初心者向け

仮想通貨コラム

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cryptact_general

As cryptocurrency prices like Bitcoin increasingly make headlines alongside traditional stock and forex market data, more and more people are becoming curious about what cryptocurrency actually is and how it works.


 This article provides a beginner-friendly explanation of the fundamentals of cryptocurrency, including how it differs from traditional money and the technology that makes it all possible.

<h2 id="s1">
 Key takeaways
</h2>
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 Cryptocurrency is a digital asset that can be sent directly from one person to another over the internet, without banks or payment processors in between, and it works the same way across borders.
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 Unlike e-money, which is fiat currency in digital form managed by a central operator, cryptocurrency is a separate class of asset that generally runs without any central authority.
 </li>
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 Blockchain, the technology behind it, is a distributed transaction ledger: transactions are bundled into blocks, linked together in chronological order, and every participating node holds a full copy.
 </li>
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 Consensus algorithms such as Proof of Work keep that ledger trustworthy. Rewriting it would require controlling more than half of the network, known as a 51% attack, which is economically irrational on large networks like Bitcoin.
 </li>
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 Wallets manage blockchain addresses so that everyday users can hold, send, and receive cryptocurrency, though a wallet is often limited to specific blockchains or services.
 </li>
 <li>
 As an investment, cryptocurrency is far more volatile and less regulated than stocks or real estate, but it is accessible to almost anyone, tradable 24/7, and typically low in transaction costs.
 </li>
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 <li><a href="#s3">What Is Cryptocurrency?</a></li>
 <li><a href="#s4">How Does Cryptocurrency Work?</a></li>
 <li><a href="#s5">Pros and Cons of Cryptocurrency Investment</a></li>
 <li><a href="#s6">Tracking Your Crypto Gains and Losses</a></li>
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 No credit card required
 
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<h2 id="s3">
 What Is Cryptocurrency?
</h2>

 There are many different types of cryptocurrency, including Bitcoin and Ether, but what exactly is cryptocurrency and how does it differ from traditional fiat currency? Let's take a closer look.

<h3 id="s3-1">
 Cryptocurrency Is a Digital Asset You Can Trade Over the Internet
</h3>

 In simple terms, cryptocurrency is a digital asset that anyone can easily trade over the internet.


 With traditional fiat currencies (such as the US dollar or euro), sending money online requires the involvement of banks, payment processors, or other licensed financial institutions with specialized infrastructure.


 Cryptocurrency, on the other hand, allows individuals to send funds directly to one another with nothing more than an internet connection.


 Because cryptocurrency exists on the internet, it can be accessed from anywhere in the world. Sending crypto to someone across the room is just as easy as sending it to someone on the other side of the planet. This borderless nature is one of cryptocurrency's most significant features.

<h3 id="s3-2">
 How Cryptocurrency Differs from E-Money
</h3>

 One common point of confusion is the difference between cryptocurrency and electronic money (e-money) services like mobile payment apps.


 Both cryptocurrency and e-money are digital forms of "money," so they may seem similar at first glance. However, there is a fundamental difference.


 E-money is backed by fiat currency. It is simply a convenient way to use traditional money in digital form. Cryptocurrency, by contrast, is an entirely separate class of digital asset with no direct backing by any fiat currency.


 Another key difference is the presence of a central authority. E-money systems always have a central operator that manages the platform, whereas cryptocurrency networks generally do not require a central authority. Instead, they rely on sophisticated decentralized technology, where network participants (called nodes) cooperate to keep the system running.


 It is worth noting that not all cryptocurrencies are fully decentralized. Some are operated in a more centralized manner by specific organizations. The point above is a general principle about how the technology works.

<h2 id="s4">
 How Does Cryptocurrency Work?
</h2>

 The cryptocurrency ecosystem can be thought of as a massive, globally distributed network system. Without a central authority, how does it all stay running? Let's explore the three core mechanisms.

<h3 id="s4-1">
 Cryptocurrency Runs on a Blockchain
</h3>

 Cryptocurrencies like Bitcoin use a technology called blockchain.


 A blockchain is essentially a distributed transaction ledger maintained across the internet. Transaction data (called "transactions") is bundled into units called "blocks," and these blocks are linked together in chronological order like a chain, hence the name "blockchain."


 One of the blockchain's most important features is that data does not reside on a single, centralized server. Instead, every participant in the network shares a copy of the ledger. These participants are called nodes, and each node holds a complete copy of the blockchain. When a new transaction occurs, the information propagates through the network, and new blocks are added to each node's copy.


 This structure allows the entire blockchain network to function as one large, unified system.

<h3 id="s4-2">
 Transactions Are Verified by Network Participants
</h3>

 As we discussed, each node on the blockchain holds its own copy of the transaction ledger and adds new transactions to it. But what prevents a bad actor from tampering with the ledger for personal gain?


 Blockchains address this problem through mechanisms called consensus algorithms.


 For example, Bitcoin uses a consensus algorithm known as Proof of Work (PoW). In this system, the right to create a new block is awarded to the node that first solves a complex cryptographic puzzle.


 The puzzle involves finding a value called a nonce, and the problem itself is linked to the contents of both the previous block and the new block. The first node to solve the puzzle adds the new block to the chain and broadcasts the block along with the nonce to the rest of the network. Each receiving node verifies that the answer is consistent (i.e., the continuity between the old and new blocks is correct) before accepting the new block and passing it along.


 This means that even if a malicious node tries to tamper with the ledger, other nodes will reject the fraudulent block, preventing it from being reflected across the blockchain.


 To forcefully alter the blockchain, an attacker would need to control more than half of all nodes on the network. This is known as a 51% attack and is considered one of the theoretical risks to blockchain security. However, on large networks like Bitcoin, carrying out such an attack would require enormous computational resources, and the resulting damage to the network's credibility would cause prices to plummet, making it economically irrational.

<h3 id="s4-3">
 Cryptocurrency Is Stored and Used via Wallets
</h3>

 So far we have looked at the technical side of how cryptocurrency works. Now let's explore the user experience.


