David Marcus

David Marcus

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CEO & co-founder @Lightspark ➡️ building the open Money Grid on Bitcoin + @spark. Ran Payments/Crypto & @Messenger at @Meta, led @PayPal + 3 startups.

Lightspark Stands Alone as Independent Global Money Platform
SocialMar 17, 2026

Lightspark Stands Alone as Independent Global Money Platform

Congratulations to our colleagues at @BVNKFinance for their acquisition by @Mastercard. After @Stablecoin got acquired by @stripe last year, @lightspark is now officially the only independent global stablecoin + Bitcoin +fiat global money movement platform on a neutral network.

By David Marcus
Hiring LA Narrative Lead to Shape Global Money Story
SocialMar 17, 2026

Hiring LA Narrative Lead to Shape Global Money Story

Later today we will be posting a new LA-based role to lead @Lightspark narrative distribution on socials. I’ll be working closely with that leader to tell our story about changing the way money moves globally. If you think you’re the...

By David Marcus
Seeking Custom LLM‑Powered Voice Assistant with App Integration
SocialMar 15, 2026

Seeking Custom LLM‑Powered Voice Assistant with App Integration

Is anyone making an Alexa-like speaker/mic product that connects to your LLM of choice + relevant critical apps?

By David Marcus
Instant Bitcoin Cross‑chain Swaps Powered by GardenFi
SocialMar 4, 2026

Instant Bitcoin Cross‑chain Swaps Powered by GardenFi

Brick by brick 🧱. Welcome instant any chain/asset ↔ Bitcoin, powered by @gardenfi on @spark.

By David Marcus
Cake Wallet Joins Spark, Boosting Bitcoin Lightning Adoption
SocialMar 2, 2026

Cake Wallet Joins Spark, Boosting Bitcoin Lightning Adoption

Thrilled to welcome @cakewallet to Spark. All the leading Bitcoin wallets are on @spark or in the process of implementing it. So great to get to this level of product market fit with awesome partners like @Breez_Tech accelerating adoption.

By David Marcus
Hackathon PWA Game Integrates Crypto Wallet and Bitcoin Prizes
SocialMar 2, 2026

Hackathon PWA Game Integrates Crypto Wallet and Bitcoin Prizes

Last week we had an agent-coding hackathon at @lightspark. I built a PWA game featuring a @spark wallet with @X and email login (@privy), ability to win Bitcoin prizes (skills), fund your BTC wallet with @USDC via @flashnet or...

By David Marcus
Lightspark Aims to Lead Stablecoin Payments Within Two Years
SocialFeb 26, 2026

Lightspark Aims to Lead Stablecoin Payments Within Two Years

People don’t think about @Lightspark as a stablecoin company. I’m now confident we will be the largest stablecoin payments company in the next 24 months. All on a neutral, open network that belongs to our clients as much as it...

By David Marcus
Instant USD‑to‑BRL Transfers Powered by Claude AI
SocialFeb 20, 2026

Instant USD‑to‑BRL Transfers Powered by Claude AI

Demo Friday: realtime @claudeai assisted 🇺🇸 USD → 🇧🇷 BRL in seconds using @Lightspark Grid. Magic money movement available to everyone and in 60+ countries. We recorded this in one shot. So easy. https://t.co/6tOqsVxo9R

By David Marcus
Spark: Easiest, Fastest, Cheapest Lightning Integration
SocialFeb 19, 2026

Spark: Easiest, Fastest, Cheapest Lightning Integration

🚀! A reminder that the easiest, fastest, cheapest way to add Lightning to your product and wallet is @spark https://t.co/cVqtdpsgxP

By David Marcus
Real‑time 24/7 Global Payments Now Available Instantly
SocialFeb 19, 2026

Real‑time 24/7 Global Payments Now Available Instantly

At @Lightspark we first focused on the most difficult global money movement problem: realtime, 24/7 P2P for banks. It gave us superpowers now available for B2B, B2C payouts, global pay-ins/virtual accounts, and treasury management. Same day setup: https://t.co/1cRJucmFKd

By David Marcus
Lightspark Grid Powers AI-Driven Real-Time Global Payments
SocialFeb 17, 2026

Lightspark Grid Powers AI-Driven Real-Time Global Payments

.@Lightspark Grid is the best platform to build realtime, global, 24/7 money movement solutions with AI for B2B payments, B2C payouts, P2P apps, stablecoin, and Bitcoin-enabled apps. Demo with Claude-skill coming this week. More here: https://t.co/0M2DOG8KdQ

By David Marcus
Ex-PayPal Exec Breaks Silence, Warns of Ongoing Decline
SocialFeb 3, 2026

Ex-PayPal Exec Breaks Silence, Warns of Ongoing Decline

I woke up this morning to dozens of messages from former PayPal colleagues. It pushed me to finally speak up. I never spoke publicly about the company after I left. Part of that was loyalty to John Donahoe, who gave...

