AnthroSeal is an infrastructure for auditing human authorship in digital content. It was created to address a real market gap: the need to evaluate files through a neutral, multi-layer and independent system in the age of generative AI.

It is used to audit digital files — text, documents, images, audio, video and code — and obtain a Human Authorship Probability (HAP).

The result is collected in a downloadable technical report that you can attach, share and use to defend or assess a piece of content.

Through a cross-layer audit system called CLAP. C1 analyses provenance and technical signals in the file, C2 detects statistical patterns compatible with AI, and C3 evaluates originality, duplication or artificial synthesis depending on the file type.

The results are processed to calculate the HAP (Human Authorship Probability).

For creators who want to defend the value of their work: writers, designers, composers, photographers, programmers or creative teams.

Also for those who receive content and need more technical context before making decisions: media, universities, legal firms, insurers, HR teams or institutions.

In Spanish, we usually pronounce it “antrosil”. In English, “anzrosil”.

“Anthro” comes from Greek and refers to the human. “Seal” means seal. AnthroSeal can be understood as “human seal”: a way to accompany a file with technical evidence about its probability of human authorship.

It is an intentional double meaning.
On one hand, it expresses our vision of a future in which it will become increasingly important to support human work and human authorship with evidence, in an environment where artificial intelligence is increasingly involved in the creation of digital content and assets.

On the other hand, it also reclaims the value of the human as part of the infrastructure of the future: in a world with a growing presence of synthetic content, being able to document the origin, human involvement and traceability of a work may become a value in itself.

It is a reinterpretation of Leonardo da Vinci’s Vitruvian Man: the human figure inscribed in a circle and a square as a symbol of proportion, balance and measure.

AnthroSeal adds a third form: the outer hexagon, a symbol of structure and protection. Three forms, three layers, one system.

Because it is built entirely with SVG code. It is not a fixed image: it is a mathematical figure that can adapt to different sizes, colours and contexts without losing quality.

That flexibility fits the AnthroSeal system itself.

Web2 is the traditional platform experience: account, email, card and user dashboard.

Web3 adds verifiable records and blockchain infrastructure.

AnthroSeal combines both worlds: you use the platform like a normal SaaS, but with Silver and Gold audit levels, when an audit is passed, the result is recorded immutably.

VATS are AnthroSeal’s internal credits for running audits.

When you register, you receive 2 VATS as a gift, enough to test the system with compatible formats.

1 VAT = 1 €.

You do not need a wallet, cryptocurrencies or blockchain knowledge to use AnthroSeal. In practice, VATS work as platform credits: you buy VATS and use them to audit files.

Sometimes extraordinary solutions are adopted for simple problems.

At AnthroSeal, we prefer simple solutions for extraordinary projects.

At present, no system can guarantee 100%.

AnthroSeal provides a rigorous audit: it is multi-layered, does not depend on a single analysis, is technically justified and generates traceable and verifiable information. It combines several layers of analysis and applies proprietary algorithms to the data obtained during the process.

Operational note: certain analysis layers that depend on external providers may be subject to technical availability at any given time. AnthroSeal results express a probability of human authorship and should be interpreted within the technical scope of the audit performed.

Analysis systems have margins of error, and AnthroSeal is no exception. That is why the report does not show only a result: it includes the HAP, the analysed layers and the technical data obtained, as well as final conclusions that help interpret them.

If you believe the result does not correctly reflect the nature of the file, you can run a new audit. Each audit is executed independently.

AnthroSeal is an independent project created with a specific goal: to build neutral infrastructure for auditing human authorship in the age of generative AI.

It is not intended to be just another isolated detector. AnthroSeal is a meta-audit layer that combines technical signals, specialized providers and a justification report to offer a more complete evaluation.

AnthroSeal uses ARES (Autonomous Research & Evaluation System), a research and evaluation system for providers and technical sensors. It analyses available options, coverage, performance, cost, availability and suitability for each file type.

Active providers may vary depending on file type, selected audit level and technical availability. The report indicates which providers or technical sources participated in each layer of the analysis.

Bronze, Silver and Gold use the same AnthroSeal analysis logic, but apply different thresholds because they serve different purposes.

Bronze (85 %) — “I want to know”
Sets the threshold for determining whether a file shows signals compatible with human authorship.

Silver (92 %) — “I want to demonstrate”
Sets a more demanding threshold for a purpose oriented toward leaving pseudonymous traceability of the audit when the corresponding layer is operational.

Gold (96 %) — “I want to attribute”
Sets the most demanding threshold for a purpose oriented toward linking the file and its evidence to a verified identity when the corresponding layers are operational.

Bronze is not less rigorous. All three levels apply the same analysis logic. What changes is the threshold the file must pass depending on the purpose selected for the audit.

AnthroSeal accepts text, documents, images, audio, video and code. Available formats may depend on the plan and on the technical providers available at the time of the audit.

Most audits are completed in a few seconds or minutes, depending on file type, size, provider availability and whether blockchain registration is required.

