Exchange-Guide on Mainnet.jp

Summer 2026 Exchange Selection Guide: Trading Smart in a Bull Market

Fri, 03 Jul 2026 10:00:00 +0900

With the summer 2026 crypto market heating up, many new traders are entering the space. Choosing the right exchange from dozens of options can be overwhelming. This guide covers key factors for selecting an exchange and tips for safe trading this summer.

How to Choose an Exchange

1. Security Standards

Security is the top priority when selecting an exchange. In 2026, all major Japanese exchanges operate under strict FSA regulations, requiring segregated customer asset management and regular external audits. Check for:

2026 Guide: How to Choose a Crypto Exchange and Stay Secure

Mon, 29 Jun 2026 14:00:00 +0900

Choosing the right crypto exchange is the first major decision every crypto investor faces. As of 2026, Japan has over 20 registered exchanges, each with distinct features. This guide explains how to evaluate exchanges and what security measures you should take as a user.

Exchange Evaluation Criteria

Check Registration

Always verify that the exchange is registered with Japan’s Financial Services Agency (FSA). Operating a crypto exchange without registration is illegal in Japan, and unregistered platforms pose extreme risks. The FSA publishes an updated list of registered operators on its website.

What is the Travel Rule? Remittance Restrictions and Latest Rules

Wed, 17 Jun 2026 16:00:00 +0900

If you tried transferring crypto to another platform recently, you likely noticed extra declaration forms. This is caused by the FATF’s international “Travel Rule” AML guidelines. We explain how this rule impacts your transactions.

What is the Travel Rule?

An international regulatory framework requiring financial exchanges to share customer information (sender/recipient names and addresses) when assets move between platforms.

Multi-Network Split in Japan (Sygna vs. TRUST)

Japanese exchanges operate under two split notification protocols (TRUST and Sygna):

GMO Coin Bitcoin Purchase Methods and Withdrawal Steps

Sun, 14 Jun 2026 15:50:00 +0900

GMO Coin is operated by the Tokyo Stock Exchange listed GMO Internet Group. Renowned for its fee-free policies, it is highly favored by intermediate and advanced traders. We explain how to buy Bitcoin at low rates and withdraw assets to your personal wallet.

The Key Stength of GMO Coin

Free JPY Deposits & Withdrawals: Linking online bank systems lets you fund or withdraw Yen at zero cost.
Free Crypto Remittances: Unlike competitors, transferring crypto assets to MetaMask or cold storage is fee-free.

Step-by-Step Purchase Optimization (Limit Orders)

Select “Exchange Spot” (取引所現物) from the main menu.
Select “Limit Order” (指値) (this secures lower maker fees than market orders).
Set your target purchase price and quantity, then execute.

Remitting Assets to Personal Wallets

Select “Send Crypto” and add your target address (complying with Travel Rule declarations).
Input your 2FA code to execute the transfer.

How to Prepare for Exchange Insolvency Risks (Counterparty Risk)

Sat, 13 Jun 2026 16:15:00 +0900

The abrupt collapse of global giants like FTX demonstrated that no exchange is too big to fail. To protect your capital from bankruptcy freezes, you must understand counterparty risk and implement security protocols.

The Limits of Fund Segregation

Regulated exchanges in Japan trust-segregate client funds, providing strong recovery probabilities if insolvency occurs. However, bankruptcy courts can lock assets for months or years during settlement, leaving you unable to trade.

Mitigating Counterparty Risks

Minimize Exchange Exposures: If you are not actively trading, move assets to a personal cold storage wallet. (Not your keys, not your coins).
Diversify Accounts: Split your operational capital across multiple exchanges to mitigate single points of failure.
Diversify Stablecoin Holdings: Spread stablecoin positions between USDT and USDC to mitigate issuer default or de-pegging risks.

How to Configure API Sync: Connecting Auto-Trading Tools to Exchanges

Tue, 05 May 2026 16:10:00 +0900

Connecting algorithmic trading programs or portfolio tracking tools (like CoinTracking) to your exchange accounts requires “API keys.” We explain how to configure API links securely without exposing your account to theft.

What is an API Key?

A set of cryptographic credentials (API Key and Secret Key) that allows external programs to query your account data or execute trades.

Limiting API Key Permissions (Least Privilege Rule)

When generating API keys, always restrict the access rights to the bare minimum required by the tool.

Benefits of Crypto Trading via Corporate Accounts and Setup Steps

Wed, 08 Apr 2026 16:05:00 +0900

While retail crypto earnings face up to 55% tax brackets, opening a “corporate account” (法人口座) can slash your tax liability. We examine the corporate tax advantages and explain how to open a corporate trading account.

