The Blockchain-based Service Network
Your Business Pre-Tac Solution Partner.
A cross-cloud, cross-portal, and cross-framework global public infrastructure network
used to deploy and operate all types of blockchain distributed applications (DApps).
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Pretac Tag (Blockchain)
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“The whole point of using a blockchain is to let people — in particular, people who don’t trust one another — share valuable data in a secure, tamperproof way.” — MIT Technology Review
This MIT Technology Review statement is somehow tricky and can be considered as a half-truth. This is because not all blockchain systems are the same and simply using a “blockchain” does not solely guarantee that we are in the presence of a tamper-proof solution. Usually, enterprise focused blockchains come with a ‘blockchain hook’ for advertising, but in the background, they do not differ much from a traditional centralized database or any cloud service.
How is this possible? Let’s go through a few blockchain basics for some clarification and trying to keep definitions as simple as possible.
Ref : https://authena.io/blockchain/
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Pretac Mall
ButtonBuy and sell your addressing related products and services .
Banking is only the beginning: 65 big industries blockchain could transform !
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DID Services
ButtonDecentralized identifiers (DID) has shown great potential for sharing user identities across different domains and services without compromising user privacy. DID is designed to enable the minimum disclosure of the proof from a user's credentials on a need-to-know basis with a contextualized delegation. Read more ...

A Proven Approach
We start by clarifying our Innovative structure and explaining the different ways we can help. Then we analyze your goals and compare them to your current scenario. Then we recommend our Pretac designed to meet your target.