diff --git a/defs/coins_details.json b/defs/coins_details.json
index 763c049e95..5d2abd7ea6 100644
--- a/defs/coins_details.json
+++ b/defs/coins_details.json
@@ -11,6 +11,21 @@
             "t2_enabled": "soon",
             "type": "coin"
         },
+        "coin2:CLO": {
+            "links": {
+                "Homepage": "https://callisto.network"
+            },
+            "marketcap_usd": 0,
+            "name": "Callisto",
+            "shortcut": "CLO",
+            "t1_enabled": "yes",
+            "t2_enabled": "yes",
+            "type": "coin",
+            "wallet": {
+                "MyCrypto": "https://mycrypto.com",
+                "MyEtherWallet": "https://www.myetherwallet.com"
+            }
+        },
         "coin2:EGEM": {
             "links": {
                 "Homepage": "https://egem.io"
@@ -56,6 +71,21 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
+        "coin2:ESN": {
+            "links": {
+                "Homepage": "https://ethersocial.org"
+            },
+            "marketcap_usd": 0,
+            "name": "Ethersocial Network",
+            "shortcut": "ESN",
+            "t1_enabled": "yes",
+            "t2_enabled": "yes",
+            "type": "coin",
+            "wallet": {
+                "MyCrypto": "https://mycrypto.com",
+                "MyEtherWallet": "https://www.myetherwallet.com"
+            }
+        },
         "coin2:ETC": {
             "links": {
                 "Homepage": "https://ethereumclassic.github.io"
@@ -91,7 +121,7 @@
                 "Homepage": "https://ethereumsocial.kr"
             },
             "marketcap_usd": 0,
-            "name": "EthereumSocial",
+            "name": "Ethereum Social",
             "shortcut": "ETSC",
             "t1_enabled": "yes",
             "t2_enabled": "yes",
@@ -103,7 +133,7 @@
         },
         "coin2:EXP": {
             "links": {
-                "Homepage": "https://www.expanse.tech"
+                "Homepage": "https://expanse.tech"
             },
             "marketcap_usd": 10593934,
             "name": "Expanse",
@@ -116,11 +146,26 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
+        "coin2:GO": {
+            "links": {
+                "Homepage": "https://gochain.io"
+            },
+            "marketcap_usd": 37459560,
+            "name": "GoChain",
+            "shortcut": "GO",
+            "t1_enabled": "yes",
+            "t2_enabled": "yes",
+            "type": "coin",
+            "wallet": {
+                "MyCrypto": "https://mycrypto.com",
+                "MyEtherWallet": "https://www.myetherwallet.com"
+            }
+        },
         "coin2:LSK": {
             "links": {
                 "Homepage": "https://lisk.io/"
             },
-            "marketcap_usd": 997454377,
+            "marketcap_usd": 548473107,
             "name": "Lisk",
             "shortcut": "LSK",
             "t1_enabled": "no",
@@ -161,18 +206,19 @@
             "links": {
                 "Homepage": "https://www.stellar.org"
             },
-            "marketcap_usd": 5331912521,
+            "marketcap_usd": 5315301581,
             "name": "Stellar",
             "notes": "In development",
             "shortcut": "XLM",
             "t1_enabled": "soon",
-            "t2_enabled": "soon"
+            "t2_enabled": "soon",
+            "type": "coin"
         },
         "coin2:XMR": {
             "links": {
                 "Homepage": "https://getmonero.org"
             },
-            "marketcap_usd": 2831629582,
+            "marketcap_usd": 2215103721,
             "name": "Monero",
             "notes": "In development",
             "shortcut": "XMR",
@@ -184,7 +230,7 @@
             "links": {
                 "Homepage": "https://ripple.com"
             },
-            "marketcap_usd": 24313181966,
+            "marketcap_usd": 18016097427,
             "name": "Ripple",
             "notes": "In development",
             "shortcut": "XRP",
@@ -203,10 +249,58 @@
             "t2_enabled": "soon",
             "type": "coin"
         },
+        "coin2:tETC": {
+            "hidden": 1,
+            "links": {
+                "Homepage": "https://ethereumclassic.github.io"
+            },
+            "marketcap_usd": 0,
+            "name": "Ethereum Classic Testnet",
+            "shortcut": "tETC",
+            "t1_enabled": "yes",
+            "t2_enabled": "yes",
+            "type": "coin",
+            "wallet": {
+                "MyCrypto": "https://mycrypto.com",
+                "MyEtherWallet": "https://www.myetherwallet.com"
+            }
+        },
+        "coin2:tETH": {
+            "hidden": 1,
+            "links": {
+                "Homepage": "https://www.ethereum.org"
+            },
+            "marketcap_usd": 0,
+            "name": "Ethereum Testnet Kovan",
+            "shortcut": "tETH",
+            "t1_enabled": "yes",
+            "t2_enabled": "yes",
+            "type": "coin",
+            "wallet": {
+                "MyCrypto": "https://mycrypto.com",
+                "MyEtherWallet": "https://www.myetherwallet.com"
+            }
+        },
+        "coin2:tRSK": {
+            "hidden": 1,
+            "links": {
+                "Homepage": "https://www.rsk.co"
+            },
+            "marketcap_usd": 0,
+            "name": "RSK Testnet",
+            "shortcut": "tRSK",
+            "t1_enabled": "yes",
+            "t2_enabled": "yes",
+            "type": "coin",
+            "wallet": {
+                "MyCrypto": "https://mycrypto.com",
+                "MyEtherWallet": "https://www.myetherwallet.com"
+            }
+        },
         "coin:BCH": {
             "links": {
                 "Github": "https://github.com/Bitcoin-ABC/bitcoin-abc",
-                "Homepage": "https://www.bitcoincash.org/"
+                "Homepage": "https://www.bitcoincash.org"
             },
             "marketcap_usd": 13729622285,
             "name": "Bitcoin Cash",
@@ -246,7 +340,9 @@
             "t1_enabled": "yes",
             "t2_enabled": "yes",
             "type": "coin",
-            "wallet": {}
+            "wallet": {
+                "BTCP Electrum": "https://github.com/BTCPrivate/electrum-btcp"
+            }
         },
         "coin:BTG": {
             "links": {
@@ -260,6 +356,7 @@
             "t2_enabled": "yes",
             "type": "coin",
             "wallet": {
+                "ElectrumG": "https://github.com/BTCGPU/electrum",
                 "Trezor": "https://wallet.trezor.io"
             }
         },
@@ -301,6 +398,7 @@
             "t2_enabled": "yes",
             "type": "coin",
             "wallet": {
+                "Dash Electrum": "https://electrum.dash.org",
                 "Trezor": "https://wallet.trezor.io"
             }
         },
@@ -320,7 +418,7 @@
         "coin:DGB": {
             "links": {
                 "Github": "https://github.com/digibyte/digibyte",
-                "Homepage": "https://www.digibyte.co"
+                "Homepage": "https://digibyte.io"
             },
             "marketcap_usd": 472432594,
             "name": "DigiByte",
@@ -345,7 +443,7 @@
         "coin:DOGE": {
             "links": {
                 "Github": "https://github.com/dogecoin/dogecoin",
-                "Homepage": "https://dogecoin.com"
+                "Homepage": "http://dogecoin.com"
             },
             "marketcap_usd": 416955600,
             "name": "Dogecoin",
@@ -360,7 +458,7 @@
         "coin:FJC": {
             "links": {
                 "Github": "https://github.com/fujicoin/fujicoin",
-                "Homepage": "https://www.fujicoin.org"
+                "Homepage": "http://fujicoin.org"
             },
             "marketcap_usd": 871352,
             "name": "Fujicoin",
@@ -377,6 +475,7 @@
                 "Github": "https://github.com/flash-coin",
                 "Homepage": "https://www.flashcoin.io"
             },
+            "marketcap_usd": 6262092,
             "name": "Flashcoin",
             "shortcut": "FLASH",
             "t1_enabled": "no",
@@ -414,8 +513,8 @@
         },
         "coin:KOTO": {
             "links": {
-                "Github": "https://github.com/koto-dev/koto",
-                "Homepage": "https://koto.cash"
+                "Github": "https://github.com/KotoDevelopers/koto",
+                "Homepage": "https://ko-to.org"
             },
             "name": "Koto",
             "shortcut": "KOTO",
@@ -524,6 +623,7 @@
             "wallet": {}
         },
         "coin:TBTG": {
+            "hidden": 1,
             "links": {
                 "Github": "https://github.com/BTCGPU/BTCGPU",
                 "Homepage": "https://bitcoingold.org"
@@ -591,7 +691,6 @@
             "wallet": {}
         },
         "coin:VIA": {
-            "hidden": 1,
             "links": {
                 "Github": "https://github.com/viacoin",
                 "Homepage": "https://viacoin.org"
@@ -602,7 +701,9 @@
             "t1_enabled": "yes",
             "t2_enabled": "yes",
             "type": "coin",
-            "wallet": {}
+            "wallet": {
+                "Vialectrum": "https://vialectrum.org"
+            }
         },
         "coin:VTC": {
             "links": {
@@ -651,7 +752,7 @@
         "coin:ZEC": {
             "links": {
                 "Github": "https://github.com/zcash/zcash",
-                "Homepage": "z.cash"