 While the blockchain is a distributed transaction ledger, interacting with it directly is not exactly user-friendly. That is where wallets come in.


 A blockchain contains entities called addresses, and the transaction history reveals how much cryptocurrency is held at each address. A wallet manages these addresses, allowing you to think of your cryptocurrency holdings much like cash in a physical wallet.


 Wallets also provide functions for sending cryptocurrency and generating receiving addresses. When you send crypto from your wallet, you are essentially creating and broadcasting a transaction on the blockchain.


 Thanks to wallets, everyday users can hold, send, and receive cryptocurrency with ease.


 Keep in mind that wallets are often limited to specific blockchains or specific services, so if you hold a variety of cryptocurrencies, you may need to use multiple wallets.

<h2 id="s5">
 Pros and Cons of Cryptocurrency Investment
</h2>

 How does investing in cryptocurrency compare to traditional financial assets like stocks or real estate? Here is a quick overview:

<div style="overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 1em 0;">
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 &nbsp;
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 Cryptocurrency
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 Stocks
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 Real Estate
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 Price volatility
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 Very high
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 Moderate
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 Low / gradual
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 Market maturity
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 Developing (regulations still evolving)
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 Mature (well-established rules)
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 Mature (tangible assets)
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 Track record
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 Short
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 Long
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 Very long
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 Liquidity
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 Tradable 24/7
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 Generally liquid during market hours
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 Transactions take time
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 Transaction costs
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 Often low
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 Often low
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 Very high
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 Cryptocurrency is still a relatively young asset class, and regulations continue to evolve. There are no government-backed deposit insurance schemes for crypto, making it a higher-risk investment. Markets can also be driven by news and whale (large investor) activity, leading to sharp price swings.


 On the other hand, cryptocurrency is accessible to almost anyone, can be traded in very small amounts, and transaction costs tend to be low, making it an approachable option for newcomers to investing.


 If you are interested in cryptocurrency, make sure to understand these pros and cons before making any investment decisions. Note that you may need to report gains for tax purposes in your jurisdiction.

<h2 id="s6">
 Tracking Your Crypto Gains and Losses
</h2>

 If you trade cryptocurrency, keeping track of your transactions and calculating gains or losses can quickly become complex, especially as your number of trades grows.


 <a target="_blank" rel="noopener noreferrer" href="https://www.cryptact.com/en">cryptact</a> can help simplify this process by automatically calculating your gains and losses from your transaction history.

<h2 id="s7">
 Conclusion
</h2>

 Cryptocurrency operates on fundamentally different technology and principles compared to the traditional financial system. From blockchain and consensus algorithms to wallets and decentralized networks, the infrastructure behind digital assets is both innovative and complex.


 Understanding these basics is the first step toward making informed decisions, whether you are exploring crypto as an investment or simply satisfying your curiosity about this rapidly evolving space.

As cryptocurrency prices like Bitcoin increasingly make headlines alongside traditional stock and forex market data, more and more people are becoming curious abo...

How Cryptocurrency Works: A Beginner-Friendly Guide to Blockchain and Digital Assets

【初心者向け】仮想通貨（暗号資産）の仕組みと特徴をわかりやすく解説

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NFTとは？保有・取引するメリット・デメリットを初心者向けに解説

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仮想通貨はいくらから買える？取引所別の最小購入額、少額購入のシミュレーションを紹介

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仮想通貨の勉強はここから！初心者にもおすすめの始め方と勉強法5選

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SBI VCトレード｜口座開設から入金・取引方法まで徹底解説

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GMOコインの使い方｜口座開設から入金・取引方法まで徹底解説

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bitbankの使い方｜口座開設から入金・取引方法まで徹底解説

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bitFlyerの使い方｜口座開設から入金・取引方法まで徹底解説

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Coincheck（コインチェック）の使い方｜口座開設から入金・取引方法まで徹底解説

