1.1 Events. Online DB section
The online section of the service, where all the events around you are displayed in real time. Concerts, open air, promo. Here, businesses can place ads. An opportunity has been created for creative people to hold events and earn money from it.
1.2 Rent of villas, hotels, apartments
Inside DB, the choice of real estate for recreation is as comfortable as possible, in addition to reviews and photos, you can get real impressions by making a virtual tour.
1.3 Transport rental
In DB, you can rent not only a comfortable car, but also another, alternative form of transport, such as a yacht, private plane or helicopter.
We have collected all the places for users in one place. You can select by reviews, sort by rating.
But we went even further, without leaving your personal account, you can make an order, pay the bill and even call the waiter to the table.
A VR tour is also possible here.
1.5 Buying a property
Villas, apartments, land plots. Inside the DB, you can get expert advice and make a choice even if you:
1. Do not speak the language
2. You are on another continent
Take a VR tour.
1.6 Lawyer consultation
A separate section for users. Ask your question online. How to apply for a visa, insurance, register real estate and any other.
1.7 Red cross
For your convenience, we have placed the "Red Button" in a separate section. If you need help, you'll get it here.
The DB team has developed and implemented a number of services for creative people.
Job search, freelancing – only real numbers and verified employers.
Reward for helping the service.
1.9 Business opportunities
For a small subscription fee, business owners get all the tools in one box. On the DB, you can post up – to – date information about yourself-you don't need a site that receives additional traffic-reducing marketing costs. We don't care when you opened up. A business account is available for everyone.
The following section is created specifically for product manufacturers.
We have divided the store into two sections:
2. Major manufacturers
This arrangement will create a balance between small producers and large ones.
To the first category, we attributed crafts, paintings, all the handmade creative path that is sold in a piece version , as well as pastries, cakes and other things .
Summarizing a brief description of the DB services, we can distinguish the main groups of users of the platform:
• Travelers (booking hotels, transport, etc.)
• Local residents (monitoring current events, earning money on the service)
• Creative people (yoga, seminars, online streams)
• Businesses (restaurants, hotels, clubs, etc.)
• Product manufacturers
The benefits for each individual group are entertainment, earnings, and advertising.
We have considered only one part of the Double Bubble ecosystem, the traditional one, and we are smoothly approaching the part designed specifically to provide everything described above, the Double Bubble Blockchain.
2. Blockchain Double Bubble
Thinking about what new DB can bring to users, we could not pass by the technologies that " everyone has heard” for the last 5 years. Blockchain technologies are gradually entering our lives. For DB, we took the TOP-all the latest developments, adapted them to our tasks, and made the DB blockchain.
By combining new and traditional technologies, we have created a decentralized, secure system.
Next, we will look at how the interaction occurs.
2.1 Key features of the blockchain
As a basis, we used Substrate Polka dot. The Polkadot network protocol allows you to transfer any type of data, not just tokens – this solves the problem of decentralizing the service on users ' devices around the world.
A cryptographic protocol that uses public probabilistically verifiable zero-knowledge proofs.
The technology allows users to share verified information without disclosing it, or perform calculations with a third party without disclosing the calculations.
The service uses the YAL-STARK technology. Based on it, we have developed a number of technical solutions and applied them to our blockchain for the first time:
• Verifiable Delay Functions based on ZK.
• ZK-based bridges with ZK bookmark proofs.
2.2 Zero-Knowledge Scalable Transparent Argument of
• ZK order book with aggregation of liquidity from other blockchains.
In order to maintain a high level of security of the DB blockchain, not only at present, but also in the near future, we decided to use Postquantum Cryptography in our algorithms.
2.3 General structure
The DB network is a well-developed decentralized structure that uses disk mining to help the site work. It includes both standard Substrate Polkadot modules and modules designed specifically for the DB blockchain.
The payment method in the system is Double Bubble Coin (DBC)
2.4 Basic functionality
The DB service user interacts with the system via the blockchain.
• Authorization via the blockchain opens all accesses on the server.
• The block stores information about user profiles, and uses a private key to decrypt the information.
• Stores a list of validators and their rewards.
• Processes transactions
2.5 Control unit
The user controls the system, via the DB Wallet interface, and:
• edits your account and profile in the blockchain
• manages fashion
• enables and disables block validation
• manages distributed secure storage
2.6 DB Blockchain Modules
In this section, we will look at the interaction scheme and the main modules built into the DB Blockchain.