+                "Homepage": "https://z.cash"
             },
             "marketcap_usd": 855681961,
             "name": "Zcash",
@@ -751,23 +852,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:etc:PLAY": {
-            "address": "0x5acE17f87c7391E5792a7683069A8025B83bbd85",
-            "links": {
-                "Homepage": "http://smartbillions.com/"
-            },
-            "marketcap_usd": 0,
-            "name": "Smart Billions",
-            "network": "etc",
-            "shortcut": "PLAY",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:$FFC": {
             "address": "0x4E84E9e5fb0A972628Cf4568c403167EF1D40431",
             "links": {
@@ -1404,9 +1488,9 @@
                 "Homepage": "https://arcade.city"
             },
             "marketcap_usd": 0,
-            "name": "Arcade",
+            "name": "ARC",
             "network": "eth",
-            "shortcut": "ARCD",
+            "shortcut": "ARC",
             "t1_enabled": "yes",
             "t2_enabled": "yes",
             "type": "erc20",
@@ -2790,24 +2874,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:CARD": {
-            "address": "0xB07ec2c28834B889b1CE527Ca0F19364cD38935c",
-            "links": {
-                "Github": "https://github.com/cardstack",
-                "Homepage": "https://cardstack.com"
-            },
-            "marketcap_usd": 0,
-            "name": "Cardstack Token",
-            "network": "eth",
-            "shortcut": "CARD",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:CARE": {
             "address": "0xbF18F246B9301F231e9561B35A3879769BB46375",
             "links": {
@@ -3032,23 +3098,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:CDX": {
-            "address": "0x6fFF3806Bbac52A20e0d79BC538d527f6a22c96b",
-            "links": {
-                "Homepage": "https://commodityadnetwork.com"
-            },
-            "marketcap_usd": 0,
-            "name": "CDX",
-            "network": "eth",
-            "shortcut": "CDX",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:CEEK": {
             "address": "0xb056c38f6b7Dc4064367403E26424CD2c60655e1",
             "links": {
@@ -3432,23 +3481,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:COSS": {
-            "address": "0x65292EeadF1426Cd2dF1C4793a3d7519f253913b",
-            "links": {
-                "Homepage": "https://coss.io"
-            },
-            "marketcap_usd": 10338104,
-            "name": "Coss Token",
-            "network": "eth",
-            "shortcut": "COSS",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:COV": {
             "address": "0xE2FB6529EF566a080e6d23dE0bd351311087D567",
             "links": {
@@ -4206,7 +4238,7 @@
                 "Homepage": "https://digix.global"
             },
             "marketcap_usd": 2032107,
-            "name": "DGX",
+            "name": "Digix Gold Token",
             "network": "eth",
             "shortcut": "DGX",
             "t1_enabled": "yes",
@@ -4370,23 +4402,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:DOW": {
-            "address": "0x76974C7B79dC8a6a109Fd71fd7cEb9E40eff5382",
-            "links": {
-                "Homepage": "https://dowcoin.io/"
-            },
-            "marketcap_usd": 0,
-            "name": "DOW",
-            "network": "eth",
-            "shortcut": "DOW",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:DPP": {
             "address": "0x01b3Ec4aAe1B8729529BEB4965F27d008788B0EB",
             "links": {
@@ -4456,23 +4471,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:DRP": {
-            "address": "0x2799D90C6d44Cb9Aa5fBC377177F16C33E056b82",
-            "links": {
-                "Homepage": "http://drpcoin.com"
-            },
-            "marketcap_usd": 0,
-            "name": "Dripcoin",
-            "network": "eth",
-            "shortcut": "DRP",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:DRVH": {
             "address": "0x62D4c04644314F35868Ba4c65cc27a77681dE7a9",
             "links": {
@@ -4595,24 +4593,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:DUBI": {
-            "address": "0xD4CffeeF10F60eCA581b5E1146B5Aca4194a4C3b",
-            "links": {
-                "Github": "https://github.com/nionis/purpose",
-                "Homepage": "https://prps.io"
-            },
-            "marketcap_usd": 0,
-            "name": "Decentralized Universal Basic Income",
-            "network": "eth",
-            "shortcut": "DUBI",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:Devcon2 Token": {
             "address": "0xdd94De9cFE063577051A5eb7465D08317d8808B6",
             "links": {
@@ -4749,24 +4729,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:EDU": {
-            "address": "0x5b26C5D0772E5bbaC8b3182AE9a13f9BB2D03765",
-            "links": {
-                "Github": "https://github.com/livecodingtvofficial",
-                "Homepage": "https://tokensale.liveedu.tv"
-            },
-            "marketcap_usd": 0,
-            "name": "EDU",
-            "network": "eth",
-            "shortcut": "EDU",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:EGT": {
             "address": "0x8e1b448EC7aDFc7Fa35FC2e885678bD323176E34",
             "links": {
@@ -5017,7 +4979,6 @@
         },
         "erc20:eth:EOS": {
             "address": "0x86Fa049857E0209aa7D9e616F7eb3b3B78ECfdb0",
-            "hidden": 1,
             "links": {
                 "Homepage": "https://eos.io"
             },
@@ -5228,12 +5189,10 @@
         },
         "erc20:eth:E\u20b9": {
             "address": "0xb67734521eAbBE9C773729dB73E16CC2dfb20A58",
-            "hidden": 1,
             "links": {
                 "Github": "https://github.com/eRupee",
                 "Homepage": "https://erupee.wordpress.com"
             },
-            "marketcap_usd": 0,
             "name": "eRupee",
             "network": "eth",
             "shortcut": "E\u20b9",
@@ -5331,23 +5290,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:FLMC": {
-            "address": "0x04cC783b450b8D11F3C7d00DD03fDF7FB51fE9F2",
-            "links": {
-                "Homepage": "https://filmscoin.com"
-            },
-            "marketcap_usd": 0,
-            "name": "Filmscoin",
-            "network": "eth",
-            "shortcut": "FLMC",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:FLP": {
             "address": "0x3a1Bda28AdB5B0a812a7CF10A1950c920F79BcD3",
             "links": {
@@ -5504,23 +5446,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:FUCK": {
-            "address": "0xAb16E0d25c06CB376259cc18C1de4ACA57605589",
-            "links": {
-                "Homepage": "http://fucktoken.io"
-            },
-            "marketcap_usd": 0,
-            "name": "Finally Usable Crypto Karma",
-            "network": "eth",
-            "shortcut": "FUCK",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:FUEL": {
             "address": "0xEA38eAa3C86c8F9B751533Ba2E562deb9acDED40",
             "links": {
@@ -5608,24 +5533,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:GANA": {
-            "address": "0x6754e21b9EAa053c62d7854dD6561ae451B0cBCf",
-            "links": {
-                "Github": "https://github.com/GanaProject",
-                "Homepage": "https://ganacoin.io"
-            },
-            "marketcap_usd": 0,
-            "name": "GANA",
-            "network": "eth",
-            "shortcut": "GANA",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:GAVEL": {
             "address": "0x708876f486e448Ee89eB332bFbC8E593553058b9",
             "links": {
@@ -5977,24 +5884,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:GUP": {
-            "address": "0xf7B098298f7C69Fc14610bf71d5e02c60792894C",
-            "links": {
-                "Github": "https://github.com/Matchpool/",
-                "Homepage": "https://github.com/Matchpool/"
-            },
-            "marketcap_usd": 0,
-            "name": "GUP",
-            "network": "eth",
-            "shortcut": "GUP",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:GVT": {
             "address": "0x103c3A209da59d3E7C4A89307e66521e081CFDF0",
             "links": {
@@ -6258,24 +6147,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:HOT": {
-            "address": "0x9AF839687F6C94542ac5ece2e317dAAE355493A1",
-            "links": {
-                "Github": "https://github.com/Holo-Host",
-                "Homepage": "https://thehydrofoundation.com/"
-            },
-            "marketcap_usd": 21011913,
-            "name": "Hydro Protocol",
-            "network": "eth",
-            "shortcut": "HOT",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:HST": {
             "address": "0x554C20B7c486beeE439277b4540A434566dC4C02",
             "links": {
@@ -6349,12 +6220,10 @@
         },
         "erc20:eth:Hdp.\u0444": {
             "address": "0x84543F868eC1b1FAC510d49d13C069f64cD2d5f9",
-            "hidden": 1,
             "links": {
                 "Github": "https://github.com/HEDPAY",
                 "Homepage": "http://hedpay.com"
             },
-            "marketcap_usd": 0,
             "name": "HEdpAY",
             "network": "eth",
             "shortcut": "Hdp.\u0444",
@@ -6812,23 +6681,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:JBX": {
-            "address": "0x884e3902C4d5cFA86de4aCE7A96AA91EbC25C0Ff",
-            "links": {
