Privacy Policy

Last updated: October 18, 2026

Coinsel (“Coinsel,” “we,” “us”) runs coinsel.io (the “Service”). The Service shows collectors the coin market near them: auction lots, coin shows and dealers, priced against sold comps, along with price tools for graded coins and currency. This policy explains what personal information we collect, why we collect it, who we share it with, and what choices you have.

If you are a California resident, please also see our CCPA Notice, which describes additional rights and disclosures.

1. Information we collect

Information you give us

• Account information. Your email address and password when you register. Passwords are stored as salted hashes, so we never see or store your password in readable form. If you sign in with a third-party provider such as Google, we receive your email address and a basic profile identifier from that provider.
• Your area.The ZIP code and search radius you set, plus how often you want alert emails. We turn the ZIP code into approximate coordinates for the center of that ZIP code. If you have an account, we save your area to it. If you don't, it is kept in a cookie on your device (see Section 7). We do not collect precise GPS location from your device.
• Want lists. The coins you tell us you are looking for, such as a series, date range, grade range or the most you would pay, and the matches you save or dismiss.
• Show prep sheets. If you build a prep sheet for a coin show, we store the items on it, any target or walk-away prices you type in, and what you log after the show: whether you bought an item, what you paid, which dealer you bought from, and your notes.
• Dealer offer reports. If you report what a dealer offered you, we store the dealer, what you brought in (a description, or a coin from your portfolio), the category, quantity, the offer, whether you accepted it and the date. We also store the comp value and spot price we worked out for that date. See Section 3 for who can see a report.
• Lowball checks. The coin, grade and offer you ask us to check, and the optional details you add. See Lowball Check and offer data in Section 3.
• Dealer listing claims and responses.If you claim a dealer listing, we store the business email address you verify it with. If you post a response on a claimed listing, that response is public and shows on the dealer's page.
• Collection data. Coins you add to your portfolio, including certification numbers, grades, purchase prices, acquisition dates, sales you record and any notes you write. On plans that include Sell Signals we use what you paid to calculate and keep a record of the signals we generate for each holding (see Section 2).
• Lookups. The certification numbers and coins you look up.
• Billing information. If you subscribe to a paid plan, our payment processor collects your card details, billing address and country. We receive only a transaction record, the last four digits of the card, the card brand and the expiration date. Full card numbers never touch Coinsel's servers.
• Communications. Messages you send us through the contact form, and your replies to our emails.

Information we collect automatically

• Usage data. Pages viewed, features used, timestamps, referring page and similar details.
• Device and connection data. IP address, browser type and version, operating system, device type, language and time zone.
• Approximate location from your IP address.When you haven't set a ZIP code, we look up your city from your IP address so the Service can show nearby results. The lookup runs against a database on our own servers. Your IP address is not sent to a third party for it, and we don't store the IP address as part of it.
• Email opens and clicks. Want list alert emails and show summary emails contain a small image and tracked links, so we can tell whether an email was opened and which lot was clicked. We use this to measure whether alerts are useful.
• Upgrade and plan history. When you arrive on our pricing page from a prompt in the Service, we record which prompt it was. We also keep a record of each change to your plan. We use both to understand which features lead people to upgrade.
• Abuse prevention. To rate limit forms and spot one person filing reports from several accounts, we use your IP address. For dealer offer reports and Lowball Check we store a one-way hash of it rather than the address itself.
• Cookies and similar technologies. See Section 7.

Information we receive from others

• Authentication providers, if you sign in through one, as described above.
• Payment processor, which sends us subscription status, renewal dates, and payment success or failure.

We do not buy personal information from data brokers, and we do not collect sensitive categories such as government ID numbers, precise geolocation, biometric data, health data, or racial, religious or political information.

