Sourav Karmakar (@thesplusk) header
Sourav Karmakar (@thesplusk) profile picture

Building OpenFX 🇮🇳 | Former AVP CoinDCX/Bitoasis | C'est la vie 🤷‍♂️

BLR ✈️ KOL
Joined January 2010
Photo by Sourav Karmakar (@thesplusk)Photo by Sourav Karmakar (@thesplusk)Photo by Sourav Karmakar (@thesplusk)Photo by Sourav Karmakar (@thesplusk)Photo by Sourav Karmakar (@thesplusk)Photo by Sourav Karmakar (@thesplusk)Photo by Sourav Karmakar (@thesplusk)Photo by Sourav Karmakar (@thesplusk)Photo by Sourav Karmakar (@thesplusk)Photo by Sourav Karmakar (@thesplusk)
Four months have passed, but there has been no verification or action. I have stopped sharing reports because these are just for show. Love this system and accountability @BlrCityPolice @blrcitytraffic @CPBlr @BangaloreMirror @Jointcptraffic @dcptrsouthbcp
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Love zero response. All incidents are across HSR , Agara, Indiranagar. @dcptrsouthbcp @BlrCityPolice @blrcitytraffic @CPBlr @blrtraffici
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Sourav Karmakar retweeted
“The blockchain solved cross-border payments, and anyone still struggling just hasn’t adopted them yet.” This is basically nonsense. A common sentiment, and not entirely unjustifiable, but basically nonsense. Sit in any payments company pitch in 2026 and you'll hear "instant blockchain settlement" within the first five minutes. People nod along because it’s partially true. We all pretend that moving stablecoins between wallets was the thing that needed solving. But we all know there is more to it than that. If you've ever actually tried to get $50 million through an exotic corridor on a Saturday night, you know the blockchain transfer is the least of your worries. Maybe 1% of the problem. Here's what everyone knows but rarely talks about in the marketing copy: Before that five-second transfer can happen, you need to clear that $50M through domestic banking rails. Run compliance screening. Handle the edge cases that trigger manual review. Get the money on-chain in the first place. After that five-second transfer, you need liquidity in the target currency. Not thin liquidity that slips when you execute at size, but actual depth. That makes banking partners willing to take your calls after getting home from their kid’s soccer game. Then you need to navigate local payment rails that work differently in every jurisdiction. Then you need to land the funds in a bank account that's willing to receive them. The blockchain transfer sits in the middle of all of this – fast, commoditized and largely irrelevant. Exotic corridors don't fail on-chain. They fail at the off-ramp. They fail because not many people  have those kinds of banking relationships. They fail because liquidity doesn't exist at the depth you need between BRL and AED. They fail because for a long time everyone was worried about moving G3 dollars a micro-second faster, and almost no one focused on building rails the rest of the world could use. Here at OpenFX we say that we want to "move money like data.” But what does that mean? That means caring about every part of the transaction – the iceberg, above and below the surface. It also means caring more about emerging markets and exotic corridors, where these problems are even more acutely felt. Blockchain as a selling proposition is over. Wallet-to-wallet transfers are fully commoditized.That part of the game has been won, what matters now is whether the money wallets move actually lands in the account your supplier can access, in the currency they need, on the timeline you promised. That's an operations problem. An infrastructure problem. A relationships problem. The kind of hard problem we were built to solve.
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Sourav Karmakar retweeted
Look guys, it's actually really straightforward, a bunch of people staked their ETH on the Ethereum blockchain to earn yield, except they didn't want their capital to be locked up, so they actually staked with a liquid staking protocol called Lido who provided them a liquid staking receipt token called stETH, except they decided to juice their yield further by depositing their stETH receipt tokens into a restaking protocol called Eigenlayer, except they didn't want to lock up their capital, so they actually restaked with a liquid restaking protocol called KelpDAO who provided them with a liquid restaking receipt token called rsETH, except they decided to juice their yield further by depositing their rsETH tokens into a lending protocol called Aave so that they could open a leveraged looping position that borrows ETH against the rsETH collateral and restakes the ETH into rsETH which is then deposited as collateral, except it turns out rsETH used a cross-chain bridge called LayerZero that was hacked by north koreans causing rsETH to become undercollateralized and now these looping positions are stuck and unprofitable, and everyone is pointing fingers at each other, and also DeFi is a very serious industry
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Loved how they respect traffic rules, basic safety, honouring traffic lights. Fyi for - @blrcitytraffic @BlrCityPolice @Jointcptraffic Compliant uploaded multiple times on ASTraM App but no action on any report.
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Sourav Karmakar retweeted
According to J.P Morgan, in 2024 there was over $200 trillion in annual cross-border payment volume. And it's expected to surpass $300 trillion within the next several years. @openfx_ is tackling one of the largest market opportunities that exits. Don't miss my interview with @prabhakar2reddy to learn more about OpenFX and how he see's OpenFX changing the way money moves around the world.
