src/miner.cpp

   1 // Copyright (c) 2009-2010 Satoshi Nakamoto
   2 // Copyright (c) 2009-2014 The Bitcoin Core developers
   3 // Distributed under the MIT software license, see the accompanying
   4 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   5
   6 #include "miner.h"
   7 #ifdef ENABLE_MINING
   8 #include "pow/tromp/equi_miner.h"
   9 #endif
  10
  11 #include "amount.h"
  12 #include "chainparams.h"
  13 #include "cc/StakeGuard.h"
  14 #include "importcoin.h"
  15 #include "consensus/consensus.h"
  16 #include "consensus/upgrades.h"
  17 #include "consensus/validation.h"
  18 #ifdef ENABLE_MINING
  19 #include "crypto/equihash.h"
  20 #include "crypto/verus_hash.h"
  21 #endif
  22 #include "hash.h"
  23 #include "key_io.h"
  24 #include "main.h"
  25 #include "metrics.h"
  26 #include "net.h"
  27 #include "pow.h"
  28 #include "primitives/transaction.h"
  29 #include "random.h"
  30 #include "timedata.h"
  31 #include "ui_interface.h"
  32 #include "util.h"
  33 #include "utilmoneystr.h"
  34 #ifdef ENABLE_WALLET
  35 #include "wallet/wallet.h"
  36 #endif
  37
  38 #include "zcash/Address.hpp"
  39 #include "transaction_builder.h"
  40
  41 #include "sodium.h"
  42
  43 #include <boost/thread.hpp>
  44 #include <boost/tuple/tuple.hpp>
  45 #ifdef ENABLE_MINING
  46 #include <functional>
  47 #endif
  48 #include <mutex>
  49
  50 using namespace std;
  51
  52 //////////////////////////////////////////////////////////////////////////////
  53 //
  54 // BitcoinMiner
  55 //
  56
  57 //
  58 // Unconfirmed transactions in the memory pool often depend on other
  59 // transactions in the memory pool. When we select transactions from the
  60 // pool, we select by highest priority or fee rate, so we might consider
  61 // transactions that depend on transactions that aren't yet in the block.
  62 // The COrphan class keeps track of these 'temporary orphans' while
  63 // CreateBlock is figuring out which transactions to include.
  64 //
  65 class COrphan
  66 {
  67 public:
  68     const CTransaction* ptx;
  69     set<uint256> setDependsOn;
  70     CFeeRate feeRate;
  71     double dPriority;
  72
  73     COrphan(const CTransaction* ptxIn) : ptx(ptxIn), feeRate(0), dPriority(0)
  74     {
  75     }
  76 };
  77
  78 uint64_t nLastBlockTx = 0;
  79 uint64_t nLastBlockSize = 0;
  80
  81 // We want to sort transactions by priority and fee rate, so:
  82 typedef boost::tuple<double, CFeeRate, const CTransaction*> TxPriority;
  83 class TxPriorityCompare
  84 {
  85     bool byFee;
  86
  87 public:
  88     TxPriorityCompare(bool _byFee) : byFee(_byFee) { }
  89
  90     bool operator()(const TxPriority& a, const TxPriority& b)
  91     {
  92         if (byFee)
  93         {
  94             if (a.get<1>() == b.get<1>())
  95                 return a.get<0>() < b.get<0>();
  96             return a.get<1>() < b.get<1>();
  97         }
  98         else
  99         {
 100             if (a.get<0>() == b.get<0>())
 101                 return a.get<1>() < b.get<1>();
 102             return a.get<0>() < b.get<0>();
 103         }
 104     }
 105 };
 106
 107 void UpdateTime(CBlockHeader* pblock, const Consensus::Params& consensusParams, const CBlockIndex* pindexPrev)
 108 {
 109     pblock->nTime = std::max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
 110
 111     // Updating time can change work required on testnet:
 112     if (consensusParams.nPowAllowMinDifficultyBlocksAfterHeight != boost::none) {
 113         pblock->nBits = GetNextWorkRequired(pindexPrev, pblock, consensusParams);
 114     }
 115 }
 116
 117 #include "komodo_defs.h"
 118
 119 extern CCriticalSection cs_metrics;
 120 extern int32_t KOMODO_MININGTHREADS,KOMODO_LONGESTCHAIN,ASSETCHAINS_SEED,IS_KOMODO_NOTARY,USE_EXTERNAL_PUBKEY,KOMODO_CHOSEN_ONE,ASSETCHAIN_INIT,KOMODO_INITDONE,KOMODO_ON_DEMAND,KOMODO_INITDONE,KOMODO_PASSPORT_INITDONE;
 121 extern uint64_t ASSETCHAINS_COMMISSION, ASSETCHAINS_STAKED;
 122 extern bool VERUS_MINTBLOCKS;
 123 extern uint64_t ASSETCHAINS_REWARD[ASSETCHAINS_MAX_ERAS], ASSETCHAINS_TIMELOCKGTE, ASSETCHAINS_NONCEMASK[];
 124 extern const char *ASSETCHAINS_ALGORITHMS[];
 125 extern int32_t VERUS_MIN_STAKEAGE, ASSETCHAINS_ALGO, ASSETCHAINS_EQUIHASH, ASSETCHAINS_VERUSHASH, ASSETCHAINS_LASTERA, ASSETCHAINS_LWMAPOS, ASSETCHAINS_NONCESHIFT[], ASSETCHAINS_HASHESPERROUND[];
 126 extern char ASSETCHAINS_SYMBOL[KOMODO_ASSETCHAIN_MAXLEN];
 127 extern std::string NOTARY_PUBKEY,ASSETCHAINS_OVERRIDE_PUBKEY;
 128 void vcalc_sha256(char deprecated[(256 >> 3) * 2 + 1],uint8_t hash[256 >> 3],uint8_t *src,int32_t len);
 129
 130 extern uint8_t NOTARY_PUBKEY33[33],ASSETCHAINS_OVERRIDE_PUBKEY33[33];
 131 uint32_t Mining_start,Mining_height;
 132 int32_t My_notaryid = -1;
 133 int32_t komodo_chosennotary(int32_t *notaryidp,int32_t height,uint8_t *pubkey33,uint32_t timestamp);
 134 int32_t komodo_pax_opreturn(int32_t height,uint8_t *opret,int32_t maxsize);
 135 int32_t komodo_baseid(char *origbase);
 136 int32_t komodo_validate_interest(const CTransaction &tx,int32_t txheight,uint32_t nTime,int32_t dispflag);
 137 int64_t komodo_block_unlocktime(uint32_t nHeight);
 138 uint64_t komodo_commission(const CBlock *block);
 139 int32_t komodo_staked(CMutableTransaction &txNew,uint32_t nBits,uint32_t *blocktimep,uint32_t *txtimep,uint256 *utxotxidp,int32_t *utxovoutp,uint64_t *utxovaluep,uint8_t *utxosig);
 140 int32_t verus_staked(CBlock *pBlock, CMutableTransaction &txNew, uint32_t &nBits, arith_uint256 &hashResult, uint8_t *utxosig, CPubKey &pk);
 141 int32_t komodo_notaryvin(CMutableTransaction &txNew,uint8_t *notarypub33);
 142
 143 CBlockTemplate* CreateNewBlock(const CScript& _scriptPubKeyIn, int32_t gpucount, bool isStake)
 144 {
 145     CScript scriptPubKeyIn(_scriptPubKeyIn);
 146
 147     CPubKey pk = CPubKey();
 148     std::vector<std::vector<unsigned char>> vAddrs;
 149     txnouttype txT;
 150     if (Solver(scriptPubKeyIn, txT, vAddrs))
 151     {
 152         if (txT == TX_PUBKEY)
 153             pk = CPubKey(vAddrs[0]);
 154     }
 155
 156     uint64_t deposits; int32_t isrealtime,kmdheight; uint32_t blocktime; const CChainParams& chainparams = Params();
 157     //fprintf(stderr,"create new block\n");
 158     // Create new block
 159     if ( gpucount < 0 )
 160         gpucount = KOMODO_MAXGPUCOUNT;
 161     std::unique_ptr<CBlockTemplate> pblocktemplate(new CBlockTemplate());
 162     if(!pblocktemplate.get())
 163     {
 164         fprintf(stderr,"pblocktemplate.get() failure\n");
 165         return NULL;
 166     }
 167     CBlock *pblock = &pblocktemplate->block; // pointer for convenience
 168      // -regtest only: allow overriding block.nVersion with
 169     // -blockversion=N to test forking scenarios
 170     if (Params().MineBlocksOnDemand())
 171         pblock->nVersion = GetArg("-blockversion", pblock->nVersion);
 172
 173     // Add dummy coinbase tx as first transaction
 174     pblock->vtx.push_back(CTransaction());
 175     pblocktemplate->vTxFees.push_back(-1); // updated at end
 176     pblocktemplate->vTxSigOps.push_back(-1); // updated at end
 177
 178     // Largest block you're willing to create:
 179     unsigned int nBlockMaxSize = GetArg("-blockmaxsize", DEFAULT_BLOCK_MAX_SIZE);
 180     // Limit to betweeen 1K and MAX_BLOCK_SIZE-1K for sanity:
 181     nBlockMaxSize = std::max((unsigned int)1000, std::min((unsigned int)(MAX_BLOCK_SIZE-1000), nBlockMaxSize));
 182
 183     // How much of the block should be dedicated to high-priority transactions,
 184     // included regardless of the fees they pay
 185     unsigned int nBlockPrioritySize = GetArg("-blockprioritysize", DEFAULT_BLOCK_PRIORITY_SIZE);
 186     nBlockPrioritySize = std::min(nBlockMaxSize, nBlockPrioritySize);
 187
 188     // Minimum block size you want to create; block will be filled with free transactions
 189     // until there are no more or the block reaches this size:
 190     unsigned int nBlockMinSize = GetArg("-blockminsize", DEFAULT_BLOCK_MIN_SIZE);
 191     nBlockMinSize = std::min(nBlockMaxSize, nBlockMinSize);
 192
 193     // Collect memory pool transactions into the block
 194     CAmount nFees = 0;
 195
 196     // we will attempt to spend any cheats we see
 197     CTransaction cheatTx;
 198     boost::optional<CTransaction> cheatSpend;
