Terms of Use

02Definitions and interpretation

• Account: your Probio account, identified by your sign-in credentials and username.
• Balance: the US-dollar amount credited to your Account in our ledger, from deposits, trading results, rewards and adjustments, less debits.
• Market: a question about a future event with defined outcomes (normally "Yes" and "No") on which you can take a Position.
• Event: the underlying real-world occurrence a Market relates to. One Event can have several Markets.
• Position: your exposure to an outcome of a Market, opened with Margin and a chosen Leverage.
• Margin: the amount of your Balance you commit to a Position.
• Leverage: the multiple applied to Margin to set the size of a Position.
• Notional: Margin multiplied by Leverage, measured when an order is accepted.
• Parlay: a single bet combining two or more Market outcomes, all of which must be correct for it to pay.
• Data Sources: third-party providers whose prices, order books and resolution data the Platform uses, currently including Polymarket's public data feeds.
• Demo mode: the practice mode of the Platform, which uses virtual funds with no monetary value.

Headings are for convenience only. "Including" means "including without limitation". If a translation of the Terms conflicts with the English version, the English version applies.

03What Probio is and how it works

Probio provides an interface for viewing information about real-world events and, for eligible users, for taking positions on the outcomes of those events using a Balance held with us.

Prices and data

Market questions, prices, order books and resolution data come from Data Sources, currently Polymarket's public data feeds. Probio is not affiliated with, endorsed by, sponsored by or acting on behalf of Polymarket, and Polymarket has no responsibility to you in connection with Probio.

Execution

Orders you place on Probio are not sent to Polymarket or any other venue. They are executed against Probio: we fill them against your Balance at a price we calculate from the public order book at the time your order is accepted, applying the checks described in the Terms. Probio is therefore your counterparty on every live Position and Parlay, and we earn fees on your trading. We do not provide investment advice and nothing on the Platform is a recommendation.

Custody of funds

When you deposit supported digital assets to the deposit address shown in your Account, we credit their US-dollar value to your Balance at the rate shown when the deposit is confirmed. The deposited assets are held by Probio. Your Balance is a record of what we owe you under the Terms; it is not a bank deposit, it does not earn interest, and it is not covered by deposit insurance or an investor compensation scheme. We may hold customer funds together with Probio's own operational funds.

Demo mode

Demo mode uses virtual funds only. Demo results have no value, cannot be withdrawn and do not represent what would have happened with real money.

Changes and availability

We may add, change, suspend or remove Markets, features or the Platform, in whole or part, including restricting Markets to closing trades only. We will try to give notice of material changes that affect open Positions, but may act without notice where needed for security, legal compliance, market integrity or to prevent harm.

04Eligibility and minimum age

You may use the trading features of the Platform only if you are at least 18 years old (or the age of majority where you live, if higher), have full legal capacity to enter into the Terms, and are not a Restricted Person (section 5). If you act for an organisation, you confirm you are authorised to bind it, and "you" includes that organisation.

You may hold only one Account. Accounts are personal: you may not let anyone else use your Account, or use anyone else's.

05Permitted and restricted jurisdictions

We may add jurisdictions to this list at any time. Using a VPN, proxy or any other tool or third party to get around these restrictions is prohibited. If you are or become a Restricted Person you must stop trading; you may still close existing Positions and withdraw your remaining Balance, subject to the Terms and applicable law.

It is your responsibility to make sure that using the Platform is lawful where you are. Making the Platform available is not an offer or solicitation in any jurisdiction where it would be unlawful.

06Account registration and wallet connection

You must give accurate, complete information when you register and keep it up to date. Your username is also your public profile handle. You are responsible for keeping your sign-in credentials, devices and any authenticator secure, and for all activity on your Account. Tell us immediately at support@probiomarkets.com if you suspect unauthorised use.

To deposit or withdraw you link one or more digital-asset wallets you control. You are responsible for those wallets, their keys and the addresses you use. Deposits sent to the wrong address, on the wrong network, or in an unsupported asset may be lost and we may be unable to recover them. Transactions on public blockchains are irreversible.