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<h3>Hand the tedious manual work of crypto tax preparation, from importing transaction history to resolving missing data, over to AI.</h3>TOKYO, JAPAN – June 4, 2026 — cryptact, a digital asset tax platform, today announced a new write capability for the cryptact MCP Server*. Simply by connecting cryptact to AI assistants such as Claude or ChatGPT, users can complete the entire crypto tax calculation workflow, from importing transaction history to resolving missing data, through conversation alone.<h3>Background</h3>Calculating crypto gains and losses can be streamlined with software, but the preparation behind it has remained manual. Investors still had to gather transaction history across exchanges and wallets and supplement any missing information themselves.To address this with AI, cryptact released a command line interface (CLI) on April 2, 2026, followed by read capability for the MCP Server on April 16, 2026.&nbsp;<h3>What the write capability does</h3>By connecting cryptact to an AI tool such as Claude or ChatGPT, users can handle crypto tax tasks conversationally. These include:<ul><li>Importing transaction history through CSV upload, API integration, or wallet connection</li><li>Resolving unclassified transactions, including missing quantities, absent price data, and unsupported coins</li><li>Bulk-approving AI suggestions for DeFi transactions that could not be categorized automatically</li></ul>In addition, by pairing cryptact with browsing tools such as Claude in Chrome, users can also automate the collection of transaction history.&nbsp;<h3>Executive comment</h3>“We started cryptact to make crypto tax simpler. With this addition to the MCP Server, the time-consuming preparation that calculation tools alone could never eliminate can now be handed to an AI through plain conversation,” said Amin Azmoudeh, Co-CEO of pafin Inc., which operates cryptact. “I believe this is a transformative step forward towards making crypto tax preparation approachable by many more investors. We will continue refining our tools and infrastructure to underpin investing and transparency in the crypto ecosystem.”<h3>Availability</h3>The cryptact MCP Server is available to all cryptact users, including those on the free plan. Setup instructions are available on the <a target="_blank" rel="noopener noreferrer" href="https://support.cryptact.com/hc/en-us/articles/56762747250201">help page</a>.<div class="d-flex align-items-center justify-content-center m-4 text-center"><div class="gradient-btn"><div class="div-btn"><div class="inner-div-btn button-lg"><a target="_blank" rel="noopener noreferrer" href="https://www.cryptact.com/en/ai-mcp-cli">Learn more</a></div></div></div></div><h3>Use case</h3><h4>1. Transaction history upload</h4><img src="https://pafin-cortex-production.s3.ap-northeast-1.amazonaws.com/4_en_281151350d.png" alt="4-en.png" srcset="https://pafin-cortex-production.s3.ap-northeast-1.amazonaws.com/thumbnail_4_en_281151350d.png 245w,https://pafin-cortex-production.s3.ap-northeast-1.amazonaws.com/small_4_en_281151350d.png 500w,https://pafin-cortex-production.s3.ap-northeast-1.amazonaws.com/medium_4_en_281151350d.png 750w,https://pafin-cortex-production.s3.ap-northeast-1.amazonaws.com/large_4_en_281151350d.png 1000w," sizes="100vw" width="" height="">Example prompt: “Upload my Coinbase trading history to cryptact's Coinbase/Trades.”<h4>2. Automatic resolution when missing transaction history is detected</h4><img src="https://pafin-cortex-production.s3.ap-northeast-1.amazonaws.com/5_en_2a6aa53382.png" alt="5-en.png" srcset="https://pafin-cortex-production.s3.ap-northeast-1.amazonaws.com/thumbnail_5_en_2a6aa53382.png 245w,https://pafin-cortex-production.s3.ap-northeast-1.amazonaws.com/small_5_en_2a6aa53382.png 500w,https://pafin-cortex-production.s3.ap-northeast-1.amazonaws.com/medium_5_en_2a6aa53382.png 750w,https://pafin-cortex-production.s3.ap-northeast-1.amazonaws.com/large_5_en_2a6aa53382.png 1000w," sizes="100vw" width="" height=""><img src="https://pafin-cortex-production.s3.ap-northeast-1.amazonaws.com/6_en_113df69bc7.png" alt="6-en.png" srcset="https://pafin-cortex-production.s3.ap-northeast-1.amazonaws.com/thumbnail_6_en_113df69bc7.png 245w,https://pafin-cortex-production.s3.ap-northeast-1.amazonaws.com/small_6_en_113df69bc7.png 500w,https://pafin-cortex-production.s3.ap-northeast-1.amazonaws.com/medium_6_en_113df69bc7.png 750w,https://pafin-cortex-production.s3.ap-northeast-1.amazonaws.com/large_6_en_113df69bc7.png 1000w," sizes="100vw" width="" height="">Example prompt: "Please create and upload a custom file (User.Custom) to resolve the issue of coins with insufficient amounts in cryptact, treating them as purchases at their market value as of 00:00 on February 1, 2020."* MCP (Model Context Protocol) is an open protocol for connecting AI tools with external services. Proposed by Anthropic as an open standard, it is supported by a growing range of tools including Claude Desktop and ChatGPT. An MCP server is the connection point that, based on this protocol, makes the data and functions tied to an external service account available to an AI assistant. Official documentation: <a target="_blank" rel="noopener noreferrer" href="https://modelcontextprotocol.io">https://modelcontextprotocol.io</a><h3>About pafin Inc.</h3><h4>Services</h4>cryptact — Crypto tax calculations: Simplified. Automatically calculate capital gains, access all the information needed for tax filing, and efficiently manage portfolios — all in one place. Trusted by over 200,000 users. Website: <a target="_blank" rel="noopener noreferrer" href="https://www.cryptact.com/en">https://www.cryptact.com/en</a> X: <a target="_blank" rel="noopener noreferrer" href="https://x.com/CryptactGlobal">https://x.com/CryptactGlobal</a>defitact — Your Web3 Sidekick. Drop in a wallet address and instantly see every on-chain move, all in one place. Track your dApps, watch your balances shift in real time, and stay on top of your entire portfolio. Website: <a target="_blank" rel="noopener noreferrer" href="https://www.defitact.com/">https://www.defitact.com/</a>Company Name: pafin Inc. Date Founded: January 2018 Representative Directors: Amin Azmoudeh, Co-CEO / Gaku Saito, Co-CEO Location: Frontier Kojimachi 5F, Kojimachi 3-2-4, Chiyoda City, Tokyo, Japan 102-0083<h4>Media Contact</h4>Email: <a href="mailto:pr@pafin.com">pr@pafin.com</a>

cryptact released a write capability for its MCP Server. Connect it to AI tools like Claude or ChatGPT to complete crypto tax workflows through conversation.

cryptact Releases AI Integration: Complete Crypto Tax Calculations by Chatting With Claude or ChatGPT

プレスリリース

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クリプタクト、AI連携機能を公開。ClaudeやChatGPTとの会話で仮想通貨の損益計算を完結

