Tech implementation driven by financial expertise.
Since 2016
Knowledge Exchange
Need accounting, finance, auditing, Bitcoin, or crypto-related information?
We’ll offer it for zero fees!
All you have to do is tell us about your area of expertise and what you do best!
Tell us something we don’t know!
Approximate duration
1 session / 1-2 hours
Method of interaction
In-person or Online (Google Meet)
Participation Fee
Free
- Studio Production
We build the apps we want to use every day, focusing exclusively on our core domains of finance and accounting.
Corn Stack
Bitcoin
A privacy-first Bitcoin portfolio tracker. Features seamless BTC-to-fiat conversion tools.
Released: 2026
Permanent Traveler
Travel
An intuitive days-in-country tracker. Designed with privacy in mind to effortlessly log your global stays.
Released: 2026
Gold Finger 21
Commodities
Instantly calculate physical gold prices. A streamlined tool for effortlessly managing your bullion portfolio.
Released: 2026
Projects
Here you will find a selection of key projects, tools, and applications we have led or contributed to.
Corn Stack
Pure Signal, Zero Noise.
Corn Stack is a free, Bitcoin-only portfolio tracker built for absolute privacy with zero accounts and 100% local storage. It eliminates altcoins and ads, delivering only essential tools like live pricing and a calculator.
Permanent Traveler
Automated Days-in-Country Tracker
Permanent Traveler is an iOS application designed for digital nomads and global citizens that automatically tracks time spent in different countries to simplify the management of residency requirements.
AI Accounting
SaaS-Free, DIY AI Accounting System
Just upload your receipts and invoices to Google Drive! The AI automatically handles the bookkeeping and generates your financial statements. Best of all, it works entirely within Google Sheets.
Gold Finger 21
Gold Price & Portfolio Management App
Gold Finger 21 provides real-time gold price tracking with multi-currency support and secure asset management—all achieved exclusively through on-device storage. Compatible with both mobile and PC.
Voice to Text Tool
AI Transcription: Long-Form & Multilingual
High-precision transcription specialized for technical terminology. Drastically reducing minutes creation time to focus on essential discussions.
Auto IR Widget
Auto-Display Latest IR Updates
Automatically display the latest disclosures with a single line of code. An auto-update widget for a maintenance-free, dynamic website.
EDGAR Watcher
SEC Disclosure Monitoring System
Real-time analysis of SEC filings (EDGAR). An intelligence bot that eliminates noise and extracts only the insights directly linked to investor decision-making.
QUANTUM ACCOUNTING
Corporate Site Design & Development
Turning accounting into “Management Power.” A fully scratch-built corporate site expressing the reliability and innovation of a global firm (2025 Renewal).
CACAONESIA
Corporate Site Design & Development
I designed and developed the corporate website for Cacaonesia Inc., a company dedicated to expanding the possibilities of cacao.
& Incubation
Going beyond mere funding, we provide hands-on support—from formulating financial strategies and product development (MVP creation) to establishing administrative departments.
Freedom Technology / Real Food / Regional Revitalization
Post-Seed / Freedom Tech
Seed / Finance
Tokyo/Otemachi Crypto Roundtable
Learn about crypto after work at our office.
We’ll discuss crypto from a finance, accounting, tax and audit perspective.
Track portfolio
Analyze portfolio performance
Calculate trade gains
Free to use
(We haven’t been able take the time to update the software in a while! If you’re interesting in developing the software with us, reach out!)
Services
Bitcoin Accounting
Accounting Consideration
Tax Consideration
Development of Accounting Tools
Internal Controls
Financial Statement Audits
Valuation of Derivatives
Blockchain Analysis
We create tools that use block explorer data (and Zerion) to perform analysis and data preparation for accounting purposes.
Compatible with Excel and Google Sheets.
Automation Tools
We create automation tools for accounting and financial statement analysis and audits.
Automated Dashboards
Compatible with Excel and Google Sheets.
Audit
Financial Statement Audit
Internal Control Audit (SOX)
Blockchain Audit
Internal Audit
Review
Agree Upon Procedures
Consulting
Accounting Compliance
SOX Implementation
Audit Assistance
Subsidiary Management
Foreign Business Expansion
Valuation
Business Valuation
Goodwill Valuation
Asset Valuation
Purchase Price Allocation
Impairment Testing
Stock Option Pricing
Crypto / Blockchain
CryptoGain
License Registration Support
Accounting Advisory
Segregation of Funds Audit
Financial Statement Audit
Financial Advisory
Business Forecasting/Budgeting
Pitch-deck Design
Annual Report Design
Analyst Report Design
Accounting Services
Bilingual CPAs will support the company’s financial reporting during the unexpected absence of directors, officers and key employees
News
BlockChainJam Podcast
Listen to my podcast where I talk with guests on topics ranging from cryptos, blockchains, finance, accounting and so much more.
Podcast twitter recent tweets
Media
October 17, 2020, Newsweek Japan
October 24, 2019, Newsweek Japan
October 24, 2019, Newsweek Japan
October 17, 2019, Newsweek Japan
Team.
Now Hiring Part-Time Staff
- Accounting Assistant
- Administrative Assistant
We welcome those who are great with numbers, have studied accounting, excel at Google Sheets, and take a meticulous approach to their work.
Come join our team!
Please click the button below for more details.
Partners
We partner with leading experts across diverse fields.
We’d love to hear from you.
Feel free to reach out with any questions.
Our team will get back to you within 48 hours.