Orbiter Finance

Orbiter Finance is a decentralized cross-chain bridge that uses a maker/taker liquidity model backed by zero-knowledge cryptography to move native assets across more than 80 blockchain networks—including Solana—in 10 to 20 seconds without issuing wrapped tokens.

Core Mechanism

Unlike traditional lock-and-mint bridges that hold funds in a smart contract on the source chain, Orbiter operates through externally owned addresses (EOAs). When a user initiates a transfer, they send funds directly to a whitelisted liquidity provider called a Maker. The Maker holds pre-positioned assets on the destination chain and immediately releases matching funds from their own address. The transfer amount encodes a destination-network identification code in its last four digits, letting the Maker detect the intent without any smart contract intermediary on the source side.

This design eliminates a key attack surface: there is no multi-million-dollar contract pool to drain on the originating chain.

The system operates optimistically—transactions are assumed valid unless challenged. Three smart contracts underpin the security layer:

• MDC (Maker Deposit Contract): Holds Maker margin deposits. If a Maker fails to deliver, the MDC compensates the sender automatically.
• EBC (Event Binding Contract): Verifies that a source-chain deposit maps to a valid destination-chain transfer.
• ZK-SPV (Zero-Knowledge Simple Payment Verification): Uses ZK proofs to authenticate transaction existence, timing, and rule compliance without requiring a full node, enabling trustless arbitration across heterogeneous chains.

Supported Networks and Assets

Orbiter supports 84 mainnets spanning multiple virtual machine types: EVM-compatible L2s (Arbitrum, Optimism, Base, zkSync Era, Linea, Scroll, Polygon zkEVM, Mantle), Bitcoin-native chains (Rootstock, Merlin, Bitlayer), SolanaVM networks (Solana and Sonic SVM), StarkNet's CairoVM, Sui, TON, Tron, Fuel, Eclipse, Movement, Immutable X, Hyperliquid, and Aptos. The five core bridgeable assets are ETH, USDC, USDT, DAI, and WBTC.

For Solana specifically, users can bridge in from Ethereum L1 and any of the supported L2s, accessing Solana DeFi liquidity without leaving Orbiter's interface. The JavaScript SDK includes native Solana transaction support.

Fee Structure

Fees have two components. The withholding fee is a fixed per-transaction cost covering destination-chain gas, ranging from roughly $0.50 to $5 depending on the target network. The trading fee is percentage-based, typically 0.03%–0.30% of the transfer amount after the withholding fee is subtracted. By routing through Maker EOAs rather than smart contracts, gas consumption is approximately 21,000 gas on L2-to-L2 routes, significantly below the 120,000–450,000 gas typical of conventional bridge designs.

Scale and Track Record

Since launching on mainnet in 2021, Orbiter has processed more than 35 million transactions representing over $28 billion in cumulative volume. There have been no smart contract exploits to date. In June 2023, the project's Discord server was compromised by a phishing attack (the Pink Drainer group), resulting in approximately $213,000 in user losses through fraudulent airdrop approvals. Orbiter was not breached at the contract level and compensated affected users up to $1,000 each.

OBT Token

Orbiter launched its OBT governance token on January 20, 2025 with a total supply of 10 billion. The initial circulating supply was 2.8 billion (28%). The token trades on Ethereum, Arbitrum, and Base as an ERC-20 asset.

Allocation breakdown:

• Community: 40% (22% airdropped at TGE; 3% per month for six months thereafter)
• Ecosystem and Growth: 20% (2.5% at TGE, remainder vesting monthly)
• Foundation: 15% (3.5% at TGE, remainder vesting monthly over 23 months)
• Team and Contributors: 15%
• Investors: 10%

The initial airdrop set a minimum eligibility of two months of Orbiter activity since December 2021 plus at least 40 accumulated O-Points. On-chain governance opened in February 2025. OBT also appeared in Bybit Launchpool, Gate.io IEO, and HTX Launchpool distributions surrounding the TGE. The token reached an all-time high near $0.033 in March 2025 before declining sharply in line with the broader airdrop sell-pressure pattern common to community-heavy token launches.

Security and Audits

Smart contracts were audited by SlowMist across three scope areas: the official cross-chain bridge, the decentralized Maker system, and the Swap, Bridge, and O-Pool contracts. The arbitration design incorporates multi-signature controls, permission gating, and fault-tolerance mechanisms for edge-case failure scenarios. The ZK-SPV component allows cross-chain dispute resolution without requiring either party to trust an oracle or centralized relayer.

Team and Investors

Orbiter Finance was founded in Singapore in 2021. The core team operates pseudonymously and has not been publicly named. In March 2022 the project raised a $3.2 million seed round at a $40 million valuation from Tiger Global, StarkWare, Matrixport Ventures, Amber Group, and other investors. A second funding round with OKX Ventures participating closed in January 2024 at an undisclosed size. The team co-authored a 2024 zero-knowledge research paper with the Ethereum Foundation.

ZK Technology Expansion

Beyond the bridge, Orbiter has been developing additional ZK applications. The zkProver aggregates up to 128 ERC-20 user-operation signature verifications into a single ZK proof, reducing average gas consumption to roughly 23,843 per operation compared to 57,135 for standard account-abstraction accounts—a roughly 58% reduction. The Aggregated zkProver extends this into a recursive SNARK scheme allowing ZK rollups to participate in shared proof aggregation, launched in Q4 2024.

The team also announced Vizing, a separate OKX-backed ZK omnichain rollup that positions Orbiter as a Layer 2 network in its own right rather than purely a routing layer. Vizing includes account abstraction infrastructure, a relay protocol, and a liquidity aggregation layer.

Ecosystem Fit

Orbiter's inclusion of Solana and Sonic SVM as supported chains makes it one of the few multi-VM bridges that natively connects Ethereum's rollup ecosystem to SolanaVM networks. Traders and protocols moving assets from Ethereum L2s to Solana can use Orbiter without wrapping intermediaries, reducing counterparty risk and slippage. The open REST API and the OpenClaw MCP toolkit—released in March 2025 and gaining 1,000 GitHub stars within 24 hours—make Orbiter a programmable liquidity layer that DeFi protocols, AI agents, and wallet interfaces can integrate directly.