CTT joins Austrian Post, Post Luxembourg, PostNL (Netherlands), and bpost (Belgium) in a joint stamp issue dedicated to Greek Mythology.

Portugal pays tribute to Poseidon, god of the seas, with a stamp that blends tradition and innovation.

  • Crypto Stamp Poseidon (CTT)

    The Portuguese stamp is dedicated to Poseidon, God of the Seas in Greek Mythology, reinforcing Portugal’s Atlantic connection and its spirit of exploration. Innovation and tradition united in a single stamp.

  • Greek Mythology Crypto Stamp Collection

    This year, we’ve prepared a joint issue dedicated to Greek Mythology. 5 countries, 6 gods, one unique release: Crypto Stamp Poseidon (CTT), Zeus & Hera (Austrian Post), Hermes (PostNL), Artemis (Post Luxembourg), and Athena (bpost).

How to Redeem the CTT Crypto Stamp Have your Crypto Stamp and a smartphone with internet access ready.

  • Verify the authenticity of the stamp

    Activate the NFC function on your smartphone and hold it close to the stamp. The authenticity will be verified via the web.

  • Discover the digital twin (NFT)

    Use your smartphone to scan the QR Code printed on the back of the stamp to activate the digital twin. Alternatively, you can use the NFC function or visit cryptostamp.com.

  • Create a MetaMask Digital Wallet

    If you don’t yet have a digital wallet to transfer your Crypto Stamp to, go to metamask.io and install the app to create your wallet. Be sure to write down the secret recovery phrase and store it in a safe place.

  • Transfer the digital twin to your wallet

    Carefully remove the security film that contains the access code to the NFT. Go to cryptostamp.com and use the revealed code to transfer the digital twin by selecting “Transfer to my Wallet,” after connecting your digital wallet. Confirm the transaction.

  • View, trade, or collect online

    Once the digital stamp (NFT) is transferred, you can view, trade, or collect it online. Rarity is assigned randomly.

Frequently Asked Questions

What is a Crypto Stamp?

A Crypto Stamp is an innovative postage stamp that combines the physical and digital worlds:

  • Physical stamp: valid for mailing and collecting.
  • Digital stamp (NFT): a unique and authentic version registered on the blockchain.
How can I activate the NFT?
  1. By scanning the secret code/QR code on the stamp.
  2. Access the official website indicated.
  3. Enter the code and link it to your digital wallet.
Where can I see my digital stamp?

After activation: The NFT becomes visible in your digital wallet.

Does the physical stamp have postal value?

Yes.
The stamp can be used to send mail, according to the face value indicated.
Note: If you use the stamp for mailing, it will no longer be intact for collection purposes.

What are the advantages of NFTs?
  • Authenticity and rarity guaranteed via blockchain.
  • Innovative digital collecting experience.
  • Possibility to trade or sell in secondary NFT markets.
Can I sell my digital Crypto Stamp?

Yes. NFTs can be sold or transferred on compatible NFT marketplaces.
The value depends on rarity and demand.

How do I know if my Crypto Stamp is rare?

Each issue may have design or color variations in limited quantities.
Rarity can be verified after the NFT is activated.

What happens if I lose the secret code?

The code is unique and required to activate the NFT.
If it is lost or used by someone else before activation, it will not be possible to recover the NFT.