-                "Homepage": "https://www.jboxcoin.org"
-            },
-            "marketcap_usd": 0,
-            "name": "JBX",
-            "network": "eth",
-            "shortcut": "JBX",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:JET": {
             "address": "0x8727c112C712c4a03371AC87a74dD6aB104Af768",
             "links": {
@@ -6883,9 +6735,8 @@
         },
         "erc20:eth:JetCoins": {
             "address": "0x773450335eD4ec3DB45aF74f34F2c85348645D39",
-            "links": {
-                "Homepage": "http://www.jetcoins.trade/"
-            },
+            "hidden": 1,
+            "links": {},
             "marketcap_usd": 0,
             "name": "JetCoins",
             "network": "eth",
@@ -6898,23 +6749,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:KC": {
-            "address": "0x0D6DD9f68d24EC1d5fE2174f3EC8DAB52B52BaF5",
-            "links": {
-                "Homepage": "https://www.kmcc.io"
-            },
-            "marketcap_usd": 0,
-            "name": "KMCC",
-            "network": "eth",
-            "shortcut": "KC",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:KEE": {
             "address": "0x72D32ac1c5E66BfC5b08806271f8eEF915545164",
             "hidden": 1,
@@ -6931,24 +6765,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:KEY": {
-            "address": "0x4CC19356f2D37338b9802aa8E8fc58B0373296E7",
-            "links": {
-                "Github": "https://github.com/bihu-id",
-                "Homepage": "https://selfkey.org"
-            },
-            "marketcap_usd": 25785161,
-            "name": "SelfKey",
-            "network": "eth",
-            "shortcut": "KEY",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:KICK": {
             "address": "0x27695E09149AdC738A978e9A678F99E4c39e9eb9",
             "links": {
@@ -7108,24 +6924,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:LEMO": {
-            "address": "0x60C24407d01782C2175D32fe7C8921ed732371D1",
-            "links": {
-                "Github": "https://github.com/LemoFoundationLtd",
-                "Homepage": "http://www.lemochain.com"
-            },
-            "marketcap_usd": 0,
-            "name": "Lemo",
-            "network": "eth",
-            "shortcut": "LEMO",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:LEND": {
             "address": "0x80fB784B7eD66730e8b1DBd9820aFD29931aab03",
             "hidden": 1,
@@ -7684,9 +7482,8 @@
         },
         "erc20:eth:MCAP": {
             "address": "0x93E682107d1E9defB0b5ee701C71707a4B2E46Bc",
-            "links": {
-                "Homepage": "https://www.mcaplabs.com/"
-            },
+            "hidden": 1,
+            "links": {},
             "marketcap_usd": 352675,
             "name": "MCAP",
             "network": "eth",
@@ -8482,24 +8279,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:NONE": {
-            "address": "0x643B6870beabee941B9260a0A878bcF4A61Fb0f1",
-            "hidden": 1,
-            "links": {
-                "Github": "https://github.com/walleth/contracts/tree/master/NoneToken"
-            },
-            "marketcap_usd": 0,
-            "name": "None",
-            "network": "eth",
-            "shortcut": "NONE",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:NOX": {
             "address": "0xeC46f8207D766012454c408De210BCBc2243E71c",
             "links": {
@@ -8674,24 +8453,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:OHNI": {
-            "address": "0x6f539a9456A5BCb6334A1A41207c3788f5825207",
-            "links": {
-                "Github": "ohnicoin",
-                "Homepage": "http://ohni.us"
-            },
-            "marketcap_usd": 0,
-            "name": "Ohni",
-            "network": "eth",
-            "shortcut": "OHNI",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:OJX": {
             "address": "0xBeef546ac8a4e0a80DC1E2d696968Ef54138f1d4",
             "links": {
@@ -8797,24 +8558,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:OPEN": {
-            "address": "0x69c4BB240cF05D51eeab6985Bab35527d04a8C64",
-            "links": {
-                "Github": "https://github.com/OpenMoneyDigital",
-                "Homepage": "https://openfuture.io"
-            },
-            "marketcap_usd": 0,
-            "name": "OPEN",
-            "network": "eth",
-            "shortcut": "OPEN",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:OPT": {
             "address": "0x4355fC160f74328f9b383dF2EC589bB3dFd82Ba0",
             "links": {
@@ -9200,23 +8943,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:PLAY": {
-            "address": "0xE477292f1B3268687A29376116B0ED27A9c76170",
-            "links": {
-                "Homepage": "http://www.herocoin.io"
-            },
-            "marketcap_usd": 1954962,
-            "name": "HeroCoin",
-            "network": "eth",
-            "shortcut": "PLAY",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:PLBT": {
             "address": "0x0AfFa06e7Fbe5bC9a764C979aA66E8256A631f02",
             "links": {
@@ -9510,24 +9236,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:PRPS": {
-            "address": "0x7641b2Ca9DDD58adDf6e3381c1F994Aac5f1A32f",
-            "links": {
-                "Github": "https://github.com/nionis/purpose",
-                "Homepage": "https://prps.io"
-            },
-            "marketcap_usd": 0,
-            "name": "Purpose",
-            "network": "eth",
-            "shortcut": "PRPS",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:PRS": {
             "address": "0x163733bcc28dbf26B41a8CfA83e369b5B3af741b",
             "links": {
@@ -9915,24 +9623,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:RDN": {
-            "address": "0x255Aa6DF07540Cb5d3d297f0D0D4D84cb52bc8e6",
-            "links": {
-                "Github": "https://github.com/raiden-network/raiden/",
-                "Homepage": "https://raiden.network"
-            },
-            "marketcap_usd": 0,
-            "name": "Raiden Network",
-            "network": "eth",
-            "shortcut": "RDN",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:REA": {
             "address": "0x767bA2915EC344015a7938E3eEDfeC2785195D05",
             "links": {
@@ -10003,23 +9693,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:REP": {
-            "address": "0x1985365e9f78359a9B6AD760e32412f4a445E862",
-            "links": {
-                "Homepage": "https://augur.net"
-            },
-            "marketcap_usd": 326795700,
-            "name": "Augur",
-            "network": "eth",
-            "shortcut": "REP",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:REQ": {
             "address": "0x8f8221aFbB33998d8584A2B05749bA73c37a938a",
             "links": {
@@ -10229,9 +9902,8 @@
         },
         "erc20:eth:ROUND": {
             "address": "0x4993CB95c7443bdC06155c5f5688Be9D8f6999a5",
-            "links": {
-                "Homepage": "http://roundcoin.org/"
-            },
+            "hidden": 1,
+            "links": {},
             "marketcap_usd": 0,
             "name": "ROUND",
             "network": "eth",
@@ -10484,23 +10156,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:SGT": {
-            "address": "0xd248B0D48E44aaF9c49aea0312be7E13a6dc1468",
-            "links": {
-                "Homepage": "https://sgt.selfieyo.com"
-            },
-            "marketcap_usd": 0,
-            "name": "SGT",
-            "network": "eth",
-            "shortcut": "SGT",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:SHIT": {
             "address": "0xEF2E9966eb61BB494E5375d5Df8d67B7dB8A780D",
             "links": {
@@ -10605,24 +10260,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:SKRP": {
-            "address": "0x6E34d8d84764D40f6D7b39cd569Fd017bF53177D",
-            "links": {
-                "Github": "https://github.com/SkrapsIO",
-                "Homepage": "https://skraps.io"
-            },
-            "marketcap_usd": 0,
-            "name": "Skraps",
-            "network": "eth",
-            "shortcut": "SKRP",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:SLT": {
             "address": "0x7A5fF295Dc8239d5C2374E4D894202aAF029Cab6",
             "links": {
@@ -10675,24 +10312,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:SMT": {
-            "address": "0x2dCFAAc11c9EebD8C6C42103Fe9e2a6AD237aF27",
-            "links": {
-                "Github": "https://github.com/SmartMeshFoundation",
-                "Homepage": "http://smartnode.org"
-            },
-            "marketcap_usd": 51274091,
-            "name": "SmartMesh",
-            "network": "eth",
-            "shortcut": "SMT",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:SNC": {
             "address": "0xF4134146AF2d511Dd5EA8cDB1C4AC88C57D60404",
             "links": {
@@ -10951,24 +10570,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:SS": {
-            "address": "0xbbFF862d906E348E9946Bfb2132ecB157Da3D4b4",
-            "links": {
-                "Github": "https://github.com/Sharders",
-                "Homepage": "https://sharder.org"
-            },
-            "marketcap_usd": 6190295,
-            "name": "Sharder",
-            "network": "eth",
-            "shortcut": "SS",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:SSH": {
             "address": "0x6e2050CBFB3eD8A4d39b64cC9f47E711a03a5a89",
