Terms of Use

Version date: 23 January 2026 (Effective as of: 23 January 2026)

1. Preamble and scope

1.1. These Terms of Use (the “Terms”) govern the manner in which Users use: (i) the decentralized Tetris protocol (the “Tetris Protocol”) operating on public blockchains (Ethereum and compatible networks); (ii) the user-facing web interface at tetris.money and related interfaces (the “Interface”); and (iii) the RUBT token (the “RUBT”) issued and circulating within the Tetris Protocol.

1.2. By connecting a cryptographic wallet to the Interface and/or using the Tetris Protocol, the User confirms that the User has read these Terms, understands their content and legal consequences, and accepts these Terms in full without reservations or amendments.

1.3. These Terms apply together with the Whitepaper of Tetris DAO LLC (the “Whitepaper”). These Terms do not replace the rules and agreements of third parties, including the rules of Execution Platforms, wallet providers, blockchain networks, and other services. For operations within the perimeter of a specific Execution Platform, the applicable law and documents of the relevant Execution Platform prevail.

2. Terms and definitions

2.1. Issuer means Tetris DAO LLC (DAO-LLC) incorporated under the laws of the Marshall Islands (MI), administering the Tetris Protocol and governing smart-contract roles (Owner / Master Minter / Minter / Pauser) through on-chain mechanisms (veTETRIS, timelock, CRC, multisig, and others). The Issuer is the sole addressee of the Monetary Claim evidenced by each RUBT (1 RUBT = 1 RUB) under these Terms and the Whitepaper.

2.2. Settlement Agent means a legal entity (typically in ADGM (UAE) or another comparable jurisdiction) appointed by the Issuer under an agency agreement and acting in the Issuer’s name and at the Issuer’s expense to settle holders’ Monetary Claims under RUBT on Execution Platforms (buyback 1 RUBT = 1 RUB) and to maintain RUB Reserves (including layers L1–L3).

2.3. Execution Platform means partner infrastructure legally entitled to work with Digital Rights, maintaining accounting/registers, performing identification and compliance (KYC/AML), and conducting RUB settlements in accordance with applicable law and the internal documents of the relevant Execution Platform.

2.4. DIS Platform means an Execution Platform that acts as an operator of an information system included by the Bank of Russia in the register of information system operators and operates under the rules of the relevant information system within the meaning of Federal Law of the Russian Federation No. 259-FZ dated 31 July 2020 “On Digital Financial Assets, Digital Currency…” (“FZ-259”).

2.5. Execution Platform User means a person admitted to operations on a specific Execution Platform under its rules (including KYC/AML, status/limits, and contractual basis).

2.6. User means any person connecting a wallet to the Interface and/or interacting with the smart contracts of the Tetris Protocol. A User may or may not be an Execution Platform User.

2.7. Holder means a person holding RUBT on an address/smart account in a public blockchain.

2.8. RUBT means an ERC-20-compatible token within the smart contracts of the Tetris Protocol. Each RUBT evidences a Monetary Claim against the Issuer in the amount of one (1) Russian ruble (1 RUBT = 1 RUB) without interest or any other yield. The Monetary Claim is settleable exclusively: (a) in RUB; (b) on an Execution Platform; and (c) via a request by the Holder to the Settlement Agent acting in the Issuer’s name and at the Issuer’s expense.

2.9. Managed Wallet means a smart-contract wallet linked to a User’s account on an Execution Platform and ensuring synchronization of “Execution Platform accounting ↔ on-chain balance” through dual signature (User + technical authorization by the Execution Platform), where provided for by the platform’s rules.

2.10. Interface means the website tetris.money and other interfaces provided/controlled by the Issuer for convenient access to the smart contracts of the Tetris Protocol. The Interface is not a custodial, settlement, or banking service.

2.11. Tetris Protocol means the set of smart contracts and rules governing issuance, circulation, and other operations with RUBT, as well as on-chain governance and integrations with Execution Platforms.

2.12. TETRIS and veTETRIS mean the token and the vote-escrow governance model for protocol parameters. They do not grant any rights to dividends, guaranteed yield, profit participation, or any liquidation share of the Issuer.

3. Legal nature of RUBT and key legal invariants

3.1. RUBT evidences a Monetary Claim against the Issuer in the fixed amount of 1 RUB per 1 RUBT. The Monetary Claim follows RUBT and transfers to a new Holder together with the transfer of RUBT, unless otherwise required by mandatory provisions of applicable law or the rules of an Execution Platform.