 199     uint256 cbHash;
 200
 201     CBlockIndex* pindexPrev = 0;
 202     {
 203         LOCK2(cs_main, mempool.cs);
 204         pindexPrev = chainActive.LastTip();
 205         const int nHeight = pindexPrev->GetHeight() + 1;
 206         const Consensus::Params &consensusParams = chainparams.GetConsensus();
 207         uint32_t consensusBranchId = CurrentEpochBranchId(nHeight, consensusParams);
 208         bool sapling = NetworkUpgradeActive(nHeight, consensusParams, Consensus::UPGRADE_SAPLING);
 209
 210         const int64_t nMedianTimePast = pindexPrev->GetMedianTimePast();
 211         uint32_t proposedTime = GetAdjustedTime();
 212         if (proposedTime == nMedianTimePast)
 213         {
 214             // too fast or stuck, this addresses the too fast issue, while moving
 215             // forward as quickly as possible
 216             for (int i; i < 100; i++)
 217             {
 218                 proposedTime = GetAdjustedTime();
 219                 if (proposedTime == nMedianTimePast)
 220                     MilliSleep(10);
 221             }
 222         }
 223         pblock->nTime = GetAdjustedTime();
 224
 225         CCoinsViewCache view(pcoinsTip);
 226         uint32_t expired; uint64_t commission;
 227
 228         SaplingMerkleTree sapling_tree;
 229         assert(view.GetSaplingAnchorAt(view.GetBestAnchor(SAPLING), sapling_tree));
 230
 231         // Priority order to process transactions
 232         list<COrphan> vOrphan; // list memory doesn't move
 233         map<uint256, vector<COrphan*> > mapDependers;
 234         bool fPrintPriority = GetBoolArg("-printpriority", false);
 235
 236         // This vector will be sorted into a priority queue:
 237         vector<TxPriority> vecPriority;
 238         vecPriority.reserve(mempool.mapTx.size() + 1);
 239
 240         // check if we should add cheat transaction
 241         CBlockIndex *ppast;
 242         CTransaction cb;
 243         int cheatHeight = nHeight - COINBASE_MATURITY < 1 ? 1 : nHeight - COINBASE_MATURITY;
 244         if (cheatCatcher &&
 245             sapling && chainActive.Height() > 100 &&
 246             (ppast = chainActive[cheatHeight]) &&
 247             ppast->IsVerusPOSBlock() &&
 248             cheatList.IsHeightOrGreaterInList(cheatHeight))
 249         {
 250             // get the block and see if there is a cheat candidate for the stake tx
 251             CBlock b;
 252             if (!(fHavePruned && !(ppast->nStatus & BLOCK_HAVE_DATA) && ppast->nTx > 0) && ReadBlockFromDisk(b, ppast, 1))
 253             {
 254                 CTransaction &stakeTx = b.vtx[b.vtx.size() - 1];
 255
 256                 if (cheatList.IsCheatInList(stakeTx, &cheatTx))
 257                 {
 258                     // make and sign the cheat transaction to spend the coinbase to our address
 259                     CMutableTransaction mtx = CreateNewContextualCMutableTransaction(consensusParams, nHeight);
 260
 261                     uint32_t voutNum;
 262                     // get the first vout with value
 263                     for (voutNum = 0; voutNum < b.vtx[0].vout.size(); voutNum++)
 264                     {
 265                         if (b.vtx[0].vout[voutNum].nValue > 0)
 266                             break;
 267                     }
 268
 269                     // send to the same pub key as the destination of this block reward
 270                     if (MakeCheatEvidence(mtx, b.vtx[0], voutNum, cheatTx))
 271                     {
 272                         extern CWallet *pwalletMain;
 273                         LOCK(pwalletMain->cs_wallet);
 274                         TransactionBuilder tb = TransactionBuilder(consensusParams, nHeight);
 275                         cb = b.vtx[0];
 276                         cbHash = cb.GetHash();
 277
 278                         bool hasInput = false;
 279                         for (uint32_t i = 0; i < cb.vout.size(); i++)
 280                         {
 281                             // add the spends with the cheat
 282                             if (cb.vout[i].nValue > 0)
 283                             {
 284                                 tb.AddTransparentInput(COutPoint(cbHash,i), cb.vout[0].scriptPubKey, cb.vout[0].nValue);
 285                                 hasInput = true;
 286                             }
 287                         }
 288
 289                         if (hasInput)
 290                         {
 291                             // this is a send from a t-address to a sapling address, which we don't have an ovk for.
 292                             // Instead, generate a common one from the HD seed. This ensures the data is
 293                             // recoverable, at least for us, while keeping it logically separate from the ZIP 32
 294                             // Sapling key hierarchy, which the user might not be using.
 295                             uint256 ovk;
 296                             HDSeed seed;
 297                             if (pwalletMain->GetHDSeed(seed)) {
 298                                 ovk = ovkForShieldingFromTaddr(seed);
 299
 300                                 // send everything to Sapling address
 301                                 tb.SendChangeTo(cheatCatcher.value(), ovk);
 302
 303                                 tb.AddOpRet(mtx.vout[mtx.vout.size() - 1].scriptPubKey);
 304
 305                                 cheatSpend = tb.Build();
 306                             }
 307                         }
 308                     }
 309                 }
 310             }
 311         }
 312
 313         if (cheatSpend)
 314         {
 315             std::list<CTransaction> removed;
 316             mempool.removeConflicts(cheatTx, removed);
 317             printf("Found cheating stake! Adding cheat spend for %.8f at block #%d, coinbase tx\n%s\n",
 318                 (double)cb.GetValueOut() / (double)COIN, nHeight, cheatSpend.value().vin[0].prevout.hash.GetHex().c_str());
 319
 320             // add to mem pool and relay
 321             if (myAddtomempool(cheatTx))
 322             {
 323                 RelayTransaction(cheatTx);
 324             }
 325         }
 326
 327         // now add transactions from the mem pool
 328         for (CTxMemPool::indexed_transaction_set::iterator mi = mempool.mapTx.begin();
 329              mi != mempool.mapTx.end(); ++mi)
 330         {
 331             const CTransaction& tx = mi->GetTx();
 332
 333             int64_t nLockTimeCutoff = (STANDARD_LOCKTIME_VERIFY_FLAGS & LOCKTIME_MEDIAN_TIME_PAST)
 334             ? nMedianTimePast
 335             : pblock->GetBlockTime();
 336
 337             if (tx.IsCoinBase() || !IsFinalTx(tx, nHeight, nLockTimeCutoff) || IsExpiredTx(tx, nHeight))
 338             {
 339                 //fprintf(stderr,"coinbase.%d finaltx.%d expired.%d\n",tx.IsCoinBase(),IsFinalTx(tx, nHeight, nLockTimeCutoff),IsExpiredTx(tx, nHeight));
 340                 continue;
 341             }
 342
 343             if ( ASSETCHAINS_SYMBOL[0] == 0 && komodo_validate_interest(tx,nHeight,(uint32_t)pblock->nTime,0) < 0 )
 344             {
 345                 //fprintf(stderr,"CreateNewBlock: komodo_validate_interest failure nHeight.%d nTime.%u vs locktime.%u\n",nHeight,(uint32_t)pblock->nTime,(uint32_t)tx.nLockTime);
 346                 continue;
 347             }
 348
 349             COrphan* porphan = NULL;
 350             double dPriority = 0;
 351             CAmount nTotalIn = 0;
 352             bool fMissingInputs = false;
 353             if (tx.IsCoinImport())
 354             {
 355                 CAmount nValueIn = GetCoinImportValue(tx);
 356                 nTotalIn += nValueIn;
 357                 dPriority += (double)nValueIn * 1000;  // flat multiplier
 358             } else {
 359                 BOOST_FOREACH(const CTxIn& txin, tx.vin)
 360                 {
 361                     // Read prev transaction
 362                     if (!view.HaveCoins(txin.prevout.hash))
 363                     {
 364                         // This should never happen; all transactions in the memory
 365                         // pool should connect to either transactions in the chain
 366                         // or other transactions in the memory pool.
