February 2026 marks the start of an exciting chapter in Starcoin's cross-chain endeavors. The testnet launch of our native bridge on Starswap signals the firm resolve of the team to bring Starcoin's advancements in asset security and scalability to the larger onchain community — starting with Ethereum.
Joining our community administrator, was Starswap's core engineer, Valentine Reese. Together, they asked and answered trendy questions about the new bridge, from strategic reasoning to community topics and the future direction of cross-chain development in the Starcoin ecosystem.
Check out the full AMA recap below:
A: Hello Starcoiners! Welcome to today's special session! We've all been feeling the excitement building up in the ecosystem.
Today, we aren't just talking about a new feature — we are witnessing the opening of the Star-Gate. The Starcoin Native Bridge testnet is officially here to redefine how liquidity moves!
To give us the full deep dive, I am honored to invite the core engineering minds behind Starswap, our leading ecosystem partner.
They are the architects who built this bridge from the ground up to ensure it's Move-native, secure, and lightning-fast.
Welcome to the Starcoin community, @ValentineReese! We're thrilled to have you here.
VR: Hello everyone, I am Valentine, a core engineer at Staraswap. I'm excited to share an update on the bridge and provide more details for everyone.
A: Today's session will last about 15 minutes. I'll be asking our guest some key questions that the community has been buzzing about. After that, we might open the floor for a few quick questions if time permits. So. The chat is now muted so we can all focus on the alpha. Let's dive in!
First Q1，What exactly does this Native Bridge do? Which chains are supported?
VR: Simply put, the Starcoin Native Bridge is the official, high-security highway connecting the Starcoin and Ethereum ecosystems.
It allows you to move your assets safely between these two worlds. Currently supported Starcoin (Halley Testnet / Mainnet) and Ethereum (Sepolia Testnet / Mainnet),We're already planning to expand to more EVM-compatible chains very soon!
A: And Q2, How long does a transfer take? And what about gas fees?
VR: Speed depends on the confirmation time of both chains. Starcoin to Ethereum, Usually 5–15 mins, depends on ETH congestion, Ethereum to Starcoin, usually 3–10 mins. About safety buffer, there's a slight delay between approve and claim to detect any abnormal on-chain behavior, It's shorter than the finalization time, so it won't slow you down much. About fees, you'll pay gas on the source chain when starting the transfer, and on the destination chain when you approve and claim.
A: How secure is the Bridge? What happens if a node gets hacked?
VR: Security is our top priority, we use a multi-sig and threshold mechanism. Multi-Node, we run 3 independent Bridge Authority nodes. An attacker can't fake a middleman because only registered nodes in the contract are valid. 2/3 quorum,
No transaction happens unless at least 2 out of 3 nodes sign off on it. Isolation, private keys are stored in encrypted k8s secrets, each node runs in its own isolated instance. Even if one node is compromised, the attacker cannot move any funds without the other signatures. Our monitoring system would instantly flag and isolate the problem node. So about Chain ID Isolation, we strictly separate Ethereum and Starcoin Chain IDs in the config so a transaction from one network can't be "replayed" on another.
A: Next up, let's talk about,How do you prevent Double-Spending or Replay Attacks?
VR: We have multiple layers of defense. First is Unique IDs, Every bridge event has a persistent unique identifier in our database to prevent double-processing. Second is on-chain Nonce, The smart contracts use a "nonce" system to ensure every transaction is one-of-a-kind. The third is Finality Check, We wait for "Finalized" blocks on Ethereum and have a specific finality mechanism enabled on the Starcoin side.
So about Chain ID Isolation, we strictly separate Ethereum and Starcoin Chain IDs in the config so a transaction from one network can't be "replayed" on another.
A: What if all Bridge nodes go down? Are my assets lost?
VR: Your assets are 100% safe. Funds are locked in the smart contracts on-chain, not inside the nodes. If nodes go down, it only pauses the processing, your money is still there.
About persistence, We are using k8s StatefulSets, so when nodes reboot, they pick up exactly where they left off.
Once back online, the system automatically scans for any missed requests and processes them. You don't need to do anything!
A: Now, let's look at the technical side,How do you ensure the code works perfectly when moving from Dev to Mainnet?
VR: Our philosophy is: "Same Code, Different Config"
Our devs can spin up a full local environment (Starcoin Devnet, Anvil, Bridge Node and Indexer) in 30 seconds.
We use the exact same Docker image for testing and production, and we follow a "Gradual Launch" path: Local -> CI -> Testnet -> Mainnet, If anything goes wrong, we can roll back in seconds.
A: So,let's deep dive, What happens during a chain "Reorg" (Forks)?
VR: This is a critical safety point. we use Dual Confirmation and Rollback. We only execute "mint" or "unlock" actions for "finalized" blocks (e.g., waiting 64 blocks on ETH or 16 on STC)
And our system constantly compares local data with the on-chain Hash, if a mismatch is found (a fork), the system automatically identifies the "Fork Point," discards the unconfirmed events, and resyncs with the new "true" chain. No fake deposits, no double-entry.
A: If there's an emergency, can you stop the Bridge quickly?
VR: Yes, we have an Asymmetric Kill-Switch. If our monitors detect an anomaly, a pre-signed "Pause" command can be triggered automatically. It's high-speed and low-threshold for maximum protection.
To "Unpause," it requires a high-threshold Quorum of signatures from the Bridge admins. We can also pause specific directions (e.g., only ETH to STC) to keep risks under control.
A: How do you change limits or add tokens? Are keys kept online?
VR: We use Offline Signing (Air-Gapped). Admins sign governance proposals (like raising the USDT limit) on an offline machine.
Once enough signatures are collected, the "Hex string" is sent to the chain. This covers all governance command, updating code, adding tokens, or changing committee members.
The master keys never touch the internet.
A: To wrap things up, here is our last question of the session: Which assets are supported now? What's next?
VR: To ensure deep liquidity and maximum safety, we are launching with USDT first. However, our architecture is Universal. The smart contracts are already designed to handle any token (BTC, ETH, USDC, etc.)
Adding a new asset doesn't require a code change, it just takes a quick governance vote. We will expand based on community demand.
A: Huge thanks to the Starswap team for the deep dive. 50 minutes well spent! I know we have more to cover, so make sure to join the Starswap community for further discussion!
The Starcoin Native Bridge Testnet is now LIVE! Your feedback is the fuel that powers our stars.
Join the Testnet: https://bridge.starswap.xyz 🔍Guide：https://starcoin.medium.com/starcoin-native-bridge-guide-d6c52fc5fd5e
Thanks to the amazing community for tuning in to this AMA session. Our admins are always available to provide additional support with your inquiries and contributions.
Let's keep building. Onward and upward!💪
About Starcoin
Starcoin provides the utmost security from the origin via its enhanced PoW consensus and Secure smart contract, using the language of Move. Through layered and flexible interoperability, it optimizes the building of ecosystems such as DeFi, NFTs, Gaming, etc., with higher efficiency and convenience. This process redefines value by empowering every participant in the ecosystem to enjoy the multiplication of values.
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