General Terms and Conditions
for the use of the „Precious Metal Vault“ services“
Status: January 2026
§ 1 Scope of application and provider
(1) These General Terms and Conditions („GTC“) apply to all contracts between 4System GmbH, Am Feldgraben 43, 59514 Welver, registered in the Commercial Register of the Arnsberg Local Court under HRB 8021, represented by the Managing Director Kay Lenze (hereinafter „Provider“), and the user (hereinafter „User“) for the use of the „Precious Metal Vault“ services provided at gold-portfolio.com (hereinafter „Services“).
(2) The services enable the user to track and manage precious metal portfolios using a web-based application. The services include in particular the encrypted storage of portfolio data, the retrieval of precious metal prices and various analysis and export functions.
(3) Deviating, conflicting or supplementary general terms and conditions of the user shall not become part of the contract unless their validity is expressly agreed to in writing.
§ 2 Registration and conclusion of contract
(1) The use of the services requires the user to register on the provider's website. The user guarantees that the data provided during registration is complete and truthful.
(2) Only persons of legal age are permitted to register. By registering, the user confirms that he/she is of legal age.
(3) The contract for the use of the services is concluded when the provider confirms the registration.
(4) The user is obliged to keep his access data secret and to protect it from access by third parties. The provider must be informed immediately in the event of suspected misuse of the access data.
§ 3 Service description
(1) The provider makes the services available to the user for retrieval via the Internet. The services include in particular
a) The recording and management of precious metal transactions (purchases and sales of gold, silver, platinum and palladium)
b) The encrypted storage of portfolio data according to the zero-knowledge principle
c) The retrieval and display of precious metal prices via external data sources
d) Analysis and visualization functions for portfolio development
e) Export functions for portfolio data
(2) The specific scope of functions depends on the tariff selected by the user and may vary between free and fee-based variants.
(3) The provider is entitled to further develop and adapt the services insofar as this is reasonable for the user and the essential functions are retained.
§ 4 Zero-knowledge encryption and password responsibility
(1) The services use end-to-end encryption in accordance with the zero-knowledge principle. This means that all portfolio data entered by the user is encrypted exclusively in the user's browser before it is transmitted to the provider's servers.
(2) At no time does the provider have access to the user's unencrypted data. The decryption key is derived from the Vault password selected by the user and never leaves the user's end device.
(3) The user is solely responsible for the secure storage of his Vault password. The Provider expressly points out that it is not possible to restore the encrypted data if the Vault password is lost. A password reset by the provider is technically impossible.
(4) The Provider shall not be liable for any loss of data resulting from the loss, forgetting or insecure storage of the Vault password by the User. This also applies to damage resulting from the inability to access encrypted data.
§ 5 Precious metal courses and disclaimer for course dates
(1) The precious metal prices displayed in the services are obtained from external data providers and are for information purposes only.
(2) The provider assumes no liability for the accuracy, completeness, timeliness or availability of the price data displayed. The prices may deviate from the actual trading prices and may be delayed.
(3) The information and price data provided expressly do not constitute investment advice, financial advice, tax advice or any other recommendation to buy or sell precious metals. The provider does not provide any financial services within the meaning of the German Banking Act (KWG) or the German Securities Trading Act (WpHG).
(4) Investment decisions should always be made on the basis of the user's own research and, if necessary, with the assistance of qualified financial advisors. Users make investment decisions solely at their own risk.
§ 6 Chargeable services
(1) In addition to free basic functions, the Provider may offer premium services subject to a charge. The scope, duration and costs of the fee-based services can be found in the respective service description on the website.
(2) Chargeable services are ordered by selecting the desired tariff and completing the order process. The contract for chargeable services is concluded upon confirmation by the provider.
(3) Payment shall be made using the payment methods offered on the website. The user shall ensure that sufficient funds are available for the direct debit.
(4) In the case of subscription tariffs, the contract is automatically extended by the respective contract term if it is not terminated in due time. The notice period is one month to the end of the respective contract term.
§ 7 Right of withdrawal for consumers
(1) If the user is a consumer within the meaning of Section 13 of the German Civil Code (BGB), they have a right of withdrawal when concluding a contract for chargeable services.
(2) The user has the right to withdraw from the contract for chargeable services within fourteen days without giving reasons. The withdrawal period is fourteen days from the date of conclusion of the contract.
(3) To exercise the right of withdrawal, the user must contact the provider (4System GmbH, Am Feldgraben 43, 59514 Welver, E-Mail: ma**@*****em.de) by means of a clear statement (e.g. by e-mail) of his decision to withdraw from this contract.