3.2. RUBT does not grant corporate rights, rights to profit participation, dividends, governance, equity interest, or any share in the Issuer’s capital or liquidation proceeds. No interest, coupon, discount, or other yield accrues on RUBT.

3.3. Holders of RUBT do not acquire property rights to Reserves and do not become participants in any fund/trust/collective investment scheme. Reserves serve as collateral for the Buyback mechanism and do not constitute jointly owned property of Holders.

3.4. Settlement of the Monetary Claim is localized: (i) only in Russian rubles (RUB); (ii) only within the perimeter of Execution Platforms; and (iii) only via the Settlement Agent acting in the Issuer’s name and at the Issuer’s expense. Outside Execution Platforms, the Issuer and the Settlement Agent do not conduct RUB settlements and do not accept requests to settle Monetary Claims under RUBT.

3.5. RUBT is not and must not be qualified as a security, derivative financial instrument, e-money, means of payment, deposit, or investment product. The Issuer does not accept deposits and does not maintain client money accounts.

4. Acceptance of the Terms, User status, and access to Execution Platforms

4.1. A User accepts these Terms by: (i) signing a message through a connected cryptographic wallet and/or (ii) continuing to use the Interface and/or conducting transactions with the smart contracts of the Tetris Protocol after these Terms are published.

4.2. To settle the Monetary Claim under RUBT, the User must independently complete the admission procedures of an Execution Platform (including KYC/AML) and enter into the necessary agreements with the operator of the relevant Execution Platform. The Issuer does not onboard Users to Execution Platforms and is not responsible for any refusal of admission.

5. Use of the Interface and smart contracts

5.1. The Interface is a means of access to smart contracts; operations are executed on public blockchains. The Issuer does not hold User assets and does not control Users’ private keys.

5.2. Any on-chain transactions confirmed on the blockchain from a User’s address are deemed executed by the User (or persons authorized by the User) and are binding on the User.

5.3. The Issuer may restrict access to the Interface and/or certain functions (including based on geography and compliance grounds) and may temporarily suspend operation of the Interface for technical or security reasons.

6. Third-party services

6.1. The Interface may contain links to third-party services. The Issuer does not control such services and is not responsible for the consequences of a User’s interaction with third-party services.

7. Settlement of the Monetary Claim (buyback 1 RUBT = 1 RUB)

7.1. Settlement of the Monetary Claim under RUBT is performed by the Holder submitting a Buyback request on a selected Execution Platform. The Settlement Agent, acting in the Issuer’s name and at the Issuer’s expense, buys back RUBT at 1 RUB per 1 RUBT with payment in rubles within the perimeter of the Execution Platform under that platform’s rules.

7.2. Upon completion of the Buyback, the Issuer’s obligation to the relevant Holder in respect of the bought-back RUBT is deemed settled. Technical operations (including burn) do not create new obligations.

8. Execution Platforms, Managed Wallets, and “mirror” accounting

8.1. The rules for RUBT accounting, depositing/withdrawing RUBT into/from the perimeter of an Execution Platform, and RUB settlements are determined by the documents of the relevant Execution Platform and the User’s agreements with its operator.

8.2. Where a Managed Wallet is used, operations are accompanied by dual signature (User + technical authorization by the Execution Platform), ensuring synchronization of “Execution Platform accounting ↔ on-chain balance” (the “mirror” principle).

8.3. Depositing RUBT onto an Execution Platform enables submission of the Monetary Claim under RUBT within the perimeter of that Execution Platform. Withdrawing RUBT terminates the accounting/presentation of the Claim within that platform perimeter until re-deposit, but does not terminate the Monetary Claim against the Issuer unless RUBT has been bought back (Buyback).

8.4. Russian perimeter (DIS Platform under FZ-259). Accounting operations and submission of claims are performed by the DIS operator under the rules of the relevant information system and applicable law. A DIS Platform may establish restrictions and limits for Users, perform identification and compliance checks, and ensure restoration of access to records and integrity/continuity of the information system within its obligations and applicable law.

9. User representations and warranties

The User represents and warrants that the User: (i) has legal capacity and authority; (ii) does not violate sanctions and other restrictions; (iii) understands the legal nature of RUBT as a Monetary Claim of 1 RUB against the Issuer, settleable only on Execution Platforms via the Settlement Agent; and (iv) independently assesses tax consequences and complies with applicable law.