 367                         if (!mempool.mapTx.count(txin.prevout.hash))
 368                         {
 369                             LogPrintf("ERROR: mempool transaction missing input\n");
 370                             if (fDebug) assert("mempool transaction missing input" == 0);
 371                             fMissingInputs = true;
 372                             if (porphan)
 373                                 vOrphan.pop_back();
 374                             break;
 375                         }
 376
 377                         // Has to wait for dependencies
 378                         if (!porphan)
 379                         {
 380                             // Use list for automatic deletion
 381                             vOrphan.push_back(COrphan(&tx));
 382                             porphan = &vOrphan.back();
 383                         }
 384                         mapDependers[txin.prevout.hash].push_back(porphan);
 385                         porphan->setDependsOn.insert(txin.prevout.hash);
 386                         nTotalIn += mempool.mapTx.find(txin.prevout.hash)->GetTx().vout[txin.prevout.n].nValue;
 387                         continue;
 388                     }
 389                     const CCoins* coins = view.AccessCoins(txin.prevout.hash);
 390                     assert(coins);
 391
 392                     CAmount nValueIn = coins->vout[txin.prevout.n].nValue;
 393                     nTotalIn += nValueIn;
 394
 395                     int nConf = nHeight - coins->nHeight;
 396
 397                     dPriority += (double)nValueIn * nConf;
 398                 }
 399                 nTotalIn += tx.GetShieldedValueIn();
 400             }
 401
 402             if (fMissingInputs) continue;
 403
 404             // Priority is sum(valuein * age) / modified_txsize
 405             unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION);
 406             dPriority = tx.ComputePriority(dPriority, nTxSize);
 407
 408             uint256 hash = tx.GetHash();
 409             mempool.ApplyDeltas(hash, dPriority, nTotalIn);
 410
 411             CFeeRate feeRate(nTotalIn-tx.GetValueOut(), nTxSize);
 412
 413             if (porphan)
 414             {
 415                 porphan->dPriority = dPriority;
 416                 porphan->feeRate = feeRate;
 417             }
 418             else
 419                 vecPriority.push_back(TxPriority(dPriority, feeRate, &(mi->GetTx())));
 420         }
 421
 422         // Collect transactions into block
 423         uint64_t nBlockSize = 1000;
 424         uint64_t nBlockTx = 0;
 425         int64_t interest;
 426         int nBlockSigOps = 100;
 427         bool fSortedByFee = (nBlockPrioritySize <= 0);
 428
 429         TxPriorityCompare comparer(fSortedByFee);
 430         std::make_heap(vecPriority.begin(), vecPriority.end(), comparer);
 431
 432         while (!vecPriority.empty())
 433         {
 434             // Take highest priority transaction off the priority queue:
 435             double dPriority = vecPriority.front().get<0>();
 436             CFeeRate feeRate = vecPriority.front().get<1>();
 437             const CTransaction& tx = *(vecPriority.front().get<2>());
 438
 439             std::pop_heap(vecPriority.begin(), vecPriority.end(), comparer);
 440             vecPriority.pop_back();
 441
 442             // Size limits
 443             unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION);
 444             if (nBlockSize + nTxSize >= nBlockMaxSize-512) // room for extra autotx
 445             {
 446                 //fprintf(stderr,"nBlockSize %d + %d nTxSize >= %d nBlockMaxSize\n",(int32_t)nBlockSize,(int32_t)nTxSize,(int32_t)nBlockMaxSize);
 447                 continue;
 448             }
 449
 450             // Legacy limits on sigOps:
 451             unsigned int nTxSigOps = GetLegacySigOpCount(tx);
 452             if (nBlockSigOps + nTxSigOps >= MAX_BLOCK_SIGOPS-1)
 453             {
 454                 //fprintf(stderr,"A nBlockSigOps %d + %d nTxSigOps >= %d MAX_BLOCK_SIGOPS-1\n",(int32_t)nBlockSigOps,(int32_t)nTxSigOps,(int32_t)MAX_BLOCK_SIGOPS);
 455                 continue;
 456             }
 457             // Skip free transactions if we're past the minimum block size:
 458             const uint256& hash = tx.GetHash();
 459             double dPriorityDelta = 0;
 460             CAmount nFeeDelta = 0;
 461             mempool.ApplyDeltas(hash, dPriorityDelta, nFeeDelta);
 462             if (fSortedByFee && (dPriorityDelta <= 0) && (nFeeDelta <= 0) && (feeRate < ::minRelayTxFee) && (nBlockSize + nTxSize >= nBlockMinSize))
 463             {
 464                 //fprintf(stderr,"fee rate skip\n");
 465                 continue;
 466             }
 467             // Prioritise by fee once past the priority size or we run out of high-priority
 468             // transactions:
 469             if (!fSortedByFee &&
 470                 ((nBlockSize + nTxSize >= nBlockPrioritySize) || !AllowFree(dPriority)))
 471             {
 472                 fSortedByFee = true;
 473                 comparer = TxPriorityCompare(fSortedByFee);
 474                 std::make_heap(vecPriority.begin(), vecPriority.end(), comparer);
 475             }
 476
 477             if (!view.HaveInputs(tx))
 478             {
 479                 //fprintf(stderr,"dont have inputs\n");
 480                 continue;
 481             }
 482             CAmount nTxFees = view.GetValueIn(chainActive.LastTip()->GetHeight(),&interest,tx,chainActive.LastTip()->nTime)-tx.GetValueOut();
 483
 484             nTxSigOps += GetP2SHSigOpCount(tx, view);
 485             if (nBlockSigOps + nTxSigOps >= MAX_BLOCK_SIGOPS-1)
 486             {
 487                 //fprintf(stderr,"B nBlockSigOps %d + %d nTxSigOps >= %d MAX_BLOCK_SIGOPS-1\n",(int32_t)nBlockSigOps,(int32_t)nTxSigOps,(int32_t)MAX_BLOCK_SIGOPS);
 488                 continue;
 489             }
 490             // Note that flags: we don't want to set mempool/IsStandard()
 491             // policy here, but we still have to ensure that the block we
 492             // create only contains transactions that are valid in new blocks.
 493             CValidationState state;
 494             PrecomputedTransactionData txdata(tx);
 495             if (!ContextualCheckInputs(tx, state, view, true, MANDATORY_SCRIPT_VERIFY_FLAGS, true, txdata, Params().GetConsensus(), consensusBranchId))
 496             {
 497                 //fprintf(stderr,"context failure\n");
 498                 continue;
 499             }
 500             UpdateCoins(tx, view, nHeight);
 501
 502             BOOST_FOREACH(const OutputDescription &outDescription, tx.vShieldedOutput) {
 503                 sapling_tree.append(outDescription.cm);
 504             }
 505
 506             // Added
 507             pblock->vtx.push_back(tx);
 508             pblocktemplate->vTxFees.push_back(nTxFees);
 509             pblocktemplate->vTxSigOps.push_back(nTxSigOps);
 510             nBlockSize += nTxSize;
 511             ++nBlockTx;
 512             nBlockSigOps += nTxSigOps;
 513             nFees += nTxFees;
 514
 515             if (fPrintPriority)
 516             {
 517                 LogPrintf("priority %.1f fee %s txid %s\n",dPriority, feeRate.ToString(), tx.GetHash().ToString());
 518             }
 519
 520             // Add transactions that depend on this one to the priority queue
 521             if (mapDependers.count(hash))
 522             {
 523                 BOOST_FOREACH(COrphan* porphan, mapDependers[hash])
 524                 {
 525                     if (!porphan->setDependsOn.empty())
 526                     {
 527                         porphan->setDependsOn.erase(hash);
 528                         if (porphan->setDependsOn.empty())
 529                         {
 530                             vecPriority.push_back(TxPriority(porphan->dPriority, porphan->feeRate, porphan->ptx));
 531                             std::push_heap(vecPriority.begin(), vecPriority.end(), comparer);
 532                         }
 533                     }
 534                 }
 535             }
 536         }
 537
 538         nLastBlockTx = nBlockTx;
 539         nLastBlockSize = nBlockSize;
 540         blocktime = 1 + std::max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
 541         //pblock->nTime = blocktime + 1;
 542         pblock->nBits = GetNextWorkRequired(pindexPrev, pblock, Params().GetConsensus());
 543
 544         int32_t stakeHeight = chainActive.Height() + 1;
 545
 546         //LogPrintf("CreateNewBlock(): total size %u blocktime.%u nBits.%08x\n", nBlockSize,blocktime,pblock->nBits);
 547         if ( ASSETCHAINS_SYMBOL[0] != 0 && isStake )
 548         {
 549             uint64_t txfees,utxovalue; uint32_t txtime; uint256 utxotxid; int32_t i,siglen,numsigs,utxovout; uint8_t utxosig[128],*ptr;
 550             CMutableTransaction txStaked = CreateNewContextualCMutableTransaction(Params().GetConsensus(), stakeHeight);
 551
 552             //if ( blocktime > pindexPrev->GetMedianTimePast()+60 )
 553             //    blocktime = pindexPrev->GetMedianTimePast() + 60;
