Topic: May I ask, how can I securely store USDT, USDC, DAI? - page 3. (Read 373 times)

I think you overcomplicated the vulnerability scenario. With a hardware wallet (as the main wallet) JUST for storing it should be pretty safe if you know what its purpose of such a wallet is.

A tip for interacting with smart contracts is to use another software wallet like metamask on another device with a small balance (do not connect your hardware wallet directly).

It's not as complicated as you said. I'd been storing my USDT for several years. I just keep it on my offline computer which is not connected to the internet, i connect it once i need it to send it out from that device.
I just store it on mycrypto wallet(desktop wallet) that can generate a new wallet in offline mode. The main key to store anything safe in your wallet is you must try to protect your wallet from storing it in the device that is always used to connect into the various sites.
The hackers have various ways to steal your money. I just do that and nothing happened with my money till now. It's being stored safely in my offline device.

I don't see neither are good methods to store your USDT. The key is never try to store your wallet in the device that is often in connecting to the various web3 services like defi, nft or anything else.

You can store them safely unless you put your stablecoin in DAI. You'll never what could SEC's regulation would approved. There are instances that USDT was frozen in a wallet.

DAI must be the answer although decentralization in ETH network is constantly questioned. Since there possibilities of nightmares to happen just allocate certain percentage of how much to keep on exchanges and on your private wallet.

First of all why do you want to securely store USDT, are you gonna holding for a long period of time? If yes is there any major benefit store USDT without staking it

The secure way that I know is through Hardware Wallet like Ledger. Today Hardware wallet able to save multiple network chain so you dont need to worry about it.

        For Bitcoin, multi-signature technology has undergone extensive testing and is supported by various software. Using electrum software, and both ledger and trezor hardware wallets, (or more different brand hardware wallets, like bitbox, keepkey), you can generate a multisig wallet, 2-of-2, or 3-of-5,...   Each transaction needs all signatures of different brand hardware wallets.  This is a good way to prevent individual wallet companies from doing evil. This is very very safe, and is a true decentralized solution.
        However, Unlike Bitcoin, Ethereum's multi-signature is based on smart contracts, and there have been instances of smart contract vulnerabilities where hackers have stolen tens of millions of dollars. If Genosis safe (Maybe the only software, which supports the Ethereum's multi-signature) leaves a backdoor in the contract or is successfully hacked, then the clients all die. That is, it has a single point of failure, unlike Bitcoin's multiple signatures.Moreover, there is no evidence that Genosis safe is much more reputable than Ledger and trezor. The multi-signature of Genosis safe software, then, does not provide any more security than a single hardware wallet, such as ledger or trezor!
        Another solution is that: Using trezor hardware wallet (the mnemonic word is generated myself by python, then the trezor company will never know it. This prevents a random number seed backdoor for setting mnemonics), and a third-party software in an offline environment, which provides a double-layer security protection(For BTC, the trezor never be connected to network, and the only way to reveal the mnemonic is through the two-dimensional code of trezor's signature displayed by electrum's software). However, I cannot fine a proper software, that support the trezor's signature in offline environment.
        So maybe the best choice for me is: Generate a mnemonic phrase through programming by myself, input it offline into a Trezor wallet, and use the Metamask software to read the Ethereum address offline. After that, store USDC and DAI, and use the wallet only once.

        Final question: Why do I want to store USDC, DAI, USDT? Everyone knows that the price of bitcoin has a cycle, when the price is too high, sell it for USDC and DAI, wait for the price to come down (about 1-1.5 years), and then buy back Bitcoin. A better solution would be to sell the bitcoins and exchange them for dollars or euros, or some other local currency. In my country,  cryptocurrency trading is not legal, it is easy to receive illegal  money on Binance, and bank cards will be frozen.