Proof of Existence Part 1 — Blockchain application on Multi-chain.

Sourabhh Sethii
DXSYS
Published in
1 min readJul 3, 2018

Let’s explore and build proof of existence or proof of Authenticity application on multi-chain blockchain.

Proof of Authenticity of a file or record on Blockchain, after submitting the form you would be uploading the file’s signature with it’s associated information into the private decentralized public ledger.

Records on the blockchain can later be fetched to prove that this file existed on specified date or time with metadata information.

POE Architecture.

Publisher or creator of the document would enter the details along with document, Client application generate SHA 256 Hash of the file and store it on blockchain network.

Verifying Authority would upload the document issued or provided by publisher on the client application, client application would calculate the hash of the file and verify with the hash available on the blockchain network for the particular file using Rest API’s.

Part 1: One would be able to understand about POE Proof of existence.

Part 2: One would be able to build application on Multichain Blockchain platform.

Conclusion : One would be able to understand about Proof of Existence application on blockchain network.

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Sourabhh Sethii
DXSYS
Editor for

I am an author of Building Digital Experience Platform and I am passionate about emerging technologies. https://sourabhhsethii.com/