2. How we use your information

We use the information above to:

• Create and maintain your account, and sign you in.
• Show you the coin market inside your radius: auction lots, estate sales, coin shows and dealers near your area.
• Check auction lots against your want list and email you about matches, at the frequency your plan and settings allow.
• Build show prep sheets, keep what you log on them, and send the summary email after the show.
• Work out the comp value of a coin you report an offer on, decide whether the report can be counted right away or needs review, and publish the median offer for a dealer once it has enough reports.
• Verify that someone claiming a dealer listing works for that business.
• Look up coins by certification number and show price guide values, sold comps and auction results.
• Keep your portfolio, sales records and preferences across sessions and devices.
• Process subscriptions, renewals, refunds and billing support.
• Send transactional email: account confirmations, password resets, receipts, the alerts you asked for, listing claim links and service notices.
• Send product updates or marketing email, only if you opt in. This may include offers from partners, such as grading services, dealers or bullion sellers, that Coinsel picks and sends itself. Partners do not receive your email address or other contact information through this. You can unsubscribe at any time with the link in any such email. You can turn off every alert email, including price, want list and show alerts, in Settings. Account emails, such as password resets and receipts, still come while you hold an account.
• On plans that include it, calculate Sell Signals for your holdings by comparing the cost basis and acquisition date you recorded against sold prices we have already collected for the same coin and grade. We keep a record of each signal and how it turned out so the feature can report its own track record to you. Your holdings and cost basis are not sent to an AI provider or any other third party to produce it.
• Watch for fraud, abuse, scraping, credential stuffing and violations of our Terms.
• Fix bugs, measure performance, and see which features get used and which lead to upgrades, so we can improve them.
• Produce aggregated statistics, such as median dealer offers and market activity, that do not identify you.
• Comply with legal obligations and enforce our agreements.

We do not sell your personal information, and we do not share it with third parties for their own advertising.

Legal bases (visitors in the EEA and UK)

Where the GDPR or UK GDPR applies, we rely on contract to provide the Service you signed up for, legitimate interests for security, fraud prevention, product improvement and aggregated statistics, consent for marketing email and analytics cookies, and legal obligation for tax, accounting and lawful requests.

3. Who can see what you submit

Most of what you store on Coinsel is visible only to you. A few features involve other people, and this is exactly what they can see.

• Dealer offer reports.Visitors never see an individual report. They see only a median for a dealer and category once there are at least five reports, with the sample size and date range. Your name is never shown. If the dealer has claimed their listing, they can see each counted report about their shop (the item description, category, date, how the offer compared with comp, and whether it was accepted) so they can dispute one they believe is wrong. They never see who sent it, so leave personal details out of the description. The person who moderates reports can see a report together with the submitting account's email address and age, to check it is genuine.
• Dealer responses posted from a claimed listing are public.
• Everything else, including your area, want list, prep sheets, portfolio and plan, is private to your account.

Lowball Check and offer data

When you use Lowball Check (on coinsel.io or through our OpenClaw plugin), we store:

• the coin, its grade, and whether it is certified and by which service
• the offer amount, who made it (dealer, pawn shop, coin show, private buyer), and how (walk-in, mail-in, online, show)
• your reason for selling, only if you tell us
• the first 3 digits of your ZIP code (never the full ZIP)
• the result, if you choose to tell us what happened (sold, countered, kept, and the final price)

We do not collect your name, email, phone number, address, or the name of the business that made the offer. To prevent abuse we keep a one-way hash of your IP address for rate limiting. It is never shared or sold, and is deleted after 30 days.

How we use it. To calculate verdicts and regional comparisons, and to improve our pricing.

Aggregated statistics. Coinsel may publish, sell, or license aggregated statistics derived from this data, for example average dealer buy prices by region, coin type, or buyer type. Aggregates are only produced from groups of at least 5 offers and cannot be used to identify an individual check or person. We never sell or share individual records.

Your choices. Every field except the coin and offer amount is optional. Contact us with questions.

4. Service providers

We share personal information with the vendors below, only as needed for them to perform services for us. Each handles it under contract and under its own privacy policy.

Other situations where we may disclose information

• Legal requests. If required by law, subpoena, court order or a valid government request, or to protect the rights, safety or property of Coinsel, our users or the public.
• Business transfer. If Coinsel is acquired, merged or its assets sold, your information may transfer to the new owner. We will tell you before your information becomes subject to a materially different policy.
• At your direction. Where you ask us to share something.

