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Wash sales and tax lots: what a trading agent gets wrong when it sells

Wash sales and tax lots: what a trading agent gets wrong when it sells

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5 min read
11.11 in Vietnam: 3 QR payment scams, and what they changed in our QR-reading app

11.11 in Vietnam: 3 QR payment scams, and what they changed in our QR-reading app

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8 min read
Testing Failure Paths in Fintech Onboarding: A Practical Engineering Checklist

Testing Failure Paths in Fintech Onboarding: A Practical Engineering Checklist

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5 min read
Windows has a free OCR engine. I pointed it at my broker's position grid.

Windows has a free OCR engine. I pointed it at my broker's position grid.

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5 min read
From raw bank descriptors to spending charts: merchant names, categories and a review queue in JavaScript

From raw bank descriptors to spending charts: merchant names, categories and a review queue in JavaScript

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5 min read
How to Build an MT5 Trading Bot Without Writing MQL Code

How to Build an MT5 Trading Bot Without Writing MQL Code

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2 min read
How to Build an MT5 Trading Bot Without Writing MQL Code

How to Build an MT5 Trading Bot Without Writing MQL Code

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2 min read
Duplicate Withdrawals in Crypto Exchanges: How Idempotency Prevents Double Payouts on Retry

Duplicate Withdrawals in Crypto Exchanges: How Idempotency Prevents Double Payouts on Retry

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8 min read
Lost money online? RBI's five-day rule from 2027

Lost money online? RBI's five-day rule from 2027

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5 min read
We rebuilt our Kalshi API starter from its own prompt. Live data found five bugs.

We rebuilt our Kalshi API starter from its own prompt. Live data found five bugs.

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12 min read
Validate a ratio before formatting it as a percentage

Validate a ratio before formatting it as a percentage

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2 min read
Web Bot Auth vs Visa TAP: How to Verify AI Agents

Web Bot Auth vs Visa TAP: How to Verify AI Agents

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3 min read
ACH Return Codes Explained: R01 to R85 and How to Handle Them

ACH Return Codes Explained: R01 to R85 and How to Handle Them

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3 min read
Choosing Image Generation Models — DALL-E 3, SDXL, and Flux for Web App Speed

Choosing Image Generation Models — DALL-E 3, SDXL, and Flux for Web App Speed

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5 min read
The Biggest Crypto Hack Ever Reportedly Started on a Laptop: 7 Lessons for Anyone Building Payment or Trading Systems

The Biggest Crypto Hack Ever Reportedly Started on a Laptop: 7 Lessons for Anyone Building Payment or Trading Systems

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9 min read
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