10. Risks

10.1. Use of the Tetris Protocol and holding/operating with RUBT involves risks, including:

• technological risks (smart-contract bugs, attacks, forks, delays);

• regulatory risks (changes in law/enforcement);

• Execution Platform risks (availability, refusal of admission, rule changes);

• Settlement Agent and Reserves risks (operational failures, infrastructure constraints); and

• User risks (loss of keys, phishing, transaction errors).

10.2. The User accepts these risks; the liability of the Issuer/the Settlement Agent is limited to the extent permitted by applicable law.

11. Disclaimer of warranties and limitation of liability

11.1. The Tetris Protocol and the Interface are provided “as is” and “as available.”

11.2. To the maximum extent permitted by law, the Issuer, the Settlement Agent, and their related persons are not liable for indirect damages, lost profits, or loss of data/assets.

11.3. The aggregate liability of the Issuer and/or the Settlement Agent for claims related to use of the Interface/Protocol is limited to the equivalent of USD 100 (one hundred), unless such limitation is prohibited by mandatory provisions of applicable law.

11.4. Nothing in these Terms is intended to limit settlement of the Monetary Claim under RUBT to the extent such limitation is expressly prohibited by applicable law within the perimeter of the relevant Execution Platform.

12. Indemnification

12.1. The User shall indemnify and hold harmless the Issuer/the Settlement Agent and their affiliates from claims and expenses caused by the User’s breach of these Terms or applicable law due to the User’s fault.

13. No advice

13.1. Nothing in the Interface, the Protocol, these Terms, or the Whitepaper constitutes investment, legal, financial, or tax advice.

14. Compliance (sanctions, AML/CTF) and access restrictions

14.1. The Issuer and the Settlement Agent may restrict access to the Interface and its functions on compliance grounds.

14.2. Execution Platforms perform KYC/AML and other checks under their rules and applicable law. The Issuer is not responsible for the results of such checks or refusal of admission.

15. Intellectual property

15.1. The Interface and materials are protected by intellectual property law. The User is granted a limited, non-exclusive, non-transferable license to use the Interface for its intended purpose.

16. Amendments to the Terms

16.1. The Issuer may amend these Terms by publishing a new version. Continued use constitutes acceptance of the new version.

16.2. Provisions ensuring key RUBT invariants (1 RUBT = 1 RUB; no yield and no corporate rights; localized settlement) are not subject to unilateral adverse amendment, except where expressly required by mandatory provisions of applicable law.

17. Governing law and dispute resolution

17.1. Marshall Islands (MI) law applies to the Issuer’s corporate relations, internal governance of smart contracts, issuance, and on-chain circulation of RUBT, unless otherwise required by mandatory provisions of applicable law.

17.2. The law specified in the agency agreement (typically ADGM (UAE)) applies to relations between the Issuer and the Settlement Agent under the agency agreement.

17.3. For operations within the perimeter of an Execution Platform (including admission, KYC/AML, accounting/registers, RUB settlements, and Buyback settlement on that Execution Platform), the governing law and dispute resolution procedure set out in the documents of that Execution Platform and the User’s agreements with its operator apply, subject to mandatory provisions of applicable law.

17.4. For other matters not related to operations within the perimeter of a specific Execution Platform, disputes relating to RUBT and/or its settlement procedure (including interpretation of these Terms and the Whitepaper) shall be heard in courts at the claimant’s choice, and such disputes shall not be subject to consideration in courts of unfriendly states and/or unfriendly jurisdictions relative to the claimant’s place of incorporation, unless otherwise expressly required by mandatory provisions of applicable law.

17.5. The User acknowledges that, depending on the User’s status and jurisdiction, other mandatory rules and mandatory jurisdiction may apply; in such case, the relevant mandatory requirements apply.

18. Final provisions

18.1. These Terms are executed in Russian; where translations exist, the Russian version prevails.

18.2. Invalidity of any provision does not affect the validity of these Terms as a whole.

18.3. These Terms do not create a partnership, joint venture, employment relationship, or fiduciary duties.

18.4. These Terms together with the Whitepaper, the agency agreement, and the documents of Execution Platforms form the legal framework for issuance, circulation, and settlement of RUBT.