> ## Documentation Index > Fetch the complete documentation index at: https://docs.x1id.io/llms.txt > Use this file to discover all available pages before exploring further. # What you can do > Multi-chain addresses, a primary name, a web3 profile, subnames, verification, permanent ownership, recovery, locks, gifting, and a built-in marketplace — everything an X1ID handle gives you. # What you can do Your handle is the starting point. Here's everything you can do with it — use as much or as little as you like. ## Receive on any chain Point `@you` at your addresses on **X1, Solana, Ethereum, and Bitcoin**. When someone sends to `@you`, their wallet looks up the correct address for the chain they're paying from — no more copy-pasting a base58 string. You hand out one name; it works everywhere you hold funds. Your home chain. `@you` resolves to your X1 address so anyone can pay you on X1 by name. Add your Solana address and receive there too. On X1 and Solana the same wallet key works, so this usually needs no new setup. Add your Ethereum address so people on Ethereum can send to `@you` instead of a `0x…` string. Add your Bitcoin address and collect BTC under the same handle as everything else. You choose which chains to add — one or all four. Add more later at any time; your handle stays the same. ## Get paid with a QR code and a link Every handle comes with a **QR code** and a **shareable payment link**, so people can pay `@you` by scanning or tapping instead of copying an address. Show the QR in person, or drop the link in a bio, a message, or an invoice. See how the QR code and payment link work, and where they shine — creators, merchants, and splitting bills with friends. ## Be shown as @you everywhere Set `@you` as your **primary name** and apps that support X1ID display your wallet as `@you` instead of a long address — in transaction histories, profiles, and anywhere your wallet appears. It's the difference between being `7Np1jK…pQ4mZ` and being a name people recognize. ## Build a web3 profile Behind your handle sits a profile you control: A picture and details that make `@you` recognizable at a glance. Link your site and social accounts so people can find the real you. Attach a link to your decentralized website, tied to your handle. Everything lives under `@you`, so your identity travels with your name. ## Subnames One handle can branch into purpose-built names — **`pay.you`**, **`docs.you`**, **`shop.you`** — all under the handle you already own, at **no extra registration fee**. Each one can carry its own addresses, so you can keep your money and your projects neatly separated under a single identity. Give out `pay.you` for payments and keep `@you` for your identity, so a public payment name never exposes your main wallet. `docs.you`, `app.you`, `shop.you` — one name per purpose, all clearly yours. Hand teammates or departments their own subname without giving up control of the parent. * **They're free to create** — no registration fee beyond the handle you already own. * **You're in control.** As the owner of `@you`, you create and remove its subnames whenever you like. * **They live under your handle.** Subnames follow the parent — there's nothing separate to renew or manage. * **One level deep.** You can make `pay.you`, and that's the level subnames work at — clean and predictable. ## Prove it's really you Anyone can *claim* to be `@you`. Verification lets you **prove** it — two ways: Prove you control each address on your handle and it shows as **verified**. Senders can tell a confirmed address from an unproven one before they send a single coin. Use your handle to sign in to apps that support it. Instead of a password, you prove ownership of `@you` — a login that *is* your identity, and that a copycat can't fake. Verified records are the ones others should trust. An unverified address is shown as unverified so no one mistakes an unproven claim for a confirmed one — honesty is built in, not bolted on. ## Own it permanently You register a handle **once** and it's yours to keep. There's no renewal to remember and no expiry date that could hand your name to a stranger. This is a deliberate choice: a name people send money to must never quietly change owners because a payment was missed. See [Fees](/pricing) for how one-time pricing works. ## A safety net Losing access to a wallet is the nightmare scenario in crypto. X1ID gives you two tools for it: Set up a recovery option in advance, and if you lose access to your wallet you can take your handle back. It's your insurance policy against a lost or inaccessible key — set it up while everything is fine, so it's there when you need it. If you think your key might be compromised, lock your handle. A lock freezes it — ownership, records, and profile — so a thief can't move it or redirect your addresses while you sort things out. Unlocking has a built-in waiting period, so an attacker can't simply lock and immediately steal. ## Gift a handle You can **pre-pay a handle for someone else** — a great way to bring a friend onto X1 who doesn't hold any XNT yet. You cover the registration up front; they claim the name with **zero funds of their own**. Choose the handle you want to give and pay its registration fee up front. The amount is set aside for that specific name. Send it to a friend to claim. You can tie the gift to a specific wallet so the handle lands there no matter who opens it. Your friend claims the handle without paying or holding any XNT. It becomes theirs, fully owned, from that moment. A gift is set aside for the name you chose, and it has an expiry. If it's never claimed, the amount you pre-paid comes back to you — you're not out anything for an unclaimed gift. ## Buy and sell handles X1ID has a **built-in marketplace** at [app.x1id.io/marketplace](https://app.x1id.io/marketplace) — no third-party site needed. Handles change hands right inside X1ID, so a sale is as safe and final as any on-chain payment. **List** a handle you own at a fixed price. When someone buys it, ownership transfers to them and the proceeds come to you, minus the marketplace fee. **Buy** a listed handle outright at its asking price and it's yours immediately — the perfect way to get a name someone else already registered. **Make an offer** on a handle even if it isn't listed. The owner can accept whenever they like; your offer is held safely until then. **Bid** in an auction for a sought-after name. Auctions have anti-sniping protection, so a last-second bid extends the clock and gives everyone a fair chance. Premium and reserved names — short names, brands, and well-known words — are released through the marketplace rather than by ordinary registration. A **2% fee** applies to sales; details are on [Fees](/pricing). Prefer to trade your handle like a collectible? You can optionally turn it into an NFT, which lets you sell it on standard NFT marketplaces too. It's entirely opt-in — most holders never need it — and it's a one-way step, so only do it if you specifically want that. See the [FAQ](/faq). ## Next Put all of this to use — start on app.x1id.io. Share your referral link and grow your corner of X1. How ownership, anti-impersonation, and on-chain auditing work.