 554             if (ASSETCHAINS_LWMAPOS != 0)
 555             {
 556                 uint32_t nBitsPOS;
 557                 arith_uint256 posHash;
 558
 559                 siglen = verus_staked(pblock, txStaked, nBitsPOS, posHash, utxosig, pk);
 560                 blocktime = GetAdjustedTime();
 561
 562                 // change the scriptPubKeyIn to the same output script exactly as the staking transaction
 563                 if (siglen > 0)
 564                     scriptPubKeyIn = CScript(txStaked.vout[0].scriptPubKey);
 565             }
 566             else
 567             {
 568                 siglen = komodo_staked(txStaked, pblock->nBits, &blocktime, &txtime, &utxotxid, &utxovout, &utxovalue, utxosig);
 569             }
 570
 571             if ( siglen > 0 )
 572             {
 573                 CAmount txfees;
 574
 575                 // after Sapling, stake transactions have a fee, but it is recovered in the reward
 576                 // this ensures that a rebroadcast goes through quickly to begin staking again
 577                 txfees = sapling ? DEFAULT_STAKE_TXFEE : 0;
 578
 579                 pblock->vtx.push_back(txStaked);
 580                 pblocktemplate->vTxFees.push_back(txfees);
 581                 pblocktemplate->vTxSigOps.push_back(GetLegacySigOpCount(txStaked));
 582                 nFees += txfees;
 583                 pblock->nTime = blocktime;
 584                 //printf("staking PoS ht.%d t%u lag.%u\n",(int32_t)chainActive.LastTip()->GetHeight()+1,blocktime,(uint32_t)(GetAdjustedTime() - (blocktime-13)));
 585             } else return(0); //fprintf(stderr,"no utxos eligible for staking\n");
 586         }
 587
 588         // Create coinbase tx
 589         CMutableTransaction txNew = CreateNewContextualCMutableTransaction(consensusParams, nHeight);
 590         txNew.vin.resize(1);
 591         txNew.vin[0].prevout.SetNull();
 592         txNew.vin[0].scriptSig = CScript() << nHeight << OP_0;
 593
 594         txNew.vout.resize(1);
 595         txNew.vout[0].scriptPubKey = scriptPubKeyIn;
 596         txNew.vout[0].nValue = GetBlockSubsidy(nHeight,consensusParams) + nFees;
 597
 598         // once we get to Sapling, enable CC StakeGuard for stake transactions
 599         if (isStake && sapling)
 600         {
 601             // if there is a specific destination, use it
 602             CTransaction stakeTx = pblock->vtx[pblock->vtx.size() - 1];
 603             CStakeParams p;
 604             if (ValidateStakeTransaction(stakeTx, p, false))
 605             {
 606                 if (!p.pk.IsValid() || !MakeGuardedOutput(txNew.vout[0].nValue, p.pk, stakeTx, txNew.vout[0]))
 607                 {
 608                     fprintf(stderr,"CreateNewBlock: failed to make GuardedOutput on staking coinbase\n");
 609                     return 0;
 610                 }
 611             }
 612             else
 613             {
 614                 fprintf(stderr,"CreateNewBlock: invalid stake transaction\n");
 615                 return 0;
 616             }
 617         }
 618
 619         txNew.nExpiryHeight = 0;
 620         txNew.nLockTime = std::max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
 621
 622         if ( ASSETCHAINS_SYMBOL[0] == 0 && IS_KOMODO_NOTARY != 0 && My_notaryid >= 0 )
 623             txNew.vout[0].nValue += 5000;
 624
 625         // check if coinbase transactions must be time locked at current subsidy and prepend the time lock
 626         // to transaction if so, cast for GTE operator
 627         if ((uint64_t)(txNew.vout[0].nValue) >= ASSETCHAINS_TIMELOCKGTE)
 628         {
 629             int32_t opretlen, p2shlen, scriptlen;
 630             CScriptExt opretScript = CScriptExt();
 631
 632             txNew.vout.resize(2);
 633
 634             // prepend time lock to original script unless original script is P2SH, in which case, we will leave the coins
 635             // protected only by the time lock rather than 100% inaccessible
 636             opretScript.AddCheckLockTimeVerify(komodo_block_unlocktime(nHeight));
 637             if (scriptPubKeyIn.IsPayToScriptHash() || scriptPubKeyIn.IsPayToCryptoCondition())
 638             {
 639                 fprintf(stderr,"CreateNewBlock: attempt to add timelock to pay2sh or pay2cc\n");
 640                 return 0;
 641             }
 642
 643             opretScript += scriptPubKeyIn;
 644
 645             txNew.vout[0].scriptPubKey = CScriptExt().PayToScriptHash(CScriptID(opretScript));
 646             txNew.vout[1].scriptPubKey = CScriptExt().OpReturnScript(opretScript, OPRETTYPE_TIMELOCK);
 647             txNew.vout[1].nValue = 0;
 648         } // timelocks and commissions are currently incompatible due to validation complexity of the combination
 649         else if ( nHeight > 1 && ASSETCHAINS_SYMBOL[0] != 0 && ASSETCHAINS_OVERRIDE_PUBKEY33[0] != 0 && ASSETCHAINS_COMMISSION != 0 && (commission= komodo_commission((CBlock*)&pblocktemplate->block)) != 0 )
 650         {
 651             int32_t i; uint8_t *ptr;
 652             txNew.vout.resize(2);
 653             txNew.vout[1].nValue = commission;
 654             txNew.vout[1].scriptPubKey.resize(35);
 655             ptr = (uint8_t *)&txNew.vout[1].scriptPubKey[0];
 656             ptr[0] = 33;
 657             for (i=0; i<33; i++)
 658                 ptr[i+1] = ASSETCHAINS_OVERRIDE_PUBKEY33[i];
 659             ptr[34] = OP_CHECKSIG;
 660             //printf("autocreate commision vout\n");
 661         }
 662
 663         pblock->vtx[0] = txNew;
 664         pblocktemplate->vTxFees[0] = -nFees;
 665
 666         // if not Verus stake, setup nonce, otherwise, leave it alone
 667         if (!isStake || ASSETCHAINS_LWMAPOS == 0)
 668         {
 669             // Randomise nonce
 670             arith_uint256 nonce = UintToArith256(GetRandHash());
 671
 672             // Clear the top 16 and bottom 16 or 24 bits (for local use as thread flags and counters)
 673             nonce <<= ASSETCHAINS_NONCESHIFT[ASSETCHAINS_ALGO];
 674             nonce >>= 16;
 675             pblock->nNonce = ArithToUint256(nonce);
 676         }
 677
 678         // Fill in header
 679         pblock->hashPrevBlock  = pindexPrev->GetBlockHash();
 680         pblock->hashFinalSaplingRoot   = sapling_tree.root();
 681
 682         // all Verus PoS chains need this data in the block at all times
 683         if ( ASSETCHAINS_LWMAPOS || ASSETCHAINS_SYMBOL[0] == 0 || ASSETCHAINS_STAKED == 0 || KOMODO_MININGTHREADS > 0 )
 684         {
 685             UpdateTime(pblock, Params().GetConsensus(), pindexPrev);
 686             pblock->nBits = GetNextWorkRequired(pindexPrev, pblock, Params().GetConsensus());
 687         }
 688         pblock->nSolution.clear();
 689         pblocktemplate->vTxSigOps[0] = GetLegacySigOpCount(pblock->vtx[0]);
 690         if ( ASSETCHAINS_SYMBOL[0] == 0 && IS_KOMODO_NOTARY != 0 && My_notaryid >= 0 )
 691         {
 692             uint32_t r;
 693             CMutableTransaction txNotary = CreateNewContextualCMutableTransaction(Params().GetConsensus(), chainActive.Height() + 1);
 694             if ( pblock->nTime < pindexPrev->nTime+60 )
 695                 pblock->nTime = pindexPrev->nTime + 60;
 696             if ( gpucount < 33 )
 697             {
 698                 uint8_t tmpbuffer[40]; uint32_t r; int32_t n=0; uint256 randvals;
 699                 memcpy(&tmpbuffer[n],&My_notaryid,sizeof(My_notaryid)), n += sizeof(My_notaryid);
 700                 memcpy(&tmpbuffer[n],&Mining_height,sizeof(Mining_height)), n += sizeof(Mining_height);
 701                 memcpy(&tmpbuffer[n],&pblock->hashPrevBlock,sizeof(pblock->hashPrevBlock)), n += sizeof(pblock->hashPrevBlock);
 702                 vcalc_sha256(0,(uint8_t *)&randvals,tmpbuffer,n);
 703                 memcpy(&r,&randvals,sizeof(r));
 704                 pblock->nTime += (r % (33 - gpucount)*(33 - gpucount));
 705             }
 706             if ( komodo_notaryvin(txNotary,NOTARY_PUBKEY33) > 0 )
 707             {
 708                 CAmount txfees = 5000;
 709                 pblock->vtx.push_back(txNotary);
 710                 pblocktemplate->vTxFees.push_back(txfees);
 711                 pblocktemplate->vTxSigOps.push_back(GetLegacySigOpCount(txNotary));
 712                 nFees += txfees;
 713                 pblocktemplate->vTxFees[0] = -nFees;
 714                 //*(uint64_t *)(&pblock->vtx[0].vout[0].nValue) += txfees;
 715                 //fprintf(stderr,"added notaryvin\n");
 716             }
 717             else
 718             {
 719                 fprintf(stderr,"error adding notaryvin, need to create 0.0001 utxos\n");
 720                 return(0);
 721             }
 722         }
 723         else if ( ASSETCHAINS_CC == 0 && pindexPrev != 0 && ASSETCHAINS_STAKED == 0 && (ASSETCHAINS_SYMBOL[0] != 0 || IS_KOMODO_NOTARY == 0 || My_notaryid < 0) )
 724         {
 725             CValidationState state;
 726             //fprintf(stderr,"check validity\n");
 727             if ( !TestBlockValidity(state, *pblock, pindexPrev, false, false)) // invokes CC checks
 728             {
