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Overview
Karthikeyan NG — Engineer, author, speaker. CTO & CISO building stablecoin settlement infrastructure. Quant trading in public at feaws.xyz. Crypto + AI infrastructure since 2008.
News
8 out of 8: the blind test that closed my voice cloning feature
I spent two weeks on runtime engineering for on-device voice cloning, then ran a one-hour forced-choice blind test against real recordings and scored 8/8 identifying the fake. p = 0.0039. Every ear test before it had compared two synthetic clips to each o
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my voice journal will not speak tamil
Apple's Speech framework handles 34 languages. DailyVox ships its interface in five. The binding constraint on an on-device multilingual app is sentence embeddings, not speech recognition, and Apple ships those for five languages and no more. Tamil is unr
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a limit order book and matching engine in go
Three weeks, 21 releases, 20,299 lines of Go and 19,906 lines of tests. An embeddable central limit order book with integer-exact pricing, a lock-free single-writer core and machine-checked crash recovery. What it does, what it deliberately refuses to do,
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building topical authority from zero traffic
Three months. Five posts in a single narrow niche. The trajectory you can actually hit, and the mistakes that compound badly if you skip them.
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a twin that refuses to predict your future - where DailyVox is, and where it's going
DailyVox builds a model of one person from their own journal, on their phone. It measurably fails at forecasting their mood - and that failure is the product boundary, not a bug. Where the build is, and where it's headed.
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RSS in 2026 - the best distribution channel nobody uses
RSS subscribers read 10x more posts per delivery than email, churn at 1/8th the rate, and require zero infrastructure to support. Almost no creator uses it. Here is why that is a mistake.
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llms.txt in practice - what it is, what to put in it
A plaintext file at the website root that tells LLM crawlers what they should index. The new robots.txt, except this one matters.
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Spec-driven development is the verification bottleneck with a name
Spec-driven development is being sold as a new methodology for the agent era: write a precise spec, let the agent build to it. It is a good idea. It is also not new. It is the thing I have been arguing for years, that generation got cheap and verification
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Machine learning projects for final year: how to pick one that actually helps you
Your final-year machine learning project is the first real portfolio piece most Indian students will have, and almost everyone treats it as a checkbox to clear instead. I have judged these at hackathons and screened them on resumes. Here is how to choose
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The machine learning career path in India nobody draws honestly
Every machine learning career path guide for India draws the same neat ladder of certifications and job titles. The real ladder is about what you own and what you can be trusted to decide, not what you have completed. Here is the honest version of the run
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