
David Marcus
8.5K posts

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



I didn't fully understand why Bitcoin + AI was such a big deal until this episode. AI agents are hitting a wall — they can't remember anything between conversations. Graph databases fix the memory problem. Lightning Network gives them a wallet. Now they can think AND transact. TFTC #726 w/ @martybent, Brian Murray & Paul Itoi 🔥

Tether ❤️ Bitcoin Bitcoin via Spark support in WDK (Wallet Development Kit) works seamlessly. People, machines and AI agents can now transact in Satoshi micropayments. CC @lightspark @davidmarcus










self custody 🔐 on lightning ⚡️ at scale no trade-offs congrats on the amazing launch @cakewallet powered by @spark and @Breez_Tech

Anything beyond holding your own UTXO on Bitcoin L1 involves trust assumptions, including Lightning. Spark’s trust model is minimal and transient: 1-of-n operators must act honestly at the moment of transfer, and even if all fail, your pre-signed exit transaction lets you reclaim your Bitcoin on L1 unilaterally. No permission from Spark or anyone else. This is superior to any EVM L2 in practice, where your exit depends on bridge contracts controlled by upgradeable multisigs, sequencer liveness, and an L1 that isn’t Bitcoin. On Spark, your exit depends on Bitcoin and nothing else.