Advantages of Corporate Trading

Flat Corporate Tax Rates: Bypasses retail progressive brackets (up to 55%). Corporate tax rates are capped at roughly 30% to 34%.
Offset Against Business Losses: You can offset crypto profits against operational deficits from other business ventures.
Expanded Deductions: Write off costs like computers, mining servers, electricity, and books as business expenses.
Salary Splitting: Distribute profits to your family or yourself as directors’ salaries, lowering aggregate income tax rates.

Setup Requirements & Flow

Establish a Legal Entity (KK or GK): Complete corporate registry.
Gather Documents: Corporate registry certificate, corporate seal certificate, director ID files, and list of shareholders.
Apply at Brokerages: Submit documents to the corporate account desk of major exchanges (like GMO Coin or bitFlyer).

Latest Recommended Comparison Ranking of Domestic Crypto Exchanges

Sun, 22 Mar 2026 15:30:00 +0900

To buy cryptocurrency safely in Japan, you must register accounts with operators licensed by the Financial Services Agency (FSA). We compare the leading Japanese exchanges based on fees, security, and token listings.

Top Regulated Japanese Exchanges

1. GMO Coin

A top-tier exchange praised for its fee-free structures.

Strengths: Free Japanese Yen deposits/withdrawals and free crypto transfers. Supports order book (板取引) trading for major altcoins.

2. Coincheck

Features the most popular crypto mobile app download counts in Japan.

Benefits and Risks of Using Overseas Exchanges (Binance, Bybit etc.)

Sun, 15 Mar 2026 15:35:00 +0900

Global cryptocurrency exchanges (like Binance or Bybit) offer massive token selections and leverage. While attractive, they are unregistered with Japan’s Financial Services Agency (FSA), raising distinct risks. We analyze the advantages and dangers.

Key Advantages of Overseas Exchanges

Vast Token Directories: While Japan exchanges list around 30 coins, global portals host hundreds of emerging micro-cap altcoins.
Advanced Yield Services: Offers high-yield savings, launchpads, and liquidity mining.
No Margin Call Protection (No Debt Risk): Futures platforms feature a “zero-cut system” that voids account balances if liquidations occur, avoiding debt.

Major Associated Risks

Unregistered with the FSA: Trading platforms operating without licenses risk facing access blocks or geofencing for Japanese IPs.
Lacks Legal Asset Protection: If an overseas platform collapses, JPY assets are unprotected by Japanese financial safety nets.
Complex Tax Reporting: Gathering transaction statements and converting cross-trades complicates year-end tax calculations.

bitFlyer Account Registration Steps and Usage Guide

Thu, 22 Jan 2026 15:40:00 +0900

bitFlyer is one of Japan’s most established cryptocurrency exchanges. For beginners setting up their first digital asset account, we provide a step-by-step guide to opening an account in under 10 minutes and navigating the app.

Step-by-Step Account Opening

Input your email address on the bitFlyer landing page or app.
Configure password locks and set up SMS two-factor verification.
Provide basic profile details.

2. Complete “Quick ID Verification”

Use your phone’s camera to scan your ID card and execute a 3D facial scan. This digital system clears approvals on the same day.

How to Buy Coins in App (Important Warning)

Do Not Buy on the “Instant Buy” (販売所) Tab: While easily accessible, instant trades carry high spreads. Always select “Exchange” (取引所) or “bitFlyer Lightning” to place order book trades.

Coincheck Account Registration Steps and Important Points

Wed, 07 Jan 2026 15:45:00 +0900

Praised for its simple mobile application layout, Coincheck is the go-to exchange for crypto beginners in Japan. We walk through the exact steps to open an account and highlight critical cost-saving configurations.

Preparations Checklist

Active email address.
Smartphone.
Identity Document (My Number Card, Driver’s License, or Passport).

Account Opening Workflow

App Install & Signup: Register your account via the mobile app.
KYC Document Scan: Use the e-KYC scanner to upload photos of your ID and record a facial scan.
Approval Notification: Registration reviews typically conclude within hours, activating trading features.

Critical Coincheck Warning

Coincheck’s mobile app defaults altcoin orders to the high-spread “Instant Buy” market. When buying Bitcoin (BTC), navigate to the browser-based dashboard and use the zero-fee “Exchange” (取引所) to keep transaction costs minimal.

How to Configure 2FA and How to Recover if Your Phone is Lost

Fri, 02 Jan 2026 15:55:00 +0900

Two-Factor Authentication (2FA) is the definitive barrier protecting your exchange balance. Yet, many fear losing account access if their phone gets lost. We show you how to configure 2FA safely and recover accounts in emergencies.

Why Rely on Authenticator Apps?

SMS-based 2FA codes are vulnerable to SIM-swapping. You must utilize dedicated software authenticators (like Google Authenticator or Twilio Authy) for robust security.

The Backup Rule to Prevent Lockouts

When initializing Google Authenticator, a backup setup key (or recovery QR code) is displayed. Write this key on paper and store it offline. This recovery key allows you to restore your 2FA codes instantly on a replacement phone.