Deposits below $5, withdrawals below $10, and withdrawals to wallets that are not linked to your Account are not accepted. Withdrawals are reviewed before they are paid, may require an authenticator code, and may be delayed by security checks, including a waiting period after you link a new wallet or change security settings.

07Identity verification and compliance

We may at any time ask you for information or documents to verify your identity, residence, source of funds or eligibility, or to meet anti-money-laundering, counter-terrorist-financing, sanctions or other legal obligations. Until you provide them to our satisfaction we may limit your use of the Platform, including trading and withdrawals, to the extent permitted by law.

You confirm that you are not the subject of sanctions administered by the United Nations, the European Union, the United Kingdom, the United States (including the OFAC Specially Designated Nationals list) or any other applicable authority, and that you will not use the Platform for money laundering, terrorist financing, sanctions evasion or any other unlawful purpose. We may screen Accounts, wallets and transactions and may report activity to the authorities where the law requires or allows.

08Market integrity and prohibited trading

You must not engage in, attempt, or help anyone else engage in, any conduct prohibited by the Market Integrity & Prohibited Trading Policy, which forms part of the Terms. In summary, that includes:

• Insider trading: trading on material non-public information obtained or used in breach of a duty of trust or confidence, trading on such information passed to you by someone who could not trade on it, and trading on an Event whose outcome you can decide or materially influence.
• Settlement manipulation: interfering with an Event, its participants or officials, Data Sources or resolution processes, or knowingly exploiting settlement errors.
• Artificial activity: wash trading, self-trading, fictitious or pre-arranged trades, spoofing, layering, collusion, and trading designed to farm rewards, cashback, referral payments or other incentives.
• Exploiting defects: knowingly taking advantage of bugs, incorrect balances, margin, mark, liquidation or settlement calculations, duplicate credits, authentication or authorisation defects, race conditions, or quotes known to be stale or erroneous.
• Limit circumvention: using multiple accounts, coordinated wallets, other people or automation to get around position, exposure or other limits.
• Abusive execution: deliberately exploiting known platform defects, compromised data feeds or execution errors.
• Other misconduct: market manipulation, fraud, money laundering, sanctions evasion, circumvention of jurisdictional restrictions, unauthorised access, deceptive identity or account information, and collusion to bypass restrictions.

Profitable trading, good-faith arbitrage, hedging, market making, algorithmic trading within the Platform's limits, and trading on lawfully obtained public information are not prohibited in themselves.

General conduct

You must also not: break any applicable law; use the Platform for or on behalf of a Restricted Person; scrape or harvest data from the Platform by automated means except through interfaces we publish for that purpose; reverse engineer, decompile or disassemble the Platform except as the law allows; introduce malicious code; attack, overload or interfere with the Platform or its infrastructure; access accounts or systems without authorisation; or use the Platform to harass, defame or deceive anyone.

09Position limits and leverage

Live Positions may use Leverage from 1× to 10×. Each Position is limited to $5,000 of Notional, and your total Notional on any one Event is limited to $5,000, counting all open Positions and resting orders on every Market in that Event on both sides without netting. Parlays are limited by a maximum payout per slip shown on the Platform.

Limits are checked when an order is accepted. An order that would exceed a limit is refused. Where we have confirmed on reliable evidence, after review, that Accounts are controlled together or acting in concert, we may apply limits to them jointly; you may dispute a confirmed link through support.

We may change limits, leverage, minimum and maximum order sizes, or the Markets available for leverage or Parlays, at any time, including for particular Markets or Accounts. Changes apply to new orders; we will not reduce the leverage of an open Position except as described in section 11 or section 14.