             "links": {
@@ -11697,24 +11298,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:UMKA": {
-            "address": "0x8e5afc69f6227A3ad75eD346c8723Bc62ce97123",
-            "links": {
-                "Github": "https://github.com/UMKAman",
-                "Homepage": "https://umka.city"
-            },
-            "marketcap_usd": 0,
-            "name": "UMKA",
-            "network": "eth",
-            "shortcut": "UMKA",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:UQC": {
             "address": "0xD01DB73E047855Efb414e6202098C4Be4Cd2423B",
             "links": {
@@ -11955,24 +11538,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:VIBEX": {
-            "address": "0xe8Ff5C9c75dEb346acAc493C463C8950Be03Dfba",
-            "links": {
-                "Github": "https://github.com/amack2u/VibeHub",
-                "Homepage": "http://vibehub.io"
-            },
-            "marketcap_usd": 0,
-            "name": "VIBEX",
-            "network": "eth",
-            "shortcut": "VIBEX",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:VIEW": {
             "address": "0xF03f8D65BaFA598611C3495124093c56e8F638f0",
             "links": {
@@ -12033,7 +11598,7 @@
                 "Homepage": "https://vetri.global/"
             },
             "marketcap_usd": 0,
-            "name": "VLD",
+            "name": "VETRI",
             "network": "eth",
             "shortcut": "VLD",
             "t1_enabled": "yes",
@@ -12218,24 +11783,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:WHO": {
-            "address": "0xe200641890772FCe8eE6EDc5354cCEa30ac92F49",
-            "links": {
-                "Github": "https://github.com/chrisbsd/whohas",
-                "Homepage": "https://whohas.io"
-            },
-            "marketcap_usd": 0,
-            "name": "WhoHas",
-            "network": "eth",
-            "shortcut": "WHO",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:WIC": {
             "address": "0x62CD07D414Ec50B68C7EcAa863a23d344f2d062f",
             "links": {
@@ -12289,23 +11836,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:eth:WOLK": {
-            "address": "0x728781E75735dc0962Df3a51d7Ef47E798A7107E",
-            "links": {
-                "Homepage": "https://www.wolk.com"
-            },
-            "marketcap_usd": 0,
-            "name": "Wolk Token",
-            "network": "eth",
-            "shortcut": "WOLK",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:eth:WORK": {
             "address": "0xD18e454D844eb0009D32E07A0Cde89E18d64CFb4",
             "links": {
@@ -12741,7 +12271,6 @@
         },
         "erc20:eth:YUPIE": {
             "address": "0x0F33bb20a282A7649C7B3AFf644F084a9348e933",
-            "hidden": 1,
             "links": {
                 "Github": "https://github.com/crowdholdingico/YupieSmartContract",
                 "Homepage": "https://www.crowdholding.com"
@@ -13037,22 +12566,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:kov:GUP": {
-            "address": "0x3C67f7D4decF7795225f51b54134F81137385f83",
-            "hidden": 1,
-            "links": {},
-            "marketcap_usd": 0,
-            "name": "GUP",
-            "network": "kov",
-            "shortcut": "GUP",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:rin:AETH": {
             "address": "0x398A7A69f3c59181A1ffe34bed11DCb5DF863A8a",
             "links": {
@@ -13106,41 +12619,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:rin:KC": {
-            "address": "0x275A5B346599b56917e7B1C9de019DCf9EaD861a",
-            "links": {
-                "Homepage": "https://baseblock.io/"
-            },
-            "marketcap_usd": 0,
-            "name": "Karma Token",
-            "network": "rin",
-            "shortcut": "KC",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
-        "erc20:rin:NONE": {
-            "address": "0x6475A7FA6Ed2D5180F0e0a07c2d951D12C0EDB91",
-            "hidden": 1,
-            "links": {
-                "Github": "https://github.com/walleth/contracts/tree/master/NoneToken"
-            },
-            "marketcap_usd": 0,
-            "name": "None",
-            "network": "rin",
-            "shortcut": "NONE",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:rin:PPD": {
             "address": "0x12fE174C097F6B3e876B3b060C9061F4B9dEBB80",
             "hidden": 1,
@@ -13159,23 +12637,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:rin:RDN": {
-            "address": "0x3615757011112560521536258c1E7325Ae3b48AE",
-            "links": {
-                "Homepage": "https://github.com/gnosis/dx-examples-liquidity-bots"
-            },
-            "marketcap_usd": 0,
-            "name": "Raiden",
-            "network": "rin",
-            "shortcut": "RDN",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:rin:WALL": {
             "address": "0x0A057a87CE9C56D7e336B417c79cf30E8d27860B",
             "links": {
@@ -13210,24 +12671,6 @@
                 "MyEtherWallet": "https://www.myetherwallet.com"
             }
         },
-        "erc20:rop:NONE": {
-            "address": "0xFD5a69A1309595FF5121553F52C8A5B2B1B31031",
-            "hidden": 1,
-            "links": {
-                "Github": "https://github.com/walleth/contracts/tree/master/NoneToken"
-            },
-            "marketcap_usd": 0,
-            "name": "None",
-            "network": "rop",
-            "shortcut": "NONE",
-            "t1_enabled": "yes",
-            "t2_enabled": "yes",
-            "type": "erc20",
-            "wallet": {
-                "MyCrypto": "https://mycrypto.com",
-                "MyEtherWallet": "https://www.myetherwallet.com"
-            }
-        },
         "erc20:ubq:BEER": {
             "address": "0xFF3bF057ADF3b0E015b6465331a6236e55688274",
             "hidden": 1,
@@ -13398,11 +12841,11 @@
         }
     },
     "info": {
-        "marketcap_usd": 219948273618,
-        "t1_coins": 690,
-        "t2_coins": 689,
-        "total_marketcap_usd": 283970152150,
-        "updated_at": 1532098768,
-        "updated_at_readable": "Fri Jul 20 16:59:28 2018"
+        "marketcap_usd": 219093401682,
+        "t1_coins": 700,
+        "t2_coins": 696,
+        "total_marketcap_usd": 284131879229,
+        "updated_at": 1532099100,
+        "updated_at_readable": "Fri Jul 20 17:05:00 2018"
     }
 }
\ No newline at end of file
diff --git a/tools/coin_defs.py b/tools/coin_defs.py
new file mode 100755
index 0000000000..0f320f430c
--- /dev/null
+++ b/tools/coin_defs.py
@@ -0,0 +1,404 @@
+#!/usr/bin/env python3
+from binascii import unhexlify
+from collections import defaultdict, OrderedDict
+import re
+import os
+import json
+import glob
+import logging
+
+try:
+    import requests
+except ImportError:
+    requests = None
+
+log = logging.getLogger(__name__)
+
+DEFS_DIR = os.path.abspath(
+    os.environ.get("DEFS_DIR") or os.path.join(os.path.dirname(__file__), "..", "defs")
+)
+
+
+def load_json(*path):
+    if len(path) == 1 and path[0].startswith("/"):
+        filename = path[0]
+    else:
+        filename = os.path.join(DEFS_DIR, *path)
+
+    with open(filename) as f:
+        return json.load(f, object_pairs_hook=OrderedDict)
+
+
+# ====== coin validation ======
+
+
+def check_type(val, types, nullable=False, empty=False, regex=None, choice=None):
+    # check nullable
+    if val is None:
+        if nullable:
+            return
+        else:
+            raise ValueError("Missing required value")
+
+    # check type
+    if not isinstance(val, types):
+        raise TypeError("Wrong type (expected: {})".format(types))
+
+    # check empty
+    if isinstance(val, (list, dict)) and not empty and not val:
+        raise ValueError("Empty collection")
+
+    # check regex
+    if regex is not None:
+        if types is not str:
+            raise TypeError("Wrong type for regex check")
+        if not re.search(regex, val):
+            raise ValueError("Value does not match regex {}".format(regex))
+
+    # check choice
+    if choice is not None and val not in choice:
+        raise ValueError("Value not allowed, use one of: {}".format(", ".join(choice)))
+
+
+def check_key(key, types, **kwargs):
+    def do_check(coin):
+        if not key in coin:
+            raise KeyError("{}: Missing key".format(key))
+        try:
+            check_type(coin[key], types, **kwargs)
+        except Exception as e:
+            raise ValueError("{}: {}".format(key, e)) from e
+
+    return do_check
+
+
+COIN_CHECKS = [
+    check_key("coin_name", str, regex=r"^[A-Z]"),
+    check_key("coin_shortcut", str, regex=r"^t?[A-Z]{3,}$"),
+    check_key("coin_label", str, regex=r"^[A-Z]"),
+    check_key("website", str, regex=r"^http.*[^/]$"),
+    check_key("github", str, regex=r"^https://github.com/.*[^/]$"),
+    check_key("maintainer", str),
+    check_key(
+        "curve_name", str, choice=["secp256k1", "secp256k1_decred", "secp256k1_groestl"]
+    ),
+    check_key("address_type", int),
+    check_key("address_type_p2sh", int),
+    check_key("maxfee_kb", int),
+    check_key("minfee_kb", int),
+    check_key("hash_genesis_block", str, regex=r"^[0-9a-f]{64}$"),
+    check_key("xprv_magic", int),
+    check_key("xpub_magic", int),
+    check_key("xpub_magic_segwit_p2sh", int, nullable=True),
+    check_key("xpub_magic_segwit_native", int, nullable=True),
+    check_key("slip44", int),