By David Marcus
Why Bitcoin Beats Gold as an Investment Choice
SocialJan 26, 2026

Why Bitcoin Beats Gold as an Investment Choice

I genuinely don't understand why anyone would want to buy gold rather than Bitcoin.

By David Marcus
Spark Leverages Bitcoin’s Massive Liquidity to Power Ecosystem
SocialDec 13, 2025

Spark Leverages Bitcoin’s Massive Liquidity to Power Ecosystem

.@spark’s ecosystem is starting to stack all the ingredients and 3rd party capabilities of the most successful digital asset networks. But… it’s built on Bitcoin that dwarfs the liquidity of all other networks combined. So bullish.

By David Marcus
Bitcoin, Lightning, and Spark Discussed Amid Stunning Podcast Views
SocialDec 7, 2025

Bitcoin, Lightning, and Spark Discussed Amid Stunning Podcast Views

Had so much fun chatting with @BITVOLT for the @SimplyBitcoin pod in Lugano. We covered @spark, Lightning, making Bitcoin part of daily payments and so much more. Special award for the most picturesque backdrop for a podcast ever. No contest.

By David Marcus
Spark's BTKN Standard Ignites Rapid Bitcoin DeFi Explosion
SocialDec 3, 2025

Spark's BTKN Standard Ignites Rapid Bitcoin DeFi Explosion

Bitcoin DeFi and @spark — quick story time: At @Lightspark we built Spark to fill the gaps that we determined couldn’t be filled by Lightning well. Ultra-cheap, easy, fast non-custodial Bitcoin and stablecoins support. In developing support for stables, the BTKN standard...

By David Marcus
Bitcoin DeFi Launches on Spark via Flashnet
SocialDec 3, 2025

Bitcoin DeFi Launches on Spark via Flashnet

Say hello to Bitcoin DeFi on @spark via @flashnet. And that’s a badass video too…

By David Marcus
Davi Trazza Joins Lightspark as First CBO
SocialDec 2, 2025

Davi Trazza Joins Lightspark as First CBO

I couldn't be more excited about @davistrazza joining @lightspark as our first Chief Business Officer. Davi is in an incredible leader who was responsible for a big part of the growth at Adyen — a company I've long admired. Can't...

By David Marcus
CEO Bans Bitcoin ETFs, yet They Launch Next Year
SocialDec 1, 2025

CEO Bans Bitcoin ETFs, yet They Launch Next Year

Vanguard CEO on Bitcoin ETFs in 2024: "We'll never offer Bitcoin ETFs, we're not going to change our mind around this". 2025: that person isn't CEO anymore. Bitcoin ETF trading starts tomorrow.

By David Marcus
In‑person Wallet of Satoshi Payments Deliver Satisfying UX
SocialNov 18, 2025

In‑person Wallet of Satoshi Payments Deliver Satisfying UX

I love that in-person @walletofsatoshi payment experience so much. It's such a satisfying UX.

By David Marcus
Instant Bitcoin Rewards Without Custody for Any App
SocialNov 18, 2025

Instant Bitcoin Rewards Without Custody for Any App

Incentivizing users with realtime Bitcoin rewards has never been possible like this until now without custody. Great for card issuers (earn BTC at every tap), game developers, and so much more. Here's a little fun demo the team built using...

By David Marcus
Open Networks Enable Cross‑Border CashApp Transfers to 65+ Countries
SocialNov 15, 2025

Open Networks Enable Cross‑Border CashApp Transfers to 65+ Countries

Weekend quest… Experimenting sending $ from a US bank to @CashApp using UMA + @lightspark Grid. Very little work left to make this fully native within Cash App to enable sending and receiving to/from 65+ countries. Open networks FTW! Hat...

By David Marcus
Bitcoin: The Only Neutral Network for Internet Money
SocialNov 8, 2025

Bitcoin: The Only Neutral Network for Internet Money

I thoroughly enjoyed this conversation with @BitcoinArchive while in Lugano. We talked about why Bitcoin is the only neutral network fit to become the Internet of Money, stablecoins, @spark, Grid, global money movement and so much more.

