javablockchainsmartcontractstrontrx

Transfer Tron Shielded Tokens

I'm newby to Tron network

recently I tried to transfer USDT TRC20 using Shielded contract on Nile testnet

I did every step mentioned on the document : shielded-TRC20-contract.md

I did steps until: 8. Call api: wallet/getnewshieldedaddress to generate all the related keys

and after that, I have to mint my Token to the Shielded Address

now I pass these params to wallet/createshieldedcontractparameters endpoint :

    "ovk": "72493d42a87227481b90c7174006d388b263b64a8b94ea55dbb78d59f5e45fa3",
    // the ovk I get from `wallet/getexpandedspendingkey`
    
    "from_amount": "50000",
    // I don't know what should I pass here
    
    "shielded_receives": {
        "note": {
            "value": 500,
            // I wanna to transfer 500 USDT
            
            
            "payment_address": "ztron17lk8dsfjjmpr96j3dwlz0jkwe99ejmpulrldz498aeguma477r3u48w4prnthjs04utxk3a3a40",
            //Here I pass the payment address that I get from `wallet/getnewshieldedaddress`
            
            "rcm": "68ef5a158f06734984d8e1500da86988caa6798953281adc1984808a67192c02"
            // I pass rcm that I get from 'wallet/getrcm`
        }
    },
    "shielded_TRC20_contract_address": "TXLAQ63Xg1NAzckPwKHvzw7CSEmLMEqcdj",
    // I pass the smart Contract address of USDT nil test net that I already have in my wallet
    "visible" : "True"
}

now when I send my request I got this error :

{ "Error": "class java.lang.ArithmeticException : BigInteger: modulus not positive" }

I don't know what I done wrong and What exactly should I do :/

Solution

  • Migration of ERC-20 Tron to TRX-20 MainNet

    1. Send your old TRX tokens on the ERC20 network to the migration contract address
    2. Switch your wallet (MetaMask, Ledger, or other) to the TRC20 network and ensure that the transaction is successful.