diff --git a/server/.env.local.sample b/server/.env.local.sample
index b602a2b..8aa1746 100644
--- a/server/.env.local.sample
+++ b/server/.env.local.sample
@@ -1,2 +1,7 @@
 BASIC_AUTH_USERNAME=username
 BASIC_AUTH_PASSWORD=password
+
+GOOGLE_APPLICATION_CREDENTIALS=
+GOOGLE_WALLET_ISSUER_ID=
+GOOGLE_WALLET_CLASS_ID=
+GOOGLE_WALLET_USER_ID=
diff --git a/server/package-lock.json b/server/package-lock.json
index 3feab22..60e53a7 100644
--- a/server/package-lock.json
+++ b/server/package-lock.json
@@ -6,6 +6,8 @@
     "": {
       "dependencies": {
         "ethers": "^5.6.5",
+        "google-auth-library": "^8.0.2",
+        "jsonwebtoken": "^8.5.1",
         "next": "^12.1.6",
         "nextjs-basic-auth": "^0.1.3",
         "wagmi": "^0.3.5"
@@ -1986,6 +1988,17 @@
         "@walletconnect/window-getters": "^1.0.0"
       }
     },
+    "node_modules/abort-controller": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/abort-controller/-/abort-controller-3.0.0.tgz",
+      "integrity": "sha512-h8lQ8tacZYnR3vNQTgibj+tODHI5/+l06Au2Pcriv/Gmet0eaj4TwWH41sO9wnHDiQsEj19q0drzdWdeAHtweg==",
+      "dependencies": {
+        "event-target-shim": "^5.0.0"
+      },
+      "engines": {
+        "node": ">=6.5"
+      }
+    },
     "node_modules/acorn": {
       "version": "8.7.1",
       "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.7.1.tgz",
@@ -2014,6 +2027,17 @@
       "resolved": "https://registry.npmjs.org/aes-js/-/aes-js-3.0.0.tgz",
       "integrity": "sha512-H7wUZRn8WpTq9jocdxQ2c8x2sKo9ZVmzfRE13GiNJXfp7NcKYEdvl3vspKjXox6RIG2VtaRe4JFvxG4rqp2Zuw=="
     },
+    "node_modules/agent-base": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-6.0.2.tgz",
+      "integrity": "sha512-RZNwNclF7+MS/8bDg70amg32dyeZGZxiDuQmZxKLAlQjr3jGyLx+4Kkk58UO7D2QdgFIQCovuSuZESne6RG6XQ==",
+      "dependencies": {
+        "debug": "4"
+      },
+      "engines": {
+        "node": ">= 6.0.0"
+      }
+    },
     "node_modules/ajv": {
       "version": "6.12.6",
       "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.6.tgz",
@@ -2141,6 +2165,14 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/arrify": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/arrify/-/arrify-2.0.1.tgz",
+      "integrity": "sha512-3duEwti880xqi4eAMN8AyR4a0ByT90zoYdLlevfrvU43vb0YZwZVfxOgxWrLXXXpyugL0hNZc9G6BiB5B3nUug==",
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/ast-types-flow": {
       "version": "0.0.7",
       "resolved": "https://registry.npmjs.org/ast-types-flow/-/ast-types-flow-0.0.7.tgz",
@@ -2272,6 +2304,14 @@
         "node": ">=0.6"
       }
     },
+    "node_modules/bignumber.js": {
+      "version": "9.0.2",
+      "resolved": "https://registry.npmjs.org/bignumber.js/-/bignumber.js-9.0.2.tgz",
+      "integrity": "sha512-GAcQvbpsM0pUb0zw1EI0KhQEZ+lRwR5fYaAp3vPOYuP7aDvGy6cVN6XHLauvF8SOga2y0dcLcjt3iQDTSEliyw==",
+      "engines": {
+        "node": "*"
+      }
+    },
     "node_modules/bind-decorator": {
       "version": "1.0.11",
       "resolved": "https://registry.npmjs.org/bind-decorator/-/bind-decorator-1.0.11.tgz",
@@ -2435,6 +2475,11 @@
       "resolved": "https://registry.npmjs.org/buffer-alloc-unsafe/-/buffer-alloc-unsafe-1.1.0.tgz",
       "integrity": "sha512-TEM2iMIEQdJ2yjPJoSIsldnleVaAk1oW3DBVUykyOLsEsFmEc9kn+SFFPz+gl54KQNxlDnAwCXosOS9Okx2xAg=="
     },
+    "node_modules/buffer-equal-constant-time": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/buffer-equal-constant-time/-/buffer-equal-constant-time-1.0.1.tgz",
+      "integrity": "sha512-zRpUiDwd/xk6ADqPMATG8vc9VPrkck7T07OIx0gnjmJAnHnTVXNQG3vfvWNuiZIkwu9KrKdA1iJKfsfTVxE6NA=="
+    },