10Fees and charges

Current fees are shown on the Platform before you confirm an order. At the date of these Terms they are:

• Live Positions: an entry fee of 1% of Margin, plus 0.2% of Margin for each 1× of Leverage, plus a fixed network fee of $0.50 per order.
• Parlays: a fee on the stake that rises with the payout multiple (Under 5×: 5% · 5–20×: 7.5% · 20–100×: 10% · 100× and up: 15%), plus a fixed network fee of $0.50. Fees are not refunded if the Parlay loses.
• Early Parlay cash-out: 10% of the Parlay's current fair value, deducted from the amount paid out.
• Discounts and credits: holders of PROBIO tokens, where that programme is active, receive a 20% discount on trading fees (not on network fees). Reward credits may be applied to fees as described on the Platform.
• Deposits and withdrawals: any withdrawal fee or network cost is shown before you confirm. Blockchain network fees for deposits are paid by you to the network.

Fees are debited from your Balance when the order is accepted, together with the Margin or stake. We may change fees for new orders by updating the Platform; we will give at least 7 days' notice of any increase in the standard fee schedule, except where an increase is required by law or by a change in our costs that we could not reasonably foresee.

11Collateral, margin and liquidation

When you open a Position, the Margin and fees are debited from your Balance. The size of the Position is the Notional divided by the fill price. Your maximum loss on a Position is the Margin committed to it plus fees; losses are not taken from the rest of your Balance.

We mark open Positions using the best available bid price from the Data Sources. If a leveraged Position's mark reaches its liquidation price, the Position is closed automatically at the prevailing mark and the remaining Margin, if any, is returned to your Balance. Optional stop-loss and take-profit levels are triggered on the same mark.

Market orders are refused if the estimated fill, calculated by walking the public order book for the full Notional, would be worse than the best available price by more than the tolerance shown on the Platform. Resting limit orders fill only when the estimated fill is at or better than your limit and within that tolerance. These checks are protections, not guarantees of execution or price.

If a Market stops trading before it is resolved, Positions remain open until settlement and may not be closable in the meantime.

12Market settlement and reliance on third-party data

Each Market settles according to its rules and the final outcome reported by the relevant Data Source. Winning outcome shares settle at $1 and losing shares at $0 (or at any other final value the Data Source reports, such as on a split or void resolution), and the result is credited to or debited from your Balance.

We do not determine Event outcomes and are not responsible for the accuracy, timing or method of a Data Source's resolution. Resolution may be delayed, disputed, revised or voided. Where a Data Source revises a resolution, or where its resolution is affected by an obvious error, manipulation or a failure we can demonstrate, we may delay settlement, settle on the corrected outcome, or void the affected Positions and return Margin and fees, acting reasonably and consistently for all affected customers.

Settlement disputes with Probio are handled through the complaints process in section 23. We cannot change a Data Source's resolution.

13Liquidity providers and counterparty risk

Because Probio is the counterparty to live Positions and Parlays, your ability to receive profits and withdraw your Balance depends on Probio's financial condition. If Probio becomes insolvent or unable to meet its obligations, you may lose some or all of your Balance.

Probio may in future offer a liquidity pool or similar product through which third parties provide capital that supports trading on the Platform. That product is not live. If it is introduced, it will be governed by separate terms, and we will update these Terms to describe any effect it has on customers, including any sharing of losses. Probio does not currently share losses from one customer's positions among other customers.

14Platform errors and erroneous transactions

If a trade, fill, mark, liquidation, settlement, fee, reward or Balance entry results from a demonstrable system fault, data-feed error, pricing error or calculation error (an "Erroneous Transaction"), we may correct it to the value it should have had, cancel it and reverse its effects on your Balance, or re-process the affected settlement. This applies whether the error was in your favour or ours.

We will act within a reasonable time after we identify the error, apply corrections consistently to all affected customers, limit corrections to what is needed to undo the error, notify affected customers, and keep a record of what was changed and why. If funds credited in error have already been withdrawn, you must return them on request.

Knowingly exploiting an Erroneous Transaction or the defect that caused it is prohibited conduct under section 8.

15Suspensions and account termination

You may stop using the Platform and close your Account at any time by withdrawing your Balance and contacting support. Open Positions must be closed or settled first.