+    check_key("segwit", bool),
+    check_key("decred", bool),
+    check_key("fork_id", int, nullable=True),
+    check_key("force_bip143", bool),
+    check_key("bip115", bool),
+    check_key("version_group_id", int, nullable=True),
+    check_key("default_fee_b", dict),
+    check_key("dust_limit", int),
+    check_key("blocktime_seconds", int),
+    check_key("signed_message_header", str),
+    check_key("address_prefix", str, regex=r":$"),
+    check_key("min_address_length", int),
+    check_key("max_address_length", int),
+    check_key("bech32_prefix", str, nullable=True),
+    check_key("cashaddr_prefix", str, nullable=True),
+    check_key("bitcore", list, empty=True),
+    check_key("blockbook", list, empty=True),
+]
+
+
+def validate_coin(coin):
+    errors = []
+    for check in COIN_CHECKS:
+        try:
+            check(coin)
+        except Exception as e:
+            errors.append(str(e))
+
+    magics = [
+        coin[k]
+        for k in (
+            "xprv_magic",
+            "xpub_magic",
+            "xpub_magic_segwit_p2sh",
+            "xpub_magic_segwit_native",
+        )
+        if coin[k] is not None
+    ]
+    # each of those must be unique
+    # therefore length of list == length of set of unique values
+    if len(magics) != len(set(magics)):
+        errors.append("XPUB/XPRV magic numbers must be unique")
+
+    if coin["address_type"] == coin["address_type_p2sh"]:
+        errors.append("address_type must be distinct from address_type_p2sh")
+
+    if not coin["maxfee_kb"] >= coin["minfee_kb"]:
+        errors.append("max fee must not be smaller than min fee")
+
+    if not coin["max_address_length"] >= coin["min_address_length"]:
+        errors.append("max address length must not be smaller than min address length")
+
+    for bc in coin["bitcore"] + coin["blockbook"]:
+        if bc.endswith("/"):
+            errors.append("make sure URLs don't end with '/'")
+
+    return errors
+
+
+# ======= Coin json loaders =======
+
+
+def get_coins():
+    coins = []
+    for filename in glob.glob(os.path.join(DEFS_DIR, "coins", "*.json")):
+        coin = load_json(filename)
+        coin.update(
+            name=coin["coin_name"],
+            shortcut=coin["coin_shortcut"],
+            key="btc:{}".format(coin["coin_shortcut"]),
+        )
+        coins.append(coin)
+
+    return coins
+
+
+def get_ethereum_networks():
+    networks = load_json("ethereum", "networks.json")
+    for network in networks:
+        network.update(key="eth:{}".format(network["shortcut"]))
+    return networks
+
+
+def get_erc20_tokens():
+    networks = get_ethereum_networks()
+    tokens = []
+    for network in networks:
+        if network["name"].startswith("Ethereum Testnet "):
+            idx = len("Ethereum Testnet ")
+            chain = network["name"][idx : idx + 3]
+        else:
+            chain = network["shortcut"]
+        chain = chain.lower()
+        if not chain:
+            continue
+
+        chain_path = os.path.join(DEFS_DIR, "ethereum", "tokens", "tokens", chain)
+        for filename in glob.glob(os.path.join(chain_path, "*.json")):
+            token = load_json(filename)
+            token.update(
+                chain=chain,
+                chain_id=network["chain_id"],
+                address_bytes=unhexlify(token["address"][2:]),
+                shortcut=token["symbol"],
+                key="erc20:{}:{}".format(chain, token["symbol"]),
+            )
+            tokens.append(token)
+
+    return tokens
+
+
+def get_nem_mosaics():
+    mosaics = load_json("nem", "nem_mosaics.json")
+    for mosaic in mosaics:
+        shortcut = mosaic["ticker"].strip()
+        mosaic.update(shortcut=shortcut, key="nem:{}".format(shortcut))
+    return mosaics
+
+
+def get_others():
+    others = load_json("others.json")
+    for other in others:
+        other.update(key="network:{}".format(other["shortcut"]))
+    return others
+
+
+# ====== support info ======
+
+RELEASES_URL = "https://wallet.trezor.io/data/firmware/{}/releases.json"
+ETHEREUM_TOKENS = {
+    "1": "https://raw.githubusercontent.com/trezor/trezor-mcu/v{}/firmware/ethereum_tokens.c",
+    "2": "https://raw.githubusercontent.com/trezor/trezor-core/v{}/src/apps/ethereum/tokens.py",
+}
+
+TOKEN_MATCH = {
+    "1": re.compile(r'\{.*" ([^"]+)".*\},'),
+    "2": re.compile(r'\(.*["\']([^"\']+)["\'].*\),'),
+}
+
+
+def latest_releases():
+    if not requests:
+        raise RuntimeError("requests library is required for getting release info")
+
+    latest = {}
+    for v in ("1", "2"):
+        releases = requests.get(RELEASES_URL.format(v)).json()
+        latest[v] = max(tuple(r["version"]) for r in releases)
+    return latest
+
+
+def support_info_erc20(coins, versions):
+    supported_tokens = {}
+    for trezor, version in versions.items():
+        tokens = set()
+        version_str = ".".join(map(str, version))
+
+        token_file = requests.get(ETHEREUM_TOKENS[trezor].format(version_str)).text
+        token_match = TOKEN_MATCH[trezor]
+
+        for line in token_file.split("\n"):
+            m = token_match.search(line)
+            if m:
+                tokens.add(m.group(1))
+
+        supported_tokens[trezor] = tokens
+
+    support = {}
+    for coin in coins:
+        key = coin["key"]
+        if not key.startswith("erc20:"):
+            continue
+
+        support[key] = dict(
+            trezor1="yes" if coin["shortcut"] in supported_tokens["1"] else "soon",
+            trezor2="yes" if coin["shortcut"] in supported_tokens["2"] else "soon",
+        )
+
+    return support
+
+
+def support_info(coins, erc20_versions=None):
+    support_data = load_json("support.json")
+    support = {}
+    for coin in coins:
+        key = coin["key"]
+        typ = key.split(":", maxsplit=1)[0]
+        if key in support_data:
+            support[key] = support_data[key]
+
+        elif typ in ("nem", "eth"):
+            support[key] = dict(trezor1="yes", trezor2="yes")
+
+        elif typ == "erc20":
+            # you must call a separate function to get that
+            continue
+
+        else:
+            log.warning("support info missing for {}".format(key))
+            support[key] = {}
+
+    if erc20_versions:
+        erc20 = support_info_erc20(coins, erc20_versions)
+        erc20.update(support)
+        return erc20
+    else:
+        return support
+
+
+# ====== data cleanup functions ======
+
+
+def find_address_collisions(coins):
+    slip44 = defaultdict(list)
+    at_p2pkh = defaultdict(list)
+    at_p2sh = defaultdict(list)
+
+    for name, coin in coins.items():
+        s = coin["slip44"]
+        # ignore m/1 testnets
+        if not (name.endswith("Testnet") and s == 1):
+            slip44[s].append(s)
+
+        # skip address types on cashaddr currencies
+        if coin["cashaddr_prefix"]:
+            continue
+
+        at_p2pkh[coin["address_type"]].append(name)
+        at_p2sh[coin["address_type_p2sh"]].append(name)
+
+    def prune(d):
+        ret = d.copy()
+        for key in d.keys():
+            if len(d[key]) < 2:
+                del ret[key]
+        return ret
+
+    return dict(
+        slip44=prune(slip44),
+        address_type=prune(at_p2pkh),
+        address_type_p2sh=prune(at_p2sh),
+    )
+
+
+def ensure_mandatory_values(coins):
+    for coin in coins:
+        if not all(coin.get(k) for k in ("name", "shortcut", "key")):
+            raise ValueError(coin)
+
+
+def filter_duplicate_shortcuts(coins):
+    dup_keys = set()
+    retained_coins = OrderedDict()
+
+    for coin in coins:
+        key = coin["shortcut"]
+        if key in dup_keys:
+            pass
+        elif key in retained_coins:
+            dup_keys.add(key)
+            del retained_coins[key]
+        else:
+            retained_coins[key] = coin
+
+    # modify original list
+    coins[:] = retained_coins.values()
+    # return duplicates
+    return dup_keys
+
+
+def _btc_sort_key(coin):
+    if coin["name"] in ("Bitcoin", "Testnet"):
+        return "000000" + coin["name"]
+    else:
+        return coin["name"]
+
+
+def get_all():
+    all_coins = dict(
+        btc=get_coins(),
+        eth=get_ethereum_networks(),
+        erc20=get_erc20_tokens(),
+        nem=get_nem_mosaics(),
+        other=get_others(),
+    )
+
+    for k, coins in all_coins.items():
+        if k == "btc":
+            coins.sort(key=_btc_sort_key)
+        else:
+            coins.sort(key=lambda c: c["key"].upper())
+
+        ensure_mandatory_values(coins)
+        if k != "eth":
+            dup_keys = filter_duplicate_shortcuts(coins)
+            if dup_keys:
+                log.warning(
+                    "{}: removing duplicate symbols: {}".format(k, ", ".join(dup_keys))
+                )
+
+    return all_coins
+
+
+def get_list():
+    all_coins = get_all()
+    return sum(all_coins.values(), [])
+
+
+def get_dict():
+    return {coin["key"]: coin for coin in get_list()}
diff --git a/tools/coins_details.py b/tools/coins_details.py
index 5438f3823e..c00111945a 100755
--- a/tools/coins_details.py
+++ b/tools/coins_details.py
@@ -2,360 +2,343 @@
 """Fetch information about coins and tokens supported by Trezor and update it in coins_details.json."""
 import time
 import json
+import logging
 import requests
-import ethereum_tokens_gen
-import build_coins
-from distutils.version import LooseVersion
+import coin_defs
 
