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Bitcoin Kevin

@bitcoinkevin

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May 26, 2026

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How to Prove a File Existed Before a Certain Date Using Bitcoin (Without Running a Node)

Zeke5d ago • 4 min read

How to Prove a File Existed Before a Certain Date Using Bitcoin (Without Running a Node)

PFWIT anchors SHA-256 hashes into Bitcoin via OpenTimestamps. Submit a hash, get a Merkle inclusion ...

#bitcoin#blockchain#security#opensource

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Trustless Bug Bounty Releases with a PoW-Gated DLC Oracle

Zeke6d ago • 5 min read

Trustless Bug Bounty Releases with a PoW-Gated DLC Oracle

Auto-release bounty funds the moment a PR merges — no multisig committees, no escrow arguments, just...

#bitcoin#dlc#javascript#opensource

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Fourteen Shell Companies, One Spy Agency, and Why Bot Traffic Is Cheap Until It Is Not

Zeke6d ago • 5 min read

Fourteen Shell Companies, One Spy Agency, and Why Bot Traffic Is Cheap Until It Is Not

How a US Army intel report on China's MSS hub-and-spoke cyber network maps onto the Softwar thesis, ...

#bitcoin#security#infosec#bitcoindev

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Stop Writing Security Logic From Scratch: A Multi-Sig Template for Clarity Developers

Timothy Chimbiv1d ago • 1 min read

Stop Writing Security Logic From Scratch: A Multi-Sig Template for Clarity Developers

Every Clarity developer writes the same security patterns over and over. Access control. Multi-sig.....

#blockchain#bitcoin#clarity#stacks

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How Real 5-Minute BTC Scalpers Work on Polymarket: Stale Order Book Sniping

NevoSayNevo2d ago • 2 min read

How Real 5-Minute BTC Scalpers Work on Polymarket: Stale Order Book Sniping

Most Polymarket 5-minute BTC Up/Down bots don’t predict price — they exploit latency. The core...

#architecture#automation#bitcoin#blockchain

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Japan Bond Yields and Time Preference: a couples therapist on what fiat does to long-term love

Fiachra Figs O'Sullivan3d ago • 8 min read

Japan Bond Yields and Time Preference: a couples therapist on what fiat does to long-term love

A couples therapist on time preference and scarcity, applied to today's news.

#bitcoin#psychology#relationships#timepreferencescarcity

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