Guide

How to prove you own a Sui wallet

Sui wallets can sign a plain personal message with your account key. It isn't a transaction, costs nothing, and anyone can check it against your 0x… address.

Updated 13 Oct 2026

How it works

A Sui address is the hash of the key that controls it (and the key's type). The wallet signs our message as a Sui personal message and returns the signature with the public key; the key must hash to your address and the signature must match. Ed25519, secp256k1 and secp256r1 keys all work.

Step by step

  1. Install Slush, Suiet, Phantom or Nightly from the wallet guide.
  2. On Get certified, click Connect next to your Sui wallet.
  3. Approve the connection, then the message.

Good to know

  • zkLogin (Google sign-in) and multisig Sui accounts can't be certified yet.
  • Tier 3 on-chain screening isn't available for Sui yet. Tiers 1 and 2 are.
Get a certificate anyone can check

Sign once with your wallet: free, no transaction. We counter-sign it and give you a link anyone can verify. From $1.

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Questions

Does signing cost SUI or gas?

No. A personal message isn't a transaction, so nothing is sent and there's no fee.

My Sui and Aptos addresses look alike. Which is which?

Both are 0x and 64 characters. Connect the wallet the address belongs to; the certificate names the network.

Can I use a Ledger?

Yes, if your Sui wallet supports signing personal messages with it.