-T1_LATEST='1.6.2'
-T2_LATEST='2.0.7'
+OPTIONAL_KEYS = ("links", "notes", "wallet")
+OVERRIDES = coin_defs.load_json("coins_details.override.json")
+
+VERSIONS = coin_defs.latest_releases()
 
 COINS = {}
 
+log = logging.getLogger(__name__)
+
+
 def coinmarketcap_init():
     global COINS
 
     try:
-        COINS = json.load(open('coinmarketcap.json', 'r'))
+        marketcap_json = json.load(open("coinmarketcap.json", "r"))
     except FileNotFoundError:
         pass
     else:
-        if COINS["1"]["last_updated"] > time.time() - 3600:
-            print("Using local cache of coinmarketcap")
-            return
+        pass
+        # if COINS["1"]["last_updated"] > time.time() - 3600:
+        #     print("Using local cache of coinmarketcap")
+        #     return
+
+    for coin in marketcap_json.values():
+        slug = coin["website_slug"]
+        market_cap = coin["quotes"]["USD"]["market_cap"]
+        if market_cap is not None:
+            COINS[slug] = int(float(market_cap))
+
+    return
 
     print("Updating coins from coinmarketcap")
     total = None
     COINS = {}
 
     while total is None or len(COINS) < total:
-        url = 'https://api.coinmarketcap.com/v2/ticker/?start=%d&convert=USD&limit=100' % (len(COINS))
+        url = (
+            "https://api.coinmarketcap.com/v2/ticker/?start=%d&convert=USD&limit=100"
+            % (len(COINS) + 1)
+        )
         data = requests.get(url).json()
-        COINS.update(data['data'])
+        COINS.update(data["data"])
         if total is None:
-            total = data['metadata']['num_cryptocurrencies']
+            total = data["metadata"]["num_cryptocurrencies"]
 
         print("Fetched %d of %d coins" % (len(COINS), total))
         time.sleep(1)
 
-    json.dump(COINS, open('coinmarketcap.json', 'w'), sort_keys=True, indent=4)
+    json.dump(COINS, open("coinmarketcap.json", "w"), sort_keys=True, indent=4)
 
 
-def coinmarketcap_info(shortcut):
-    global COINS
-    shortcut = shortcut.replace(' ', '-').lower()
+def marketcap(coin):
+    cap = None
 
-    for _id in COINS:
-        coin = COINS[_id]
-        # print(shortcut, coin['website_slug'])
-        if shortcut == coin['website_slug']:
-            # print(coin)
-            return coin
+    if "coinmarketcap_alias" in coin:
+        cap = COINS.get(coin["coinmarketcap_alias"])
+    
+    if not cap:
+        slug = coin["name"].replace(" ", "-").lower()
+        cap = COINS.get(slug)
+    
+    if not cap:
+        cap = COINS.get(coin["shortcut"].lower())
+    
+    return cap
 
 
-def update_marketcap(obj, *shortcuts):
-    for sym in shortcuts:
-        try:
-            obj['marketcap_usd'] = int(float(coinmarketcap_info(sym)['quotes']['USD']['market_cap']))
-            return
-        except:
-            pass
-        # print("Marketcap info not found for", shortcut)
+def update_marketcap(coins):
+    for coin in coins.values():
+        cap = marketcap(coin)
+        if cap:
+            coin["marketcap_usd"] = cap
 
 
 def coinmarketcap_global():
-    url = 'https://api.coinmarketcap.com/v2/global'
+    url = "https://api.coinmarketcap.com/v2/global"
     ret = requests.get(url)
     data = ret.json()
     return data
 
 
-def set_default(obj, key, default_value):
-    obj[key] = obj.setdefault(key, default_value)
-
-
 def update_info(details):
-    details['info']['updated_at'] = int(time.time())
-    details['info']['updated_at_readable'] = time.asctime()
+    details["info"]["updated_at"] = int(time.time())
+    details["info"]["updated_at_readable"] = time.asctime()
 
-    details['info']['t1_coins'] = len([True for _, c in details['coins'].items() if c.get('t1_enabled') == 'yes' and not c.get('hidden', False)])
-    details['info']['t2_coins'] = len([True for _, c in details['coins'].items() if c.get('t2_enabled') == 'yes' and not c.get('hidden', False)])
+    details["info"]["t1_coins"] = len(
+        [
+            True
+            for _, c in details["coins"].items()
+            if c.get("t1_enabled") == "yes" and not c.get("hidden", False)
+        ]
+    )
+    details["info"]["t2_coins"] = len(
+        [
+            True
+            for _, c in details["coins"].items()
+            if c.get("t2_enabled") == "yes" and not c.get("hidden", False)
+        ]
+    )
 
     try:
-        details['info']['total_marketcap_usd'] = int(coinmarketcap_global()['data']['quotes']['USD']['total_market_cap'])
+        details["info"]["total_marketcap_usd"] = int(
+            coinmarketcap_global()["data"]["quotes"]["USD"]["total_market_cap"]
+        )
     except:
         pass
 
     marketcap = 0
-    for k, c in details['coins'].items():
-        if c['t1_enabled'] == 'yes' or c['t2_enabled'] == 'yes':
-            marketcap += details['coins'][k].setdefault('marketcap_usd', 0)
-    details['info']['marketcap_usd'] = marketcap
+    for k, c in details["coins"].items():
+        if c["t1_enabled"] == "yes" or c["t2_enabled"] == "yes":
+            marketcap += details["coins"][k].setdefault("marketcap_usd", 0)
+    details["info"]["marketcap_usd"] = marketcap
 
 
 def check_unsupported(details, prefix, supported):
-    for k in details['coins'].keys():
+    for k in details["coins"].keys():
         if not k.startswith(prefix):
             continue
         if k not in supported:
             print("%s not supported by Trezor? (Possible manual entry)" % k)
 
