token-erc-721

Land Registry First Registration - NFT (Hyperledger Fabric)

Smart Registration

This POC mimics a real world use case of first registration of land. Since a land parcel is a physical asset it can be represented by an NFT.

Today during first registration of land a land parcel is identified by a unique parcel identifier UPI. Before a land title can be issued to a citizen it must pass through several approval processes by several entities. These entities are registered as participants on this platform and the parcel ownerships is transferred to each entity once approved.

An example of the flow of a parcel during registration is:

• enumerator -> surveyor -> planner -> clerk -> citizen

Approvals are recorded on the blockchain as the assets change ownership, Rejections are recorded as the token is burned.

In the final step each NFT still active is transferred to a citizen.

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Architecture

This POC creates a permissioned blockchain network consisting of

• 1 orderer
• 2 organisation peers
• 2 organisation CA

Each CA manages participants within each organisation

• CA-Org1

  • administrator
  • minter

• CA-Org2

  • surveyor
  • planner
  • clerk
  • citizen1
  • citizen2
  • citizen3

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Setup

Install project dependencies

curl -sSL https://bit.ly/2ysbOFE | bash -s

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NFT (Land Parcels) mint -> approve -> transfer -> issue title

Demo

End to end demo

sh run-demo-end-to-end.sh 

OR

Shell 1 - (Admin) Launch blockhain platform

sh run-1-admin-setup-deploy-cc.sh

Shell 1 - (Admin) Register and enrol the mint

sh run-2-org1-admin-enroll-minter-in-ca.sh

Shell 1 - (Admin) Register and enrol the participants

sh run-3-org2-admin-enroll-participants.sh

Shell 2 - (Mint) Create 5 NFTs representing 5 parcels

sh run-4-org1-minter-invoke-mint-nfts.sh

Shell 2 - (Mint) Transfer 5 NFTs to Surveyor

sh run-5-org1-minter-invoke-transfer-to-surveyor.sh

Shell 3 - (Surveyor) List current NFT owners

sh run-6-org2-surveyor-query-owner-of.sh  

Shell 3 - (Surveyor) Transfer 4 NFTs to Planner, Reject 1 (Burn it)

sh run-7-org2-surveyor-invoke-transfer-to-planner.sh 

Shell 4 - (Planner) Transfer 3 NFTs to Clerk, Reject 1 (Burn it)

sh run-8-org2-planner-invoke-transfer-to-clerk.sh 

Shell 4 - (Clerk) Transfer 3 NFTs to 3 Citizens (1 each) i.e. issue proof of title

sh run-9-org2-clerk-invoke-transfer-to-citizens.sh`````

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Credits

🙏 This project is a fork of hyperledger fabric SDK see docs/README.md

https://hyperledger-fabric.readthedocs.io/en/release-2.2/

base version :

curl -sSL https://bit.ly/2ysbOFE | bash -s