Japan Stablecoin Payment Monitor · Usdc Stablecoin Payments

import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://open-pay.jp/api/paid/usdc/stablecoin-payments", {
  method: "GET",
});
const data = await res.json();

curl -X GET \
  "https://open-pay.jp/api/paid/usdc/stablecoin-payments?changedSince=2026-08-01" \
  -H "X-PAYMENT: <signed x402 payment>"

{
  "changes": [
    {
      "assets": [
        "USDC"
      ],
      "chains": [
        "base"
      ],
      "changeCategory": "service_launch",
      "changeType": "added",
      "date": "2026-08-10",
      "diffs": [
        {
          "currentValue": "commercial",
          "field": "status",
          "previousValue": null
        }
      ],
      "provider": "DG Stablecoin Payment Service",
      "sourceUrl": "https://www.garage.co.jp/pr/release/20260810/",
      "summary": "Digital Garage started commercial rollout of DG Stablecoin Payment Service (API-based merchant integration; initially USDC on Base, first offered to JCB and DGFT).",
      "summaryJa": "デジタルガレージが DG Stablecoin Payment Service の商用展開を開始 (API 接続の加盟店向け・当初は Base 上の USDC・JCB/DGFT へ先行提供)。"
    }
  ],
  "generatedAt": "2026-08-27T02:00:00.000Z",
  "hasMore": false,
  "licenseNotice": "Events summarize what official sources state; they are not availability guarantees or endorsements. Source rights remain with their owners.",
  "mode": "delta",
  "nextChangedSince": "2026-08-27",
  "notice": {
    "code": "sourced-facts-only",
    "detail": "Events summarize official announcements about stablecoin payment services in Japan; verify with each sourceUrl before relying on a change.",
    "termsUrl": "https://open-pay.jp/en/terms"
  },
  "providers": [
    {
      "announcedAt": "2026-08-10",
      "assets": [
        "USDC"
      ],
      "chains": [
        "base"
      ],
      "integrations": [
        "api"
      ],
      "lastEventDate": "2026-08-10",
      "merchantFee": null,
      "plannedPeriod": null,
      "posIntegration": null,
      "provider": "DG Stablecoin Payment Service",
      "region": "Japan",
      "settlementCurrency": null,
      "slug": "dg-sps",
      "sourceUrl": "https://www.garage.co.jp/pr/release/20260810/",
      "stage": "commercial",
      "startedAt": "2026-08-10",
      "verifiedAt": "2026-08-27"
    }
  ],
  "query": {
    "changedSince": "2026-08-01",
    "limit": 200
  },
  "schemaVersion": "1.0",
  "totalEvents": 7,
  "totalProviders": 7
}