 
-def update_coins(details):
-    (coins, _) = build_coins.process(None)
-    firmware = json.load(open('../defs/support.json', 'r'))
+def _is_supported(support, trezor_version):
+    version = VERSIONS[str(trezor_version)]
+    nominal = support.get("trezor" + str(trezor_version))
+    if nominal is None:
+        return "no"
+    elif isinstance(nominal, bool):
+        return "yes" if nominal else "no"
 
-    supported = []
-    for key, coin in coins.items():
-
-        t1_enabled = 'no'
-        if key in firmware['trezor1']:
-            if LooseVersion(firmware['trezor1'][key]) <= LooseVersion(T1_LATEST):
-                t1_enabled = 'yes'
-            else:
-                t1_enabled = 'soon'
-
-        t2_enabled = 'no'
-        if key in firmware['trezor2']:
-            if LooseVersion(firmware['trezor2'][key]) <= LooseVersion(T2_LATEST):
-                t2_enabled = 'yes'
-            else:
-                t2_enabled = 'soon'
-
-        # print("Updating", coin['coin_label'], coin['coin_shortcut'])
-        key = "coin:%s" % coin['coin_shortcut']
-        supported.append(key)
-        out = details['coins'].setdefault(key, {})
-        out['type'] = 'coin'
-        out['t1_enabled'] = t1_enabled
-        out['t2_enabled'] = t2_enabled
-
-        set_default(out, 'shortcut', coin['coin_shortcut'])
-        set_default(out, 'name', coin['coin_label'])
-        set_default(out, 'links', {})
-        set_default(out['links'], 'Homepage', coin['website'])
-        set_default(out['links'], 'Github', coin['github'])
-        set_default(out, 'wallet', {})
-        update_marketcap(out, coin.get('coinmarketcap_alias', coin['coin_label']))
-
-    check_unsupported(details, 'coin:', supported)
+    try:
+        nominal_version = tuple(map(int, nominal.split(".")))
+        return "yes" if nominal_version <= version else "soon"
+    except ValueError:
+        return nominal
 
 
-def update_erc20(details):
-    networks = [x[0] for x in ethereum_tokens_gen.networks]
+def _webwallet_support(coin, support):
+    """Check the "webwallet" support property.
+    If set, check that at least one of the backends run on trezor.io.
+    If yes, assume we support the coin in our wallet.
+    Otherwise it's probably working with a custom backend, which means don't
+    link to our wallet.
+    """
+    if not support.get("webwallet"):
+        return False
+    return any(".trezor.io" in url for url in coin["blockbook"] + coin["bitcore"])
 
-    LATEST_T1 = 'https://raw.githubusercontent.com/trezor/trezor-mcu/v%s/firmware/ethereum_tokens.c' % T1_LATEST
-    LATEST_T2 = 'https://raw.githubusercontent.com/trezor/trezor-core/v%s/src/apps/ethereum/tokens.py' % T2_LATEST
 
-    tokens = ethereum_tokens_gen.get_tokens()
-    tokens_t1 = requests.get(LATEST_T1).text
-    tokens_t2 = requests.get(LATEST_T2).text
+def update_coins(coins, support_info):
+    res = {}
+    for coin in coins:
+        key = coin["key"]
+        support = support_info[key]
+        details = dict(
+            type="coin",
+            shortcut=coin["shortcut"],
+            name=coin["coin_label"],
+            links=dict(Homepage=coin["website"], Github=coin["github"]),
+            t1_enabled=_is_supported(support, 1),
+            t2_enabled=_is_supported(support, 2),
+            wallet={},
+        )
+        if _webwallet_support(coin, support):
+            details["wallet"]["Trezor"] = "https://wallet.trezor.io"
+        if support.get("other"):
+            details["wallet"].update(support["other"])
 
-    supported = []
-    for t in tokens:
-        # print('Updating', t['symbol'])
+        # XXX get rid of this in favor of res[key]
+        res["coin:{}".format(coin["shortcut"])] = details
 
-        if t['chain'] not in networks:
-            print('Skipping, %s is disabled' % t['chain'])
-            continue
+    return res
 
-        key = "erc20:%s:%s" % (t['chain'], t['symbol'])
-        supported.append(key)
-        out = details['coins'].setdefault(key, {})
-        out['type'] = 'erc20'
-        out['network'] = t['chain']
-        out['address'] = t['address']
 
-        set_default(out, 'shortcut', t['symbol'])
-        set_default(out, 'name', t['name'])
-        set_default(out, 'links', {})
-        set_default(out, 'wallet', {})
+def update_erc20(coins, support_info):
+    # TODO skip disabled networks?
+    res = {}
+    for coin in coins:
+        key = coin["key"]
+        support = support_info[key]
+        details = dict(
+            type="erc20",
+            network=coin["chain"],
+            address=coin["address"],
+            shortcut=coin["shortcut"],
+            name=coin["name"],
+            links={},
+            wallet=dict(
+                MyCrypto="https://mycrypto.com",
+                MyEtherWallet="https://www.myetherwallet.com",
+            ),
+            t1_enabled=support["trezor1"],
+            t2_enabled=support["trezor2"],
+        )
+        if coin.get("website"):
+            details["links"]["Homepage"] = coin["website"]
+        if coin.get("social", {}).get("github"):
+            details["links"]["Github"] = coin["social"]["github"]
 
-        if "\" %s\"" % t['symbol'] in tokens_t1:
-            out['t1_enabled'] = 'yes'
+        res[key] = details
+
+    return res
+
+
+def update_simple(coins, support_info, type):
+    res = {}
+    for coin in coins:
+        key = coin["key"]
+        support = support_info[key]
+
+        # XXX drop newkey
+        if type == "mosaic":
+            newkey = "mosaic:{}".format(coin["shortcut"])
         else:
-            out['t1_enabled'] = 'soon'
+            newkey = "coin2:{}".format(coin["shortcut"])
 
-        if "'%s'" % t['symbol'] in tokens_t2:
-            out['t2_enabled'] = 'yes'
-        else:
-            out['t2_enabled'] = 'soon'
+        details = dict(
+            name=coin["name"],
+            shortcut=coin["shortcut"],
+            type=type,
+            t1_enabled=_is_supported(support, 1),
+            t2_enabled=_is_supported(support, 2),
+        )
+        for key in OPTIONAL_KEYS:
+            if key in coin:
+                details[key] = coin[key]
 
-        out['wallet']['MyCrypto'] = 'https://mycrypto.com'
-        out['wallet']['MyEtherWallet'] = 'https://www.myetherwallet.com'
+        res[newkey] = details
 
-        if t.get('website'):
-            out['links']['Homepage'] = t['website']
-        if t.get('social', {}).get('github', None):
-            out['links']['Github'] = t['social']['github']
-
-        update_marketcap(out, out.get('coinmarketcap_alias'), t['name'], t['symbol'])
-
-    check_unsupported(details, 'erc20:', supported)
+    return res
 
