started

Enterprise

For Business

On request

Custom number of records
Dedicated account manager
IP/IT legal assistance
API & Integrations
Invoice payments
Депонирования: Unlimited

Start — 5 GB

For personal portfolios and small catalogs

5 $ / month

Protected file storage
PDF reader and video player
Embed domain allowlist
View and bandwidth metering
Access controls
Объём диска: 5 GB
Максимальный размер файла: 500 MB
Количество файлов: 1 000
Страниц PDF на файл: 500
Страниц PDF всего: 2 000

Popular

Pro — 50 GB

For creators, online schools and small teams

20 $ / month

Protected file storage
PDF reader and video player
Higher embed limits
Viewer statistics
Domain and access controls
Объём диска: 50 GB
Максимальный размер файла: 2 GB
Количество файлов: 5 000
Страниц PDF на файл: 2 000
Страниц PDF всего: 10 000

Business

Business — 500 GB

For platforms, publishers and large libraries

80 $ / month

500 GB protected storage
High PDF and video limits
Scalable embedding
Domain and session controls
Priority support
Объём диска: 500 GB
Максимальный размер файла: 5 GB
Количество файлов: 50 000
Страниц PDF на файл: 5 000
Страниц PDF всего: 50 000

Starter

Monitor up to 50 objects

9 $ / month

Discovery of copied content
Automated scanning
Saved match candidates
Result history
Match notifications
Объекты мониторинга: 50
Запуски сканирования: 200
Просканированные страницы: 10 000
Минимальный интервал: 1 440
Источников на объект: 10

Popular

Pro

Monitor up to 500 objects

29 $ / month

Expanded copy discovery
Frequent automated scanning
More sources per object
Match history and evidence
Priority processing
Объекты мониторинга: 500
Запуски сканирования: 3 000
Просканированные страницы: 200 000
Минимальный интервал: 360
Источников на объект: 50

Business

Monitor up to 5,000 objects

99 $ / month

Large-scale content monitoring
High scanning frequency
Expanded candidate collection
Evidence history and export
Priority queue
Объекты мониторинга: 5 000
Запуски сканирования: 30 000
Просканированные страницы: 2 000 000
Минимальный интервал: 60
Источников на объект: 200

One-time and recurring billing terms are shown separately for each plan before purchase.

Frequently asked questions

What does an invisible watermark give me?

It keeps a machine-readable ID inside the content and helps connect a found copy with your delivery or provenance record.

Where are my files processed?

It depends on the service. SHA-256 can be calculated locally in supported depositing flows. Watermark embedding, API processing and managed storage may use Signaturum infrastructure.

What transformations can the watermark survive?

Supported workflows include different forms of compression, resizing, re-encoding and other transformations. Results depend on the content and severity of processing; for B2B deployments we recommend validating your typical scenarios first.

Can I identify the source of a leak?

Yes, when each distributed copy receives its own ID and you retain the mapping between ID and recipient. The recovered ID can be matched to that record; if you also preserve the finding and timestamp/deposit records, the result can support a claim, takedown or evidence package.

What does a blockchain timestamp provide?

It records when a digital fingerprint existed. This is useful for establishing chronology and can form part of an evidence package.