Early access · Free to start

The address your customers pay could be swapped. Now you can check it before you trust it.

Register your receiving addresses and payment QR, prove they're yours — no wallet connection, ever — then verify any sign, invoice, or checkout against them before you rely on it. Free to start: 3 addresses and 1 QR.

Create your free account Try the vendor demo → How it works ↓

The problem

You publish a receiving address — a QR by the register, a wallet on an invoice, a link at checkout. An attacker quietly replaces it with their own. The sticker still looks right. The customer still pays. The money just goes somewhere else — and you find out when someone says they paid and you never got it.

On-chain there's no chargeback and no one to call. The first defense is simple: check your own published address before you trust it — and before a customer pays it.

How it works

  1. Register

    Add the receiving addresses and the payment QR your customers actually use.

  2. Prove they're yours

    A quick signature, or a small file on your site. No wallet connection. No keys. Ever.

  3. Verify before you trust

    Before you rely on a published QR or address, scan or paste it and we'll tell you instantly whether it still matches what you registered. Automatic monitoring and swap alerts are on the way.

What you get, free

  • Register and verify 3 receiving addresses
  • Register and verify 1 payment QR
  • Automatic monitoring and email alerts (coming soon)
  • No wallet connection, ever — we read public data you point us to
  • Your data stays yours — we can't see your customers, and we can't move your funds

More options are coming. Right now it's free while we build it with the people who'll use it.

Why you can trust it

We never connect to your wallet.

Verification is a one-time signature or a file on your site — you keep your keys.

We never touch your funds.

Almstins can't move a coin. There's nothing to steal here.

We can't see your customers.

You check your own published addresses — never the people who pay them. No tracking, by design.

Your wallet never touches our server — because we never ask for it.

Early & honest

This is early. It's free while we learn what merchants actually need. If you take crypto — anywhere in the world — try it, then tell us what would make it genuinely useful. We're building this with you, not at you.

Check before money moves.

Create your free account

Register + verify 3 addresses + 1 QR. No card, no wallet connection.

almstins.com

Verified vendors

Any business that takes crypto can verify the addresses it publishes — so customers can trust an address is really yours before they send.

How to get verified

  1. Create a free account and add the receiving addresses and payment QR you publish.
  2. Prove they're yours — a quick signature or a small file on your site. No wallet connection, no keys, ever.
  3. Verify them on demand before you rely on them — scan a sign and we confirm it still matches. Automatic monitoring is coming.

Publishing many addresses?

Exchanges and large platforms can verify everything from their own domain at once: prove your domain, then host a read-only endpoint and issue us an API key. We pull your list so it can be verified — no adding addresses one by one. Live monitoring is on the way.

Your endpoint returns:

GET  https://<your-domain>/almstins/addresses
Authorization: Bearer <your-key>

200 OK
{
  "addresses": [
    { "address": "0xA1b2…", "chain": "ethereum" },
    { "address": "bc1q…",   "chain": "bitcoin"  }
  ]
}

Early access. Any key you give us only reads a list you already publish — it can never move funds or see anything private. To get set up, email donnie@titaniumhut.com.