 
-def update_ethereum(details):
-    out = details['coins'].setdefault('coin2:ETH', {})
-    out['type'] = 'coin'
-    set_default(out, 'shortcut', 'ETH')
-    set_default(out, 'name', 'Ethereum')
-    set_default(out, 't1_enabled', 'yes')
-    set_default(out, 't2_enabled', 'yes')
-    update_marketcap(out, 'ethereum')
-
-    out = details['coins'].setdefault('coin2:ETC', {})
-    out['type'] = 'coin'
-    set_default(out, 'shortcut', 'ETC')
-    set_default(out, 'name', 'Ethereum Classic')
-    set_default(out, 't1_enabled', 'yes')
-    set_default(out, 't2_enabled', 'yes')
-    update_marketcap(out, 'ethereum-classic')
-
-    out = details['coins'].setdefault('coin2:RSK', {})
-    out['type'] = 'coin'
-    set_default(out, 'shortcut', 'RSK')
-    set_default(out, 'name', 'Rootstock')
-    set_default(out, 't1_enabled', 'yes')
-    set_default(out, 't2_enabled', 'yes')
-    update_marketcap(out, 'rootstock')
-
-    out = details['coins'].setdefault('coin2:EXP', {})
-    out['type'] = 'coin'
-    set_default(out, 'shortcut', 'EXP')
-    set_default(out, 'name', 'Expanse')
-    set_default(out, 't1_enabled', 'yes')
-    set_default(out, 't2_enabled', 'yes')
-    update_marketcap(out, 'expanse')
-
-    out = details['coins'].setdefault('coin2:UBQ', {})
-    out['type'] = 'coin'
-    set_default(out, 'shortcut', 'UBQ')
-    set_default(out, 'name', 'Ubiq')
-    set_default(out, 't1_enabled', 'yes')
-    set_default(out, 't2_enabled', 'yes')
-    update_marketcap(out, 'ubiq')
-
-    out = details['coins'].setdefault('coin2:ELLA', {})
-    out['type'] = 'coin'
-    set_default(out, 'shortcut', 'ELLA')
-    set_default(out, 'name', 'Ellaism')
-    set_default(out, 't1_enabled', 'yes')
-    set_default(out, 't2_enabled', 'yes')
-    update_marketcap(out, 'ellaism')
-
-    out = details['coins'].setdefault('coin2:EGEM', {})
-    out['type'] = 'coin'
-    set_default(out, 'shortcut', 'EGEM')
-    set_default(out, 'name', 'EtherGem')
-    set_default(out, 't1_enabled', 'yes')
-    set_default(out, 't2_enabled', 'yes')
-    update_marketcap(out, 'egem')
-
-    out = details['coins'].setdefault('coin2:ETSC', {})
-    out['type'] = 'coin'
-    set_default(out, 'shortcut', 'ETSC')
-    set_default(out, 'name', 'Ethereum Social')
-    set_default(out, 't1_enabled', 'yes')
-    set_default(out, 't2_enabled', 'yes')
-    update_marketcap(out, 'etsc')
-
-    out = details['coins'].setdefault('coin2:EOSC', {})
-    out['type'] = 'coin'
-    set_default(out, 'shortcut', 'EOSC')
-    set_default(out, 'name', 'EOS Classic')
-    set_default(out, 't1_enabled', 'yes')
-    set_default(out, 't2_enabled', 'yes')
-    update_marketcap(out, 'eosc')
-
-    out = details['coins'].setdefault('coin2:ADA', {})
-    out['type'] = 'coin'
-    set_default(out, 'shortcut', 'ADA')
-    set_default(out, 'name', 'Cardano')
-    set_default(out, 't1_enabled', 'no')
-    set_default(out, 't2_enabled', 'soon')
-    update_marketcap(out, 'cardano')
-
-    out = details['coins'].setdefault('coin2:XTZ', {})
-    out['type'] = 'coin'
-    set_default(out, 'shortcut', 'XTZ')
-    set_default(out, 'name', 'Tezos')
-    set_default(out, 't1_enabled', 'no')
-    set_default(out, 't2_enabled', 'soon')
-    update_marketcap(out, 'tezos')
-
-
-def update_mosaics(details):
-    d = json.load(open('../defs/nem/nem_mosaics.json'))
-    supported = []
-    for mosaic in d:
-        # print('Updating', mosaic['name'], mosaic['ticker'])
-
-        key = "mosaic:%s" % mosaic['ticker'].strip()
-        supported.append(key)
-        out = details['coins'].setdefault(key, {})
-        out['type'] = 'mosaic'
-        set_default(out, 'shortcut', mosaic['ticker'].strip())
-        set_default(out, 'name', mosaic['name'])
-        set_default(out, 't1_enabled', 'yes')
-        set_default(out, 't2_enabled', 'yes')
-
-        update_marketcap(out, out.get('coinmarketcap_alias', out['name']))
-
-    check_unsupported(details, 'mosaic:', supported)
+def update_ethereum_networks(coins, support_info):
+    res = update_simple(coins, support_info, "coin")
+    for coin in coins:
+        newkey = "coin2:{}".format(coin["shortcut"])
+        res[newkey]["wallet"] = dict(
+            MyCrypto="https://mycrypto.com",
+            MyEtherWallet="https://www.myetherwallet.com",
+        )
+        res[newkey]["links"] = dict(Homepage=coin.get("url"))
+    return res
 
 
 def check_missing_details(details):
-    for k in details['coins'].keys():
-        coin = details['coins'][k]
+    for k in details["coins"].keys():
+        coin = details["coins"][k]
         hide = False
 
-        if 'links' not in coin:
+        if "links" not in coin:
             print("%s: Missing links" % k)
             hide = True
-        if 'Homepage' not in coin.get('links', {}):
+        if "Homepage" not in coin.get("links", {}):
             print("%s: Missing homepage" % k)
             hide = True
-        if coin['t1_enabled'] not in ('yes', 'no', 'planned', 'soon'):
+        if coin["t1_enabled"] not in ("yes", "no", "planned", "soon"):
             print("%s: Unknown t1_enabled" % k)
             hide = True
-        if coin['t2_enabled'] not in ('yes', 'no', 'planned', 'soon'):
+        if coin["t2_enabled"] not in ("yes", "no", "planned", "soon"):
             print("%s: Unknown t2_enabled" % k)
             hide = True
-        if 'Trezor' in coin.get('wallet', {}) and coin['wallet']['Trezor'] != 'https://wallet.trezor.io':
+        if (
+            "Trezor" in coin.get("wallet", {})
+            and coin["wallet"]["Trezor"] != "https://wallet.trezor.io"
+        ):
             print("%s: Strange URL for Trezor Wallet" % k)
             hide = True
 
-        if len(coin.get('wallet', {})) == 0:
+        if len(coin.get("wallet", {})) == 0:
             print("%s: Missing wallet" % k)
 
+        if "Testnet" in coin["name"]:
+            print("%s: Hiding testnet" % k)
+            hide = True
+
         if hide:
-            if coin.get('hidden') != 1:
+            if coin.get("hidden") != 1:
                 print("%s: HIDING COIN!" % k)
 
             # If any of important detail is missing, hide coin from list
-            coin['hidden'] = 1
+            coin["hidden"] = 1
 
-        if not hide and coin.get('hidden'):
+        if not hide and coin.get("hidden"):
             print("%s: Details are OK, but coin is still hidden" % k)
 
-    for k in details['coins'].keys():
-        if details['coins'][k].get('hidden') == 1:
+    for k in details["coins"].keys():
+        if details["coins"][k].get("hidden") == 1:
             print("%s: Coin is hidden" % k)
 
 
-if __name__ == '__main__':
-    try:
-        details = json.load(open('../defs/coins_details.json', 'r'))
-    except FileNotFoundError:
-        details = {'coins': {}, 'info': {}}
+def apply_overrides(coins):
+    for key, override in OVERRIDES.items():
+        if key not in coins:
+            log.warning("override without coin: {}".format(key))
+            continue
+
+        def recursive_update(orig, new):
+            if isinstance(new, dict) and isinstance(orig, dict):
+                for k, v in new.items():
+                    orig[k] = recursive_update(orig.get(k), v)
+            else:
+                return new
+
+        coin = coins[key]
+        recursive_update(coin, override)
+
+
+if __name__ == "__main__":
+    # try:
+    #     details = json.load(open('../defs/coins_details.json', 'r'))
+    # except FileNotFoundError:
+    #     details = {'coins': {}, 'info': {}}
 
     coinmarketcap_init()
-    update_coins(details)
-    update_erc20(details)
-    update_ethereum(details)
-    update_mosaics(details)
+
+    defs = coin_defs.get_all()
+    all_coins = sum(defs.values(), [])
+    support_info = coin_defs.support_info(all_coins, erc20_versions=VERSIONS)
+
+    coins = {}
+    coins.update(update_coins(defs["btc"], support_info))
+    coins.update(update_erc20(defs["erc20"], support_info))
+    coins.update(update_ethereum_networks(defs["eth"], support_info))
+    coins.update(update_simple(defs["nem"], support_info, "mosaic"))
+    coins.update(update_simple(defs["other"], support_info, "coin"))
+
+    apply_overrides(coins)
+    update_marketcap(coins)
+
+    details = dict(coins=coins, info={})
     update_info(details)
     check_missing_details(details)
 
-    print(json.dumps(details['info'], sort_keys=True, indent=4))
-    json.dump(details, open('../defs/coins_details.json', 'w'), sort_keys=True, indent=4)
+    print(json.dumps(details["info"], sort_keys=True, indent=4))
+    json.dump(details, open("../defs/coins_details.json", "w"), sort_keys=True, indent=4)
+