Replace static BITCOINID with generated pegged_asset using standard issuance derivation

contrib/assets_tutorial/assets_tutorial.py

@@ -211,7 +211,7 @@ e1.dumpassetlabels()
 # You can also filter calls using specific asset hex or labels:
 e1.getwalletinfo("bitcoin")
 # bitcoin's hex asset type
-e1.getwalletinfo("09f663de96be771f50cab5ded00256ffe63773e2eaa9a604092951cc3d7c6621")
+e1.getwalletinfo("694d95345fcd292329b5fb4e465a48484c7e218f4d4f1f7a3bfea26dd2d8fc3d")
 
 # We can also issue our own assets, 1 asset and 1 reissuance token in this case
 issue = e1.issueasset(1, 1)

contrib/assets_tutorial/assets_tutorial.sh

@@ -144,7 +144,7 @@ e1-cli dumpassetlabels
 # You can also filter calls using specific asset hex or labels:
 e1-cli getwalletinfo bitcoin
 # bitcoin's hex asset type
-e1-cli getwalletinfo 09f663de96be771f50cab5ded00256ffe63773e2eaa9a604092951cc3d7c6621
+e1-cli getwalletinfo 694d95345fcd292329b5fb4e465a48484c7e218f4d4f1f7a3bfea26dd2d8fc3d
 
 # We can also issue our own assets, 1 asset and 1 reissuance token in this case
 ISSUE=$(e1-cli issueasset 1 1)

src/chainparams.cpp

@@ -5,6 +5,7 @@
 
 #include "chainparams.h"
 #include "consensus/merkle.h"
+#include "issuance.h"
 
 #include "tinyformat.h"
 #include "util.h"
@@ -18,9 +19,6 @@
 
 #include "chainparamsseeds.h"
 
-/** The sha256 of Bitcoin genesis block, for easy reference **/ 
-static const CAsset BITCOINID(uint256S("09f663de96be771f50cab5ded00256ffe63773e2eaa9a604092951cc3d7c6621"));
-
 // Safer for users if they load incorrect parameters via arguments.
 static std::vector<unsigned char> CommitToArguments(const Consensus::Params& params, const std::string& networkID, const CScript& signblockscript)
 {
@@ -100,8 +98,6 @@ public:
         consensus.BIP66Height = 363725; // 00000000000000000379eaa19dce8c9b722d46ae6a57c2f1a988119488b50931
         consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
 
-        consensus.pegged_asset = BITCOINID;
-
         // Peg-ins Bitcoin headers must have higher difficulty target than this field
         // This value must be sufficiently small to not preclude realistic parent
         // chain difficulty during network lifespan yet sufficiently large to
@@ -147,8 +143,14 @@ public:
         nPruneAfterHeight = 100000;
 
         parentGenesisBlockHash = uint256S("000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943");
+
+        // Generate pegged Bitcoin asset
+        uint256 entropy;
+        GenerateAssetEntropy(entropy, COutPoint() /* blank prevout to simulate coinbase */, parentGenesisBlockHash);
+        CalculateAsset(consensus.pegged_asset, entropy);
+
         CScript scriptDestination(CScript() << std::vector<unsigned char>(parentGenesisBlockHash.begin(), parentGenesisBlockHash.end()) << OP_WITHDRAWPROOFVERIFY);
-        genesis = CreateGenesisBlock(consensus, strNetworkID, scriptDestination, 1231006505, genesisChallengeScript, 1, MAX_MONEY, 100, BITCOINID);
+        genesis = CreateGenesisBlock(consensus, strNetworkID, scriptDestination, 1231006505, genesisChallengeScript, 1, MAX_MONEY, 100, consensus.pegged_asset);
         consensus.hashGenesisBlock = genesis.GetHash();
 
         scriptCoinbaseDestination = CScript() << ParseHex("0229536c4c83789f59c30b93eb40d4abbd99b8dcc99ba8bd748f29e33c1d279e3c") << OP_CHECKSIG;
@@ -249,12 +251,16 @@ public:
         nDefaultPort = 7042;
         nPruneAfterHeight = 1000;
 
-        consensus.pegged_asset = BITCOINID;
+        parentGenesisBlockHash = uint256S("0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206");
 
-        genesis = CreateGenesisBlock(consensus, strNetworkID, defaultRegtestScript, 1296688602, genesisChallengeScript, 1, MAX_MONEY, 100, BITCOINID);
+        // Generate pegged Bitcoin asset
+        uint256 entropy;
+        GenerateAssetEntropy(entropy, COutPoint() /* blank prevout to simulate coinbase */, parentGenesisBlockHash);
+        CalculateAsset(consensus.pegged_asset, entropy);
+
+        genesis = CreateGenesisBlock(consensus, strNetworkID, defaultRegtestScript, 1296688602, genesisChallengeScript, 1, MAX_MONEY, 100, consensus.pegged_asset);
         consensus.hashGenesisBlock = genesis.GetHash();
 
