How to Deposit into RedotPay | A Complete Guide to Supported Assets, Blockchains, and Processing Times

"Making the Right Deposit" Is the Starting Point for Using RedotPay

When you start using RedotPay, “deposits” are, in a sense, even more important than KYC. This is because if you select the wrong chain when making a deposit, there is a risk that the crypto assets you sent will not be returned.

On this page, I’ll share everything I know about deposits—from supported assets and chains to processing times, minimum deposit amounts, and what to do if you send funds to the wrong address. By reading this, you should be able to almost certainly avoid the worst-case scenario of “losing tens of thousands of yen worth of USDT.”

Supported Crypto Assets

RedotPay supports a wide range of major crypto assets (as of May 2026).

• USDT (Tether)
• USDC (USD Coin)
• BTC (Bitcoin)
• ETH (Ethereum)
• BNB (BNB Chain)
• SOL (Solana)
• TRX (TRON)
• TON (Toncoin)
• XRP
• SUI

Of these, stablecoins (USDT/USDC) are the most convenient for everyday payments. Since they can be used for payments without the risk of price fluctuations, the deposited amount remains as "available balance."

While you can deposit volatile assets like BTC and ETH, price fluctuations can result in unrealized gains or losses, which tend to complicate tax management. If you plan to hold them for payments, we strongly recommend focusing your holdings on stablecoins.

Supported Chains — This Is Extremely Important

You can select multiple chains for each asset. Representative examples are as follows.

• USDT: TRC20, ERC20, BEP20, Polygon, Arbitrum, Solana
• USDC: ERC20, BEP20, Solana, Sui
• BTC: Bitcoin Mainnet
• ETH: ERC20, Arbitrum, Polygon, Optimism
• SOL: Solana
• TRX: TRON
• TON: Toncoin

Please note that when sending funds from domestic exchanges, the supported chains are limited. Since Coincheck and bitFlyer have limited support for USDT, it is more practical to deposit using stablecoins via global exchanges such as Bybit, OKX, or Binance.

Deposit Procedure — 6 Essential Steps

1. RedotPay Open the "Wallet" section in the app
2. Select the currency you want to deposit and tap “Deposit”
3. Select the deposit chain (make sure to choose the same chain as your sending source)
4. Enter the displayed wallet address (or QR code) into the sending exchange or wallet
5. Verify the chain and currency on the exchange side and send the funds
6. The funds will appear in your app balance within a few minutes to a few tens of minutes

A minimum deposit amount is set for each currency and chain (e.g., 1 USDT for USDT TRC20). If the amount is less than the minimum, it will not be reflected in your balance even if received, so please be sure to check before sending.

Estimated processing time

• USDT TRC20: Approx. 3–10 minutes
• USDT BEP20: Approx. 1–5 minutes
• USDT Polygon: Approx. 1–5 minutes
• USDT ERC20: 5–30 minutes (may take longer during Ethereum network congestion)
• USDT Solana: Approx. 1–3 minutes
• BTC: 30 minutes to 1 hour (6 block confirmations)
• ETH: 1–10 minutes
• SUI: Approx. 1–3 minutes

Transaction times may be longer during periods of high network congestion. If you need to make a deposit in a hurry right before traveling abroad, it is safest to choose a fast blockchain such as TRC20, BEP20, Solana, or Sui.

Estimated Network Fees

Deposit fees on the RedotPay side are zero, but blockchain network fees (gas fees) will be incurred when sending from your originating exchange or wallet.

• USDT TRC20: 1–2 USDT (Recommended)
• USDT ERC20: Several to tens of USD (during Ethereum congestion)
• USDT BEP20: Approx. 0.3 USDT (Lowest)
• USDT Polygon: Approx. 0.01 USDT equivalent (ultra-low cost)
• USDC Solana: Approx. 0.0001 SOL (negligible)

In practice, TRC20, BEP20, Polygon, and Solana are often chosen for their cost-effectiveness. Since ERC20 fees are high, it is only reasonable to use it when sending a large amount (several thousand USDT or more) at once.

I primarily use USDT TRC20. It offers a good balance between transfer speed (approx. 5 minutes), fees (1–2 USDT), and the range of supported exchanges, allowing me to operate stably with 2–3 deposits per month.

