While attending the MIT Bitcoin Expo earlier this month I was able to sit down with Bitcoin Core developer Antoine Poinsot.

Currently at Chaincode Labs, Antoine was previously at Wizardsardine, a bitcoin security company behind Revault, a pre-signed transaction based vault, and Liana, a miniscript based Bitcoin wallet. Antoine’s first commit was merged to Bitcoin Core on May 16th, 2019.

We discussed the Great Consensus Cleanup proposal Antoine is putting forward as a prospective soft fork of the Bitcoin protocol modeled on Matt Corallo’s original verson of the proposal from 2019.

Bitcoin has suffered from numerous bugs over the years, with some notably severe events like the…

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SPAR has begun accepting Bitcoin payments at its Zug, Switzerland location, marking another milestone in Switzerland’s progressive approach to bitcoin adoption. The implementation uses the Lightning Network through DFX Swiss’s OpenCryptoPay solution, enabling instant transactions at the point of sale.

The store’s location in Zug, often called “Crypto Valley,” reflects Switzerland’s embrace of technology. The country has emerged as a global leader in bitcoin adoption, with cities like Zug and Lugano spearheading initiatives to integrate bitcoin into everyday transactions.

Lugano, in particular, has made headlines with its “Plan ₿” initiative, which aims to make bitcoin…

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This is the third article in a series deep diving into individual covenant proposals that have reached a point of maturity meriting an in-depth breakdown.

TXHASH and CHECKTXHASHVERIFY (TXHASH), put forward by Steven Roose and Brandon Black with a BIP number currently unassigned, is a “template based” covenant that can conceptually seen as an extension or more advanced version of CHECKTEMPLATEVERIFY (CTV). 

Before getting into the nitty gritty of how TXHASH works, let’s refresh on the pieces of data in a Bitcoin transaction. 

At a high level you have the outputs, the inputs, and the witness (or script sig for non-Segwit transactions in the input). 

Global transaction fields:

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Bitcoin’s 2025 journey hasn’t delivered the explosive bull market surge many expected. After peaking above $100,000, the 2025 Bitcoin price retraced sharply to as low as $75,000, sparking debate among investors and analysts about where we stand in the Bitcoin cycle. In this analysis, we cut through the noise, leveraging on-chain indicators and macro data to determine if the Bitcoin bull market remains intact or if a deeper Bitcoin correction looms in Q3 2025. Key metrics like MVRV Z-Score, Value Days Destroyed (VDD), and Bitcoin capital flows provide critical insights into the market’s next move.

Is Bitcoin’s 2025 Pullback Healthy or Bull Cycle End?

A strong starting…

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Spar an international grocery behemoth has begun accepting Bitcoin at a store in Zug Switzerland signaling a potential revolution in retail crypto payments globally. The initiative powered by DFX Swiss utilizes their new OpenCryptoPay tool making Spar one of the first supermarkets in Switzerland to accept Bitcoin directly at checkout through the Lightning Network. This system allows customers to swiftly pay by scanning a QR code further simplifying the transaction process.

Showcasing the ease of crypto transactions Rahim Taghizadegan director of the Bitcoin Association Switzerland shared a video on LinkedIn demonstrating a seamless Bitcoin payment at Spar. This move not only enhances customer convenience but also positions Spar at the forefront of digital payment innovation. The Zug store’s successful pilot could lead to a broader rollout across Spar’s extensive network which spans over 13,900 stores in 48 countries.

Should this pilot prove successful Spar plans to expand Bitcoin payments throughout Switzerland and potentially on a global scale. This marks a significant milestone in cryptocurrency adoption enhancing Spar’s reputation as a leader in innovative retail solutions and offering millions of daily shoppers a new convenient payment option.

Source

Bitcoin is the first instantiation of digitally scarce capital—allowing companies to raise, deploy, and prove value faster than ever before.

In legacy finance, capital formation is a slow, friction-filled process. A company raises funds, deploys them over months or years into infrastructure, products, or real estate—and only then begins the long wait to see whether the capital generated a return.

This lag isn’t a bug. It’s a defining feature of the traditional system, built on physical constraints, regulatory overhead, intermediated trust, and long feedback loops. That system has not changed—until now.

Bitcoin is fundamentally different. For the first time,…

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