What is UDIN?

Unique Document Identification Number (UDIN) is a platform-based 25-alphanumeric system generated unique number for the documents attested by users/applicants in various domains. UDIN platform (https://udin.wb.gov.in/) is being developed by the Department of Information Technology and Electronics, Government of West Bengal.

The concept of UDIN has been implemented to secure transactions of various documents both self-attested and contractual from the citizens and retained under blockchain technology for a certain period of time. UDINis generated via its portal, where in the validity and authenticity of the attested document will be certified by the State Government, based on self-declaration.

Importance

1. It will remove the hassles that public may have to go through to upload the same set of documents at multiple platforms- thus creating a single stage verifiable document portal.
2. The government departments and agencies will not have to store the same documents at multiple levels, thus saving storage cost.
3. Because it is based on Blockchain technology, the documents so uploaded remain immutable, whereby no user can claim it to be false, thereby creating a sense of security for the parties involved.
4. A user can share the uploaded documents on multiple platforms by simply sharing the UDIN of the documents and providing the access to the same.

Features

• User will be registered through Aadhaar authentication process.
• The documents of the user(s), would be kept through the blockchain technology.
• Each document when downloaded will be signed digitally by authorized signatory from the Department of IT&E, Govt. of West Bengal.
• Charges are Rs.100/- for single party documents and Rs.500/- for contractual agreement for one year.
• Access to the uploaded document can be provided to any of the following users: (i) only owners, (ii) owners and government officials, and (iii) public.