Graviton.One
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Graviton.One

Graviton: A Review of Bridge Integrations

Graviton intends to incorporate the best existing bridge solutions in order to maintain an abundant infrastructure for inter-chain farming. In this write-up, we review the range of possible initial bridge integrations for Graviton.

Any integration-agnostic system, such as Graviton, is neatly positioned at a crossroads of opportunity. External integrations arise, develop, and become obsolete, and a flexible approach towards connectivity allows systems that adhere to agnostic principles to easily retain relevancy, ensuring sustainable expansion. Recognizing the importance of diversifying the selection of integrated inter-chain solutions, Graviton, from the very beginning, is intended as a bridge-agnostic project that incorporates a multitude of trustless bridge providers, such as Gravity SuSy, multichain.xyz, and RenVM. Due to its blockchain- and bridge-agnostic approach, Graviton is set to become a universal hub for inter-chain liquidity and market activity.

Interchain DeFi’s expansion spawned a plethora of gateways and bridges, i.e. Bridges from Binance Smart Chain, the Wormhole bridge from Solana, or cross-chain swap-focused projects like multichain.xyz, RenVM, and Gravity protocol. Bridges are a necessary component in multiple subsystems of Graviton. As a liquidity incentivizer for wrapped assets, Graviton needs to leverage one or a number of gateway solutions that can issue wrapped tokens in a target chain by locking tokens in an origin chain.

Another application of bridges is facilitating the expansion of GTON, the governance token of Graviton, to multiple ecosystems. At the beginning, GTON will be minted on the Fantom blockchain. At a later stage, by using multichain.xyz, Gravity SuSy, or other bridges, the holders of GTON will be able to wrap it into other blockchain networks, such as BSC, Ethereum, Heco, Waves, Avalanche, and Solana, with an ability to select bridges that correspond to their use case and ecosystem preference. Initially all blockchain networks connected to Gravity or Multichain.xyz will be usable as either origin or destination chains for issuing wrapped tokens by locking the origin chain’s assets in bridges, but in principle, Graviton can integrate any kind of inter-chain gateway infrastructure.

Gravity (SuSy)

Gravity, a blockchain-agnostic oracle system developed by the team behind Graviton, provides tools for establishing cross-chain communication. Gravity makes no attempt at solving applied problems of inter-chain communication, such as, for example, transferring a token from one blockchain to another. However, as a trustless and decentralized solution, it can be a reliable foundation for inter-chain applications.

SuSy is a protocol that extends Gravity by describing a set of principles for implementing cross-chain transfers of tokens in blockchain networks that supports smart contracts. SuSy is centered exclusively around technical implementation of transfers, without bringing any incentive models for those who issue wrapped tokens and provide liquidity.

SuSy gateways operate through a system of smart contracts that verify specific transactions in both blockchain networks, with the participation of oracles, which play the role of intermediaries in the transfer of signals from one blockchain to a smart contract of another.

The SuSy protocol is based on trust in the oracle, which is an intermediary in the transfer of information from one blockchain to another. From a technical standpoint, when implementing the oracle as a trustless decentralized system, which is what the Gravity protocol does, cross-chain gateways on top of it inherit the trustlessness. Another feature of the SuSy protocol implementation over the Gravity oracle protocol is the presence of useful high-level abstractions and services. All these factors make SuSy an outstanding bridge solution for Graviton.

Multichain.xyz

In addition to reusing our SuSy gateways between Waves, BSC, Heco, and Avalanche, we aim to utilize other cross-chain gateway solutions that meet our technical requirements, such as multichain.xyz, a bridge enabling bi-directional token transfers derived from AnySwap. The synergistic collaboration with multichain.xyz represents our strive towards a more decentralized approach in supporting swaps between EVM-based chains.

At its core, multichain.xyz reuses and extends Anyswap. Anyswap is a fully decentralized cross chain swap protocol, based on Fusion DCRM technology. To integrate a support for a new chain, Anyswap needs to implement an oracle and provide support for the blockchain’s private key encryption algorithm. At this moment, Anyswap enables swaps between tokens on blockchains that use ECDSA as a signature algorithm, i.e. blockchains like Bitcoin, EVM-chains, and Fusion.

Multichain.xyz uses its own set of Anyswap contracts/infrastructure with a focus around the Fantom ecosystem. At the same time, Multichain.xyz reuses old Anyswap bridges and its bridges are also available to Anyswap.

RenVM

RenVM is an open protocol providing access to inter-blockchain liquidity for decentralized applications.

RenVM project is in the most promising class of cross-chain communication algorithms based on Zero-Knowledge (ZK) and secure multi-party computation (MPC) technology, combined with the Byzantine fault tolerant (BFT) consensus mechanism. Such an architecture, represented by a set of validators (darknodes), allows for cross-chain exchange of any information and for making transfers and other transactions supported by blockchain networks, even those which do not provide smart contract functionality. All interactions within target chains occur through one single account in each network, while the Secure MPC technology ensures a safe storage and transfer of data through Shamir’s secret sharing.

The solution is already in operation providing cross-chain transfers between the most popular blockchain networks, with BTC, BCH, and ZEC available on Ethereum.

Solana’s Wormhole

Wormhole is a bidirectional, decentralized bridge between Ethereum and Solana that allows swapping of tokens from ERC-20 to SPL-based token standard (Solana Program Library) and back. Wormhole relies on consensus and finalization of the chains that it connects with each other.

In order to achieve consensus, Solana employs a concept of guardian nodes. After registering an on-chain event, guardians need to sign a Validator Action Approval (VAA). If the majority of all nodes have registered and signed an event, then it becomes valid on all Wormhole contracts on all chains and triggers an issue/burn. Wormhole uses a plain M/N multisig scheme with secp256k1 signatures, a standard primitive in cryptography.

Solana’s Wormhole underwent an in-depth security audit for ETH, and in the coming weeks will be adding support for Terra, which will make Wormhole a 3-way cross-chain bridge.

Different gateway solutions have their own advantages and disadvantages, and vary in the level of decentralization, supported blockchains, community support, and fees. Therefore, leveraging a range of gateway providers guarantees stability and flexibility for Graviton.

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Graviton

Graviton

a liquidity enhancing protocol providing relay swaps infrastructure and farming solutions. For the GTON Capital concept head over to mirror.xyz profile.