$4 trillion is stuck in legacy payment rails. Cross-border FX is still broken. OpenFX is fixing it. @prabhakar2reddy CEO of @openfx_ joins our Stateful podcast, hosted by @masonnystrom. In this episode, they discuss the future of money movement: - Zero to $40B+ annualized TPV in 18 months, 99.99% automated, 3 people on trade ops - Stablecoins replace SWIFT: cross-border settlement in under 60 minutes, 24/7 - FX spreads compressed by 90-95% in every market OpenFX enters - Agentic payments timeline just collapsed from 7-10 years to 24-36 months - Spot FX could grow from $2 trillion to $200 trillion a day as the pipes widen 00:59 Why Cross-Border FX Is Still Broken in 2025 03:35 GBP to MXN in Minutes: How Open FX Works 07:14 $4 Trillion Stuck in Transit Right Now 07:44 Zero to $40B TPV in 18 Months 09:07 The 3 Factors Behind Open FX's Explosion 12:08 Payments Is Going Through a Complete Upheaval 14:55 AI Agents Won't Wait 3 Days for Money to Move 16:42 Open FX Is Building the AWS of Money 17:10 Do Fintech Moats Still Exist? 18:40 Moving $100B in Crypto vs. 5 Days for Wires 19:40 Why Crypto Companies Die Without Compliance 20:14 Culture Is Just the Founder's Personality Scaled 22:08 The World Order Is Changing 23:22 Agent Payments: From 10 Years Away to 24 Months 24:35 Where a Payments Insider Would Bet Today 25:47 Why There's No Universal Founder Advice
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Sourav Karmakar retweeted
We came out of stealth nine months ago at $8B in volume. As of February we crossed $45B. Revenue is up 10x. This week we raised a $94M Series A. @Accel, @atomico, @FactionVC, @northzoneVC, @M13Company, @PanteraCapital, some of the biggest names on both sides of finance chose to back us. You might be wondering why.
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Sourav Karmakar retweeted
1/ yesterday, the largest position in hash3 announced $94m in funding openfx provides fx infra for real-time cross-border payments and has reached $50B of annualized tpv within 22 months of launch hash3 has quadrupled down since seed. some reasons why you should pay attention
1/ the largest position in hash3 fund i just came out of stealth openfx provides fx infrastructure for real-time cross-border payments and has reached $10B of annualized tpv within 12 months of launch hash3 tripled down since seed. some reasons why you should pay attention
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Sourav Karmakar retweeted
There are two ways to touch 8 billion lives: acquire 8 billion individual customers, or build the infrastructure for the institutions that already serve them. We chose the latter. Today we're announcing OpenFX’s $94M Series A from @Accel, @atomico, @FactionVC, @M13Company , @northzoneVC, @PanteraCapital, and with support from existing investors @flybridge and @hash3xyz.
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Interesting
🧠 GRPO vs PPO — what's actually different? 1️⃣ Dynamic KL Penalty (w₁ · D_KL): GRPO adapts how hard it punishes policy drift using a tunable weight w₁. PPO uses a fixed KL or ignores it entirely — GRPO makes regularization smarter. 2️⃣ Explicit KL Regularization: PPO indirectly controls change via the clipped loss. GRPO directly adds KL divergence as a penalty term, making updates more aware of past behavior. 3️⃣ Fine-Grained Control: GRPO separates exploration-exploitation tradeoff via w₁, letting you tune learning style. PPO’s clip ratio is coarse and static — GRPO gives you a finer steering wheel. 🎯 Bottom line: GRPO = PPO with knobs that let you feel the road.
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Sourav Karmakar retweeted
🧠 GRPO vs PPO — what's actually different? 1️⃣ Dynamic KL Penalty (w₁ · D_KL): GRPO adapts how hard it punishes policy drift using a tunable weight w₁. PPO uses a fixed KL or ignores it entirely — GRPO makes regularization smarter. 2️⃣ Explicit KL Regularization: PPO indirectly controls change via the clipped loss. GRPO directly adds KL divergence as a penalty term, making updates more aware of past behavior. 3️⃣ Fine-Grained Control: GRPO separates exploration-exploitation tradeoff via w₁, letting you tune learning style. PPO’s clip ratio is coarse and static — GRPO gives you a finer steering wheel. 🎯 Bottom line: GRPO = PPO with knobs that let you feel the road.
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Sourav Karmakar retweeted
Sentient’s mission is to ensure that Artificial General Intelligence is open-source and not controlled by any single entity. We’re launching the GRID: the world’s largest network of intelligence. The GRID makes open-source the default for AI development and ensures humanity wins the future of AI. Let’s dive in👇
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A magic show for tonight.
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Small Telegram experiment → Game-changing trading signals product 📈 Months of team dedication made institutional-grade signals accessible to everyone in the @CoinDCX ecosystem. Research + Development = Magic ✨​​​​​​​​​​​​​​​Kudos to my team for pulling this off so fast.
We recently launched Expert Picks on CoinDCX, and the feedback has been great. Expert Picks delivers institutional-grade crypto signals directly in the CoinDCX app, so you don't have to multitask. You can place an order in just two clicks. You only need to decide on the position size. Curated by expert traders with 4+ years of trading experience and ~70% success rate, these signals are designed to help you make informed trading decisions. During our internal testing and beta phase, we received very good feedback from both new and experienced traders: → Beginners used Expert Picks to understand market trends, get comfortable with futures trading, and are now able to recognize and validate trade ideas independently. → Pro traders found that Expert Picks helped them cut down on research time and improve their success rates. Do try it out and share your inputs and feedback with us!
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