By David Marcus
Bitcoin: The Neutral Network for the Internet of Money
SocialNov 8, 2025

Bitcoin: The Neutral Network for the Internet of Money

I thoroughly enjoyed this conversation with Bitcoin Archive while in Lugano. We talked about why Bitcoin is the only neutral network fit to become the Internet of Money, Spark, global money movement and so much more https://lnkd.in/g_DSu5Kk

By David Marcus
Respecting River's Relentless Bitcoin-Focused Product Ethic
SocialNov 6, 2025

Respecting River's Relentless Bitcoin-Focused Product Ethic

I truly respect @river’s work ethic, product sense and focus on Bitcoin. That team has been chipping away for a while.

By David Marcus
Limited New Seats Available on Lightspark Platform
SocialNov 3, 2025

Limited New Seats Available on Lightspark Platform

Few new seats just opened on the @lightspark 🚀...

By David Marcus
SoFi Delivers Instant, Ultra‑cheap US‑to‑Mexico Payments via Bitcoin
SocialNov 2, 2025

SoFi Delivers Instant, Ultra‑cheap US‑to‑Mexico Payments via Bitcoin

My new favorite “impress your friend” thing to do on weekends is showing off @SoFi’s new, realtime, ultra-cheap international payment experience. I show 🇺🇸 to 🇲🇽, on a weekend (other banks can’t do it), and the $ magically gets to...

By David Marcus
Bitcoin Rewards Outperform Expectations—Create Yours Today
SocialOct 31, 2025

Bitcoin Rewards Outperform Expectations—Create Yours Today

Bitcoin rewards sells better than anyone truly understands yet. Build your own here today: https://t.co/1cRJucmFKd

By David Marcus
Bitcoin White Paper Turns 17: Money’s Most Impactful Blueprint
SocialOct 31, 2025

Bitcoin White Paper Turns 17: Money’s Most Impactful Blueprint

Happy 17th Bitcoin white paper anniversary! Undeniably the most consequential money paper ever written in history. https://t.co/r1oAgGl40G

By David Marcus
Spark Docs Now Exceptional for Building on Bitcoin
SocialOct 30, 2025

Spark Docs Now Exceptional for Building on Bitcoin

I personally thought @spark original developer docs were decent, but now, they're GREAT! We humbly believe this is the best way to build on Bitcoin, but find out for yourselves: https://t.co/gW65CPL8ZB

By David Marcus
DeFi Primitives Enable Real‑time Bitcoin Payment Networks
SocialOct 29, 2025

DeFi Primitives Enable Real‑time Bitcoin Payment Networks

It took me a while to appreciate that many DeFi primitives were essential to building a successful open payment network. Ultra-efficient, realtime swaps between stablecoins, Bitcoin and tokenized assets, and liquidity bridging are a must, and these are finally coming...

By David Marcus
Bitcoin Endures Unprecedented Throughput Stress Test
SocialOct 29, 2025

Bitcoin Endures Unprecedented Throughput Stress Test

The amount of throughput stress test @spark is being subjected to probably hasn’t happened on Bitcoin until now. Proud of the team for working around the clock to rise to the opportunity.

By David Marcus
Profiting Now by Issuing Useless Stablecoins
SocialOct 29, 2025

Profiting Now by Issuing Useless Stablecoins

It’s a great time to get paid to issue stablecoins that won’t do anything for anyone.

By David Marcus
Bitcoin's Value: Energy‑Backed Digital Scarcity, Halved Over Time
SocialOct 26, 2025

Bitcoin's Value: Energy‑Backed Digital Scarcity, Halved Over Time

To people saying Bitcoin has no intrinsic value, a reminder that each Bitcoin represents ~1 GWh of energy transformed into digital scarcity, secured by code, halving every four years until 21M max supply. Good luck finding a better asset. cc:...

By David Marcus
Reviving Fun and Humor in Bitcoin Development
SocialOct 26, 2025

Reviving Fun and Humor in Bitcoin Development

Bring (back?) fun and humor to building on Bitcoin.

By David Marcus
Unite to Make Bitcoin Everyday Payments, Avoid Centralization
SocialOct 25, 2025

Unite to Make Bitcoin Everyday Payments, Avoid Centralization

Bitcoiners, unite. I know this is a tall order. I know many will laugh. But it’s time. We must work *together* to ensure Bitcoin becomes part of every day payments. Hoping for the most perfect and pure network and losing...

By David Marcus
Open vs Closed Stablecoins: Choose the Right Architecture
SocialOct 24, 2025

Open vs Closed Stablecoins: Choose the Right Architecture

If you’re building anything stablecoin-related, and are considering your choices, this is the one video you want to watch over the weekend. Open vs. closed: choose wisely.

