Bridge assets, trigger contract calls, and move data across blockchains without trusting a single third party. Zero-knowledge proofs replace multisigs and oracles — mathematically verified, immediately settled, and confidential by default.
Zero-knowledge proof bridges that verify state transitions cryptographically — no multisig committees, no oracle networks, no trust assumptions
Verify the state of external chains using succinct zero-knowledge proofs. Instead of trusting a committee of signers or an oracle network, zkBridge mathematically proves that a transaction occurred on the source chain. The proof is verified on-chain, making the bridge as secure as the chains it connects.
Leverages Ethereum's Sync Committee protocol to track consensus state with minimal overhead. ZK proofs verify Sync Committee signatures, enabling lightweight but maximally secure verification of Ethereum state on ATSHI without running a full Ethereum node.
Dedicated relayer infrastructure submits proofs and monitors both chains. Relayers are economically incentivized and slashable, but critically, they cannot forge proofs. A compromised relayer can delay but never steal — the math protects you, not the relayer's reputation.
Bridge not just tokens, but arbitrary data and smart contract invocations. Trigger an ATSHI smart contract from Ethereum, or execute an Ethereum transaction based on ATSHI state changes. True bidirectional interoperability.
While the source chain may require confirmations, the ATSHI side settles instantly via ARCH consensus. No waiting for block confirmations on the destination — your bridged assets are available the moment the proof is verified.
Adding support for a new chain requires only a new verifier module and a governance vote. The bridge framework is chain-agnostic by design — any chain that can produce ZK-verifiable state proofs can be integrated.
Combine Fully Homomorphic Encryption with zero-knowledge proofs to enable private cross-chain transfers. Prove that a transfer is valid without revealing amounts, addresses, or asset types. Confidential DeFi that spans multiple blockchains.
Bridge Architecture
A multi-layer verification pipeline that ensures every cross-chain message is cryptographically proven before execution
Relayer nodes monitor the source chain for bridge-relevant events (lock, burn, message). Events are captured with full Merkle proof context, ensuring the event genuinely occurred in a finalized block.
A ZK circuit generates a succinct proof that the source chain event is valid. For Ethereum, this includes verifying Sync Committee signatures and block header chains. The proof is compact (<1 KB) regardless of the complexity of the underlying verification.
The proof is submitted to the ATSHI bridge contract, which verifies it using an on-chain ZK verifier. Verification is computationally cheap and deterministic — either the proof is valid or it is not. No subjective judgment, no committee vote.
Upon successful verification, the bridge contract executes the corresponding action on ATSHI — minting wrapped assets, triggering contract calls, or forwarding messages. Settlement is immediate thanks to ARCH consensus.
Verification Pipeline
Every cross-chain bridge promises interoperability. Only zkBridge delivers it without asking you to trust anyone.
Zero-knowledge proofs replace multisig committees and oracle networks. The bridge is secured by mathematics, not by the reputation or economic stake of intermediaries. A compromised relayer cannot forge a proof — ever.
ZK-Verified · TrustlessARCH consensus provides instant finality on the ATSHI side. The moment a ZK proof is verified, your assets are available. No waiting for additional confirmations, no probabilistic finality, no delay.
Instant Finality · No WaitingCombine FHE with ZK proofs to bridge assets privately. Prove that a transfer is valid without revealing amounts, addresses, or asset types. Confidential DeFi that works across chains.
FHE + ZK · PrivateAdding a new chain requires only a verifier module and governance vote. The framework is chain-agnostic — Ethereum today, Polygon today, any ZK-compatible chain tomorrow. No protocol upgrade needed.
Chain-Agnostic · GovernanceFull compatibility with Ethereum and EVM-based chains. Bridge ERC-20 tokens, interact with Solidity contracts, and leverage the entire EVM ecosystem from ATSHI. Familiar tools, trustless bridge.
EVM · Solidity · ERC-20Bridge arbitrary data, trigger cross-chain contract calls, and synchronize state across blockchains. zkBridge is a general-purpose cross-chain messaging layer, not just a token bridge.
Messages · Calls · DataMost bridges rely on trusted intermediaries — multisig wallets, oracle committees, or validator sets. zkBridge is the only solution that replaces all trust assumptions with zero-knowledge proofs.
| Feature | Wormhole | LayerZero | Axelar | Cosmos IBC | ATSHI zkBridge |
|---|---|---|---|---|---|
| Trust Model | Guardian multisig (19 signers) | Oracle + Relayer (configurable) | Validator set (dPoS) | Light client verification | ZK proofs — fully trustless |
| Verification | Multisig | Oracle-based | Validator vote | Light client | Zero-knowledge proof |
| Confidential Transfers | No | No | No | No | FHE + ZK private bridging |
| Settlement Speed | ~15 min (finality dependent) | ~10 min | ~30 sec | ~6 sec (Cosmos side) | Immediate on ATSHI side |
| Cross-Chain Calls | Limited | Yes (OApp messaging) | Yes (GMP) | IBC packets | Full contract calls + data |
| Adding New Chains | Core team deployment | Endpoint deployment | Validator governance | IBC implementation required | Verifier module + governance vote |
| Attack Surface | Compromise 13/19 guardians | Compromise oracle + relayer | Compromise validator majority | Light client forgery (very hard) | Break ZK cryptography (impossible) |
| EVM Support | Yes | Yes | Yes | Limited (via IBC-EVM) | Full EVM compatibility |
| Historical Exploits | $325M hack (2022) | No major exploit | No major exploit | No major exploit | Mathematically unexploitable |
The era of trusted bridges is over. Every multisig committee is a single point of failure waiting to be exploited. zkBridge replaces human trust with mathematical certainty — zero-knowledge proofs that are as secure as the underlying cryptography itself. Bridge your assets, trigger cross-chain calls, and move data with confidence. The math protects you.