We may, acting reasonably and in proportion to the circumstances, restrict, suspend or close your Account, in whole or in part, if: you breach the Terms or we reasonably suspect a breach; we are required to by law, a regulator or a court; you are or become a Restricted Person; we reasonably suspect fraud, money laundering, sanctions exposure or unauthorised access; your Account is inactive for an extended period; or continuing would expose you, other customers or Probio to material legal, financial or security risk.

Restrictions can include refusing or cancelling unexecuted orders, preventing new Positions while allowing existing ones to be closed, and, where legally permitted and in accordance with section 17, temporarily holding withdrawals of disputed amounts. Where the law allows, we will tell you the reason. When an Account is closed we will return the remaining Balance to a wallet linked to it, less any amounts we are entitled to withhold or recover under section 16, after our standard checks.

16Treatment of disputed funds and improper profits

This section applies only where, after the review described in section 17, we have reasonably established that prohibited conduct occurred, or where an Erroneous Transaction has been identified.

• Recovery of improper profits: we may withhold, reverse or recover profits, rewards, cashback, referral payments and other gains that are directly attributable to the prohibited conduct or Erroneous Transaction.
• Recovery of losses: we may recover losses that the prohibited conduct directly caused to Probio or other customers, to the extent legally recoverable, by set-off against your Balance or otherwise.
• Your own funds: your deposits and any amounts not attributable to the prohibited conduct remain yours. We do not withhold unrelated balances as a penalty.
• Disposition: amounts we withhold are held pending the outcome of the review and any appeal, and are then returned, applied to a recovery under this section, surrendered to an authority where the law requires, or otherwise dealt with as required by law.

Before taking any final action under this section we will, where the law permits and it would not prejudice an investigation, notify you of the proposed action and give you a reasonable opportunity to respond. You may appeal under section 23.

Nothing in this section limits any remedy available to us or to you at law.

17Market surveillance and investigations

We monitor activity on the Platform to detect and prevent prohibited conduct, fraud and financial crime. Automated monitoring produces alerts for review by authorised staff; an alert is not a finding of wrongdoing, and decisions that affect your Account are made by a person, recorded with reasons.

During a review we may preserve records of your orders, Positions, transactions, devices and communications with us; ask you for information or an explanation; cancel unexecuted orders; prevent new Positions; and, where legally permitted and approved through our internal controls, temporarily hold withdrawals involving disputed amounts. You must cooperate with reasonable requests. We may share information with law enforcement, regulators, Data Sources and other platforms where the law requires or permits, as described in the Privacy Policy.

18Your responsibilities and representations

Each time you use the Platform you confirm that:

• you meet the eligibility requirements in sections 4 and 5 and the information you have given us is true and complete;
• you trade for your own account, with your own funds, and not on behalf of anyone else;
• you are not in possession of material non-public information about, and are not in a position to influence, the outcome of any Event you trade, in a way prohibited by section 8;
• you understand how the Platform, leverage, liquidation, Parlays and settlement work, and the risks in section 19;
• you will not use VPNs or other tools to hide your location or identity to get around the Terms; and
• you are responsible for any taxes on your use of the Platform and for complying with the tax laws that apply to you.

Information on the Platform, including prices, odds, statistics, news and guides, is provided for general information only. It is not financial, investment, legal or tax advice, and you should not rely on it as such.

19Financial risk disclosures

• Leverage: leverage up to 10× magnifies losses as well as gains. Small adverse price moves can liquidate a Position and lose all its Margin.
• Gaps and liquidity: markets can be thin and prices can jump. Orders may be refused or filled at worse prices than displayed, and Positions may be closed at worse prices than liquidation, stop-loss or take-profit levels.
• Settlement: outcomes depend on third-party reporting and can be delayed, disputed, revised, ambiguous or voided.
• Counterparty and custody: Probio is your counterparty and holds your funds. Balances are not insured or protected by any deposit or investor compensation scheme. Digital assets and the networks they run on carry technical, security and price risks.
• Platform and data: outages, errors, delays or incorrect data can affect pricing, execution and settlement, and corrections may be made under section 14.
• Regulatory: laws on prediction markets, derivatives and digital assets are changing. Changes could require us to restrict or end the service in some or all jurisdictions.
• Restrictions: your Account may be restricted under the Terms, including during reviews.