By David Marcus
Native Bitcoin on Spark Beats Wrapped Bitcoin
SocialOct 23, 2025

Native Bitcoin on Spark Beats Wrapped Bitcoin

Real Bitcoin on @spark > wrapped Bitcoin.

By David Marcus
Spark's Rapid Bitcoin Ecosystem Growth Unites Global Builders
SocialOct 22, 2025

Spark's Rapid Bitcoin Ecosystem Growth Unites Global Builders

.@Spark went live less than 6 months ago. It’s crazy and so amazing to build an ecosystem on Bitcoin with so many great builders from all over the world. Check it out! (play with sound). We’re only getting warmed up…...

By David Marcus
Spark Makes Stablecoin Transfers Private, Gasless, Bitcoin‑backed
SocialOct 22, 2025

Spark Makes Stablecoin Transfers Private, Gasless, Bitcoin‑backed

Stablecoin transactions on @spark will soon be private, gasless (pay tiny fees in the stable you’re moving), and benefit from Bitcoin’s neutrality, true decentralization and trustlessness (unilateral exit to L1).

By David Marcus
Bitcoin: The Ideal Neutral Settlement Asset with Unmatched Liquidity
SocialOct 21, 2025

Bitcoin: The Ideal Neutral Settlement Asset with Unmatched Liquidity

People don’t understand — yet — that Bitcoin is the most ideal neutral settlement asset between two fiat currencies. Its liquidity depth is unmatched in digital assets land.

By David Marcus
Bitcoin Silently Powers Real‑time Cross‑border Money Flow
SocialOct 21, 2025

Bitcoin Silently Powers Real‑time Cross‑border Money Flow

Invisible Bitcoin moving money in realtime across borders, payment systems, currencies, and banks. Slowly, and then all at once. Giddy up indeed!

By David Marcus
Corporate FUD Fails; Decentralized Blockchains Outpace Regulation
SocialOct 21, 2025

Corporate FUD Fails; Decentralized Blockchains Outpace Regulation

Hearing CorpChains are trying to create FUD with regulators and financial institutions about open, truly decentralized blockchains on compliance and more. Hate to break it to you guys, but it won’t work. The time of reg-capture by closed, corp-controlled money...

By David Marcus
Privy Simplifies Embedding Spark Wallets Effortlessly
SocialOct 21, 2025

Privy Simplifies Embedding Spark Wallets Effortlessly

At @lightspark we ❤️ @privy_io. Thanks @henri_stern for demo’ing how easy it is to spin up a @spark embedded wallet with Privy last week at our partner event!

By David Marcus
Bitcoin Is a Money Network, Not Just Currency
SocialOct 20, 2025

Bitcoin Is a Money Network, Not Just Currency

I’m a big @aantonop fan and had never seen this video, but he nailed it. The world will soon understand Bitcoin, the money network, not the currency / store of value…

By David Marcus
Support FOSS Bitcoin Ecosystem: Back @Lclhostresearch
SocialOct 20, 2025

Support FOSS Bitcoin Ecosystem: Back @Lclhostresearch

We are thrilled to be in a position to support the FOSS Bitcoin ecosystem. It's vital for the Bitcoin ecosystem. If you're so inclined, support @lclhostresearch, they're doing amazing work.

By David Marcus
Bitcoin-Powered Global Money Movement Gains Builder Momentum
SocialOct 20, 2025

Bitcoin-Powered Global Money Movement Gains Builder Momentum

Putting work out there and seeing this many builders so pumped is the best feeling. Getting lots of love for @spark and @lightspark Grid rn. Global money movement built on Bitcoin is so going to win.

By David Marcus
New Grid Enables Bitcoin Rewards for Builders
SocialOct 19, 2025

New Grid Enables Bitcoin Rewards for Builders

I’m calling on builders! With the new capabilities we @lightspark announced this week with Grid, one I’m hyper bullish on is Bitcoin rewards. Before @spark + grid this wasn’t ever possible (L1 slow+expensive, LN inbound channel issue), here are ideas...

By David Marcus
Bitcoin as Global, Real‑Time, Low‑Cost Money Protocol
SocialOct 18, 2025

Bitcoin as Global, Real‑Time, Low‑Cost Money Protocol

My keynote at @Lightspark Sync earlier this week. Learn how we built products and technologies to make Bitcoin the standard open protocol to move money (fiat, stablecoins, and ofc BTC) 24/7, in realtime globally, at the lowest cost. https://t.co/tt3glMrkhC

By David Marcus