According to @lightspark, Grid is a modular developer platform on open networks and Bitcoin infrastructure that provides one API to send, receive, and settle value globally across fiat, stablecoins, and BTC (source: @lightspark on X, Dec 18, 2025). Lightspark states Grid exposes five core primitives—Payouts, Ramps, Rewards, Global P2P, and treasury/liquidity capabilities—for programmable money flows (source: @lightspark on X, Dec 18, 2025). The company says it uses Bitcoin as the routing layer, targets near-zero fees, and abstracts complexity to enable instant transfers and global liquidity (source: @lightspark on X, Dec 18, 2025). Lightspark cites work with SoFi and Nubank as examples of large institutions exploring this approach (source: @lightspark on X, Dec 18, 2025). The post positions Grid as a connectivity layer between products and the internet of value, aiming to replace traditional, patchwork payment rails with internet-native settlement (source: @lightspark on X, Dec 18, 2025). The thread argues founders want global reach, low fees without hidden spreads, instant settlement without many local processors, and an open, neutral network rather than closed ecosystems (source: @lightspark on X, Dec 18, 2025).