Handling Mis-Transfers — The Greatest Risk and How to Avoid It

The most common type of transfer error is sending funds to the wrong blockchain. For example, if you send USDT via ERC20 to a TRC20 address (e.g., RedotPay), it is generally unrecoverable.

This is a technical issue; while TRC20 and ERC20 addresses look different (TRC20 addresses start with “T,” while ERC20 addresses start with “0x”), and can be distinguished upon close inspection, mis-transfers occur due to insufficient verification during copy-paste or overlooking the chain selection screen.

Essential Checklist Before Sending Funds

1. Have you selected the same chain (same network) for both the sender and recipient?
2. Do the addresses match exactly (be careful not to omit the end of the address when copying)?
3. Do you meet the minimum deposit amount?
4. For currencies that require a memo or tag (such as XRP, EOS, or Stellar), have you entered the memo?

In Case of an Incorrect Transfer

In the unlikely event of an erroneous transfer, please contact RedotPay Support and the support team at the sending exchange immediately. In a small number of cases where technical recovery is possible, you may be able to retrieve your funds by paying a specified fee. However, since recovery is not guaranteed, “verifying before sending” is essential.

Best Practices — 6 Tips

Here is a summary of best practices for deposits, based on the author’s experience over more than two years of operation.

1. Test with a Small Amount

Especially for your first transfer, make a small test transfer of about 1–2 USDT, confirm receipt, and then proceed with the main transfer. This alone can prevent 95% of erroneous transfers.

2. Check Memo/Tag

Currencies such as XRP, EOS, and Stellar require the entry of a memo or tag. If you forget to include the memo, the funds will not be reflected in your balance even if they are received, so be sure to fill in the memo field.

3. Record the Transaction Hash

After the transfer is complete, make a note of the transaction hash (TX ID). You will need this if you contact support.

4. Standardize the Chain

Significantly reduce the risk of sending funds to the wrong address by selecting and sticking to a single route for sending funds from a specific exchange to RedotPay. Example: Make “From Bybit to RedotPay via USDT TRC20” your standard route.

5. Bulk Deposits

Depositing a lump sum once or twice a month is more fee-efficient than making frequent small deposits.

• 1,000 USDT via TRC20 once a month: Fees 1–2 USDT (0.1–0.2%)
• 10 times a month, 100 USDT each via TRC20: Fees 10–20 USDT (1–2%)

Understand your card usage patterns and design an appropriate bulk deposit schedule.

6. Screenshots Before and After Deposits

Taking screenshots of the transfer screen, TX ID, and the receipt screen serves as evidence in case of issues. Storing them in cloud storage allows you to access them even when you’re on the go.

Transfer Routes from Major Exchanges

I’ll share routes that I’ve personally tested and confirmed to be reliable.

• Bybit → RedotPay (USDT TRC20): Fastest and cheapest. Fee: 1 USDT; arrives in about 5 minutes
• OKX → RedotPay (USDT TRC20): Same as above, stable
• Binance → RedotPay (USDT BEP20): 0.3 USDT, arrives in about 3 minutes
• bitFlyer → RedotPay (BTC): 30–60 minutes; fees vary depending on the time

Since it is difficult to send USDT directly from domestic exchanges (Coincheck, bitFlyer, GMO Coin), a practical approach is to first purchase BTC or ETH, send them to a global exchange like Bybit, convert them to USDT there, and then send them to RedotPay.

Summary — Ensure a Successful Deposit Through “Preparation” and “Testing”

Deposits are essentially a simple process of “selecting the correct chain and sending an amount equal to or greater than the minimum.” By performing a small test deposit just once at the beginning, you can prevent almost all issues.

Deposits are a crucial step that precedes any transaction. We strongly recommend allowing ample time between completing your deposit and making your actual transaction, especially before traveling abroad or making a major purchase.

"Transferring stablecoins to RedotPay smartly, safely, and cost-effectively" — this technique is a fundamental skill applicable to the overall management of crypto assets. We hope you will master it through RedotPay.

Next, let’s delve deeper into how to use the service after depositing funds on the Fee Schedule and Apple Pay Integration pages.