cryptact

<h3>Bringing Crypto P&amp;L Data to AI-driven Workflows&nbsp;</h3>cryptact, the crypto tax platform used by more than 200,000 investors and operated by pafin Inc., today released an MCP server that lets AI assistants such as Claude and ChatGPT pull users' profit-and-loss and portfolio data directly from their cryptact accounts. The server gives users a new way to put their crypto data to work with AI — from analysis to automation.<h3>How It Works</h3>Using Anthropic's open MCP protocol, the cryptact MCP server connects AI assistants directly to a user's cryptact account. Once connected, users can ask questions in plain language and get back profit-and-loss summaries, portfolio data, and transaction histories.<h3>What Users Can Do</h3>At launch, the server offers ten read-only tools. Users can pull realized P&amp;L summaries by fiscal year or asset, search transactions by date or exchange, and check portfolio holdings with current market values and cost basis.For example, a user can ask an AI assistant "Show me my 2025 BTC realized gains," retrieve the annual P&amp;L summary from their cryptact account, and use it for further analysis or automation — all within the AI assistant.<h3>Part of a Broader Push</h3>The MCP server is the second new access channel. On April 2, <a target="_blank" rel="noopener noreferrer" href="https://www.cryptact.com/en/news/cryptact-cli-en">cryptact released a command-line interface (CLI) </a>for developers who prefer terminal workflows. The MCP server broadens the reach further: anyone with an AI assistant can query their cryptact data in plain language — no coding or API calls needed.Future releases will add write capabilities, including transaction editing and transaction history file uploads.<h3>Availability</h3>The MCP server is free for all cryptact users, regardless of plan tier. Setup instructions are available at the <a target="_blank" rel="noopener noreferrer" href="https://support.cryptact.com/hc/en-us/articles/56762747250201">help page</a>.<h3>About pafin Inc.</h3><h4>Services</h4>cryptact — Crypto tax calculations: Simplified. Automatically calculate capital gains, access all the information needed for tax filing, and efficiently manage portfolios — all in one place. Trusted by over 200,000 users. Website:&nbsp;<a target="_blank" rel="noopener noreferrer" href="https://www.cryptact.com/en">https://www.cryptact.com/en</a> X:&nbsp;<a target="_blank" rel="noopener noreferrer" href="https://x.com/CryptactGlobal">https://x.com/CryptactGlobal</a>defitact — Your Web3 Sidekick. Drop in a wallet address and instantly see every on-chain move, all in one place. Track your dApps, watch your balances shift in real time, and stay on top of your entire portfolio. Website: <a target="_blank" rel="noopener noreferrer" href="https://www.defitact.com/">https://www.defitact.com/</a>Company Name:&nbsp;pafin Inc. Date Founded:&nbsp;January 2018 Representative Directors:&nbsp;Amin Azmoudeh, Co-CEO / Gaku Saito, Co-CEO Location:&nbsp;Frontier Kojimachi 5F, Kojimachi 3-2-4, Chiyoda City, Tokyo, Japan 102-0083 Media Contact Email:&nbsp;<a href="mailto:pr@pafin.com">pr@pafin.com</a>

cryptact released an MCP server that lets AI assistants pull users' profit-and-loss and portfolio data directly from their cryptact accounts.

cryptact Launches MCP Server for AI Assistants

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AIアシスタントと連携するMCPサーバーを公開

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仮想通貨の確定申告、ツールの有無で負担感に約1.6倍の差

<h3>Bringing industry-leading crypto tax calculation to automated and agentic workflows</h3>cryptact, the crypto tax platform operated by pafin Inc., today released a command-line interface (CLI) that gives developers and power users direct access to its profit-and-loss calculation engine. The tool works from any terminal and is compatible with AI coding environments such as Claude Code.The cryptact CLI lets users upload exchange files, trigger gain-and-loss calculations, search transaction histories, and export results without leaving the command line. The same commands can be invoked by AI coding tools, trading scripts, and automated workflows.cryptact will also release a <a target="_blank" rel="noopener noreferrer" href="https://modelcontextprotocol.io/docs/getting-started/intro">Model Context Protocol (MCP) server</a> in April 2026, enabling non-technical users to interact with cryptact through chat-based AI assistants.<h3>Background</h3>Accurate cryptocurrency tax reporting demands deep expertise in both blockchain technology and national tax codes. cryptact has spent eight years encoding that expertise into a calculation engine that aggregates data from over 175 sources — including major exchanges and blockchains — and computes realized gains and losses under the tax rules of Japan, Canada, and India.As AI-powered tools become a standard part of everyday workflows, the company has packaged that engine into interfaces that AI tools can call directly — starting with the CLI released today.<h3>How It Works</h3>Users authenticate once via OAuth in their browser, after which the cryptact CLI stores credentials locally.&nbsp;Below are representative examples of what the tool can do.Upload an exchange transaction file:<div style="border-radius:8px;box-shadow:0 4px 16px rgba(0,0,0,0.35);font-family:'SF Mono','Menlo','Consolas','Liberation Mono',monospace;font-size:0.85em;margin:1em 0 1.5em;overflow:hidden;"><div style="background-color:#3a3a3a;line-height:1;padding:8px 14px;">●●●</div><div style="background-color:#1e1e2e;color:#cdd6f4;line-height:1.7;overflow-x:auto;padding:16px 20px;white-space:pre-wrap;">
$ cryptact exchange file-upload trades.csv --exchange-file-id User.Custom File "trades.csv" uploaded successfully.
 </div></div>Search recent transactions:<div style="border-radius:8px;box-shadow:0 4px 16px rgba(0,0,0,0.35);font-family:'SF Mono','Menlo','Consolas','Liberation Mono',monospace;font-size:0.85em;margin:1em 0 1.5em;overflow:hidden;"><div style="background-color:#3a3a3a;line-height:1;padding:8px 14px;">●●●</div><div style="background-color:#1e1e2e;color:#cdd6f4;line-height:1.7;overflow-x:auto;padding:16px 20px;white-space:pre-wrap;">
$ cryptact transaction search --limit 3 UUID Date Action Pair Volume Price a1b2c3d4 2025-03-15 BUY BTC/USD 0.50 90,000 e5f6g7h8 2025-06-20 SELL BTC/USD 0.25 102,000 c9d0e1f2 2025-09-10 BUY ETH/USD 12.00 2,000 (1,247 transactions)
 </div></div><h3>Availability</h3>The cryptact CLI is available today to all cryptact subscribers, including Free plan users. Check out our GitHub documentation for installation steps and usage examples.<div class="d-flex align-items-center justify-content-center m-4 text-center"><div class="gradient-btn"><div class="div-btn"><div class="inner-div-btn button-lg"><a target="_blank" rel="noopener noreferrer" href="https://github.com/pafin-inc/cryptact-cli">Get Started with the CLI</a></div></div></div></div><div class="boilerplate"><h3>About pafin Inc.</h3>Services cryptact — Crypto tax calculations: Simplified. Automatically calculate capital gains, access all the information needed for tax filing, and efficiently manage portfolios — all in one place. Trusted by over 200,000 users.Website: <a target="_blank" rel="noopener noreferrer" href="https://www.cryptact.com/en">https://www.cryptact.com/en</a> X: <a target="_blank" rel="noopener noreferrer" href="https://x.com/CryptactGlobal">https://x.com/CryptactGlobal</a>Company Name: pafin Inc. Date Founded: January 2018 Representative Directors: Amin Azmoudeh, Co-CEO / Gaku Saito, Co-CEO Location: Frontier Kojimachi 5F, Kojimachi 3-2-4, Chiyoda City, Tokyo, Japan 102-0083</div><div class="contact">Media Contact Email: <a href="mailto:pr@pafin.com">pr@pafin.com</a></div>

cryptact release a CLI that allows users to access cryptact’s profit-and-loss calculation functions from Tarminal and AI coding tools.