     "node_modules/buffer-fill": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/buffer-fill/-/buffer-fill-1.0.0.tgz",
@@ -2795,6 +2840,14 @@
         "node": ">=6.0.0"
       }
     },
+    "node_modules/ecdsa-sig-formatter": {
+      "version": "1.0.11",
+      "resolved": "https://registry.npmjs.org/ecdsa-sig-formatter/-/ecdsa-sig-formatter-1.0.11.tgz",
+      "integrity": "sha512-nagl3RYrbNv6kQkeJIpt6NJZy8twLB/2vtz6yN9Z4vRKHN4/QZJIEbqohALSgwKdnksuY3k5Addp5lg8sVoVcQ==",
+      "dependencies": {
+        "safe-buffer": "^5.0.1"
+      }
+    },
     "node_modules/eip1193-provider": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/eip1193-provider/-/eip1193-provider-1.0.1.tgz",
@@ -3556,6 +3609,14 @@
         "npm": ">=3"
       }
     },
+    "node_modules/event-target-shim": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/event-target-shim/-/event-target-shim-5.0.1.tgz",
+      "integrity": "sha512-i/2XbnSz/uxRCU6+NdVJgKWDTM427+MqYbkQzD321DuCQJUqOuJKIA0IM2+W2xtYHdKOmZ4dR6fExsd4SXL+WQ==",
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/eventemitter3": {
       "version": "4.0.7",
       "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-4.0.7.tgz",
@@ -3578,6 +3639,11 @@
         "safe-buffer": "^5.1.1"
       }
     },
+    "node_modules/extend": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/extend/-/extend-3.0.2.tgz",
+      "integrity": "sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g=="
+    },
     "node_modules/fast-deep-equal": {
       "version": "3.1.3",
       "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
@@ -3632,6 +3698,11 @@
       "resolved": "https://registry.npmjs.org/fast-safe-stringify/-/fast-safe-stringify-2.1.1.tgz",
       "integrity": "sha512-W+KJc2dmILlPplD/H4K9l9LcAHAfPtP6BY84uVLXQ6Evcz9Lcg33Y2z1IVblT6xdY54PXYVHEv+0Wpq8Io6zkA=="
     },
+    "node_modules/fast-text-encoding": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/fast-text-encoding/-/fast-text-encoding-1.0.3.tgz",
+      "integrity": "sha512-dtm4QZH9nZtcDt8qJiOH9fcQd1NAgi+K1O2DbE6GG1PPCK/BWfOH3idCTRQ4ImXRUOyopDEgDEnVEE7Y/2Wrig=="
+    },
     "node_modules/fastq": {
       "version": "1.13.0",
       "resolved": "https://registry.npmjs.org/fastq/-/fastq-1.13.0.tgz",
@@ -3762,6 +3833,33 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/gaxios": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/gaxios/-/gaxios-5.0.0.tgz",
+      "integrity": "sha512-VD/yc5ln6XU8Ch1hyYY6kRMBE0Yc2np3fPyeJeYHhrPs1i8rgnsApPMWyrugkl7LLoSqpOJVBWlQIa87OAvt8Q==",
+      "dependencies": {
+        "abort-controller": "^3.0.0",
+        "extend": "^3.0.2",
+        "https-proxy-agent": "^5.0.0",
+        "is-stream": "^2.0.0",
+        "node-fetch": "^2.6.7"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/gcp-metadata": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/gcp-metadata/-/gcp-metadata-5.0.0.tgz",
+      "integrity": "sha512-gfwuX3yA3nNsHSWUL4KG90UulNiq922Ukj3wLTrcnX33BB7PwB1o0ubR8KVvXu9nJH+P5w1j2SQSNNqto+H0DA==",
+      "dependencies": {
+        "gaxios": "^5.0.0",
+        "json-bigint": "^1.0.0"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/gensync": {
       "version": "1.0.0-beta.2",
       "resolved": "https://registry.npmjs.org/gensync/-/gensync-1.0.0-beta.2.tgz",
@@ -3876,6 +3974,67 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/google-auth-library": {
+      "version": "8.0.2",
+      "resolved": "https://registry.npmjs.org/google-auth-library/-/google-auth-library-8.0.2.tgz",
+      "integrity": "sha512-HoG+nWFAThLovKpvcbYzxgn+nBJPTfAwtq0GxPN821nOO+21+8oP7MoEHfd1sbDulUFFGfcjJr2CnJ4YssHcyg==",
+      "dependencies": {
+        "arrify": "^2.0.0",