 729                 throw std::runtime_error("CreateNewBlock(): TestBlockValidity failed");
 730             }
 731             //fprintf(stderr,"valid\n");
 732         }
 733     }
 734     //fprintf(stderr,"done new block\n");
 735     return pblocktemplate.release();
 736 }
 737
 738 /*
 739  #ifdef ENABLE_WALLET
 740  boost::optional<CScript> GetMinerScriptPubKey(CReserveKey& reservekey)
 741  #else
 742  boost::optional<CScript> GetMinerScriptPubKey()
 743  #endif
 744  {
 745  CKeyID keyID;
 746  CBitcoinAddress addr;
 747  if (addr.SetString(GetArg("-mineraddress", ""))) {
 748  addr.GetKeyID(keyID);
 749  } else {
 750  #ifdef ENABLE_WALLET
 751  CPubKey pubkey;
 752  if (!reservekey.GetReservedKey(pubkey)) {
 753  return boost::optional<CScript>();
 754  }
 755  keyID = pubkey.GetID();
 756  #else
 757  return boost::optional<CScript>();
 758  #endif
 759  }
 760
 761  CScript scriptPubKey = CScript() << OP_DUP << OP_HASH160 << ToByteVector(keyID) << OP_EQUALVERIFY << OP_CHECKSIG;
 762  return scriptPubKey;
 763  }
 764
 765  #ifdef ENABLE_WALLET
 766  CBlockTemplate* CreateNewBlockWithKey(CReserveKey& reservekey)
 767  {
 768  boost::optional<CScript> scriptPubKey = GetMinerScriptPubKey(reservekey);
 769  #else
 770  CBlockTemplate* CreateNewBlockWithKey()
 771  {
 772  boost::optional<CScript> scriptPubKey = GetMinerScriptPubKey();
 773  #endif
 774
 775  if (!scriptPubKey) {
 776  return NULL;
 777  }
 778  return CreateNewBlock(*scriptPubKey);
 779  }*/
 780
 781 //////////////////////////////////////////////////////////////////////////////
 782 //
 783 // Internal miner
 784 //
 785
 786 #ifdef ENABLE_MINING
 787
 788 void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int& nExtraNonce)
 789 {
 790     // Update nExtraNonce
 791     static uint256 hashPrevBlock;
 792     if (hashPrevBlock != pblock->hashPrevBlock)
 793     {
 794         nExtraNonce = 0;
 795         hashPrevBlock = pblock->hashPrevBlock;
 796     }
 797     ++nExtraNonce;
 798     unsigned int nHeight = pindexPrev->GetHeight()+1; // Height first in coinbase required for block.version=2
 799     CMutableTransaction txCoinbase(pblock->vtx[0]);
 800     txCoinbase.vin[0].scriptSig = (CScript() << nHeight << CScriptNum(nExtraNonce)) + COINBASE_FLAGS;
 801     assert(txCoinbase.vin[0].scriptSig.size() <= 100);
 802
 803     pblock->vtx[0] = txCoinbase;
 804     pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 805 }
 806
 807 #ifdef ENABLE_WALLET
 808 //////////////////////////////////////////////////////////////////////////////
 809 //
 810 // Internal miner
 811 //
 812
 813 CBlockTemplate* CreateNewBlockWithKey(CReserveKey& reservekey, int32_t nHeight, int32_t gpucount, bool isStake)
 814 {
 815     CPubKey pubkey; CScript scriptPubKey; uint8_t *ptr; int32_t i;
 816     if ( nHeight == 1 && ASSETCHAINS_OVERRIDE_PUBKEY33[0] != 0 )
 817     {
 818         scriptPubKey = CScript() << ParseHex(ASSETCHAINS_OVERRIDE_PUBKEY) << OP_CHECKSIG;
 819     }
 820     else if ( USE_EXTERNAL_PUBKEY != 0 )
 821     {
 822         //fprintf(stderr,"use notary pubkey\n");
 823         scriptPubKey = CScript() << ParseHex(NOTARY_PUBKEY) << OP_CHECKSIG;
 824     }
 825     else
 826     {
 827         if (!reservekey.GetReservedKey(pubkey))
 828         {
 829             return NULL;
 830         }
 831         scriptPubKey.resize(35);
 832         ptr = (uint8_t *)pubkey.begin();
 833         scriptPubKey[0] = 33;
 834         for (i=0; i<33; i++)
 835             scriptPubKey[i+1] = ptr[i];
 836         scriptPubKey[34] = OP_CHECKSIG;
 837         //scriptPubKey = CScript() << ToByteVector(pubkey) << OP_CHECKSIG;
 838     }
 839     return CreateNewBlock(scriptPubKey, gpucount, isStake);
 840 }
 841
 842 void komodo_broadcast(CBlock *pblock,int32_t limit)
 843 {
 844     int32_t n = 1;
 845     //fprintf(stderr,"broadcast new block t.%u\n",(uint32_t)time(NULL));
 846     {
 847         LOCK(cs_vNodes);
 848         BOOST_FOREACH(CNode* pnode, vNodes)
 849         {
 850             if ( pnode->hSocket == INVALID_SOCKET )
 851                 continue;
 852             if ( (rand() % n) == 0 )
 853             {
 854                 pnode->PushMessage("block", *pblock);
 855                 if ( n++ > limit )
 856                     break;
 857             }
 858         }
 859     }
 860     //fprintf(stderr,"finished broadcast new block t.%u\n",(uint32_t)time(NULL));
 861 }
 862
 863 static bool ProcessBlockFound(CBlock* pblock, CWallet& wallet, CReserveKey& reservekey)
 864 #else
 865 static bool ProcessBlockFound(CBlock* pblock)
 866 #endif // ENABLE_WALLET
 867 {
 868     LogPrintf("%s\n", pblock->ToString());
 869     LogPrintf("generated %s height.%d\n", FormatMoney(pblock->vtx[0].vout[0].nValue),chainActive.LastTip()->GetHeight()+1);
 870
 871     // Found a solution
 872     {
 873         if (pblock->hashPrevBlock != chainActive.LastTip()->GetBlockHash())
 874         {
 875             uint256 hash; int32_t i;
 876             hash = pblock->hashPrevBlock;
 877             for (i=31; i>=0; i--)
 878                 fprintf(stderr,"%02x",((uint8_t *)&hash)[i]);
 879             fprintf(stderr," <- prev (stale)\n");
 880             hash = chainActive.LastTip()->GetBlockHash();
 881             for (i=31; i>=0; i--)
 882                 fprintf(stderr,"%02x",((uint8_t *)&hash)[i]);
 883             fprintf(stderr," <- chainTip (stale)\n");
 884
 885             return error("KomodoMiner: generated block is stale");
 886         }
 887     }
 888
 889 #ifdef ENABLE_WALLET
 890     // Remove key from key pool
 891     if ( IS_KOMODO_NOTARY == 0 )
 892     {
 893         if (GetArg("-mineraddress", "").empty()) {
 894             // Remove key from key pool
 895             reservekey.KeepKey();
 896         }
 897     }
 898     // Track how many getdata requests this block gets
 899     //if ( 0 )
 900     {
 901         //fprintf(stderr,"lock cs_wallet\n");
 902         LOCK(wallet.cs_wallet);
 903         wallet.mapRequestCount[pblock->GetHash()] = 0;
 904     }
 905 #endif
 906     //fprintf(stderr,"process new block\n");
 907
 908     // Process this block the same as if we had received it from another node
 909     CValidationState state;
 910     if (!ProcessNewBlock(1,chainActive.LastTip()->GetHeight()+1,state, NULL, pblock, true, NULL))
 911         return error("KomodoMiner: ProcessNewBlock, block not accepted");
 912
 913     TrackMinedBlock(pblock->GetHash());
 914     komodo_broadcast(pblock,16);
 915     return true;
 916 }
 917
 918 int32_t komodo_baseid(char *origbase);
 919 int32_t komodo_eligiblenotary(uint8_t pubkeys[66][33],int32_t *mids,uint32_t *blocktimes,int32_t *nonzpkeysp,int32_t height);
 920 arith_uint256 komodo_PoWtarget(int32_t *percPoSp,arith_uint256 target,int32_t height,int32_t goalperc);
 921 int32_t FOUND_BLOCK,KOMODO_MAYBEMINED;
 922 extern int32_t KOMODO_LASTMINED,KOMODO_INSYNC;
 923 int32_t roundrobin_delay;
 924 arith_uint256 HASHTarget,HASHTarget_POW;
 925
 926 // wait for peers to connect
 927 int32_t waitForPeers(const CChainParams &chainparams)
 928 {
 929     if (chainparams.MiningRequiresPeers())
 930     {
 931         bool fvNodesEmpty;
 932         {
 933             boost::this_thread::interruption_point();
 934             LOCK(cs_vNodes);
 935             fvNodesEmpty = vNodes.empty();
 936         }
 937         if (fvNodesEmpty || IsNotInSync())
 938         {
 939             int loops = 0, blockDiff = 0, newDiff = 0;
 940
 941             do {
 942                 if (fvNodesEmpty)
 943                 {
 944                     MilliSleep(1000 + rand() % 4000);
 945                     boost::this_thread::interruption_point();
 946                     LOCK(cs_vNodes);
 947                     fvNodesEmpty = vNodes.empty();
 948                     loops = 0;
 949                     blockDiff = 0;
 950                 }
 951                 if ((newDiff = IsNotInSync()) > 1)
 952                 {
 953                     if (blockDiff != newDiff)
 954                     {
 955                         blockDiff = newDiff;
 956                     }
 957                     else
 958                     {
 959                         if (++loops <= 10)
 960                         {
 961                             MilliSleep(1000);
 962                         }
 963                         else break;
 964                     }
 965                 }
 966             } while (fvNodesEmpty || IsNotInSync());
 967             MilliSleep(100 + rand() % 400);
 968         }
 969     }
 970 }
 971
 972 #ifdef ENABLE_WALLET
 973 CBlockIndex *get_chainactive(int32_t height)
 974 {
 975     if ( chainActive.LastTip() != 0 )
 976     {
 977         if ( height <= chainActive.LastTip()->GetHeight() )
 978         {
 979             LOCK(cs_main);
 980             return(chainActive[height]);
 981         }
 982         // else fprintf(stderr,"get_chainactive height %d > active.%d\n",height,chainActive.Tip()->GetHeight());
 983     }
 984     //fprintf(stderr,"get_chainactive null chainActive.Tip() height %d\n",height);
 985     return(0);
 986 }
 987
 988 /*
 989  * A separate thread to stake, while the miner threads mine.
