{"artifact":{"apiPath":"/api/reports/stablecoin-subscription-rails-for-agents-2026/evidence","byteLength":5693,"description":"Structured evidence ledger tying claims and chart provenance back to cited sources.","format":"evidence","label":"Evidence artifact","mimeType":"application/json; charset=utf-8","priceUsdc":0,"sha256":"f39696a40ddabd1955cd21efe2beeea58d87ec93680c4430bf18a3817b362b84","status":"live"},"document":{"chartProvenance":[{"chartTitle":"B2B stablecoin payment volume already dominates measured flows","sourceLabels":["FinTech Futures stablecoin volumes"],"sourceUrls":["https://www.fintechfutures.com/blockchain-crypto-digital-assets/is-2026-a-make-or-break-year-for-stablecoins"],"whyUseful":"Anchors the recurring-subscription problem in a market where business payment operations already matter more than consumer checkout ergonomics."},{"chartTitle":"Which rail should dominate each subscription pattern","sourceLabels":["Welcome to x402","Tempo Mainnet launch","Stripe machine payments","Stablecoins in Stripe financial accounts"],"sourceUrls":["https://docs.cdp.coinbase.com/x402/welcome","https://tempo.xyz/blog/mainnet","https://docs.stripe.com/payments/machine","https://docs.stripe.com/financial-accounts/stablecoins"],"whyUseful":"Shows buyers when stateless request rails, session rails, or merchant-treasury layers should dominate the architecture choice for a recurring payment pattern."}],"claims":[{"chartTitles":["Which rail should dominate each subscription pattern"],"confidence":"high","id":"subscription-three-shapes","kind":"comparison","section":"Three stack shapes","sourceLabels":["Welcome to x402","Tempo Mainnet launch","Stripe machine payments","Stablecoins in Stripe financial accounts"],"sourceUrls":["https://docs.cdp.coinbase.com/x402/welcome","https://tempo.xyz/blog/mainnet","https://docs.stripe.com/payments/machine","https://docs.stripe.com/financial-accounts/stablecoins"],"statement":"The recurring stablecoin subscription market has split into stateless request rails, session rails, and merchant-plus-treasury layers rather than one universal payment surface."},{"chartTitles":["Which rail should dominate each subscription pattern"],"confidence":"high","id":"x402-best-for-discrete-metering","kind":"finding","section":"Stateless request rails","sourceLabels":["Welcome to x402","Stripe machine payments"],"sourceUrls":["https://docs.cdp.coinbase.com/x402/welcome","https://docs.stripe.com/payments/machine"],"statement":"x402 is strongest when recurring commerce is really a stream of discrete billable requests rather than a long-lived subscription relationship."},{"chartTitles":["Which rail should dominate each subscription pattern"],"confidence":"high","id":"mpp-session-fit","kind":"comparison","section":"Session rails","sourceLabels":["Tempo Mainnet launch","Stripe machine payments"],"sourceUrls":["https://tempo.xyz/blog/mainnet","https://docs.stripe.com/payments/machine"],"statement":"Tempo and MPP are better suited to repeated bounded machine spending because sessions let operators authorize once and manage recurring activity inside explicit limits."},{"chartTitles":[],"confidence":"high","id":"merchant-treasury-dominates-recovery","kind":"comparison","section":"Retry, refill, and recovery","sourceLabels":["Stablecoins in Stripe financial accounts","Stripe stablecoin payouts","Circle USDC"],"sourceUrls":["https://docs.stripe.com/financial-accounts/stablecoins","https://docs.stripe.com/crypto/stablecoin-payouts?locale=en-GB","https://www.circle.com/usdc"],"statement":"When recurring subscriptions depend on refill, payouts, retries, and reconciliation, merchant and treasury surfaces matter more than a minimal payment protocol alone."},{"chartTitles":[],"confidence":"high","id":"wallet-policy-still-required","kind":"finding","section":"Wallet and policy","sourceLabels":["Privy wallet overview","Stripe machine payments"],"sourceUrls":["https://docs.privy.io/wallets/overview","https://docs.stripe.com/payments/machine"],"statement":"Recurring subscriptions still need a wallet and policy layer because a payment protocol does not by itself answer who may keep spending over time."},{"chartTitles":["B2B stablecoin payment volume already dominates measured flows"],"confidence":"medium","id":"b2b-volume-context","kind":"chart","section":"Market context","sourceLabels":["FinTech Futures stablecoin volumes"],"sourceUrls":["https://www.fintechfutures.com/blockchain-crypto-digital-assets/is-2026-a-make-or-break-year-for-stablecoins"],"statement":"Business-to-business stablecoin payment volume now dominates measured flows, which explains why recurring agent subscriptions need enterprise-style retry, treasury, and approval controls."}],"generatedAt":"2026-03-23T00:00:00.000Z","slug":"stablecoin-subscription-rails-for-agents-2026","summary":{"chartBackedClaimCount":3,"claimCount":6,"ecosystemSourceCount":1,"officialSourceCount":7,"totalSourceCount":8},"title":"Stablecoin Subscription Rails for Agents, 2026"},"generatedAt":"2026-05-04T00:16:33.260Z","kind":"deep_report_evidence","operatorAccess":null,"payer":null}