+        "base64-js": "^1.3.0",
+        "ecdsa-sig-formatter": "^1.0.11",
+        "fast-text-encoding": "^1.0.0",
+        "gaxios": "^5.0.0",
+        "gcp-metadata": "^5.0.0",
+        "gtoken": "^5.3.2",
+        "jws": "^4.0.0",
+        "lru-cache": "^6.0.0"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/google-p12-pem": {
+      "version": "3.1.4",
+      "resolved": "https://registry.npmjs.org/google-p12-pem/-/google-p12-pem-3.1.4.tgz",
+      "integrity": "sha512-HHuHmkLgwjdmVRngf5+gSmpkyaRI6QmOg77J8tkNBHhNEI62sGHyw4/+UkgyZEI7h84NbWprXDJ+sa3xOYFvTg==",
+      "dependencies": {
+        "node-forge": "^1.3.1"
+      },
+      "bin": {
+        "gp12-pem": "build/src/bin/gp12-pem.js"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/gtoken": {
+      "version": "5.3.2",
+      "resolved": "https://registry.npmjs.org/gtoken/-/gtoken-5.3.2.tgz",
+      "integrity": "sha512-gkvEKREW7dXWF8NV8pVrKfW7WqReAmjjkMBh6lNCCGOM4ucS0r0YyXXl0r/9Yj8wcW/32ISkfc8h5mPTDbtifQ==",
+      "dependencies": {
+        "gaxios": "^4.0.0",
+        "google-p12-pem": "^3.1.3",
+        "jws": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/gtoken/node_modules/gaxios": {
+      "version": "4.3.3",
+      "resolved": "https://registry.npmjs.org/gaxios/-/gaxios-4.3.3.tgz",
+      "integrity": "sha512-gSaYYIO1Y3wUtdfHmjDUZ8LWaxJQpiavzbF5Kq53akSzvmVg0RfyOcFDbO1KJ/KCGRFz2qG+lS81F0nkr7cRJA==",
+      "dependencies": {
+        "abort-controller": "^3.0.0",
+        "extend": "^3.0.2",
+        "https-proxy-agent": "^5.0.0",
+        "is-stream": "^2.0.0",
+        "node-fetch": "^2.6.7"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
     "node_modules/has": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/has/-/has-1.0.3.tgz",
@@ -3995,6 +4154,18 @@
         "minimalistic-crypto-utils": "^1.0.1"
       }
     },
+    "node_modules/https-proxy-agent": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-5.0.1.tgz",
+      "integrity": "sha512-dFcAjpTQFgoLMzC2VwU+C/CbS7uRL0lWmxDITmqm7C+7F0Odmj6s9l6alZc6AELXhrnggM2CeWSXHGOdX2YtwA==",
+      "dependencies": {
+        "agent-base": "6",
+        "debug": "4"
+      },
+      "engines": {
+        "node": ">= 6"
+      }
+    },
     "node_modules/ieee754": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/ieee754/-/ieee754-1.2.1.tgz",
@@ -4246,6 +4417,17 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/is-stream": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/is-stream/-/is-stream-2.0.1.tgz",
+      "integrity": "sha512-hFoiJiTl63nn+kstHGBtewWSKnQLpyb155KHheA1l39uvtO9nWIop1p3udqPcUd/xbF1VLMO4n7OI6p7RbngDg==",
+      "engines": {
+        "node": ">=8"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/is-string": {
       "version": "1.0.7",
       "resolved": "https://registry.npmjs.org/is-string/-/is-string-1.0.7.tgz",
@@ -4344,6 +4526,14 @@
         "node": ">=4"
       }
     },
+    "node_modules/json-bigint": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/json-bigint/-/json-bigint-1.0.0.tgz",
+      "integrity": "sha512-SiPv/8VpZuWbvLSMtTDU8hEfrZWg/mH/nV/b4o0CYbSxu1UIQPLdwKOCIyLQX+VIPO5vrLX3i8qtqFyhdPSUSQ==",
+      "dependencies": {
+        "bignumber.js": "^9.0.0"
+      }
+    },
     "node_modules/json-rpc-engine": {
       "version": "6.1.0",
       "resolved": "https://registry.npmjs.org/json-rpc-engine/-/json-rpc-engine-6.1.0.tgz",
@@ -4403,6 +4593,54 @@
         "node": "*"
       }
     },
+    "node_modules/jsonwebtoken": {
+      "version": "8.5.1",
+      "resolved": "https://registry.npmjs.org/jsonwebtoken/-/jsonwebtoken-8.5.1.tgz",
