Yes. When a paper contract is signed it is not very frequent to sign all the pages (at most a visé is made). Neither is it verified that all copies are identical word by word, nor does a calligrapher take part to verify that the signature made corresponds to the one that appears in the identity document (so we just trust that the graph corresponds to the author’s signature). Sometimes we do not have a copy of an identity document that allows us to check the signature later (so if someone replaces the signed document in the file with another, we cannot verify it); nor do we have an evidence of the time at which the document was signed (if the validities and deadlines are important).
With Evicertia, not only the entire content and annexes are signed electronically, but also:
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Public and private key cryptography (RSA) is used to check the integrity;
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Recognized electronic signature certificates and signature creation secure devices are used to provide authenticity;
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Time stamps of recognized authorities, which are synchronized with the official time, are used to date safely;
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The mass registration and long-term signature of all traces and associated events are made (e.g. the moment in which the signature request is delivered, the device or browser model from which it is signed, the moment in which the document is read, the time it takes to be read…);
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Experts and public notaries take part, who generate expert evidence and periodically test the system, which is duly protocolized and therefore can determine in a future how it worked.
All these evidences are kept in long-term secure electronic custody systems together with the validation mechanisms, and they do not depend on a single physical and vulnerable element such as paper.
These are some examples of additional security measures. All this allows you to detect any minimal change in any signed content, verify the authenticity of the document, and even check that there has been a clean and flawless consent process;