Deep Dive into 4thTech Main Solution, Multi-Blockchain Data Exchange

The need for immutable, unmodifiable digital data file exchange is imminent. E-mail is not appropriate, non-secure and does not fulfil the task in question. Digital content can be created, edited, manipulated and exchanged very easily, which causes trust issues and slows down digital transformation, as organisations must still rely on intermediaries such as notaries. 4thTech is solving this challenge with its blockchain data exchange protocol or FOURdx.

*Read more at: https://wiki.4thtech.io/intro/discover.html#fourdx-data-exchange-protocol

Blockchain Data Exchange (i.e., FOURdx)

FOURdx is a distributed data file and metadata exchange framework built on public blockchains, enabling organizations and individuals to collaborate and exchange data in a secure and decentralised manner. It leverages trust sourced from the blockchain and provides a secure, immutable wallet A to wallet B (i.e., FOURwaL) data exchange. The protocol records only link to encrypted files and hashes of the encrypted content on the blockchain, which safeguards the rights of individuals to confidentiality and privacy. The protocol is capable of; (1) connecting senders and receivers using the FOURid mechanism; (2) exchanging metadata and data files; (3) performing eDelivery based on the current EU guidelines; (4) archiving securely encrypted digital data files, and (5) following the GDPR guidelines.

*Note: The FOURdx protocol is compatible with all the Ethereum based networks, additionally it supports HashNet, Polkadot Substrates & Solana.

Defines as:

decentralized network framework that supports any data file exchange between wallet addresses of supported blockchains (i.e. Ethereum, HashNet, Polkadot, Edgeware and Solana). Supported by a modern intuitive web platform and thanks to multi-chain support, the FOURdx is accessible and affordable to all users.

GDPR compliant application

As a result of extensive three years of legal and procedural GDPR research, the FOURdx can be recognised as a GDPR compliant application as no personal data is stored on-chain but resides off-chain. FOURdx records links to encrypted files and hashes of the encrypted content on the blockchain.

Advantages;

• immutable and permissionless blockchain used as a “trust” network;
• multi-chain deployment offers multiple interoperability options;
• private and public chain support;
• scalability with transaction speed up to 50.000 per second (e.g. HashNet, Solana);
• advanced encryption standard (i.e. AES), with a combination of RSA encryption algorithms;
• data file source authenticity and data integrity feature;
• digital data and documents audibility;
• digital data and documents delivery timestamp feature;
• local or decentralised cloud e-archiving options (i.e. planned to be developed).

*Note: While FOURdx leverages trust sourced from the blockchain to provides a secure, immutable wallet A to wallet B data file exchange, the 4thTech native wallet (i.e.FOURwaL) is needed. Designed specifically for this task, the FOURwaL shares the capability of handling not only cryptographic tokens but also data files and metadata.

The FOURdx data exchange process (simplified);

• the digital data are stored in the repository (currently limited to 20 MB file size);
• the user is provided with the “link” of the saved location;
• the JSON metadata file that includes the link is sent to the blockchain;
• the recipient can download the data file and decrypt it with his private key saved in the browser’s 4thTech wallet (FOURwaL).

*Explore FOURdx technical specs at: https://wiki.4thtech.io/intro/discover.html#the-fourdx-data-exchange-process-technical-reference

JSON metadata file structure includes;

• sender title;
• subject;
• content;
• link to the encrypted data file;
• calculated hash (i.e., checksum) of data file content.

The FOURdx smart contracts in production

• Ethereum 0x82cebDEabB79FdFaB70649834ddD85f42b6B9464 Link: https://etherscan.io/address/0x82cebDEabB79FdFaB70649834ddD85f42b6B9464
• Edgeware jM7MuqQNvUdg67hjf8g3WqB2VYEfWpojUsBpdsVT9uPBePU Link: https://edgeware.subscan.io/account/jM7MuqQNvUdg67hjf8g3WqB2VYEfWpojUsBpdsVT9uPBePU?tab=transfer

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