~/talk

Building Stablecoin Payments at Scale

Talkat ETHConf 2026 · 2026-06-08..06-10· [microservices]
slides:none on file

Four years of work leads to a concrete claim: stripping volatile tokens and going all‑in on stablecoins raises conversion, volume, and merchant satisfaction, with 64% of wallets holding no other assets. The team builds an open source escrow smart contract on Base that powers Shopify USDC checkout on hundreds of thousands of sites, implements a permissionless operator role and six operations including authorize and capture plus blockchain-native reclaim, and achieves sub‑cent, 200 ms finality in practice.

AI-written summary · about

  1. 0:00Introduction
  2. 0:41Brian Armstrong's 2012 Post on Removing Interchange
  3. 1:09Why Crypto Payments Are in Coinbase's DNA
  4. 1:35Trying Everything to Make Crypto Payments Work
  5. 2:00Worrying Crypto Might Not Fit Payments
  6. 2:23Listening Closely to Buyers and Merchants
  7. 2:41The Camp That Wanted Crypto as Cash
  8. 3:06The Non-Consensus Bet on Stablecoins
  9. 3:35The Internal Backlash
  10. 3:58Why All the Metrics Went Up
  11. 4:2864% of Wallets Held No Other Assets
  12. 4:54The New Cohort of Savers
  13. 5:14Bringing the Best Checkout to Shopify
  14. 5:32The Auth and Capture Question
  15. 6:08A Year Learning What Payments Require
  16. 6:32Why Not to Underestimate Traditional Payments
  17. 7:15Plugging Into Where Enterprises Already Are
  18. 7:37The Commerce Payments Protocol on Base
  19. 8:01How the Escrow Smart Contract Works
  20. 8:28The Operator Role Explained
  21. 8:46Why Operators Cannot Modify or Lock Funds
  22. 9:28The Six Core Operations
  23. 9:48Reclaim as a Blockchain Native Feature
  24. 10:12The Boring but Required Enterprise Needs
  25. 10:33Predictable Flat Gas Fees
  26. 10:44Custom Settlement Files per PSP
  27. 11:01Daily Fiat Delivery and Compliance
  28. 11:26Just Another Alternative Payment Method
  29. 11:54What the Industry Still Needs
  30. 12:19Why the Blockchain Is Fine for Payments
  31. 12:42Where Wallet UX Kills Conversion
  32. 13:03Why On-Ramps Still Need to Be Better
  33. 13:27Signing UX and Smart Wallet Adoption
  34. 13:59From Curiosity to Production in Two Years
  35. 14:41Closing
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