(4) In order to comply with the withdrawal period, it is sufficient that the notification of the exercise of the right of withdrawal is sent before the expiry of the withdrawal period.
(5) In the event of an effective revocation, the services received by both parties shall be returned. If the user has requested that the services should commence during the revocation period, he must pay the provider an appropriate amount corresponding to the proportion of the services provided up to the revocation.
§ 8 Availability and technical requirements
(1) The provider endeavors to ensure that the services are available as uninterruptedly as possible. However, due to the nature of the Internet and computer systems, the provider cannot guarantee uninterrupted availability.
(2) Maintenance work that may lead to temporary restrictions will be announced in advance wherever possible.
(3) The user is responsible for providing a suitable end device with an up-to-date web browser and a sufficient internet connection. The services require a browser that supports the Web Crypto API for client-side encryption.
§ 9 Data protection
(1) The provider collects, processes and uses the user's personal data only within the framework of the applicable data protection regulations and in accordance with the provider's privacy policy.
(2) Zero-knowledge encryption stores the user's portfolio data in such a way that the provider has no access to the content. The provider only stores the encrypted data blocks.
(3) Further information on data processing can be found in the privacy policy on the provider's website.
§ 10 Limitation of liability
(1) The provider shall be liable without limitation for damages resulting from injury to life, body or health which are based on an intentional or negligent breach of duty by the provider or its legal representatives or vicarious agents.
(2) The provider shall only be liable for other damages insofar as these are based on an intentional or grossly negligent breach of duty by the provider or its legal representatives or vicarious agents. Liability for slight negligence is limited to cases of breach of essential contractual obligations (cardinal obligations). In this case, liability is limited to the foreseeable damage typical for the contract.
(3) Liability for the loss of data shall be limited to the typical recovery costs that would have been incurred if backup copies had been made regularly and in accordance with the risks involved.
(4) In particular, the provider is not liable for:
a) Loss of data due to loss of password by the user
b) Damage due to incorrect or incomplete course data
c) Losses arising from investment decisions made by the user
d) failures or disruptions that are beyond the control of the provider
(5) The provisions of the Product Liability Act remain unaffected.
§ 11 Rights of use and intellectual property
(1) The provider is the owner of all rights to the services, including the software, the design and the content of the website.
(2) The provider grants the user a simple, non-transferable right to use the services as intended, limited to the term of the contract.
(3) The user is not entitled to reproduce, distribute, make publicly accessible or edit the services or parts thereof, unless this is necessary for the intended use.
§ 12 Contract term and termination
(1) The contract for the free use of the services is concluded for an indefinite period and may be terminated by either party at any time without notice.
(2) Contracts for fee-based services can be terminated with one month's notice to the end of the respective contract term.
(3) The right to extraordinary termination for good cause remains unaffected.
(4) The Provider is entitled to extraordinary termination in particular if the User breaches material provisions of these GTC.
(5) Notice of termination must be given in text form (e.g. e-mail).
§ 13 Amendments to the GTC
(1) The provider reserves the right to amend these GTC with effect for the future, insofar as this is reasonable for the user.
(2) The user will be informed of changes by email at least six weeks before they come into effect. If the user does not object to the changes within six weeks of receipt of the notification, the amended GTC shall be deemed accepted. The provider shall inform the user of his right of objection and the consequences in the notification of change.
(3) In the event of an objection, the provider may terminate the contract with effect from the date on which the changes come into force.
§ 14 Applicable law and place of jurisdiction
(1) The law of the Federal Republic of Germany shall apply to the exclusion of the UN Convention on Contracts for the International Sale of Goods.
(2) The exclusive place of jurisdiction for all disputes arising from this contract is 59514 Welver, provided that the customer is a merchant, a legal entity under public law or a special fund under public law.
§ 15 Final provisions
(1) Should individual provisions of these GTC be or become invalid, the validity of the remaining provisions shall remain unaffected. In place of the invalid provision, the valid provision that comes closest to the economic purpose of the invalid provision shall be deemed to have been agreed.
(2) There are no ancillary agreements to these GTC. Amendments and supplements must be made in writing. This also applies to the waiver of this formal requirement.
(3) The contractual language is German.
4System GmbH
Am Feldgraben 43 | 59514 Welver
E-Mail: ma**@*****em.de
Commercial register: HRB 8021, Arnsberg Local Court
Managing Director: Kay Lenze