I sent TUSD to my Bittrex holdings to trade for other coins, but it never went into my account with Bittrex. They claim that I sent it to the wrong address. I am trying to recover these tokens so that I don't become homeless again, but as a novice, am finding this to be extremely difficult. I am presently trying to send these same ETH/ERC20 tokens back to my Nano Ledger X via MyEtherWallet.com, but I need the ABI/JSONInterface and don't know where to find that. I am not including the TXID or the EtherScan.io URL here because, as a novice, I don't know if that is a security risk. Thank you in advance for any help that you may be able to provide.
The ERC-20 is a public standard which means contracts all have to support the identical ABI. You'll find the ERC-20 ABI on many places online, e.g., https://github.com/ethereum/wiki/wiki/Contract-ERC20-ABI.
As a general rule, if you want to communicate with a contract that does not follow any standards, you will need the ABI from the creator of the contract somehow. Verified contracts on Etherscan provide the ABI under the 'Contract' tab.
I am not including the TXID or the EtherScan.io URL here because, as a novice, I don't know if that is a security risk.
That's all public information and not a security risk.