05 / FAQ
5.1 Which languages are currently supported?
Back-office / Front-end UI: Switch manually in the interface settings.
| Language | Code |
|---|---|
| Simplified Chinese | zh |
| English (default) | en |
| Vietnamese | vi |
API: Specified via the request parameter lang; noted in each endpoint's parameter description.
| Language | Code |
|---|---|
| Simplified Chinese | LANGUAGE_ZH_CN |
| English (default) | LANGUAGE_EN |
5.2 Which countries are currently open?
South East Asia
| Country / Region | Code |
|---|---|
| Malaysia | MY |
| Philippines | PH |
| Singapore | SG |
| Vietnam | VN |
Other
| Country / Region | Code |
|---|---|
| Australia | AU |
| Canada | CA |
| China | CN |
| Hong Kong | HK |
| India | IN |
| New Zealand | NZ |
| Papua New Guinea | PG |
| South Africa | ZA |
| United Kingdom | GB |
| United States | US |
5.3 Customer Support Contacts
Support operates day and night shifts. For all inquiries, send an email to support-general@bfx.live and we will respond within 24 hours.
5.4 What is the difference between a test merchant and a production merchant?
A test merchant tests functions such as the system and error handling in the production environment, with bets routed through the risk-control test line, ensuring all functions work correctly before going live. A production merchant operates in the production environment, with bets routed through the risk-control production line.
5.5 Can the minimum bet be adjusted?
No, it is a fixed value.
5.6 Is a game lobby supported?
There is no lobby or sub-game structure.
5.7 Is guest mode (use without login) supported?
Guest mode without login is not currently offered. All functions require identity verification via the login API before use.
5.8 Demo Access
To help partners quickly understand the system workflow and game interface before formal integration, a demo entry point is provided for direct login:
Demo entry: https://login.bfxdemo.com/
- The demo environment does not require the API integration flow; you can log in directly with an account and password.
- The demo path differs from the SSO path used in the production integration flow. It is for feature preview and interface familiarization only and must not be used for production integration.
- For production integration, follow the 01 / Integration Flow and 02 / Login + Wallet APIs chapters of this document.
5.9 Sports Prediction Market Rules
The sports prediction market trades in shares. A player buys shares in whether a given outcome occurs, priced between ¥1 and ¥99.
Core Rules
Price = Probability
The price per share directly reflects the market's assessed probability of the outcome. "Lakers win" quoted at ¥65 means the market prices the Lakers' chance of winning at 65%.
Settlement is either ¥100 or ¥0
If the outcome occurs, each share pays out ¥100; otherwise it settles at zero. Buying "Lakers win" at ¥65: if the Lakers win, each share gains ¥35; if they lose, each share loses ¥65. Maximum loss equals the amount staked.
TIP
The figures above are gross, before commission. Actual net profit is the gain minus commission.
Three Steps
- Pick a match and read the rules — every market includes a rules section stating the settlement rules and how postponements and abandonments are treated.
- Place an order — buy at market price, or post a limit order and wait to be filled. Example: "Lakers win" trades at ¥65; if that looks expensive, post ¥60 and wait for the price to come back.
- Wait for the result — once the match ends and the result is determined, payout is automatic. Correct positions are credited, incorrect ones settle at zero. No manual action required.
Commission Calculation
Commission rates differ by execution role: Maker (posting an order) and Taker (filling an order). Using a calculation base of ¥200:
| Type | Rate | Commission | Net credited |
|---|---|---|---|
| Maker (posting) | 2% | ¥4 | ¥196 |
| Taker (filling) | 3% | ¥6 | ¥194 |
TIP
The table above is an example only. Actual rates follow the latest notice on the front-end commission rate page.
Further reading (how prediction markets differ from traditional sports betting): https://www.rayskyinvest.com/139072/what-is-polymarket
5.10 How long after a rollback does re-settlement happen?
It depends on when the event provider sends the corrected result; the platform does not control that interval.
Across 132 rollbacks measured in the test environment, every one was followed by a re-settlement. The median interval was 73 seconds, p90 about 6 minutes, and the longest about 22 minutes; 89% completed within 5 minutes.
5.11 What is the final status of a bet when the event is ultimately cancelled?
trades[].settlement_status becomes VOIDED; it does not stay at PENDING. The cancellation flow also flips trades that had already been settled to voided.