-        parentGenesisBlockHash = uint256S("0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206");
 
         scriptCoinbaseDestination = CScript(); // Allow any coinbase destination
 

src/init.cpp

@@ -460,7 +460,7 @@ std::string HelpMessage(HelpMessageMode mode)
         strUsage += HelpMessageOpt("-maxsigcachesize=<n>", strprintf("Limit size of signature cache to <n> MiB (default: %u)", DEFAULT_MAX_SIG_CACHE_SIZE));
         strUsage += HelpMessageOpt("-maxtipage=<n>", strprintf("Maximum tip age in seconds to consider node in initial block download (default: %u)", DEFAULT_MAX_TIP_AGE));
     }
-    strUsage += HelpMessageOpt("-feeasset=<hex>", strprintf(_("Asset ID (hex) for mempool/relay fees (default: %s)"), DEFAULT_FEE_ASSET));
+    strUsage += HelpMessageOpt("-feeasset=<hex>", strprintf(_("Asset ID (hex) for mempool/relay fees (default: %s)"), defaultChainParams->GetConsensus().pegged_asset.GetHex()));
     strUsage += HelpMessageOpt("-minrelaytxfee=<amt>", strprintf(_("Fees (in %s/kB) smaller than this are considered zero fee for relaying, mining and transaction creation (default: %s)"),
         CURRENCY_UNIT, FormatMoney(DEFAULT_MIN_RELAY_TX_FEE)));
     strUsage += HelpMessageOpt("-maxtxfee=<amt>", strprintf(_("Maximum total fees (in %s) to use in a single wallet transaction or raw transaction; setting this too low may abort large transactions (default: %s)"),
@@ -1011,7 +1011,7 @@ bool AppInitParameterInteraction()
     if (nConnectTimeout <= 0)
         nConnectTimeout = DEFAULT_CONNECT_TIMEOUT;
 
-    policyAsset = CAsset(uint256S(GetArg("-feeasset", DEFAULT_FEE_ASSET)));
+    policyAsset = CAsset(uint256S(GetArg("-feeasset", chainparams.GetConsensus().pegged_asset.GetHex())));
     
     // Fee-per-kilobyte amount considered the same as "free"
     // If you are mining, be careful setting this:

src/policy/policy.h

@@ -17,7 +17,6 @@ class CCoinsViewCache;
 /** The sha256 of Bitcoin genesis block, for easy reference **/
 extern CAsset policyAsset;
 
-static const std::string DEFAULT_FEE_ASSET = "09f663de96be771f50cab5ded00256ffe63773e2eaa9a604092951cc3d7c6621";
 /** Default for -blockmaxsize, which controls the maximum size of block the mining code will create **/
 static const unsigned int DEFAULT_BLOCK_MAX_SIZE = 1000000;
 /** Default for -blockprioritysize, maximum space for zero/low-fee transactions **/

src/test/assetsdir_tests.cpp

@@ -15,7 +15,7 @@ BOOST_AUTO_TEST_CASE(assetsdirTests)
 {
     CAssetsDir tAssetsDir;
     const std::string defaultPeggedLabel = "bitcoin";
-    const std::string defaultPeggedAssetHex = "09f663de96be771f50cab5ded00256ffe63773e2eaa9a604092951cc3d7c6621";
+    const std::string defaultPeggedAssetHex = Params().GetConsensus().pegged_asset.GetHex();
     const CAsset defaultPeggedAsset = Params().GetConsensus().pegged_asset;
     const std::string exampleAssetHex = "fa821b0be5e1387adbcb69dbb3ad33edb5e470831c7c938c4e7b344edbe8bb11";
     const CAsset exampleAsset = CAsset(uint256S(exampleAssetHex));

src/wallet/rpcwallet.cpp

@@ -892,9 +892,9 @@ UniValue getbalance(const JSONRPCRequest& request)
             "\nThe total amount in the wallet\n"
             + HelpExampleCli("getbalance", "") +
             "\nThe total amount in the wallet of the specified asset (leading 3 arguments are ignored)\n"
-            + HelpExampleCli("getbalance", "\"*\" 6 false \"09f663de96be771f50cab5ded00256ffe63773e2eaa9a604092951cc3d7c6621\"") +
+            + HelpExampleCli("getbalance", "\"*\" 6 false \"694d95345fcd292329b5fb4e465a48484c7e218f4d4f1f7a3bfea26dd2d8fc3d\"") +
             "\nAs a json rpc call\n"
-            + HelpExampleRpc("getbalance", "\"*\", 6 false \"09f663de96be771f50cab5ded00256ffe63773e2eaa9a604092951cc3d7c6621\"")
+            + HelpExampleRpc("getbalance", "\"*\", 6 false \"694d95345fcd292329b5fb4e465a48484c7e218f4d4f1f7a3bfea26dd2d8fc3d\"")
         );
 
     LOCK2(cs_main, pwalletMain->cs_wallet);