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