 990  */
 991 void static VerusStaker(CWallet *pwallet)
 992 {
 993     LogPrintf("Verus staker thread started\n");
 994     RenameThread("verus-staker");
 995
 996     const CChainParams& chainparams = Params();
 997     auto consensusParams = chainparams.GetConsensus();
 998
 999     // Each thread has its own key
1000     CReserveKey reservekey(pwallet);
1001
1002     // Each thread has its own counter
1003     unsigned int nExtraNonce = 0;
1004     std::vector<unsigned char> solnPlaceholder = std::vector<unsigned char>();
1005     solnPlaceholder.resize(Eh200_9.SolutionWidth);
1006     uint8_t *script; uint64_t total,checktoshis; int32_t i,j;
1007
1008     while ( (ASSETCHAIN_INIT == 0 || KOMODO_INITDONE == 0) ) //chainActive.Tip()->GetHeight() != 235300 &&
1009     {
1010         sleep(1);
1011         if ( komodo_baseid(ASSETCHAINS_SYMBOL) < 0 )
1012             break;
1013     }
1014
1015     // try a nice clean peer connection to start
1016     CBlockIndex *pindexPrev, *pindexCur;
1017     do {
1018         pindexPrev = chainActive.LastTip();
1019         MilliSleep(5000 + rand() % 5000);
1020         waitForPeers(chainparams);
1021         pindexCur = chainActive.LastTip();
1022     } while (pindexPrev != pindexCur);
1023
1024     try {
1025         while (true)
1026         {
1027             waitForPeers(chainparams);
1028             CBlockIndex* pindexPrev = chainActive.LastTip();
1029             printf("Staking height %d for %s\n", pindexPrev->GetHeight() + 1, ASSETCHAINS_SYMBOL);
1030
1031             // Create new block
1032             unsigned int nTransactionsUpdatedLast = mempool.GetTransactionsUpdated();
1033             if ( Mining_height != pindexPrev->GetHeight()+1 )
1034             {
1035                 Mining_height = pindexPrev->GetHeight()+1;
1036                 Mining_start = (uint32_t)time(NULL);
1037             }
1038
1039             // Check for stop or if block needs to be rebuilt
1040             boost::this_thread::interruption_point();
1041
1042             // try to stake a block
1043             CBlockTemplate *ptr = NULL;
1044             if (Mining_height > VERUS_MIN_STAKEAGE)
1045                 ptr = CreateNewBlockWithKey(reservekey, Mining_height, 0, true);
1046
1047             if ( ptr == 0 )
1048             {
1049                 // wait to try another staking block until after the tip moves again
1050                 while ( chainActive.LastTip() == pindexPrev )
1051                     sleep(1);
1052                 continue;
1053             }
1054
1055             unique_ptr<CBlockTemplate> pblocktemplate(ptr);
1056             if (!pblocktemplate.get())
1057             {
1058                 if (GetArg("-mineraddress", "").empty()) {
1059                     LogPrintf("Error in %s staker: Keypool ran out, please call keypoolrefill before restarting the mining thread\n",
1060                               ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO]);
1061                 } else {
1062                     // Should never reach here, because -mineraddress validity is checked in init.cpp
1063                     LogPrintf("Error in %s staker: Invalid %s -mineraddress\n", ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO], ASSETCHAINS_SYMBOL);
1064                 }
1065                 return;
1066             }
1067
1068             CBlock *pblock = &pblocktemplate->block;
1069             LogPrintf("Staking with %u transactions in block (%u bytes)\n", pblock->vtx.size(),::GetSerializeSize(*pblock,SER_NETWORK,PROTOCOL_VERSION));
1070             //
1071             // Search
1072             //
1073             int64_t nStart = GetTime();
1074
1075             // take up the necessary space for alignment
1076             pblock->nSolution = solnPlaceholder;
1077
1078             // we don't use this, but IncrementExtraNonce is the function that builds the merkle tree
1079             unsigned int nExtraNonce = 0;
1080             IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
1081
1082             if (vNodes.empty() && chainparams.MiningRequiresPeers())
1083             {
1084                 if ( Mining_height > ASSETCHAINS_MINHEIGHT )
1085                 {
1086                     fprintf(stderr,"no nodes, attempting reconnect\n");
1087                     continue;
1088                 }
1089             }
1090
1091             if (mempool.GetTransactionsUpdated() != nTransactionsUpdatedLast && GetTime() - nStart > 60)
1092             {
1093                 fprintf(stderr,"timeout, retrying\n");
1094                 continue;
1095             }
1096
1097             if ( pindexPrev != chainActive.LastTip() )
1098             {
1099                 printf("Block %d added to chain\n", chainActive.LastTip()->GetHeight());
1100                 MilliSleep(250);
1101                 continue;
1102             }
1103
1104             int32_t unlockTime = komodo_block_unlocktime(Mining_height);
1105             int64_t subsidy = (int64_t)(pblock->vtx[0].vout[0].nValue);
1106
1107             uint256 hashTarget = ArithToUint256(arith_uint256().SetCompact(pblock->nBits));
1108
1109             pblock->nBits = GetNextWorkRequired(pindexPrev, pblock, consensusParams);
1110
1111             UpdateTime(pblock, consensusParams, pindexPrev);
1112
1113             ProcessBlockFound(pblock, *pwallet, reservekey);
1114
1115             LogPrintf("Using %s algorithm:\n", ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO]);
1116             LogPrintf("Staked block found  \n  hash: %s  \ntarget: %s\n", pblock->GetHash().GetHex(), hashTarget.GetHex());
1117             printf("Found block %d \n", Mining_height );
1118             printf("staking reward %.8f %s!\n", (double)subsidy / (double)COIN, ASSETCHAINS_SYMBOL);
1119             arith_uint256 post;
1120             post.SetCompact(pblock->GetVerusPOSTarget());
1121             pindexPrev = get_chainactive(Mining_height - 100);
1122             CTransaction &sTx = pblock->vtx[pblock->vtx.size()-1];
1123             printf("POS hash: %s  \ntarget:   %s\n",
1124                 CTransaction::_GetVerusPOSHash(&(pblock->nNonce), sTx.vin[0].prevout.hash, sTx.vin[0].prevout.n, Mining_height, pindexPrev->GetBlockHeader().GetVerusEntropyHash(Mining_height - 100), sTx.vout[0].nValue).GetHex().c_str(), ArithToUint256(post).GetHex().c_str());
1125             if (unlockTime > Mining_height && subsidy >= ASSETCHAINS_TIMELOCKGTE)
1126                 printf("- timelocked until block %i\n", unlockTime);
1127             else
1128                 printf("\n");
1129
1130             // Check for stop or if block needs to be rebuilt
1131             boost::this_thread::interruption_point();
1132
1133             sleep(3);
1134
1135             // In regression test mode, stop mining after a block is found.
