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Integrative platforms—termed as 'bridges'—have emerged as the connective sinew between distinct blockchain networks. Each blockchain is governed by its unique set of protocols and lacks an inherent system for interaction with others. This scenario necessitates the development of bridges to foster communication and facilitate key operations like cross-chain asset transfers.

The existence of bridges in the blockchain ecosystem alleviates the risk of blockchain isolation. They serve as critical linkages that enable smooth asset and information transfers, thereby enhancing collaboration and accessibility to liquidity across blockchain networks. The indispensable role they play in amplifying cross-chain functionality makes them fundamental to the full-fledged realization of blockchain technology.

The popularity of bridge projects has been on an upward climb, corresponding with the continual emergence of new blockchains. The presence of bridges heightens the onchain user experience by providing a platform to operate across multiple blockchains. However, it is crucial to be cognizant of the inherent risks they carry—particularly lock-and-mint bridges, which due to their storage of extensive assets in their smart contracts, are subject to potential exploits.

Stargate

As the inaugural dApp built on LayerZero, Stargate is a prime example of an innovative bridge protocol. This composable bridge protocol streamlines the transfer and swapping of native assets between chains, minimizing both cost and hassle. Stargate is more than a bridge—it is a cross-chain liquidity network, anchored on LayerZero. It empowers users to transfer and receive native assets across differing blockchains without needing to engage or manage funds within a bridge. The protocol's governance is vested in the STG token, utilizing a vote-escrowed (ve) token model.

Stargate Finance expands this concept further. Constructed on LayerZero, the protocol was initially crafted as a bridge for stablecoins and popular assets on LayerZero-connected chains. However, the rising prominence of OFTs spurred a shift in direction. In December 2022, Stargate endorsed the inclusion of OFT tokens into its UI, imposing a 0.02% fee on all transfers.

Prior to Stargate's endorsement, OFTs could only be bridged through unique webpages tailored to each OFT. The addition of OFT transfers to Stargate presented users with a unified interface for all OFT bridge transfers. This addition to Stargate holds significant benefits for applications that adopt the OFT standard, as OFT tokens do not depend on Stargate’s liquidity network, thereby obviating the need for applications to invest resources in maintaining platform liquidity.

Stargate was designed to address the bridging trilemma by facilitating native asset swaps between autonomous blockchains within a single transaction. Its three fundamental tenets are: instant guaranteed finality, unified liquidity, and native asset transactions.

Stargate supports cross-chain value transfer using stablecoins and STG tokens. Liquidity providers deposit assets into individual pools for each bridge asset on every connected chain. Each pool has a remote balance that denotes the maximum funds that can be transferred from the source to the destination chain. Proportional adjustments to liquidity are enabled through varying weights for different pathways. The bridging algorithm maintains a proportional relationship between each remote balance and its respective asset pool, despite asset transfers. A potential drawback of the algorithm is the exhaustion of liquidity between specific pathways. Stargate, however, counters this through an equilibrium fee model, using a dynamic fee to promote liquidity along the pathways that need it most. Users contribute to this natural rebalancing process by paying higher fees along high liquidity pathways and earning rewards on low liquidity pathways.

Stargate, LayerZero's response to bridging, functions as an automated market maker (AMM) on the LayerZero protocol. While most bridges necessitate multiple steps, Stargate allows users to complete theprocess in a fraction of the time. Initially, speeds were slower, but substantial improvements have been realized over time.

Stargate is a testament to the capabilities of LayerZero, boasting native assets, instant guaranteed finality, and unified liquidity as key features. Native assets eliminate the requirement for wrapped or synthetic tokens, further simplifying the process and reducing unnecessary steps. Instant guaranteed finality ensures that transactions won't be reversed due to inadequate liquidity on the destination chain. Lastly, unified liquidity refers to the presence of a single pool of liquidity rather than separate pools on each chain. This not only bolsters capital efficiency but also streamlines the process of scaling the growth of available liquidity.

In summary, blockchain bridges such as Stargate represent a significant step forward in blockchain technology, overcoming previous limitations and facilitating seamless, efficient cross-chain transactions. Through integrative platforms like Stargate, the digital assets market is well-poised for continual growth and innovation. The potential of such platforms is vast, promoting not only inter-chain communication and collaboration but also the development of a more inclusive and versatile blockchain ecosystem.

Usage

From February to April 2023, Stargate experienced a remarkable surge in transfer volumes—a leap from $300 million to $2.2 billion.  Arbitrum contributed significantly to this upswing. The activity on Stargate can be attributed to two pivotal events—the ARB airdrop and the rising conjecture around a possible Layer Zero airdrop. We can see transactions spike over the last quarter, presumably due to airdrop farmers.

The ARB token's introduction in March ignited the increase in Stargate's activity. As Stargate operates atop Layer Zero, users may have pursued farming activities—engaging with the product in anticipation of potential airdrop rewards. This assertion is supported by the 55% decrease in average transfer size across all chains from February to April 2023, the 30-fold augmentation in active users over the past 90 days, and the heightened transfer volume in low-fee environments such as Fantom and Avalanche.

Stargate demonstrated a robust user retention rate, with 52% of its March 2023 users continuing to use the bridge in April 2023. The interplay of the Arbitrum airdrop and the speculation around a potential Layer Zero airdrop significantly propelled bridging activity on Stargate. The rising transfer volumes over the past couple of months are an indicator of positive user retention. Scrutiny of the transfer patterns across multiple chains reveals that about 52% of users who engaged in transfers in March sustained their activity in April. Moreover, the median user in April executed three transfers, while users in the third quartile made six transfers.