mBridge · BIS Multi-CBDC Cross-Border Payment Bridge (Overview)

Wiki route

This entry sits under fintech index. Read it with Japan financial regulation for tokens, crypto assets, and payments for adjacent context and Japan stablecoin regulatory architecture for the broader system boundary.

[!info] TL;DR mBridge is a wholesale CBDC network that directly settles between central banks. It is based on HotStuff BFT + DLT permissioned ledger, bypasses SWIFT + Fedwire, and performs point-to-point PvP atomic settlements in each country’s local currency CBDC. The withdrawal of BIS from 2025-10 freed China-led freedom, forming a bipolar structure with the 3-yen MRA-US dollar system.

Key facts

• Incubated in 2021 by BIS Innovation Hub, PBoC, HKMA, BoT, and CBUAE. ^•
• 2024-06 Expanded to 5 central bank by joining Saudi SAMA · 2024 MVP stage ^•
• 2025-10 BIS withdraws from operations due to “geopolitical risks” ^•
• Consensus is HotStuff BFT · Central banks 100% Validators · Commercial banks are sub-participants ^•
• Payment model is PvP (Payment-versus-Payment) atomic · Testnet < 10 seconds ^•
• Total GDP of covered countries approx. 35% ^•
• 2030 Estimated processing volume $35-75B/year · Equivalent to SWIFT cross-border 0.5-1% ^•

mBridge ledger, PvP settlement, and validator model

Each central bank operates an mBridge validator node 1 + its own CBDC ledger, and shares the mBridge ledger to perform cross-currency payments. The PvP model ensures that 2 items’s CBDC transfers are simultaneous successes or simultaneous rollbacks, eliminating Herstatt risk. Commercial banks are connected via each country’s central bank as sub-participants – there are no private nodes. HotStuff BFT provides < 10 seconds finality, contrasted with SWIFT MT cross-border 1-3 days. The withdrawal of BIS (2025-10) has rather freed China’s PBoC to lead the protocol — with the BIS neutrality constraint removed, mBridge can more aggressively expand into the BRICS+ currency and commodity trade scenario. See Cross-border smart contracts via SWIFT API for comparison with SWIFT API channel.

Origin & evolution

The BIS Innovation Hub Hong Kong Centre launched the project in 2021 with PBoC, HKMA, BoT, and CBUAE. The 2022-2023 PoC completed cross-currency tests; Saudi SAMA joined in 2024-06, expanding the group to five central banks. In 2024 the MVP reached commercial-ready status and was tested against Aramco oil settlement, China-Brazil soybean trade, and China-Arab gold-delivery scenarios. BIS withdrew from operation in 2025-10, publicly citing geopolitical risk. In 2026-Q2, interoperability testing with Brazil BCB DREX pointed toward a cross-continental non-USD settlement loop; see mBridge non-USD settlement-ring scale.

Related

• Wiki Index
• Mbridge Bis Multi CBDC Vs Agora
• mBridge six central-bank roster and roles
• Three-circle MRA framework
• Jurisdiction list and monetary protectionism

Sources