1136             if (chainparams.MineBlocksOnDemand()) {
1137                 throw boost::thread_interrupted();
1138             }
1139         }
1140     }
1141     catch (const boost::thread_interrupted&)
1142     {
1143         LogPrintf("VerusStaker terminated\n");
1144         throw;
1145     }
1146     catch (const std::runtime_error &e)
1147     {
1148         LogPrintf("VerusStaker runtime error: %s\n", e.what());
1149         return;
1150     }
1151 }
1152
1153 void static BitcoinMiner_noeq(CWallet *pwallet)
1154 #else
1155 void static BitcoinMiner_noeq()
1156 #endif
1157 {
1158     LogPrintf("%s miner started\n", ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO]);
1159     RenameThread("verushash-miner");
1160
1161 #ifdef ENABLE_WALLET
1162     // Each thread has its own key
1163     CReserveKey reservekey(pwallet);
1164 #endif
1165
1166     const CChainParams& chainparams = Params();
1167     // Each thread has its own counter
1168     unsigned int nExtraNonce = 0;
1169     std::vector<unsigned char> solnPlaceholder = std::vector<unsigned char>();
1170     solnPlaceholder.resize(Eh200_9.SolutionWidth);
1171     uint8_t *script; uint64_t total,checktoshis; int32_t i,j;
1172
1173     while ( (ASSETCHAIN_INIT == 0 || KOMODO_INITDONE == 0) ) //chainActive.Tip()->GetHeight() != 235300 &&
1174     {
1175         sleep(1);
1176         if ( komodo_baseid(ASSETCHAINS_SYMBOL) < 0 )
1177             break;
1178     }
1179
1180     SetThreadPriority(THREAD_PRIORITY_LOWEST);
1181
1182     // try a nice clean peer connection to start
1183     CBlockIndex *pindexPrev, *pindexCur;
1184     do {
1185         pindexPrev = chainActive.LastTip();
1186         MilliSleep(5000 + rand() % 5000);
1187         waitForPeers(chainparams);
1188         pindexCur = chainActive.LastTip();
1189     } while (pindexPrev != pindexCur);
1190
1191     // this will not stop printing more than once in all cases, but it will allow us to print in all cases
1192     // and print duplicates rarely without having to synchronize
1193     static CBlockIndex *lastChainTipPrinted;
1194
1195     miningTimer.start();
1196
1197     try {
1198         printf("Mining %s with %s\n", ASSETCHAINS_SYMBOL, ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO]);
1199         while (true)
1200         {
1201             miningTimer.stop();
1202             waitForPeers(chainparams);
1203
1204             pindexPrev = chainActive.LastTip();
1205             sleep(1);
1206
1207             // prevent forking on startup before the diff algorithm kicks in
1208             if (pindexPrev->GetHeight() < 50 || pindexPrev != chainActive.LastTip())
1209             {
1210                 do {
1211                     pindexPrev = chainActive.LastTip();
1212                     MilliSleep(5000 + rand() % 5000);
1213                 } while (pindexPrev != chainActive.LastTip());
1214             }
1215
1216             // Create new block
1217             unsigned int nTransactionsUpdatedLast = mempool.GetTransactionsUpdated();
1218             if ( Mining_height != pindexPrev->GetHeight()+1 )
1219             {
1220                 Mining_height = pindexPrev->GetHeight()+1;
1221                 Mining_start = (uint32_t)time(NULL);
1222             }
1223
1224             if (lastChainTipPrinted != pindexPrev)
1225             {
1226                 printf("Mining height %d\n", Mining_height);
1227                 lastChainTipPrinted = pindexPrev;
1228             }
1229
1230             miningTimer.start();
1231
1232 #ifdef ENABLE_WALLET
1233             CBlockTemplate *ptr = CreateNewBlockWithKey(reservekey, Mining_height, 0);
1234 #else
1235             CBlockTemplate *ptr = CreateNewBlockWithKey();
1236 #endif
1237             if ( ptr == 0 )
1238             {
1239                 static uint32_t counter;
1240                 if ( counter++ < 100 )
1241                     fprintf(stderr,"created illegal block, retry\n");
1242                 continue;
1243             }
1244
1245             unique_ptr<CBlockTemplate> pblocktemplate(ptr);
1246             if (!pblocktemplate.get())
1247             {
1248                 if (GetArg("-mineraddress", "").empty()) {
1249                     LogPrintf("Error in %s miner: Keypool ran out, please call keypoolrefill before restarting the mining thread\n",
1250                               ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO]);
1251                 } else {
1252                     // Should never reach here, because -mineraddress validity is checked in init.cpp
1253                     LogPrintf("Error in %s miner: Invalid %s -mineraddress\n", ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO], ASSETCHAINS_SYMBOL);
1254                 }
1255                 return;
1256             }
1257             CBlock *pblock = &pblocktemplate->block;
1258             if ( ASSETCHAINS_SYMBOL[0] != 0 )
1259             {
1260                 if ( ASSETCHAINS_REWARD[0] == 0 && !ASSETCHAINS_LASTERA )
1261                 {
1262                     if ( pblock->vtx.size() == 1 && pblock->vtx[0].vout.size() == 1 && Mining_height > ASSETCHAINS_MINHEIGHT )
1263                     {
1264                         static uint32_t counter;
1265                         if ( counter++ < 10 )
1266                             fprintf(stderr,"skip generating %s on-demand block, no tx avail\n",ASSETCHAINS_SYMBOL);
1267                         sleep(10);
1268                         continue;
1269                     } else fprintf(stderr,"%s vouts.%d mining.%d vs %d\n",ASSETCHAINS_SYMBOL,(int32_t)pblock->vtx[0].vout.size(),Mining_height,ASSETCHAINS_MINHEIGHT);
1270                 }
1271             }
1272             IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
1273             LogPrintf("Running %s miner with %u transactions in block (%u bytes)\n",ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO],
1274                        pblock->vtx.size(),::GetSerializeSize(*pblock,SER_NETWORK,PROTOCOL_VERSION));
1275             //
1276             // Search
1277             //
1278             uint32_t savebits; int64_t nStart = GetTime();
1279
1280             pblock->nSolution = solnPlaceholder;
1281             savebits = pblock->nBits;
1282             arith_uint256 hashTarget = arith_uint256().SetCompact(pblock->nBits);
1283             arith_uint256 mask(ASSETCHAINS_NONCEMASK[ASSETCHAINS_ALGO]);
1284
1285             Mining_start = 0;
1286
1287             if ( pindexPrev != chainActive.LastTip() )
1288             {
1289                 if (lastChainTipPrinted != chainActive.LastTip())
1290                 {
1291                     lastChainTipPrinted = chainActive.LastTip();
1292                     printf("Block %d added to chain\n", lastChainTipPrinted->GetHeight());
1293                 }
1294                 MilliSleep(250);
1295                 continue;
1296             }
1297
1298             if ( ASSETCHAINS_STAKED != 0 )
1299             {
1300                 int32_t percPoS,z;
1301                 hashTarget = komodo_PoWtarget(&percPoS,hashTarget,Mining_height,ASSETCHAINS_STAKED);
1302                 for (z=31; z>=0; z--)
1303                     fprintf(stderr,"%02x",((uint8_t *)&hashTarget)[z]);
1304                 fprintf(stderr," PoW for staked coin PoS %d%% vs target %d%%\n",percPoS,(int32_t)ASSETCHAINS_STAKED);
1305             }
1306
1307             while (true)
1308             {
1309                 arith_uint256 arNonce = UintToArith256(pblock->nNonce);
1310
1311                 CVerusHashWriter ss = CVerusHashWriter(SER_GETHASH, PROTOCOL_VERSION);
1312                 ss << *((CBlockHeader *)pblock);
1313                 int64_t *extraPtr = ss.xI64p();
1314                 CVerusHash &vh = ss.GetState();
1315                 uint256 hashResult = uint256();
1316                 vh.ClearExtra();
1317                 int64_t i, count = ASSETCHAINS_NONCEMASK[ASSETCHAINS_ALGO] + 1;
1318                 int64_t hashesToGo = ASSETCHAINS_HASHESPERROUND[ASSETCHAINS_ALGO];
1319
1320                 // for speed check NONCEMASK at a time
1321                 for (i = 0; i < count; i++)
1322                 {
1323                     *extraPtr = i;
1324                     vh.ExtraHash((unsigned char *)&hashResult);
1325
1326                     if ( UintToArith256(hashResult) <= hashTarget )
1327                     {
1328                         if (pblock->nSolution.size() != 1344)
1329                         {
1330                             LogPrintf("ERROR: Block solution is not 1344 bytes as it should be");
1331                             sleep(5);
1332                             break;
1333                         }
1334
1335                         SetThreadPriority(THREAD_PRIORITY_NORMAL);
1336
1337                         *((int64_t *)&(pblock->nSolution.data()[pblock->nSolution.size() - 15])) = i;
1338
1339                         int32_t unlockTime = komodo_block_unlocktime(Mining_height);
1340                         int64_t subsidy = (int64_t)(pblock->vtx[0].vout[0].nValue);
1341
1342                         LogPrintf("Using %s algorithm:\n", ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO]);
1343                         LogPrintf("proof-of-work found  \n  hash: %s  \ntarget: %s\n", pblock->GetHash().GetHex(), hashTarget.GetHex());
1344                         printf("Found block %d \n", Mining_height );
1345                         printf("mining reward %.8f %s!\n", (double)subsidy / (double)COIN, ASSETCHAINS_SYMBOL);
1346                         printf("  hash: %s  \ntarget: %s\n", pblock->GetHash().GetHex().c_str(), hashTarget.GetHex().c_str());
