Document archival on blockchain

I need a preliminary analysis on the best approach to build a web app that takes a document from the user and save this document (original, updates and versioning) on secure blockchain repository.

The web app accepts pdf files only and save them for later retrieval (after one year or many years). Users who saved their files can retrieve them and update them also using their accounts.

I need a blockchain professional to give me a concise analysis on the best approach to build this technology and how to implement it best.

The selected freelancer can also build the app later on or will be hired to advise on the selection of a freelancer (team) to build it.

Kemahiran: Blockchain

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Tentang Majikan:
( 2 ulasan ) montreal, Canada

ID Projek: #26545850

6 pekerja bebas membida secara purata $571 untuk pekerjaan ini

(55 Ulasan)

Hi, We are Votan Ventures, We've helped more than 50 companies create their products on blockchain and webdesigning. We will provide you an end to end solution for your requirements along with a full team support for p Lagi

$750 CAD dalam 7 hari
(1 Ulasan)

Hi, I've already built a similar solution and can demo and discuss the technical details. I’m the Co-Founder & CTO of - [login to view URL] - an end-to-end Blockchain solutions (across a range of Web & Mobi Lagi

$475 CAD dalam 7 hari
(2 Ulasan)

HELLO, Hope you are doing well. I read through the project details extremely carefully and I am absolutely sure that I can do the project very well. In the past 8 years. I was actively working on development and integr Lagi

$500 CAD dalam 23 hari
(0 Ulasan)

We are Tedx infotech a promising IT software development company. We are expert in .NET, PHP, JAVA, Android & iOS, blockchain with 3+ years in Mobile Application Development field, and also, almost 5+ years in Website Lagi

$500 CAD dalam 20 hari
(0 Ulasan)

Hi, Do you need a community marketing manager for your project? I have 3 years of experience in ICO. Crypto Exchange/DEX Platform and NFT project. - Add active and real members on telegram for $0.10 per member. We ca Lagi

$500 CAD dalam 7 hari
(0 Ulasan)