Tonana data & liquidity transfer protocol

Inspiration

A blockchain bridge is a system that allows users to transfer assets and data between different blockchain networks – for example, Ethereum and Polkadot or Polygon and Avalanche. By default, independent blockchains can’t directly ‘talk’ to each other. They are like people who speak mutually unintelligible languages. Different networks use different consensus algorithms, smart contract architecture, address formats, and so on. Our inspiration was to help different blockchains and ecosystem with communication between smartcontacts and make them transfer data.

What it does

Tonana bridge already help 5 ecosystems to communicate with each other. As for now it's possible to swap native assets as well as wrapped.

How we built it

​On each chain, there are Multi-signature Exchange Wallets, which store reserves of coins for cross-chain exchange. At the same time, there is more than one independent Tonan Bridge instance with off-chain logic for validating cross-chain transfer requests. At the moment when the user has successfully sent his funds to the Wallet of the Exchanger on one blockchain, and his transaction has passed multiple verifications by the bridge authorities, the funds are transferred to the second blockchain. Tonana cross-chain bridge uses a lock-and-mint model for moving value between chains. Here's how that works in practice:

1. Alice sends units of Token A to a specific address on the source chain (e.g. Ethereum) and pays the transaction fee.
2. Alice's Token A is locked up in a smart contract by a trusted validator or held with a trusted custodian.
3. Equal units of Token B are minted on the destination blockchain (e.g. Polygon).
4. Alice receives Token B in her wallet address and can freely use it to execute transactions on the new blockchain. ## Challenges we ran into Covalent (RPC-provider for Aurora) has hidden needed data for processing of transaction we need. "input trx hex" ## Accomplishments that we're proud of We already received a grant from TON and Near ecosystem Our wrapped assets ( wNear, wSol, wAtom, wTon) are used on two DEX in TON ecosystem.

What we learned

Aurora EVM during this hackathon. How to build a swap, bridge. DeFi maintenance. Business process deliveries.

What's next for Tonana data & liquidity transfer protocol

Tonana v2 is providing decentralized solution for the bridge. The solution to the problem is to create a highly secure decentralized system of cross-chain bridges for the free movement of digital assets between networks.

Built With

• aurora
• cosmos
• covalent
• heroku
• near
• node.js
• solana
• ton
• typescript