cryptact launches CLI for you and your AI agent

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クリプタクト、AIコーディングツールから仮想通貨の損益計算が可能なCLIを公開

We are pleased to announce that cryptact now supports profit and loss calculation for Wallet of Satoshi.Demand for instant, low-fee payments and transfers using Lightning Network, Bitcoin’s layer 2 technology*1, continues to grow. In November 2025, monthly transaction volume was estimated at USD 1.1 billion from 5.22 million transactions*2. Wallet of Satoshi is a widely used wallet that supports the Lightning Network. It has surpassed 1 million total downloads.cryptact has now added support for importing the transaction history CSV for Wallet of Satoshi custodial and self-custody wallets. This enables users to calculate profit and loss on bitcoin used for payments accurately and efficiently by simply uploading the CSV downloaded from Wallet of Satoshi to cryptact, without having to manually organize transaction history for tax filing purposes.Please refer to the help page below for instructions on how to obtain your transaction history. <a target="_blank" rel="noopener noreferrer" href="https://support.cryptact.com/hc/en-us/articles/55318362048793">How to get trade history from Wallet of Satoshi</a>Going forward, cryptact will continue to expand support for the latest blockchains and scalability solutions to offer smooth profit and loss calculations.<h2>About Wallet of Satoshi</h2>Wallet of Satoshi (WoS) is a Bitcoin and Lightning wallet app for iOS and Android designed with a focus on simplicity and user experience. It supports Lightning Network payments and can also send directly to on-chain Bitcoin addresses, automatically detecting the payment type from a QR code.&nbsp; Alongside its custodial experience, WoS introduced a self-custody option in 2025, where users control their own private keys.Website: <a target="_blank" rel="noopener noreferrer" href="https://www.walletofsatoshi.com/">https://www.walletofsatoshi.com/</a>*1 A layer 2 solution that enables instant, low-fee payments while maintaining Bitcoin’s non-custodial nature. *2 Sam Wouters, River Financial Inc., “<a target="_blank" rel="noopener noreferrer" href="https://x.com/SDWouters/status/2024507942708351443">Bitcoin’s Lightning Network exceeds $1 billion in monthly volume</a>” (February 20, 2026)Contacts: <a href="mailto:pr@pafin.com">pr@pafin.com</a>&nbsp;

cryptact now supports profit and loss calculations for Wallet of Satoshi.

Wallet of Satoshi Now Supported by cryptact

ニュース

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ビットコインLightning Networkウォレットの「Wallet of Satoshi」の損益計算に対応

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「計算デビュー割」キャンペーン開始。7%OFFクーポンで自分の損益を正確に

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仮想通貨の「無料税金シミュレーション」完了で7%OFFクーポンをプレゼント

We are pleased to announce that cryptact now supports profit and loss calculation for Plasma, HyperEVM, World, Mantle, Celo, and Abstract.By syncing wallet addresses on blockchains supported by cryptact’s DeFi features, users can automatically import deposit and withdrawal histories and perform tax-related profit and loss calculations by selecting the appropriate transaction type. These capabilities eliminate the need for users to create transaction records manually or through Excel files, enabling accurate P&amp;L calculations and tax filing even when using new blockchains.As a result of this update, cryptact now supports 34 blockchains.For further details on the DeFi features, please refer to the Help Page below. <a target="_blank" rel="noopener noreferrer" href="https://support.cryptact.com/hc/en-us/articles/5482686022425-DeFi-User-Guide-for-cryptact-s-DeFi-Feature">DeFi: User Guide for cryptact’s DeFi Feature</a> <a target="_blank" rel="noopener noreferrer" href="https://support.cryptact.com/hc/en-us/articles/49814273883929">DeFi: Our Support Guidelines for DeFi</a>Going forward, cryptact will continue to expand support for the latest blockchains and scalability solutions to offer smooth profit and loss calculations.About Plasma Plasma is an EVM-compatible Layer 1 blockchain specialized in global stablecoin payments. It enables fee-free transfers of USDT, the world’s most liquid stablecoin, and its infrastructure is optimized for the scale, speed, and reliability required for stablecoin transactions.&nbsp; Plasma, <a target="_blank" rel="noopener noreferrer" href="https://docs.plasma.to/docs/get-started/introduction/start-here">https://docs.plasma.to/docs/get-started/introduction/start-here</a>About HyperEVM HyperEVM is an EVM-compatible blockchain layer provided by Hyperliquid, a decentralized exchange (DEX) specializing in perpetual futures trading. It shares the same blockspace as Hyperliquid, enabling decentralized applications (DApps) to be built with access to its mature liquidity and on-chain order book. HyperEVM, <a target="_blank" rel="noopener noreferrer" href="https://hyperliquid.gitbook.io/hyperliquid-docs/hyperevm">https://hyperliquid.gitbook.io/hyperliquid-docs/hyperevm</a>About World Chain World Chain is a Layer 2 network built on the OP Stack, centered around “Proof of Personhood (PoP)” through World ID. Its companion application, World App, aims to deliver the world’s largest digital identity and financial network to one billion people. As the financial infrastructure of this ecosystem, World Chain plans to implement unique features such as bot prevention using ID verification and gas-free transactions for verified users. World chain, <a target="_blank" rel="noopener noreferrer" href="https://world.org/world-chain">https://world.org/world-chain</a> <a target="_blank" rel="noopener noreferrer" href="https://docs.world.org/world-chain/quick-start/why">https://docs.world.org/world-chain/quick-start/why</a>About Mantle Mantle Network is an L2 network that aims to solve the trilemma of scalability, security, and decentralization. It builds a three-layer modular blockchain that utilizes Optimistic Rollup and EigenLayer’s Data Availability (DA) layer. By separating execution, consensus, and data availability, Mantle aims to achieve an efficient and secure blockchain. Mantle, <a target="_blank" rel="noopener noreferrer" href="https://www.mantle.xyz/">https://www.mantle.xyz/</a>About Celo Celo is an Ethereum Layer 2 blockchain engineered for real-world use cases. Built upon the OP Stack, it inherits Ethereum’s security while achieving one-second block finality and transaction fees of less than one cent. Fully compatible with the Ethereum Virtual Machine (EVM), Celo allows direct deployment of Ethereum smart contracts. The network also offers native stablecoins such as cUSD and cEUR, enabling efficient on-chain payments and financial interactions. Celo, <a target="_blank" rel="noopener noreferrer" href="https://docs.celo.org/home">https://docs.celo.org/home</a>About Abstract Abstract is a Layer 2 blockchain built on Ethereum that leverages zero-knowledge rollup technology to deliver low fees, high scalability, and strong security. Designed with a particular focus on “the consumer experience”, Abstract Global Wallet (AGW) enables seamless logins using email addresses, social media accounts, and passkeys. With these features, Abstract aims to accelerate the mass adoption of Web3, especially across consumer-oriented applications such as games and social platforms. Abstract, <a target="_blank" rel="noopener noreferrer" href="https://blog.abs.xyz/blog/articles/what-is-abstract">https://blog.abs.xyz/blog/articles/what-is-abstract</a> <a target="_blank" rel="noopener noreferrer" href="https://docs.abs.xyz/overview">https://docs.abs.xyz/overview</a>Contacts: <a href="mailto:pr@pafin.com">pr@pafin.com</a> &nbsp;

