На соседней ветке спрашивал про ключ,вот мне пришло такое   Dentacoin Airdrop
Please, enter the private key of your Ethereum wallet 0xdfA123690E4a8674aD61Ee9CcD5280aF27F5674A in order to automatically sign the special encrypted message that will verify that it is actually your wallet (We will not send DCN Token to fake wallets).
Enter Your Private Key: (64 hexadecimal character)

 Note: This is safe. We DO NOT use, store or collect your personal data (such as private key). This form is fully encrypted and secured by the SSL standard and MD5 hashing protocol. No one will be able to access your wallet and you can update your wallet address.