HAP (Human Authorship Probability) is AnthroSeal’s main result. It expresses, as a percentage, the probability of human authorship of the analysed content. It is calculated from the signals obtained during the multi-layer audit: provenance, AI patterns and originality or artificial synthesis depending on the file type. The higher the HAP, the stronger the technical evidence compatible with human authorship. Each audit level — Bronze, Silver or Gold — applies its own minimum threshold to consider the audit passed.

Bronze (85 %) — “I want to know”
Whether a file shows signals compatible with human authorship.
If the audit is favorable and the format allows it, you receive a technical report and an AnthroSeal deliverable with a visible seal and an invisible technical mark detectable by our system.

Silver (92 %) — “I want to demonstrate”
That this file has passed an AnthroSeal audit and leave pseudonymous traceability on blockchain.
Includes the above and, if the audit is favorable and the layer is operational, may add a pseudonymous record without publicly linking the result to your civil identity.

Gold (96 %) — “I want to attribute”
That file and its evidence to a verified identity.
Includes the above and, if the audit is favorable and the corresponding layers are operational, may add reinforced traceability linked to KYC identity.

The Personal, Pro and Advanced plans determine the available VATS and users. Bronze, Silver and Gold are selected for each file and determine the audit’s level of requirement and the type of evidence associated with that audit.

VATS are AnthroSeal’s internal credits. You can see the full explanation in the section “What are VATS and why do I pay with them?”

Yes. Each audit is independent and consumes VATS. If the system has updated its providers, weightings or technical criteria since the previous audit, the result may vary.

To compare results, you can use the asset library and the audited file verification service. This lets you review previous audits, locate their reports and check associated deliverables when available.

We do not store your original files. The system processes them during the audit and then discards them. What we do store is the cryptographic hash of the file — a digital fingerprint that allows the integrity of the result to be verified without keeping the original content — and the resulting report, available from your dashboard library during the retention period corresponding to your plan.

Only you. Your audit results are private and only accessible from your account. In Silver, the blockchain record is pseudonymous — with no personal data and no original file. In Gold, the cryptographic link between your verified identity and the audited file helps reinforce the traceability of your authorship.

The AnthroSeal report is a technical assessment tool that determines human authorship probability. It does not constitute definitive legal proof, official certification or an absolute guarantee of human authorship.

It may be used as complementary technical documentation in due diligence, compliance, trust & safety or internal review processes. For high-risk cases such as legal proceedings, hiring or insurance, we recommend additional human review.

AnthroSeal operates under Spanish law and European data protection regulations. We do not store original files, audit data has limited retention according to your account configuration and subscription plan, and you can request deletion of your data in accordance with applicable rights.

Users outside the EU are responsible for checking compatibility with their local legislation.

CLAP (Cross-Layer Audit Process) is AnthroSeal’s multi-layer audit process. It runs three independent layers: provenance, AI patterns and originality or artificial synthesis depending on the file type. Their results are processed to calculate the HAP (Human Authorship Probability).

ARES (Autonomous Research & Evaluation System) is AnthroSeal’s technical research and evaluation system. It analyses available providers, sensors and sources according to coverage, performance, cost, availability and suitability for each file type.

It also feeds ARES Arena, the broad ranking of providers evaluated by AnthroSeal. Not all evaluated providers are part of CLAP or executed in every audit.

Blockchain is a cryptographically protected distributed record infrastructure. AnthroSeal uses it in Silver and Gold audit levels, when the audit is passed, to immutably record a reference to the result and the audited file.

Original files are not stored on blockchain. In Silver, the record uses a pseudonymous reference. In Gold, a verified KYC identity reference associated with the result is added.

C2PA (Coalition for Content Provenance and Authenticity) is an open standard for describing the provenance and technical history of a digital file, such as an image generated, edited or captured by a compatible device.

AnthroSeal may use C2PA signals in layer C1 to analyse provenance, metadata and possible signs of modification. The presence or absence of C2PA is interpreted within the full audit.

AnthroSeal works with VATS, the platform’s internal credits. 1 VAT = €1.

Subscription plans determine the available VATS and the number of users in the account:
- Personal: 29 VATS per month, 1 user.
- Pro: 79 VATS per month, up to 3 users.
- Advanced: 159 VATS per month, up to 10 users.

Bronze, Silver and Gold are not subscription plans: they are audit levels selected inside the dashboard for each file. The selected level determines the HAP threshold, VATS consumption and, when traceability is operational, the associated record type.

Before starting an audit, your dashboard will show the applicable cost.

In beta, audio and video are processed as clips up to 30 seconds. The dashboard shows the applicable cost before starting the audit.

From your AnthroSeal account, using the payment methods available on the platform. You do not need a wallet, cryptocurrencies or blockchain knowledge to buy or use VATS.

Your available balance appears in your dashboard.

You can cancel your subscription at any time from your account. Cancellation prevents future renewals. Your reports remain visible in your account during the retention period corresponding to your plan.

VATS do not expire and remain available in your account for future audits.