+      "integrity": "sha512-XjwVfRS6jTMsqYs0EsuJ4LGxXV14zQybNd4L2r0UvbVnSF9Af8x7p5MzbJ90Ioz/9TI41/hTCvznF/loiSzn8w==",
+      "dependencies": {
+        "jws": "^3.2.2",
+        "lodash.includes": "^4.3.0",
+        "lodash.isboolean": "^3.0.3",
+        "lodash.isinteger": "^4.0.4",
+        "lodash.isnumber": "^3.0.3",
+        "lodash.isplainobject": "^4.0.6",
+        "lodash.isstring": "^4.0.1",
+        "lodash.once": "^4.0.0",
+        "ms": "^2.1.1",
+        "semver": "^5.6.0"
+      },
+      "engines": {
+        "node": ">=4",
+        "npm": ">=1.4.28"
+      }
+    },
+    "node_modules/jsonwebtoken/node_modules/jwa": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/jwa/-/jwa-1.4.1.tgz",
+      "integrity": "sha512-qiLX/xhEEFKUAJ6FiBMbes3w9ATzyk5W7Hvzpa/SLYdxNtng+gcurvrI7TbACjIXlsJyr05/S1oUhZrc63evQA==",
+      "dependencies": {
+        "buffer-equal-constant-time": "1.0.1",
+        "ecdsa-sig-formatter": "1.0.11",
+        "safe-buffer": "^5.0.1"
+      }
+    },
+    "node_modules/jsonwebtoken/node_modules/jws": {
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/jws/-/jws-3.2.2.tgz",
+      "integrity": "sha512-YHlZCB6lMTllWDtSPHz/ZXTsi8S00usEV6v1tjq8tOUZzw7DpSDWVXjXDre6ed1w/pd495ODpHZYSdkRTsa0HA==",
+      "dependencies": {
+        "jwa": "^1.4.1",
+        "safe-buffer": "^5.0.1"
+      }
+    },
+    "node_modules/jsonwebtoken/node_modules/semver": {
+      "version": "5.7.1",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
+      "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==",
+      "bin": {
+        "semver": "bin/semver"
+      }
+    },
     "node_modules/jsx-ast-utils": {
       "version": "3.3.0",
       "resolved": "https://registry.npmjs.org/jsx-ast-utils/-/jsx-ast-utils-3.3.0.tgz",
@@ -4416,6 +4654,25 @@
         "node": ">=4.0"
       }
     },
+    "node_modules/jwa": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/jwa/-/jwa-2.0.0.tgz",
+      "integrity": "sha512-jrZ2Qx916EA+fq9cEAeCROWPTfCwi1IVHqT2tapuqLEVVDKFDENFw1oL+MwrTvH6msKxsd1YTDVw6uKEcsrLEA==",
+      "dependencies": {
+        "buffer-equal-constant-time": "1.0.1",
+        "ecdsa-sig-formatter": "1.0.11",
+        "safe-buffer": "^5.0.1"
+      }
+    },
+    "node_modules/jws": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/jws/-/jws-4.0.0.tgz",
+      "integrity": "sha512-KDncfTmOZoOMTFG4mBlG0qUIOlc03fmzH+ru6RgYVZhPkyiy/92Owlt/8UEN+a4TXR1FQetfIpJE8ApdvdVxTg==",
+      "dependencies": {
+        "jwa": "^2.0.0",
+        "safe-buffer": "^5.0.1"
+      }
+    },
     "node_modules/keccak": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/keccak/-/keccak-3.0.2.tgz",
@@ -4482,6 +4739,36 @@
       "resolved": "https://registry.npmjs.org/lodash.debounce/-/lodash.debounce-4.0.8.tgz",
       "integrity": "sha1-gteb/zCmfEAF/9XiUVMArZyk168="
     },
+    "node_modules/lodash.includes": {
+      "version": "4.3.0",
+      "resolved": "https://registry.npmjs.org/lodash.includes/-/lodash.includes-4.3.0.tgz",
+      "integrity": "sha1-YLuYqHy5I8aMoeUTJUgzFISfVT8="
+    },
+    "node_modules/lodash.isboolean": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/lodash.isboolean/-/lodash.isboolean-3.0.3.tgz",
+      "integrity": "sha1-bC4XHbKiV82WgC/UOwGyDV9YcPY="
+    },
+    "node_modules/lodash.isinteger": {
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/lodash.isinteger/-/lodash.isinteger-4.0.4.tgz",
+      "integrity": "sha1-YZwK89A/iwTDH1iChAt3sRzWg0M="
+    },
+    "node_modules/lodash.isnumber": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/lodash.isnumber/-/lodash.isnumber-3.0.3.tgz",
+      "integrity": "sha1-POdoEMWSjQM1IwGsKHMX8RwLH/w="
+    },
+    "node_modules/lodash.isplainobject": {
