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Synapse is an interoperability protocol facilitating secure data transmission and asset swaps across multiple blockchain ecosystems. The project, whose founders remain undisclosed, employs a stableswap algorithm and optimistic verification model to enhance cross-chain compatibility. Its native SYN token has a capped maximum supply of 250,000,000 coins and supports governance within the decentralized Synapse DAO.
Synapse (SYN) functions as an interoperability protocol built to facilitate the safe and secure transmission of arbitrary data between blockchains. It enables users to swap and transfer assets across a variety of ecosystems, spanning layer 1, layer 2, and sidechain networks. The project seeks to enhance inter-blockchain compatibility by making asset movement between networks more efficient. To maintain transaction prices, liquidity pool balances, and slippage while securely moving assets across different ecosystems, Synapse employs a stableswap algorithm.
The Synapse ecosystem consists of six components: the Synapse Bridge technology, the cross-chain AMM, aggregative cross-chain communication, the SYN token, the Synapse Chain, and optimistic security approaches.
Through its generalized messaging system, Synapse allows any arbitrary data to be sent across chains seamlessly and securely. This means applications do not need separate deployments on multiple blockchains; instead, they can reside on a single chain and communicate with others to provide a consistent user experience from one central application layer. This generic message passing also supports smart contract calls, allowing smart contracts on different chains to interoperate easily.
The Synapse Bridge enables users to safely swap on-chain assets across more than 15 EVM and non-EVM blockchains. It supports two bridging methods: Canonical Token Bridging, which involves bridging wrapped assets across chains, and Liquidity-based Bridging, which handles native assets via cross-chain stableswap pools.
Synapse Chain is an Ethereum-based optimistic rollup intended to act as a sovereign execution environment for cross-chain use cases. According to the project, it will provide developers with a generalized smart contract interface to build natively cross-chain applications using Synapse’s messaging system. Apps built on Synapse Chain will be able to run their business logic on any blockchain.
Synapse is compatible with multiple EVM-compatible blockchains and integrates with nearly 18 layer-1 and layer-2 chains. These include Ethereum, Optimism, Arbitrum, Harmony, Avalanche, Polygon, Moonbeam, Fantom, and BNB Chain.
Synapse, headquartered in Singapore, does not publicly disclose its founders, co-founders, or team members. Nevertheless, the core team maintains an active presence on Twitter under the handles AureliusBTC, Socrates0x, Caesar0x, and Trajan.
Max Bronstein assumed the role of COO at the protocol in March 2022. Previously, Bronstein contributed to the crypto startup Dharma, where he helped construct the initial DeFi lending markets. He was also among Coinbase’s earliest investors and assisted in the platform's development.
The project originated as Nerve Finance, which was the first stableswap AMM on the BNB Smart Chain (BSC). In August 2021, it rebranded to Synapse Protocol and adjusted its business model, while retaining major investors such as Three Arrows Capital, CMS Holdings, Alameda Research, Immutable Capital, Primitive Ventures, DeFiance Capital, and Mechanism Capital.
Governance of the protocol is managed by the Synapse DAO, a decentralized collective of SYN holders. These community members guide the protocol’s evolution by participating in governance activities and casting votes.
Synapse Chain is constructed as an Optimistic Rollup, which provides these advantages:
Synapse (SYN) acts as the native token driving the platform’s ecosystem. It has a capped maximum supply of 250,000,000 coins and a total supply of 192,696,599 coins. As of March 2023, the circulating supply stands at 139,773,376 SYN.
The tokenomics are designed to reward users who engage with the ecosystem. Participants can swap two cross-chain assets across different networks: nUSD and nETH.
SYN tokens fulfill several roles, such as:
As of March 2023, you can purchase Synapse (SYN) on major cryptocurrency platforms including Binance, Coinbase Exchange, Kraken, KuCoin, SushiSwap, PancakeSwap, Gate.io, Huobi, Uniswap, Bitget, BKEX, LBank, MEXC, Phemex, CoinEx, BitMart, Bitrue, BTCEX, and XT.COM, among others.
Take a closer look at web 2.0 vs web 3.0.
Synapse employs an optimistic verification model drawn from Celo’s Optics protocol.
Cross-chain bridge security generally falls into three categories: locally verified, where only participants in a specific interaction validate transactions; natively verified, where validators on both involved blockchains confirm the message; and externally verified, which uses a separate set of validators to check cross-chain transactions.
Despite these frameworks, many current bridges function essentially as basic multi-sig consensus schemes to prioritize speed. While this approach offers fast finality, it introduces security risks. As highlighted by the Interoperability Trilemma, tradeoffs are unavoidable in cross-chain communication. Prioritizing speed over security has led to numerous bridge hacks, resulting in cumulative losses exceeding $500 million USD.
Optimistic verification adapts concepts from optimistic rollups by assuming transactions are honest by default. A network of off-chain actors is tasked with submitting fraud proofs within an optimistic window to block any fraudulent activity. This structure significantly enhances security, making attacks far more expensive than with traditional M of N mechanisms. While externally verified systems depend on an honest majority, optimistic verification requires only a single honest verifier. For an attacker to succeed, they must compromise all N actors rather than just M, causing the cost of attack to become unbounded as the number of fraud watchers grows. The primary tradeoff for this increased security is latency.
Four off-chain actors maintain the security of Synapse’s optimistic verification:
Max Bronstein