₿uilder 1

2025-06-26

Intro (10 min)

Chatham House Rules — No photos/videos
This is our first ₿uilder! We’re very open to feedback and ideas on how to make these events great. Feel free to suggest ideas during the meetup or afterwards
Define ₿uilder and purpose for starting this event series
Anyone can be a ₿uilder! Vibe coding makes building apps approachable and intuitive
Quick Show of Hands
- Who works for big tech? PM? Designer? Other?
- Who has vibe coded before? Integrated bitcoin?
10 Second Intros
- Name
- What you do
- What you want to get out of ₿uilder

Block rolls out Bitcoin payments on Square at the Bitcoin 2025 Conference in Las Vegas
- Steak N Shake reports 50% savings on processing fees when using BTC
Square is earning 9.7% returns on its C= Lighting Service Provider
- Bitrefill reports 3.5% returns
- Amboss launches Rails, a self-custody Bitcoin yield service
Coinbase Credit Card preannouncement. 2%–4% back in BTC depending on assets held
Start9 moves Knots to the Main Registry Previously in the Community Registry
- Knots at 13% market share
Home equity → bitcoin: Horizon and Sovana
Lightning Wallet Market in Japan 64%: Wallet of Satoshi
Foundation will release Passport Prime in Q3
COLDCARD Co-Sign (CCC)
Bitkey introduces Security Hub
Ledger sunsets Nano S
Xverse integrates Lightning via Sati
Wallet of Satoshi non-custodial wallet available again in the US
Blitz: first Spark mobile wallet
Magic Eden partners with Spark for faster and cheaper BTC settlements
Cake wallet adds Payjoin v2

Federal Housing Director orders Fannie Mae to consider Crypto as an asset for obtaining mortgages
Clarity Act heads to House floor for Vote
- BRCA included in market structure bill, the Clarity Act
- Save our Wallets

₿-only convention for displaying bitcoin quantities
- BIP-177 describes a new approach to bitcoin units that deprecates both the use of decimals and the usage of “sats/satoshis”
- New page added to Design guide with proposed best practices
- Boardwalk Cash is an example of a product leading and embracing the change
Seedless is safer debate

The emergence of vibecoding
TradFi payments vs. stablecoins vs. bitcoin: Where does bitcoin separate itself?
Mixing digital and physical: Integrating vibe-coded apps with billboards