Vol. I · Brand · Stand-alone · Direct sale via Escrow.com

bitcoin21.cash

bitcoin + 21 + .cash — the supply cap, put to work as money

Brand

Released once. To one buyer.

bitcoin21.cash pairs a compact Bitcoin brand with an ending that says payments. The 21 recalls the fixed supply of 21 million coins, and .cash frames the name around spending instead of holding. It suits a payment app, a merchant checkout, a point-of-sale terminal or a remittance service built around Bitcoin.

Inquire about this domain →

Quick offer for bitcoin21.cash

No friction — drop your email and a brief context.

Prefer the full form? Scroll to contact form · Or email [email protected]

§ 01 — Reading the name

Bitcoin names the network. The number 21 is shorthand among holders for the protocol's fixed limit of 21 million coins, and it can also be read as a nod to the twenty-first century. The two parts run together without a hyphen and are easy to say in any language. The .cash ending is a generic extension for payments and money, so the full address reads almost like a sentence: Bitcoin, capped at 21 million, as cash.

The same name is also held on eleven further endings, from country codes to .exchange and .tech, and they can be acquired together. That allows one brand to cover a whole product family. Taken alone, bitcoin21.cash suits the payments side: a Lightning wallet, a merchant checkout plugin, a cash-back programme paid in sats, or a remittance corridor between countries.

§ 02 — Who it is for

Three projects this name fits.

Merchant checkout

A payment plugin for online shops and cafés that accepts Bitcoin at the till and settles merchants in their preferred currency.

Lightning wallet

A spending wallet for everyday payments in sats, with a name that tells users at once the app is made for paying.

Remittance service

Transfers between family members across borders, routed over Bitcoin and presented to senders under a short address they can remember.

§ 03 — The same name, other endings

bitcoin21 — held on 12 endings.

The endings can be acquired together, so one brand covers its markets from the start. Each has its own page.

§ 04 — Questions

Before you make an offer.

Is .cash a credible ending for a payments product?

The .cash ending describes the product category in plain terms. For a consumer payment app or merchant tool, it becomes part of the brand: users read bitcoin21.cash as a promise of spending. A company can still run a country domain alongside it for individual markets.

How does buying bitcoin21.cash work?

Send an offer with the form on this page or by email. If both sides agree, the purchase is settled through Escrow.com: the buyer pays into escrow, the domain is transferred, and the funds are released after the transfer is confirmed.

Can bitcoin21.cash be acquired together with other names?

Yes. The same name is held on further endings, listed on this page. You can make an offer for the single domain or for the whole set.

Is there a list price?

No. Every domain in the portfolio is sold on a Make-Offer basis; the price is agreed per inquiry.

Can I pay in Bitcoin?

Payment in Bitcoin is possible by arrangement, outside Escrow.com — mention it in your inquiry and we will agree on the route together.

Partner Brand · Ad

Bitcoin21 — Apparel for Bitcoiners. Premium Bitcoin hoodies, tees & the 21 series. By Bitcoiners, for Bitcoiners.

Visit bitcoin21.shop →

Ad space Your brand next to this one — reach Bitcoin-native buyers on 500+ pages. Advertise with us →

Make an offer for bitcoin21.cash

Tell us about your project.

Direct sale via Escrow.com.

₿Make an Offer