What is a Certain Date and Why Does it Matter?
The certain date is the irrefutable proof that a document existed at a specific moment. In the legal realm, it is fundamental to demonstrate the priority of a contract, agreement, or any important document.
Without a certain date, a contract can be challenged. A third party could claim that the document was created or modified after the facts. This is especially critical in disputes over:
- Service contracts
- Non-disclosure agreements (NDA)
- Sales contracts
- Intellectual property documents
Traditional Methods vs. Blockchain
Traditionally, the certain date is obtained through:
- Public notary: Expensive ($50-200 per document) and requires an in-person appointment.
- Certified mail: Slow (days) and limited to physical documents.
- Property registry: Only for certain types of documents.
Blockchain certification removes these barriers:
- ⚡ Instant: Confirmation in ~1 second.
- 💰 Affordable: From $0 (free plan) to $0.01 per document.
- 🔒 Private: Your document never leaves your device.
- 🌍 Global: Valid in any jurisdiction that recognizes digital evidence.
How Blockchain Certification Works
- You upload your document: The file is processed locally in your browser.
- A SHA-256 hash is calculated: A unique and irreversible digital fingerprint.
- It is recorded on the Kaspa blockchain: The hash is permanently etched.
- You receive a PDF certificate: With a verifiable transaction ID.
The original document never leaves your device. Only the hash is stored, ensuring total privacy.
Legal Validity of Blockchain Certain Date
In many countries, including Spain and most of the EU, electronic evidence is admissible in judicial proceedings (eIDAS Regulation). The blockchain certificate acts as a technical proof that demonstrates:
- That the file existed on the indicated date.
- That it has not been modified since then.
Start Certifying Now
Try our free certification service. Upload your contract and obtain a certain date in seconds, without registration or credit card.
