Decentralized Land Registry

Block Foundation Smart Contract Series [Teal]

Contents

• Introduction
• Colophon

Welcome to the Decentralized Land Registry project, an open-source venture that aims to redefine land transactions with the power of blockchain. Leveraging advanced blockchain technology, this project introduces an innovative way to manage and conduct land transactions transparently, securely, and efficiently.

Introduction

The traditional land registry systems are often fraught with inefficiencies, potential for fraud, and lack of transparency. Our solution, a blockchain-based land registry, addresses these issues head-on by providing an immutable and public record of land transactions, drastically reducing the potential for fraud and manipulation. By combining cryptography and consensus algorithms, blockchain technology ensures that once data is added to the blockchain, it is virtually impossible to change.

This is an example of a smart contract for a land registry system where an owner can register their land, update the land details, and even transfer ownership in a secure way. This contract makes land transactions more transparent and trustworthy.

The primary functionalities include:

1. Registration: When a user first registers a parcel of land, they are recorded as the owner of that parcel in the global state of the smart contract.

2. Land Update: The owner can update the details of their registered land. Any updates are recorded in the global state, ensuring that a history of changes is kept.

3. Ownership Transfer: If the owner decides to transfer their land, the contract allows for a seamless and secure transfer of ownership.

This Decentralized Land Registry project is set to revolutionize how we view land transactions, bringing about a new level of transparency and security. We're excited to embark on this journey towards a more efficient, reliable, and secure system for land transactions, and we warmly invite you to explore, contribute, and grow with us in this endeavor.

Quick Start

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Contract

This PyTeal code defines a basic smart contract for a land registry. The contract allows an "owner" (the account that created the contract) to update a "land" global variable. Any other account that tries to call the contract will have their transaction rejected.

Please note that this is a simplified example and may not cover all potential security vulnerabilities or complex needs of a real-world land registry system. The contract code should be audited by a professional before being used in a production environment.

• This ccontract has a transfer_ownership function that allows the owner to transfer ownership of the land to a new owner.
• The owner can call the contract with the first argument as update_land, followed by the new land details as the second argument, and the landID as the third argument to update land information.
• The owner can also call the contract with the first argument as transfer_ownership, followed by the new owner's address as the second argument to transfer the ownership.
• Non-owner transactions are still rejected.

Development Resources

Other Repositories

Block Foundation Smart Contract Series

| | Solidity | Teal | | --------------------------------- | ----------- | ----------- | | Template | >>> | >>> | | Architectural Design | >>> | >>> | | Architecture Competition | >>> | >>> | | Housing Cooporative | >>> | >>> | | Land Registry | >>> | >>> | | Real-Estate Crowdfunding | >>> | >>> | | Rent-to-Own | >>> | >>> | | Self-Owning Building | >>> | >>> | | Smart Home | >>> | >>> |

Colophon

Authors

This is an open-source project by the Block Foundation.

The Block Foundation mission is enabling architects to take back initiative and contribute in solving the mismatch in housing through blockchain technology. Therefore the Block Foundation seeks to unschackle the traditional constraints and construct middle ground between rent and the rigidity of traditional mortgages.

website: www.blockfoundation.io

Development Resources

Contributing

We'd love for you to contribute and to make this project even better than it is today! Please refer to the contribution guidelines for information.

Legal Information

Copyright

Copyright © 2023 Stichting Block Foundation. All Rights Reserved.

License

Except as otherwise noted, the content in this repository is licensed under the Creative Commons Attribution 4.0 International (CC BY 4.0) License, and code samples are licensed under the Apache 2.0 License.

Also see LICENSE and LICENSE-CODE.

Disclaimer

THIS SOFTWARE IS PROVIDED AS IS WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR NON-INFRINGEMENT.