5. How long we keep it

• Account data. For as long as your account is open, and for 60 days after you delete it, in case the deletion was a mistake.
• Area, want lists, prep sheets and portfolio data. Until you delete them or your account.
• Dealer offer reports. Kept, because the medians on dealer pages are built from them. If you delete your account, your reports stay in those medians with the link to your account removed.
• Dealer listing claims. Until the claim is revoked or you delete your account. Public responses stay on the listing until you or we remove them.
• Sell Signals history. While the holding exists, so the feature can report how earlier signals turned out. If a paid subscription lapses we block access rather than delete it, so your history is there if you come back.
• Email open and click records, and upgrade and plan history. While your account is open. Records of pricing page visits made while signed out are never tied to an account.
• Billing records. 7 years, as required for tax and accounting.
• Server and security logs. 90 days.
• Support correspondence. 2 years.
• Aggregated statistics. Indefinitely, since they no longer identify you.

Backups are cycled every 30 days, so deleted data may remain in encrypted backups for up to 30 days after it leaves the live system.

6. Your rights and choices

Wherever you live, you can:

• Access the personal information we hold about you.
• Correct it, in your account settings or by contacting us.
• Delete your account and the data tied to it, by contacting us. You can delete individual portfolio entries and want list items yourself at any time.
• Get a copy of your data by asking us. Paid plans can also export sales history as a CSV file.
• Opt out of marketing email with the unsubscribe link in any marketing email, and turn off alert emails in Settings.
• Object to or restrict certain processing, where the law gives you that right.
• Withdraw consent at any time, where we rely on consent.

To use any of these rights, contact us. We will respond within 45 days, which the law lets us extend by another 45 days where needed, or within 30 days for GDPR requests. We may need to confirm it is you, usually by checking you control the email on the account. We will not treat you differently for using these rights.

If you are in the EEA or UK, you also have the right to complain to your local data protection authority.

Do Not Track. Browsers send Do Not Track signals inconsistently and there is no common standard for honoring them, so we do not currently respond to them.

7. Cookies and storage on your device

We use:

• Essential cookiesto keep you signed in and protect your session. The Service doesn't work without them.
• Preference cookies to remember the ZIP code and radius you set, for up to two years, so local results work before you create an account, and to remember your cookie choice.
• Analytics cookies from Google Analytics, to understand how the Service is used. These load only after you accept them in the cookie banner.

Two features also keep data in your browser rather than in a cookie. A show prep sheet keeps a copy of itself on your device, along with any changes waiting to sync, so it works with no signal at a show. Signing out clears it. The pricing page keeps a short-lived note for the length of your browser session so one visit isn't counted twice.

You can block or delete cookies and site data in your browser settings. Doing so will sign you out and may break parts of the Service.

8. Security

We protect your information with encryption in transit and at rest, hashed passwords, row-level access controls in our database, and access limited to those who need it. No system is perfectly secure, and we can't promise absolute security. If a breach affects your personal information, we will tell you and any required regulators within the time the law requires.

You are responsible for keeping your password private and for activity under your account. Use a unique password, and tell us right away if you think someone else has used your account.

9. Children

The Service is not directed to children under 16, and we do not knowingly collect personal information from them. If you believe a child under 16 has given us personal information, contact us and we will delete it.

10. International users

Coinsel is operated from the United States, and your information is stored and processed in the United States. If you use the Service from outside the U.S., your information will be transferred to the U.S., where privacy laws may differ from those where you live. Where required, we rely on Standard Contractual Clauses or another approved mechanism for transfers out of the EEA or UK.

11. Third-party sites and data

The Service shows data from, and links to, sites we don't control. These include eBay, auction houses and auction listing sites, estate sale sites, grading services and dealer websites. This policy does not apply to them. When you bid on a lot or visit a dealer's site, that site's own privacy policy applies. Prices, comps and offer medians shown on Coinsel are for information only. They are not an appraisal, an offer or investment advice.

12. Changes to this policy

We may update this policy as the Service changes. We will post the new version here with a new date. If the changes are material, we will tell you by email or a notice in the Service at least 5 days before they take effect. Using the Service after that date means you accept the updated policy.

13. Contact us

Questions, requests or complaints about privacy: contact us. We aim to reply within 5 business days.