Passage BridgeCross-chain transfers, independent approval and operations

IntegrationLocal multichain workflow verified

Bring cross-chain into your brand.

Scope your entry point and execution services around the networks, assets, team and business systems you need.

Tech stack

  • Solidity
  • EVM
  • Foundry
  • React / Vue
  • TypeScript
Passage Bridge · Transfer quote and initiation
Transfer quote and initiationDemo excerpt · Full screenshot

01 / Integration

One stack connects four kinds of work

The React DApp serves users, Solidity controls execution, Nest services connect events and transactions, and the Vue console supports daily operations. A shared protocol keeps the applications aligned.

Passage Bridge · Transfer quote and initiation
Transfer quote and initiationDemo excerpt · Full screenshot

02 / Integration

Define the scope before planning deployment

Start with networks, assets, approvers and liquidity. Assess RPCs, key management and security review, and agree licensing, maintenance and migration in the delivery scope.

Passage Bridge · Chain health and indexer cursors
Chain health and indexer cursorsDemo excerpt · Full screenshot Chinese UI · Historical demonstration capture

WHAT WE CAN BUILD WITH YOU

Your market. Your version.

These are customization directions. We agree what to retain, adapt and add before preparing an implementation proposal and quote.

01

A bridge inside your wallet

Tailor route selection, the transfer form, receiving history and message details to your wallet experience.

02

A multichain project service

Define the networks and assets you need, then set approval responsibilities, budgets, monitoring and support.

03

A team operations platform

Assign read-only, task submission and audit roles, with integrations for notifications, finance or operations.

BUILT BEHIND THE EXPERIENCE

See how the workflow is built.

01

Solidity messages and permissions

Hashes bind chains, bridges, assets, recipients, amounts and nonce. Independent approval and execution roles protect the payout workflow from duplicate consumption.

02

Indexer and Relayer

Receipts, finality and reorg handling combine with persisted signing intents to recover by tracking the original transaction.

03

A connected application stack

React DApp, Nest API, MySQL / Redis and Vue operations share a protocol; amounts travel as raw integer strings.

More from the product

Passage Bridge · Asynchronous task tracking
Asynchronous task trackingDemo excerpt · Full screenshot Chinese UI · Historical demonstration capture

BUILT BY 0xF1 / 2026-10-22

What I’m building here

I connect the DApp, contracts, services and operations console into a traceable workflow, focusing on message identity, approval boundaries and execution recovery.

  • Solidity messages and permissions
  • Indexer and Relayer
  • A connected application stack

A task receipt is not a payment receipt.

Operations tasks return a tracking reference when accepted. A payout still needs verification against the destination transaction of the original message. Keeping these results distinct aligns support with the user journey.

What comes next

Confirm commercial source licensing and complete production multisigs, RPCs, real official bridge paths and security review.

EXPLORE THE PRODUCT

Choose what matters to your business.

Questions before we talk

What is included in the project?

A React DApp, Solidity contracts, Nest services, independent Indexer and Relayer, and a Vue operations console. Repository handover, licensing and support are agreed in the proposal.

Can I connect any chain or token immediately?

Current demonstrations follow the Ethereum, Optimism and Base network structure on three local Anvil chains, with ETH, WETH and standard ERC20 assets. Additional networks and assets need individual adaptation and verification.

Passage Bridge / FONE

Building something similar? Let’s talk.

Ask an engineering question, share a product idea or discuss collaboration, deployment or extending the software. A short message is enough.