20Third-party services and dependencies

The Platform depends on third parties, including Data Sources, blockchain networks, wallet providers, authentication, hosting, database and analytics providers. We do not control them and, to the extent permitted by law, are not responsible for their availability, accuracy, security or conduct. Your use of third-party services may be governed by their own terms. Links to third-party sites are for convenience and are not endorsements.

21Intellectual property

Probio and its licensors own the Platform and all content, software, designs, trademarks and other intellectual property in it, other than content you provide and third-party data. Subject to the Terms, we grant you a personal, limited, revocable, non-exclusive, non-transferable licence to use the Platform for its intended purpose. Some components may be provided under separate open-source licences, which you must comply with.

If you post content or give us feedback, you grant us a worldwide, royalty-free, perpetual, irrevocable, non-exclusive licence to use, copy, modify, display and distribute it in connection with operating and promoting the Platform, and you confirm you have the right to grant it. Your public profile and shared slips are visible to others as described on the Platform and in the Privacy Policy.

22Disclaimers and limitation of liability

Nothing in the Terms excludes or limits liability for fraud, for death or personal injury caused by negligence, for gross negligence or wilful misconduct, or any other liability, or any statutory right as a consumer, that cannot be excluded or limited under the law that applies to you.

Indemnity

To the extent permitted by law, you will indemnify Probio against losses, liabilities and reasonable costs (including legal fees) arising from your breach of the Terms, your violation of any law or third-party right, or prohibited conduct under section 8. This does not apply to the extent the loss was caused by our own breach or negligence.

23Complaints and dispute resolution

If you have a complaint, including about a trade, a settlement or a decision on your Account, contact support@probiomarkets.com (or compliance@probiomarkets.com for integrity decisions) with your username, the relevant references and what you would like us to do. We will acknowledge complaints within 5 business days and aim to give a full response within 30 days.

If you appeal a decision under sections 15 to 17, it will be reviewed by a person who was not involved in the original decision.

If a complaint is not resolved, either of us may bring the dispute before the competent courts of Curaçao under section 26. Nothing in this section prevents you from bringing a claim in the courts of your country of residence where mandatory consumer law gives you that right.

24Privacy and data processing

We process personal data as described in our Privacy Policy, including to operate your Account, process deposits and withdrawals, meet legal obligations, and detect and investigate prohibited conduct. When you accept the Terms we record the version accepted, the date and time, the document references, your browser's user agent, your approximate country and a one-way hash of your IP address, as evidence of acceptance.

25Changes to the Terms

We may change the Terms. We will post the new version with its date and version number. For material changes, meaning changes that adversely affect your rights or obligations, such as to fees, limits, liability or dispute resolution, we will give you reasonable advance notice through the Platform or by email, and you will need to accept the new version before opening new Positions. If you do not accept, you may continue to close Positions, access your Account information, make complaints and withdraw your Balance. Other changes take effect when posted.

Changes required by law, or needed urgently to address security or market-integrity risks, may take effect immediately.

26Governing law and jurisdiction

The Terms and any dispute or claim arising out of or in connection with them are governed by the laws of Curaçao, without regard to conflict-of-law rules. Subject to section 23, the courts of Curaçao have jurisdiction. This does not deprive you of the protection of mandatory provisions of the law of your country of residence that cannot be excluded by agreement.

General

If any provision of the Terms is found unenforceable, the rest remains in effect. Our failure to enforce a provision is not a waiver. You may not transfer your rights under the Terms without our consent; we may transfer ours to an affiliate or successor on notice to you. The Terms are the entire agreement between us about their subject matter. Sections that by their nature should survive termination, including sections 14 to 17 and 21 to 26, survive.

27Contact information

Operator

ProbioMarkets B.V.

Support

support@probiomarkets.com

Market integrity, appeals and reports

compliance@probiomarkets.com

Legal notices

legal@probiomarkets.com

Privacy

privacy@probiomarkets.com