defs: add Polis (#308)

.gitignore

@@ -6,3 +6,4 @@ tools/coins.json
 tools/coindefs.json
 tools/coinmarketcap.json
 proto.gv*
+.idea/*

defs/bitcoin/polis.json

@@ -0,0 +1,41 @@
+{
+  "coin_name": "Polis",
+  "coin_shortcut": "POLIS",
+  "coin_label": "Polis",
+  "website": "https://www.polispay.org",
+  "github": "https://github.com/polispay/polis",
+  "maintainer": "Cronos <eabz@polispay.org>",
+  "curve_name": "secp256k1",
+  "address_type": 55,
+  "address_type_p2sh": 56,
+  "maxfee_kb": 100000,
+  "minfee_kb": 1000,
+  "signed_message_header": "Polis Signed Message:\n",
+  "hash_genesis_block": "000009701eb781a8113b1af1d814e2f060f6408a2c990db291bc5108a1345c1e",
+  "xprv_magic": 65166718,
+  "xpub_magic": 65165637,
+  "xpub_magic_segwit_p2sh": null,
+  "xpub_magic_segwit_native": null,
+  "bech32_prefix": null,
+  "cashaddr_prefix": null,
+  "slip44": 1997,
+  "segwit": false,
+  "decred": false,
+  "fork_id": null,
+  "force_bip143": false,
+  "bip115": false,
+  "default_fee_b": {
+    "Normal": 10
+  },
+  "dust_limit": 5460,
+  "blocktime_seconds": 120,
+  "uri_prefix": "polis",
+  "min_address_length": 27,
+  "max_address_length": 34,
+  "bitcore": [],
+  "blockbook": [
+    "https://blockbook.polispay.org"
+  ],
+  "cooldown": 100,
+  "consensus_branch_id": null
+}