cryptact now supports profit and loss calculations for transactions on Plasma, HyperEVM, World, Mantle, Celo, and Abstract.

Plasma, HyperEVM, World, Mantle, Celo, and Abstract Now Supported by cryptact

Plasma-HyperEVM-World-Mantle-Celo-Abstract

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Plasma, HyperEVM, World, Mantle, Celo, Abstract対応のお知らせ

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日本円建てステーブルコイン「JPYC」総額220万円分プレゼントキャンペーンを実施

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ブロックチェーン対応拡大キャンペーン開催。暗号資産の確定申告をもっとラクに。5%OFFクーポン配付

We are pleased to announce the launch of an auto-renewal discount as a special benefit for customers who continue to use cryptact over the long term. This benefit applies to customers who use our service for more than one year. The count of consecutive years toward the discount began on September 9, 2024, at 9:00 AM (JST). Starting September 9, 2025, eligible customers will have the discount automatically applied upon renewal.When you continue your paid cryptact plan through auto-renewal, the Auto-renewal discount will be applied. The discount rate varies depending on the length of continuous service, with a maximum discount of 20%. By choosing automatic renewal, you can enjoy our service at a better value, so we encourage you to take advantage of this opportunity.<h3>[Start Date for Counting Duration]</h3>The date of payment for the applicable plan purchased* on or after 9am September 9, 2024 * Includes new purchases, purchases via auto-renewal, and plan upgrades.<h3>[Discount Rate]</h3><ul><li>Auto-renewal after 1 year from the start date: 10% discount</li><li>Auto-renewal after 2 years from the start date: 15% discount</li><li>Auto-renewal after 3 or more years from the start date: 20% discount</li></ul><h3>[Applicable Plans]</h3>Paid plans of Prime and above<h3>[Discount Eligibility]</h3>The discount is automatically applied when paid plan of Prime and above is automatically renewed. No action is required from the customer.<h3>[Conditions]</h3>The customer must continue to be subscribed to one of the applicable plans. If the plan expires or is changed to a non-eligible plan, the discount-eligible duration will be reset.Note: The automatic renewal discount applies only to credit card payments. Bank transfers are not eligible because they do not renew automatically.&nbsp;<h3>[How to confirm the discount rate]</h3>After logging in to cryptact, click on “Plan &amp; Billing” You can check the discount rate that will be applied at the time of your next automatic renewal under the section for your current plan.<img src="https://pafin-cortex-production.s3.ap-northeast-1.amazonaws.com/confirmation_for_auto_renew_69ed8acc54.png" alt="confirmation for auto renew.png" srcset="https://pafin-cortex-production.s3.ap-northeast-1.amazonaws.com/thumbnail_confirmation_for_auto_renew_69ed8acc54.png 245w,https://pafin-cortex-production.s3.ap-northeast-1.amazonaws.com/small_confirmation_for_auto_renew_69ed8acc54.png 500w,https://pafin-cortex-production.s3.ap-northeast-1.amazonaws.com/medium_confirmation_for_auto_renew_69ed8acc54.png 750w,https://pafin-cortex-production.s3.ap-northeast-1.amazonaws.com/large_confirmation_for_auto_renew_69ed8acc54.png 1000w," sizes="100vw">Please refer to <a target="_blank" rel="noopener noreferrer" href="https://support.cryptact.com/hc/en-us/sections/36434924929561-Auto-renewal-discount">here</a> for frequently asked questions about other auto-renewal discount.We are dedicated to improving our services so that you can enjoy using cryptact for many years to come.&nbsp;Thank you for your continued trust and support.

A special benefit for customers who use our service over the long term will be starting from September 9, 2025.

Auto-Renewal Discount Now Available!

