Coinbase OTP: ERC20 vs TRC20 — Which is Cheaper?

Why Coinbase OTP Costs Differ by Network

When you buy a temporary SMS number to receive a Coinbase verification code, the network you choose for USDT payment directly affects your total cost. ERC20 and TRC20 are the two most common options, but they are not equal in price.

ERC20 vs TRC20: The Price Gap

ERC20 transactions typically cost between $1.50 and $5.00 in gas fees, regardless of the amount sent. TRC20 fees are fixed at $0.80 on most platforms. If you're buying a $2 SMS number, paying $3.50 in ERC20 gas makes the total $5.50 — more than double the product price. With TRC20, you pay only $2.80 total.

Real Example: January 2026

On January 15, 2026, a user purchased a Coinbase OTP number from SMSVerify.usdt. The SMS cost 2 USDT. With ERC20, the gas fee was 2.20 USDT, total 4.20 USDT. With TRC20, the fee was 0.80 USDT, total 2.80 USDT. The TRC20 option saved 33%.

When ERC20 Makes Sense

Some wallets or exchanges only support ERC20 withdrawals. If you have no choice, you can still buy the SMS, but expect higher costs. Always check your wallet's network options before purchasing.

How to Minimize Costs

1. Use TRC20 whenever possible — it's cheaper and faster.
2. Choose a provider that lists network fees clearly.
3. Buy in bulk: some sellers offer discounts for multiple numbers.

Final Verdict

TRC20 is the cheaper network for USDT payments on Coinbase OTP numbers. Always select TRC20 if your wallet supports it. If not, factor in the extra gas fee and decide if the SMS is worth the premium.