fix: add genesis hash (#329)

src/constants.js

@@ -17,7 +17,7 @@ export const EthereumNetworkKeys = Object.freeze({
 
 // genesisHash is used as Network key for Substrate networks
 export const SubstrateNetworkKeys = Object.freeze({
-  KUSAMA: '456',
+  KUSAMA: '0x3fd7b9eb6a00376e5be61f01abb429ffb0b104be05eaff4d458da48fcd425baf', // https://polkascan.io/pre/kusama/block/0
   // POLKADOT: '123',
   // POLKADOT_TEST: 's42', // needs a dummy genesis different than any other id (Eth chain id included)
 });

src/util/decoders.spec.js

@@ -56,7 +56,7 @@ const SIGNER_PAYLOAD_TEST = {
   address: '5DTestUPts3kjeXSTMyerHihn1uwMfLj8vU8sqF7qYrFabHE',
   blockHash: '0xde8f69eeb5e065e18c6950ff708d7e551f68dc9bf59a07c52367c0280f805ec7',
   era: '0x0703',
-  genesisHash: '0xdcd1346701ca8396496e52aa2785b1748deb6db09551b72159dcb3e08991025b',
+  genesisHash: '0x3fd7b9eb6a00376e5be61f01abb429ffb0b104be05eaff4d458da48fcd425baf',
   method: '0x0500ffd7568e5f0a7eda67a82691ff379ac4bba4f9c9b859fe779b5d46363b61ad2db9e56c',
   nonce: '0x00001234',
   specVersion: 3,