N19 Trading runs this site and is the data controller for the personal data described here. Contact: bitcoinhalvingcycles@gmail.com.
Your email address, an optional display name, how you sign in (email and password, or Google), your plan and subscription status, and basic security logs. When you sign up we also note which website or campaign link brought you to us, so we know which channels work. This uses a first-party cookie called src, kept for 90 days. To opt out, use the "Don't track my source" link at the bottom of this page. Passwords are stored only as a salted hash. To enforce one-network-at-a-time use we also log the network address (IP address) you sign in from and the time, and tie each session to it, and we keep these logs for 30 days. We also keep a personal referral code, and the links to any public posts you submit for the share offer. Payments are taken by Stripe. We keep a Stripe customer ID and your subscription status, and we never see or store your full card details.
If you sign up for the weekly cycle update without an account, we keep only your email address, when you confirmed it, which page you signed up on and, if known, the website that brought you. After you unsubscribe we keep only the address and the date, so we never email you again.
Connecting an AI assistant. If you connect an AI assistant such as Claude to your account through our connector, we store a sign-in token for that app, in scrambled form, so it can read Bitcoin cycle data for your plan. The app never receives your email address, password or payment details, and it can't change anything in your account. A token stops working after 60 days without use; to disconnect sooner, remove the connector in the app.
To run your account and provide the service (contract). To take payments and keep financial records (legal obligation). To keep the service secure and stop one login being shared (legitimate interests), which includes using your IP address. To send product updates only if you opted in (consent, which you can withdraw in Account). To send the weekly cycle update to people who asked for it (consent; every email has an unsubscribe link). Pro members also get the weekly update as part of the service, and can stop it from any email.
Railway (hosting and database), Resend (account emails), Stripe and Link, Stripe's merchant of record service (payments, tax, refunds and billing portal), Google (only if you choose Google sign-in). Some of these providers store or process data outside the UK, including in the United States, where this site is hosted.
Account data until you delete your account. Payment and invoice records for as long as UK tax law requires (currently six years).
You can access, correct, delete, restrict, object to or port your data, and complain to the ICO (ico.org.uk). Contact bitcoinhalvingcycles@gmail.com, or delete your account yourself in Account.
Don't track my source Done. We won't record where you came from on this browser.