Passage BridgeCross-chain transfers, independent approval and operations

OperationsLocal multichain workflow verified

One transfer. A team that can follow through.

Independent approval, destination payout, chain health and persistent tasks give the team a place to handle every step.

Tech stack

  • Solidity
  • EVM
  • Foundry
  • React / Vue
  • TypeScript
Follow the workflow Talk about this idea

0xF1 · 2026-10-22 · Build notes

Passage Bridge · Receipt and four distinct states
Receipt and four distinct statesDemo excerpt · Full screenshot

01 / Operations

Separate the receipt from processing state

Source confirmation, approval, payout and indexer finality remain distinct. Users see the payment fact while operators track any review still required.

Passage Bridge · Receipt and four distinct states
Receipt and four distinct statesDemo excerpt · Full screenshot

02 / Operations

Match permissions to responsibilities

Staff view or submit tasks within their permissions. Independent roles approve on-chain. Retries continue against the original message and reconciliation checks the final result.

Passage Bridge · Operations overview
Operations overviewDemo excerpt · Full screenshot Chinese UI · Historical demonstration capture

THE BUSINESS & VALUE FLOW

Fees serve the transfer. Inventory funds the payout.

Users pay a transfer fee while destination pools supply payout inventory. An operating team manages assets, approvals, costs and risk budgets to maintain the service.

  1. 01

    Initiate

    Review fees and expected net receipt

  2. 02

    Approve

    Independently authorize the exact message

  3. 03

    Pay out

    Execute within asset limits and inventory

  4. 04

    Reconcile

    Check transactions, fees and inventory

THE MODEL IN A DEMONSTRATION

Recorded local example: 0.15 ETH sent, 0.0015 ETH fee and 0.1485 ETH received. These are demo settings; a quote neither reserves inventory nor guarantees execution.

01

Customer value

Bring asset movement into a wallet, branded website or multichain product.

02

Business direction

Charge transfer service fees under clear terms; agree branded deployment, integration and maintenance separately.

03

Operating costs

Liquidity allocation, gas, RPCs, approval work, operations and security review require budgets.

Fees and limits follow configuration and governance procedures. Pools do not imply investment returns. Confirm assets, pricing and operating responsibilities for each deployment.

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 · Chain health and indexer cursors
Chain health and indexer cursorsDemo excerpt · Full screenshot Chinese UI · Historical demonstration capture
Passage Bridge · Asynchronous task tracking
Asynchronous task trackingDemo excerpt · Full screenshot Chinese UI · Historical demonstration capture
Passage Bridge · Staff permissions and task receipts
Staff permissions and task receiptsDemo 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.

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