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自動更新割引の適用開始のお知らせ

Thank you for using cryptact. We are pleased to inform you that a new feature has been added to Live View.<h3>New Feature: Show historical position</h3>A new function has been added to the Live View screen that allows you to display your historical position. With this update, you can easily select a specific date and check your balance as of that day.This feature is especially useful when you want to know “How much did I hold on that day?” (You can access the Live View feature <a href="https://grid.cryptact.com/live-view/exchange">here</a>.)<img class="image_resized" style="width:83.59%;" src="https://pafin-cortex-production.s3.ap-northeast-1.amazonaws.com/image_354a42ecc3.png">*To use the Live View feature, you will need to give your consent on the Live View screen the first time only. Please note that Live View is available only for exchanges that support API integration.*If a sync error occurs during API integration, the information displayed may be inaccurate. Please make sure that no errors are occurring before using the feature.If you are using the Live View feature for the first time, please see <a href="https://support.cryptact.com/hc/en-us/articles/38992563567385-Introduction-to-Live-View-Feature">this page.</a>The updated features are available <a href="https://grid.cryptact.com/">here.</a>

crypto tax calculations: Simplified.  ■New Feature Released: Check Your Past Asset Balances

New Feature Added to Live View – Check Historical Position by Date

機能アップデート

ライブビューに新機能追加 – 日付を指定して過去の残高を確認

We are pleased to announce that cryptact has added profit and loss calculation support for Sei, a Layer 1 blockchain, as the second phase of <a href="https://www.cryptact.com/news/Kudasai-collaboration">our collaboration with KudasaiJP, Japan's largest Web3 community, and Omakase Co., Ltd</a>. For DeFi transactions covered by cryptact’s DeFi dictionary, users can simply sync their wallet address to automatically retrieve their deposit and withdrawal history, after which the system identifies the transaction types and completes the tax-related profit and loss calculations.cryptact, KudasaiJP, and Omakase Co., Ltd. have been working together to support community members with their tax returns through <a href="https://www.pafin.com/news/news-event-announce-250123">AMA session on social media</a> and <a href="https://www.pafin.com/news/news-event-announce-250227">live broadcast on YouTube</a>, and <a href="https://www.cryptact.com/en/news/pr-support-berachain-en">Berachain support</a>.&nbsp; This blockchain support is part of that ongoing collaboration. With this update, DeFi users can now accurately and efficiently calculate their profits and losses on transactions conducted on Sei, streamlining the tax return process.For more details about DeFi features, please refer to our <a href="https://support.cryptact.com/hc/ja/articles/5482686022425">help page</a>.Going forward, cryptact will continue to expand support for the latest blockchains and scalability solutions to offer smooth profit and loss calculations.<h3>About Sei</h3>Sei is a Layer 1 blockchain that provides high-performance infrastructure for the digital asset market. Since its mainnet launch in 2023, Sei has processed billions of transactions across over 35 million wallets. Now running on Devnet, the V3 Giga update enhances performance and offers a groundbreaking new scaling solution for the Ethereum ecosystem. The team is backed by Multicoin, Jump, Coinbase Ventures, and many more.To learn more about Sei, please visit <a href="https://www.seifdn.org">https://www.seifdn.org</a>.&nbsp; Contacts: <a href="mailto:pr@pafin.com">pr@pafin.com</a>

cryptact now automates profit and loss calculations for transactions on Sei.

Sei Now Supported by cryptact, in Collaboration with KudasaiJP and Omakase Co., Ltd.

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KudasaiJPおよびOmakaseとの連携に伴うSEIチェーン対応のお知らせ

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7万人以上が利用した仮想通貨の税金シミュレーション、新税制および個人事業主に対応

We are pleased to announce that we have completed the following updates to our service. &nbsp;<h3>New Supported Exchange: BTSE</h3><ul><li>BTSE:<ul><li>File support: Spot Trades, and Lending Rewards.</li></ul></li></ul><h3>New File Support: CoinSwitch</h3><ul><li>CoinSwitch: Support files for Trades, and Futures files.</li></ul><h3>File Additional Support/Improvements: bitFlyer, Coincheck, CoinDCX, NEXO</h3><ul><li>bitFlyer: Supported "貸借料" and "返還" in the Trade file (Relevant file fields: Type).</li><li>Coincheck: In the industry-standard format file, the hard fork history of LSK is not reflected because the old and new LSK are treated as the same coin.</li><li>CoinDCX: Updated file time zone.</li><li>NEXO: Supported header change for Futures file</li><li>NEXO: Supported “LIQUIDATION FEE,” "MARKET_CLOSE," and “MARKET_OPEN” &nbsp;in the Futures file (Relevant file fields: Type).</li></ul>The updated features are available <a href="https://grid.cryptact.com/">here.</a>&nbsp;

Crypto tax calculations: Simplified.  ■New Supported Exchange: BTSE ■New File Support: CoinSwitch ■Others



Now Supporting BTSE and CoinSwitch Files

bitFlyerすべての取引ファイルの「貸借料」、「返還」に対応

We are pleased to announce that cryptact have added support for Berachain.&nbsp;&nbsp; With this support, cryptact now automates profit and loss calculations for transactions on Berachain.<a href="https://www.cryptact.com/news/Kudasai-collaboration">As part of our collaboration with KudasaiJP, Japan's largest Web3 community, and Omakase Co., Ltd.,</a> cryptact now supports profit and loss calculation for Berachain1 transactions.&nbsp;&nbsp; For DeFi transactions covered by cryptact’s DeFi dictionary, users can simply sync their wallet address to automatically retrieve their deposit and withdrawal history, after which the system identifies the transaction types and completes the tax-related profit and loss calculations without any manual input. KudasaiJP and Omakase Co., Ltd. and cryptact have been working together to support community members with their tax returns through <a href="https://www.pafin.com/news/news-event-announce-250123">AMA session on social media</a> and <a href="https://www.pafin.com/news/news-event-announce-250227">live broadcast on YouTube</a>. This blockchain support is part of that ongoing collaboration. With this update, KudasaiJP community members and DeFi users can now accurately and efficiently calculate their profits and losses on transactions conducted on Berachain, streamlining the tax return process.For more details about DeFi features, please refer to our <a href="https://support.cryptact.com/hc/ja/articles/5482686022425">help page</a>.Going forward, cryptact will continue to expand support for the latest blockchains and scalability solutions to offer smooth profit and loss calculations.<h3>About Berachain</h3>Berachain is an Ethereum Virtual Machine (EVM)-compatible Layer1 blockchain built using the Cosmos SDK. Its mainnet launched in February 2025.&nbsp;&nbsp; With over $3 billion in Total Value Locked (TVL), it ranks as the seventh-largest blockchain2.1 Berachain: <a href="https://www.berachain.com/">https://www.berachain.com/</a>&nbsp;&nbsp; 2 DefiLlama, April 2025: <a href="https://defillama.com/chains">https://defillama.com/chains</a>Contacts: <a href="mailto:pr@pafin.com">pr@pafin.com</a>

cryptact now automates profit and loss calculations for transactions on Berachain.

