Plain answers about proving you own a crypto wallet: how wallet signatures work, how to sign with the wallet you have, what is safe to sign, and how anyone can check the result without trusting us.
How to check who owns a crypto wallet
Addresses don't carry names. Here's what does tell you who's behind one.
What is address poisoning, and how do you avoid it?
A lookalike address in your history, waiting for you to copy it. How to spot it.
Is this crypto address a scam? Check before you send
A one-minute checklist before any crypto payment you can't undo.
Crypto proof of funds: how to prove you hold it
A balance anyone can see, plus a signature only you can make.
Verifying a counterparty's wallet before an OTC deal
Make sure the wallet really belongs to who you're trading with.
The Travel Rule and self-hosted wallets
What crypto businesses need when customers use their own wallets.
Wallet certificates vs explorer labels and analytics
Owner proof, explorer labels and analytics: what each really tells you.
Ways to prove wallet ownership, compared
Screenshot, test payment, signed message or certificate: which to use.
How to prove you own a Bitcoin address
Sign a message with the address's key: free, instant, nothing on the blockchain.
How to sign a message with a Bitcoin wallet
Step by step in Xverse, Electrum, Sparrow, Trezor, Ledger and Bitcoin Core.
BIP-322 vs BIP-137: Bitcoin message signing explained
Why there are two formats, which wallets use which, and why Taproot needs BIP-322.
How to prove you own an Ethereum wallet
One signed message, no gas, and it covers every EVM network at once.
How to prove you own a Cosmos wallet
Sign an ADR-036 message in Keplr or Cosmostation: no transaction, no fee.
How to prove you own a Sui wallet
Sign a personal message in Slush, Suiet, Phantom or Nightly: no transaction, no fee.
How to prove you own an Aptos wallet
Sign a message in Petra, Nightly or Pontem: no transaction, no fee.
How to prove you own a Cardano wallet
Sign a CIP-8 message in Eternl, Lace, Yoroi or Vespr: no transaction, no fee.
How to prove you own an XRP wallet
Sign a message in GemWallet or Crossmark: no transaction, no XRP spent.
How to prove you own a TON wallet
Approve one TON Connect request in Keeper or Walt: no transaction, no fee.
How to prove you own a Dogecoin, Litecoin or Bitcoin Cash address
Sign a message in Dogecoin Core, Electrum-LTC or Electron Cash: free, no transaction.
How to prove you own a Tron (USDT) wallet
Sign a message in TronLink: no transaction, no TRX burned, works for USDT addresses.
Is it safe to sign a message with your wallet?
How to tell a harmless message from an approval or permit in disguise.
Proof of wallet ownership: what it is and who asks for it
Who asks for it, the common methods compared, and what makes proof easy to check.
How to check a wallet certificate yourself
What the certificate page checks, and how to verify both signatures without us.
Looking for which wallet to install? See the wallet guide.
Get a certificate for your wallet in about two minutes.