add GameCredits (#213)

defs/bitcoin/gamecredits.json

@@ -0,0 +1,39 @@
+{
+  "coin_name": "GameCredits",
+  "coin_shortcut": "GAME",
+  "coin_label": "GameCredits",
+  "website": "https://gamecredits.org",
+  "github": "https://github.com/gamecredits-project/gamecredits",
+  "maintainer": "Samad Sajanlal <samad.sajanlal@gmail.com>",
+  "curve_name": "secp256k1",
+  "address_type": 38,
+  "address_type_p2sh": 62,
+  "maxfee_kb": 5000000,
+  "minfee_kb": 100000,
+  "signed_message_header": "GameCredits Signed Message:\n",
+  "hash_genesis_block": "91ec5f25ee9a0ffa1af7d4da4db9a552228dd2dc77cdb15b738be4e1f55f30ee",
+  "xpub_magic": 27106558,
+  "xprv_magic": 27108450,
+  "xpub_magic_segwit_p2sh": 28471030,
+  "xpub_magic_segwit_native": null,
+  "bech32_prefix": "game",
+  "cashaddr_prefix": null,
+  "slip44": 101,
+  "segwit": true,
+  "decred": false,
+  "fork_id": null,
+  "force_bip143": false,
+  "bip115": false,
+  "version_group_id": null,
+  "default_fee_b": {
+    "Normal": 1000
+  },
+  "dust_limit": 54600,
+  "blocktime_seconds": 90,
+  "uri_prefix": "gamecredits",
+  "min_address_length": 27,
+  "max_address_length": 34,
+  "bitcore": [],
+  "blockbook": [],
+  "cooldown": 100
+}