Support for Berachain in Collaboration with KudasaiJP and Omakase Co., Ltd.

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KudasaiJPおよびOmakaseとの連携に伴うBerachain対応のお知らせ

We are pleased to announce that we have completed the following updates to our service. &nbsp;<h3>File Additional Support/Improvements: Bitget, SBI VC Trade</h3><ul><li>Bitget: Supported “Trial bot profit” in the Trades file &nbsp;(Relevant file fields: Type).</li><li>SBI VC Trade: Adjusted so that "出金・出庫（調整）" in the Cashflow file is not reflected (Relevant file field:入出金の種別 ).</li></ul><h3>Live View Feature Additional Support/Improvements: Bybit, Gate.io&nbsp;</h3><ul><li>Bybit: Positions related to on-chain earn positions are now displayed.</li><li>Gate.io: Isolated margin positions are now displayed by asset pair.</li></ul>The updated features are available <a href="https://grid.cryptact.com/">here.</a>&nbsp;

Crypto tax calculations: Simplified.  ■File Additional Support/Improvements: Bitget, SBI VC Trade ■Others



Support the new transaction types in Bitget and SBI VC Trade files

Bitgetのファイルにおける新しい取引種類に対応

We are pleased to announce that we have completed the following updates to our service. &nbsp;<h3>File Additional Support/Improvements: Coincheck, crypto.com</h3><ul><li>Coincheck: If “Staking Reward” is noted in the 備考 column of the industry-standard format, we support “受取” in the 取引種別 column (Relevant file field: 取引種別, 備考).</li><li>crypto.com: Supported "crypto_wallet_swap_credited" and "crypto_wallet_swap_debited" in the App file (Relevant file fields: Transaction Kind).</li></ul>The updated features are available <a href="https://grid.cryptact.com/">here.</a>&nbsp;

Crypto tax calculations: Simplified.  ■File Additional Support/Improvements: Coincheck, crypto.com


Support the new transaction types in Coincheck and crypto.com files

Coincheckとcrypto.comのファイルにおける新しい取引種類に対応

We are pleased to announce that we have completed the following updates to our service. &nbsp;<h3>Unified Support for Coincheck file formats</h3><ul><li>Coincheck:<ul><li>We have unified the previously supported 'Trading History', 'Reserve', and 'Lending' files into a single Industry Standard Format.</li></ul></li></ul><h3>File Additional Support/Improvements: Bybit, CoinEx, EXODUS</h3><ul><li>Bybit: Supported header changes for Funding Account History&nbsp;</li><li>CoinEx: Improved the handling of "Swap" and "Swap Fee" entries in the asset history file (Relevant file field: Operation).</li><li>EXODUS: Adjusted so that "deposit (failed)" in the wallet history file are not reflected.</li></ul>The updated features are available <a href="https://grid.cryptact.com/">here.</a>

Crypto tax calculations: Simplified.  Unified support for Coincheck file formats

Unified Support for Coincheck File Formats

Coincheckのファイル対応を統合

We are pleased to announce that we have completed the following updates to our service. &nbsp;<h3>New File Support: Nexo Pro</h3><ul><li>Nexo Pro: Futures file.</li></ul><h3>File Additional Support/Improvements: CoinEx, Bybit, GMO Coin</h3><ul><li>CoinEx: Adjusted so that "契約振替" and "金融口座への振り替え" in the Asset History file are not reflected (Relevant file field: Operation).</li><li>Bybit: Supported header changes for Copy Trading file.</li><li>GMO Coin: Improved processing of "Staking" and "Staking Fees" in Trades file.</li></ul>The updated features are available <a href="https://grid.cryptact.com/">here.</a>

Crypto tax calculations: Simplified.  ■New File Support: Nexo Pro ■File Additional Support/Improvements: CoinEx, Bybit, GMO Coin



Support Nexo Pro Futures File

Nexo ProのFuturesファイルに対応

We are pleased to announce that we have completed the following updates to our services. &nbsp;<h3>New API Support: CoinEx</h3><ul><li>CoinEx: Futures</li></ul><h3>File Additional Support/Improvements: Bitbank, BITPOINT, Bybit, Probit, Poloniex, SwissBorg</h3><ul><li>Bitbank: Supported format changes for Exchange files and Exchange Margin files.</li><li>BITPOINT: Supported cases where "ステーキング報酬" in the Spot Trades file are received in JPY (Relevant file field: 取引種類).</li><li>Bybit: Supported "Deposit" and "Coin Purchase" in the Funding Account History file when the Coin is "EUR" (Relevant file fields: Coin, Description).</li><li>Probit: Supported new headers in Trades and Transfer files.</li><li>Poloniex: Supported header changes in the Withdrawals file.</li><li>SwissBorg: Adjusted so that "Redemption" and "Subscription" in the Account Statement file are not reflected (Relevant file field: Type). &nbsp;</li></ul>The updated features are available <a href="https://grid.cryptact.com/">here.</a>

Crypto tax calculations: Simplified.  ■ Support CoinEx API for Futures ■ File Additional Support/Improvements: Bitbank, BITPOINT, Bybit, Probit, Poloniex, SwissBorg

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