+      "version": "4.0.6",
+      "resolved": "https://registry.npmjs.org/lodash.isplainobject/-/lodash.isplainobject-4.0.6.tgz",
+      "integrity": "sha1-fFJqUtibRcRcxpC4gWO+BJf1UMs="
+    },
+    "node_modules/lodash.isstring": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/lodash.isstring/-/lodash.isstring-4.0.1.tgz",
+      "integrity": "sha1-1SfftUVuynzJu5XV2ur4i6VKVFE="
+    },
     "node_modules/lodash.merge": {
       "version": "4.6.2",
       "resolved": "https://registry.npmjs.org/lodash.merge/-/lodash.merge-4.6.2.tgz",
@@ -4489,6 +4776,11 @@
       "dev": true,
       "peer": true
     },
+    "node_modules/lodash.once": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/lodash.once/-/lodash.once-4.1.1.tgz",
+      "integrity": "sha1-DdOXEhPHxW34gJd9UEyI+0cal6w="
+    },
     "node_modules/loose-envify": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/loose-envify/-/loose-envify-1.4.0.tgz",
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       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
       "integrity": "sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==",
-      "dev": true,
       "requires": {
         "yallist": "^4.0.0"
       }
@@ -9595,6 +10134,11 @@
         "whatwg-url": "^5.0.0"
       }
     },
+    "node-forge": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/node-forge/-/node-forge-1.3.1.tgz",
+      "integrity": "sha512-dPEtOeMvF9VMcYV/1Wb8CPoVAXtp6MKMlcbAt4ddqmGqUJ6fQZFXkNZNkNlfevtNkGtaSoXf/vNNNSvgrdXwtA=="
+    },
     "node-gyp-build": {
       "version": "4.4.0",
       "resolved": "https://registry.npmjs.org/node-gyp-build/-/node-gyp-build-4.4.0.tgz",
@@ -10573,8 +11117,7 @@
     "yallist": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
-      "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==",
-      "dev": true
+      "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="
     },
     "yargs": {
       "version": "13.3.2",
diff --git a/server/package.json b/server/package.json
index 9ddccf1..c755002 100644
--- a/server/package.json
+++ b/server/package.json
@@ -8,6 +8,8 @@
   },
   "dependencies": {
     "ethers": "^5.6.5",
+    "google-auth-library": "^8.0.2",
+    "jsonwebtoken": "^8.5.1",
     "next": "^12.1.6",
     "nextjs-basic-auth": "^0.1.3",
     "wagmi": "^0.3.5"
diff --git a/server/utils/GoogleAuthUtils.ts b/server/utils/GoogleAuthUtils.ts
new file mode 100644
index 0000000..2e29bca
--- /dev/null
+++ b/server/utils/GoogleAuthUtils.ts
@@ -0,0 +1,28 @@
+const { GoogleAuth } = require('google-auth-library')
+const jwt = require('jsonwebtoken')
+
+export class GoogleAuthUtils {
+
+    static retrieveCredentials() {
+        console.log('retrieveCredentials')
+
+        // Path to service account key file obtained from Google CLoud Console.
+        const serviceAccountFile = process.env.GOOGLE_APPLICATION_CREDENTIALS || '/path/to/key.json'
+
+        // Issuer ID obtained from Google Pay Business Console.
+        const issuerId = process.env.GOOGLE_WALLET_ISSUER_ID || '<issuer ID>'
+
+        // Developer defined ID for the wallet class.
+        const classId = process.env.GOOGLE_WALLET_CLASS_ID || 'test-generic-class-id'
+
+        // Developer defined ID for the user, eg an email address.
+        const userId = process.env.GOOGLE_WALLET_USER_ID || 'test@example.com'
+
+        // ID for the wallet object, must be in the form `issuerId.userId` where userId is alphanumeric.
+        const objectId = `${issuerId}.${userId.replace(/[^\w.-]/g, '_')}-${classId}`
+
+        const credentials = require(serviceAccountFile)
+
+        return credentials
+    }   
+}