Sub-processor List
What this list is
A sub-processor is a provider that processes personal data on behalf of CashXChain UG (haftungsbeschränkt) (“CashXChain”) and on our instructions, under a Data Processing Addendum pursuant to Article 28 GDPR. The tables below are the complete list of our sub-processors: what each does, where it processes data, the transfer safeguard, the Article 28 agreement in force between that provider and us, where that provider states how it handles personal data, and the provider’s own sub-processor list. Where a cell is empty, the provider does not publish that document.
A provider that decides the purposes and means itself, or decides them together with us, is a controller rather than a sub-processor and is not in these tables. Those relationships are described in prose after the tables, each with the reason it falls outside Article 28.
A. Product and infrastructure sub-processors
These process personal data as part of delivering the CashXChain platform itself.
| Sub-processor | Purpose | Location of processing | Transfer safeguard | Agreement in force with us | Their privacy policy | Their sub-processors |
|---|---|---|---|---|---|---|
| Cloudflare, Inc. — Impressum (retrieved 24 August 2026) | CDN, DNS, DDoS protection, edge compute (Workers, D1, R2, KV), bot protection (Turnstile) and cookieless web analytics | United States and global edge network | EU Standard Contractual Clauses with a transfer impact assessment | Cloudflare Data Processing Addendum (retrieved 19 August 2026) | Privacy Policy (retrieved 19 August 2026) | Cloudflare sub-processors (retrieved 19 August 2026) |
| Amazon Web Services, Inc. (AWS) — entities and contact (retrieved 24 August 2026) | Cloud hosting and storage of platform data | eu-central-1 (Frankfurt, Germany) | Processed in the EEA. EU Standard Contractual Clauses with a transfer impact assessment where any processing occurs outside the EEA | AWS GDPR Data Processing Addendum (retrieved 19 August 2026) | AWS Privacy Notice (retrieved 19 August 2026) | AWS sub-processors (retrieved 19 August 2026) |
| Resend — contact (retrieved 19 August 2026) | Transactional email delivery, including account, security and service notifications | United States | EU Standard Contractual Clauses with a transfer impact assessment | Resend Data Processing Addendum (retrieved 19 August 2026) | Privacy Policy (retrieved 19 August 2026) | Resend sub-processors (retrieved 19 August 2026) |
| Coinbase, Inc. and Coinbase Crypto Services, LLC | Coinbase Developer Platform and Embedded Wallets, used in the v1 and v2 validation environments | United States | EU Standard Contractual Clauses, Module Two, under Appendix 3 of the Coinbase Developer Platform Terms of Service | Coinbase Developer Platform Terms of Service, section 10, with the processing details in Appendix 2 |
B. Internal operations sub-processors
These are not part of the platform. We use them for internal work — drafting, analysis, correspondence and day-to-day administration — where documents and communications may contain personal data of our employees and interns, of partner staff, and of the representatives of our business customers. They do not process customer transaction data, and they sit outside the payment flow.
| Sub-processor | Purpose | Location of processing | Transfer safeguard | Agreement in force with us | Their privacy policy | Their sub-processors |
|---|---|---|---|---|---|---|
| Proton AG — contact (retrieved 24 August 2026) | Encrypted business email, calendar and file storage | Switzerland | Switzerland is covered by the European Commission’s adequacy decision, so no additional transfer mechanism is required for personal data sent from the EEA | Proton Data Processing Agreement (retrieved 19 August 2026) | Privacy Policy (retrieved 19 August 2026) | Proton data processors (section 4 of that policy; retrieved 19 August 2026) |
| Google LLC (Google Workspace) — Impressum (retrieved 24 August 2026) | Business email, calendar, documents, storage and related productivity services | United States and EU | EU Standard Contractual Clauses with a transfer impact assessment | Cloud Data Processing Addendum (retrieved 19 August 2026) | Privacy Policy (retrieved 19 August 2026) | Google Workspace sub-processors (retrieved 19 August 2026) |
| Anthropic PBC — company (retrieved 19 August 2026) | Drafting, review and analysis of internal documents and correspondence | United States | EU Standard Contractual Clauses with a transfer impact assessment. Our content is not used to train models | In force; not published by the provider | Privacy Policy (retrieved 19 August 2026) | Anthropic sub-processors (retrieved 19 August 2026) |
| OpenAI | Drafting, review and analysis of internal documents and correspondence | United States | EU Standard Contractual Clauses with a transfer impact assessment. Our content is not used to train models | In force; not published by the provider | OpenAI sub-processors |
Our sub-processors’ own sub-processors
Each provider above engages its own sub-processors under Article 28(4) GDPR . Each imposes equivalent data-protection obligations on them and remains liable to us for their performance, as we remain liable to our customers for ours. The right-hand column links to each provider’s current list.
Social-login identity providers
If you choose to sign in with Google, Apple, Microsoft, GitHub or LinkedIn, that provider processes your data during the sign-in process under its own terms. It is not a CashXChain sub-processor: it determines its own purposes and means for that processing and is responsible for it in its own right as an independent controller. We receive only the account information you authorise it to release.
Mobile app distribution
Our mobile apps are distributed through Google Play (Google LLC) and the Apple App Store (Apple Inc.). Where you download or use the apps through those stores, the store operator is not a CashXChain sub-processor: it determines its own purposes and means for the data it collects about downloads, payments and device state, and is responsible for it in its own right as an independent controller.
Licensed Partners: independent controllers and joint controllers
The licensed institutions that perform the regulated payment, conversion, custody and settlement steps are not sub-processors. None of them acts on our instructions, and we cannot instruct any of them out of what its regulator requires. They are named on Regulatory Status & Partner Disclosure. Their role under data protection law is not the same for all of them.
Independent controllers. Most Partners determine the purposes and means of their processing entirely by themselves under their own licence and their own regulatory obligations, and are responsible for it in their own right. We answer for our processing and the Partner answers for its own; neither of us answers for the other’s. Stripe is in this group.
Joint controllers with us. For some processing we and a Partner determine the purposes and means together, which makes us joint controllers for it under Article 26 GDPR . Our agreement with Sokin puts the onboarding, account and instruction data we pass to Sokin in this category. Joint controllership does not mean shared systems or mutual access to each other’s records; it means we are accountable together for that processing. For you it has two practical consequences. You may exercise your data-protection rights against either of us, and Article 82 GDPR makes each joint controller liable for the whole of the damage caused by processing that infringes the Regulation — so you may claim the full amount from either of us, and we settle the split between ourselves afterwards. An arrangement under Article 26 GDPR allocates the respective responsibilities between the joint controllers; its essence is published here once it is in place.
Identity verification
Onboarding and identity verification are performed by those same regulated Partners under their own KYC/KYB and anti-money-laundering obligations. The checks are theirs to run and theirs to answer for, not ours to direct, so no Partner is our sub-processor for them; whether a given Partner is an independent controller or a joint controller with us follows the split above. CashXChain engages no separate identity-verification sub-processor.
International transfers
Where a sub-processor processes personal data outside the EEA and the destination is not covered by an adequacy decision, we rely on the European Commission’s Standard Contractual Clauses together with a transfer impact assessment and any supplementary measures the assessment shows are needed.
Changes
We keep this list current in our Legal Center. When we add or replace a sub-processor we update this page and, where the DPA requires it, give business customers advance notice so they may object. Questions: privacy@cashxchain.com.