@jadenvo259

Jaden Vo

@jadenvo259Joined October 2026

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Jaden Vo's blogs

Jaden Vo's Blogjadenvo259.hashnode.dev7 posts

How Authenticator-App 2FA Codes Actually Work: Build a TOTP Generator in ~30 Lines (and Why It Beats SMS)

TL;DR: An authenticator-app code is just HMAC-SHA1(secret, floor(unix_time / 30)), chopped down to 6 digits. The spec is RFC 4226 (HOTP) plus RFC 6238 (TOTP), and the whole algorithm fits in about 30

13h ago · 8 min readjadenvo259.hashnode.dev

Is the ElevenLabs Creator Plan Worth It? A Practical Look at Credits, Minutes and Voice Cloning

#ad #ElevenAgentsPartner — this post contains affiliate links; I may earn a commission at no cost to you. ElevenLabs' Creator plan is the one most people end up looking at once AI narration becomes a

2d ago · 5 min readjadenvo259.hashnode.dev

Shipping AI Voiceovers? What ElevenLabs' Terms Say About Commercial Use

#ad #ElevenAgentsPartner — this post contains affiliate links; I may earn a commission at no cost to you. When you wire a text-to-speech service into a product or a content pipeline, the licensing que

3d ago · 5 min readjadenvo259.hashnode.dev

How Passkeys Work for Web Developers: A Walkthrough of the WebAuthn Sign-in Flow

Google, Apple, Microsoft, Amazon, GitHub and plenty of banks now offer passkeys. If you build login flows, the security model underneath is very different from passwords, and it's worth understanding

Oct 24 · 4 min readjadenvo259.hashnode.dev

Systeme.io vs ClickFunnels for Dev-Creators: Webhooks, Limits and What You Actually Need

TL;DR: validate on Systeme.io (free or $17). ClickFunnels makes sense at $197+ only when you need its editor, team seats or API access. If you're a developer selling a course, templates or an ebook,

Oct 23 · 2 min readjadenvo259.hashnode.dev

Jaden Vo

About

Available for

Jaden Vo's blogs

How Authenticator-App 2FA Codes Actually Work: Build a TOTP Generator in ~30 Lines (and Why It Beats SMS)

Is the ElevenLabs Creator Plan Worth It? A Practical Look at Credits, Minutes and Voice Cloning

Shipping AI Voiceovers? What ElevenLabs' Terms Say About Commercial Use

How Passkeys Work for Web Developers: A Walkthrough of the WebAuthn Sign-in Flow

Systeme.io vs ClickFunnels for Dev-Creators: Webhooks, Limits and What You Actually Need

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Jaden Vo

About

Available for

Jaden Vo's blogs

How Authenticator-App 2FA Codes Actually Work: Build a TOTP Generator in ~30 Lines (and Why It Beats SMS)

Is the ElevenLabs Creator Plan Worth It? A Practical Look at Credits, Minutes and Voice Cloning

Shipping AI Voiceovers? What ElevenLabs' Terms Say About Commercial Use

How Passkeys Work for Web Developers: A Walkthrough of the WebAuthn Sign-in Flow

Systeme.io vs ClickFunnels for Dev-Creators: Webhooks, Limits and What You Actually Need