Blockchain and combating document fraud: a technological response to the legal challenges of authenticity
In a context where digital documents circulate extensively, document fraud has become a systemic risk for businesses. Fake identity documents, falsified IBANs, manipulated bank statements, counterfeit insurance certificates... These malicious practices jeopardise the legal security of transactions and trust between partners.
Faced with this threat, blockchain technology has emerged as a disruptive force. Thanks to its decentralised, immutable and transparent architecture, it can be used to certify the authenticity of documents and guarantee their integrity over time. Every document recorded on a blockchain is time-stamped, encrypted and made tamper-proof.
In the banking and insurance sector, these obligations are all the more important given that the DORA regulation imposes an information security policy that guarantees, in particular, the authenticity, integrity and confidentiality of customer data and documents.

Practical applications
- Verification of identity documents in KYC (Know Your Customer) processes.
- IBAN certification in business-to-business payments, combating ‘fake president’ fraud.
- Certification of insurance certificates (proving that a PDF certificate is an original).
- Traceability of contractual exchanges on service platforms.
- Creation of unalterable logs and audit trails.
Blockchain also makes it possible to detect invisible alterations: any modification to a registered document is immediately detectable, as it breaks the hash chain. It thus offers complete traceability, which is useful in the event of a dispute or audit.

Tediji's Certification module allows creators, authors and lawyers to easily submit the works they wish to protect manually, at a price that is unmatched by the competition.
But Tediji and its APIs also make it possible to automate these certification procedures by systematically time-stamping all productions generated by the company's tools. Why only timestamp the final versions of your models and designs or the latest version of your patent application, when we can timestamp all the projects and drafts you have created over months for the same price, every time you click the save button in your tools? The creator does not have to do anything, but the legal coverage is much more comprehensive.

Greater trust from your customers and partners
Using a document certification solution is also a selling point. At a time when hacking and identity theft are rife, your prospects will prefer to choose a bank or insurance company whose documentation can be verified for authenticity and origin, rather than an institution that could potentially be the target of phishing attacks by cybercriminals.
A powerful probative tool
By combining blockchain and qualified electronic signatures (compliant with eIDAS regulations), companies can produce documents with enhanced legal value that are enforceable in court. This approach reduces the risk of falsification, identity theft and document fraud.
Towards proactive compliance
In an increasingly demanding regulatory environment (DORA, GDPR, AML-CFT, eIDAS), blockchain enables legal professionals to adopt a proactive stance: securing document flows, anticipating risks and strengthening the compliance of internal processes.
FAQ — Fighting document fraud
What types of document fraud can blockchain help prevent?
Blockchain helps combat false identity documents, falsified IBANs, manipulated bank statements, counterfeit insurance certificates, and more broadly any attempt to falsify digital documents.
How does blockchain detect that a document has been altered?
Any modification to a registered document is immediately detectable because it breaks the hash chain. Even invisible alterations are instantly detectable by comparing the document against its original fingerprint anchored in the blockchain.
Is blockchain certification compatible with DORA regulatory requirements?
Yes. In the banking and insurance sector, the DORA regulation requires an information security policy guaranteeing the authenticity, integrity and confidentiality of client data and documents. Blockchain certification directly meets these requirements.
Is it possible to automate the certification of all documents produced by my organisation?
Yes. Tediji's APIs allow certification to be automated by systematically timestamping all outputs from the company's tools, with no manual action required from teams.
Is document certification compatible with GDPR and AML regulations?
Yes. In an increasingly demanding regulatory environment (DORA, GDPR, AML, eIDAS), blockchain allows organisations to adopt a proactive stance: securing document flows, anticipating risks and strengthening internal process compliance.