1347                         if (unlockTime > Mining_height && subsidy >= ASSETCHAINS_TIMELOCKGTE)
1348                             printf("- timelocked until block %i\n", unlockTime);
1349                         else
1350                             printf("\n");
1351 #ifdef ENABLE_WALLET
1352                         ProcessBlockFound(pblock, *pwallet, reservekey);
1353 #else
1354                         ProcessBlockFound(pblock));
1355 #endif
1356                         SetThreadPriority(THREAD_PRIORITY_LOWEST);
1357                         break;
1358                     }
1359                     // check periodically if we're stale
1360                     if (!--hashesToGo)
1361                     {
1362                         if ( pindexPrev != chainActive.LastTip() )
1363                         {
1364                             if (lastChainTipPrinted != chainActive.LastTip())
1365                             {
1366                                 lastChainTipPrinted = chainActive.LastTip();
1367                                 printf("Block %d added to chain\n", lastChainTipPrinted->GetHeight());
1368                             }
1369                             break;
1370                         }
1371                         hashesToGo = ASSETCHAINS_HASHESPERROUND[ASSETCHAINS_ALGO];
1372                     }
1373                 }
1374
1375                 {
1376                     LOCK(cs_metrics);
1377                     nHashCount += i;
1378                 }
1379
1380                 // Check for stop or if block needs to be rebuilt
1381                 boost::this_thread::interruption_point();
1382
1383                 if (vNodes.empty() && chainparams.MiningRequiresPeers())
1384                 {
1385                     if ( Mining_height > ASSETCHAINS_MINHEIGHT )
1386                     {
1387                         fprintf(stderr,"no nodes, attempting reconnect\n");
1388                         break;
1389                     }
1390                 }
1391
1392                 if (mempool.GetTransactionsUpdated() != nTransactionsUpdatedLast && GetTime() - nStart > 60)
1393                 {
1394                     fprintf(stderr,"timeout, retrying\n");
1395                     break;
1396                 }
1397
1398                 if ( pindexPrev != chainActive.LastTip() )
1399                 {
1400                     if (lastChainTipPrinted != chainActive.LastTip())
1401                     {
1402                         lastChainTipPrinted = chainActive.LastTip();
1403                         printf("Block %d added to chain\n", lastChainTipPrinted->GetHeight());
1404                     }
1405                     break;
1406                 }
1407
1408 #ifdef _WIN32
1409                 printf("%llu mega hashes complete - working\n", (ASSETCHAINS_NONCEMASK[ASSETCHAINS_ALGO] + 1) / 1048576);
1410 #else
1411                 printf("%lu mega hashes complete - working\n", (ASSETCHAINS_NONCEMASK[ASSETCHAINS_ALGO] + 1) / 1048576);
1412 #endif
1413                 break;
1414
1415             }
1416         }
1417     }
1418     catch (const boost::thread_interrupted&)
1419     {
1420         miningTimer.stop();
1421         LogPrintf("%s miner terminated\n", ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO]);
1422         throw;
1423     }
1424     catch (const std::runtime_error &e)
1425     {
1426         miningTimer.stop();
1427         LogPrintf("%s miner runtime error: %s\n", ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO], e.what());
1428         return;
1429     }
1430     miningTimer.stop();
1431 }
1432
1433 #ifdef ENABLE_WALLET
1434 void static BitcoinMiner(CWallet *pwallet)
1435 #else
1436 void static BitcoinMiner()
1437 #endif
1438 {
1439     LogPrintf("KomodoMiner started\n");
1440     SetThreadPriority(THREAD_PRIORITY_LOWEST);
1441     RenameThread("komodo-miner");
1442     const CChainParams& chainparams = Params();
1443
1444 #ifdef ENABLE_WALLET
1445     // Each thread has its own key
1446     CReserveKey reservekey(pwallet);
1447 #endif
1448
1449     // Each thread has its own counter
1450     unsigned int nExtraNonce = 0;
1451
1452     unsigned int n = chainparams.EquihashN();
1453     unsigned int k = chainparams.EquihashK();
1454     uint8_t *script; uint64_t total,checktoshis; int32_t i,j,gpucount=KOMODO_MAXGPUCOUNT,notaryid = -1;
1455     while ( (ASSETCHAIN_INIT == 0 || KOMODO_INITDONE == 0) )
1456     {
1457         sleep(1);
1458         if ( komodo_baseid(ASSETCHAINS_SYMBOL) < 0 )
1459             break;
1460     }
1461     if ( ASSETCHAINS_SYMBOL[0] == 0 )
1462         komodo_chosennotary(&notaryid,chainActive.LastTip()->GetHeight(),NOTARY_PUBKEY33,(uint32_t)chainActive.LastTip()->GetBlockTime());
1463     if ( notaryid != My_notaryid )
1464         My_notaryid = notaryid;
1465     std::string solver;
1466     //if ( notaryid >= 0 || ASSETCHAINS_SYMBOL[0] != 0 )
1467     solver = "tromp";
1468     //else solver = "default";
1469     assert(solver == "tromp" || solver == "default");
1470     LogPrint("pow", "Using Equihash solver \"%s\" with n = %u, k = %u\n", solver, n, k);
1471     if ( ASSETCHAINS_SYMBOL[0] != 0 )
1472         fprintf(stderr,"notaryid.%d Mining.%s with %s\n",notaryid,ASSETCHAINS_SYMBOL,solver.c_str());
1473     std::mutex m_cs;
1474     bool cancelSolver = false;
1475     boost::signals2::connection c = uiInterface.NotifyBlockTip.connect(
1476                                                                        [&m_cs, &cancelSolver](const uint256& hashNewTip) mutable {
1477                                                                            std::lock_guard<std::mutex> lock{m_cs};
1478                                                                            cancelSolver = true;
1479                                                                        }
1480                                                                        );
1481     miningTimer.start();
1482
1483     try {
1484         if ( ASSETCHAINS_SYMBOL[0] != 0 )
1485             fprintf(stderr,"try %s Mining with %s\n",ASSETCHAINS_SYMBOL,solver.c_str());
1486         while (true)
1487         {
1488             if (chainparams.MiningRequiresPeers()) //chainActive.LastTip()->GetHeight() != 235300 &&
1489             {
1490                 //if ( ASSETCHAINS_SEED != 0 && chainActive.LastTip()->GetHeight() < 100 )
1491                 //    break;
1492                 // Busy-wait for the network to come online so we don't waste time mining
1493                 // on an obsolete chain. In regtest mode we expect to fly solo.
1494                 miningTimer.stop();
1495                 do {
1496                     bool fvNodesEmpty;
1497                     {
1498                         //LOCK(cs_vNodes);
1499                         fvNodesEmpty = vNodes.empty();
1500                     }
1501                     if (!fvNodesEmpty )//&& !IsInitialBlockDownload())
1502                         break;
1503                     MilliSleep(15000);
1504                     //fprintf(stderr,"fvNodesEmpty %d IsInitialBlockDownload(%s) %d\n",(int32_t)fvNodesEmpty,ASSETCHAINS_SYMBOL,(int32_t)IsInitialBlockDownload());
1505
1506                 } while (true);
1507                 //fprintf(stderr,"%s Found peers\n",ASSETCHAINS_SYMBOL);
1508                 miningTimer.start();
1509             }
1510             //
1511             // Create new block
1512             //
1513             unsigned int nTransactionsUpdatedLast = mempool.GetTransactionsUpdated();
1514             CBlockIndex* pindexPrev = chainActive.LastTip();
1515             if ( Mining_height != pindexPrev->GetHeight()+1 )
1516             {
1517                 Mining_height = pindexPrev->GetHeight()+1;
1518                 Mining_start = (uint32_t)time(NULL);
1519             }
1520             if ( ASSETCHAINS_SYMBOL[0] != 0 && ASSETCHAINS_STAKED == 0 )
1521             {
1522                 //fprintf(stderr,"%s create new block ht.%d\n",ASSETCHAINS_SYMBOL,Mining_height);
1523                 //sleep(3);
1524             }
1525
1526 #ifdef ENABLE_WALLET
1527             // notaries always default to staking
1528             CBlockTemplate *ptr = CreateNewBlockWithKey(reservekey, pindexPrev->GetHeight()+1, gpucount, ASSETCHAINS_STAKED != 0 && GetArg("-genproclimit", 0) == 0);
1529 #else
1530             CBlockTemplate *ptr = CreateNewBlockWithKey();
1531 #endif
1532             if ( ptr == 0 )
1533             {
1534                 static uint32_t counter;
1535                 if ( counter++ < 100 && ASSETCHAINS_STAKED == 0 )
1536                     fprintf(stderr,"created illegal block, retry\n");
1537                 sleep(1);
1538                 continue;
1539             }
1540             //fprintf(stderr,"get template\n");
1541             unique_ptr<CBlockTemplate> pblocktemplate(ptr);
1542             if (!pblocktemplate.get())
1543             {
1544                 if (GetArg("-mineraddress", "").empty()) {
1545                     LogPrintf("Error in KomodoMiner: Keypool ran out, please call keypoolrefill before restarting the mining thread\n");
1546                 } else {
1547                     // Should never reach here, because -mineraddress validity is checked in init.cpp
1548                     LogPrintf("Error in KomodoMiner: Invalid -mineraddress\n");
1549                 }
1550                 return;
1551             }
1552             CBlock *pblock = &pblocktemplate->block;
1553             if ( ASSETCHAINS_SYMBOL[0] != 0 )
1554             {
1555                 if ( ASSETCHAINS_REWARD[0] == 0 && !ASSETCHAINS_LASTERA )
1556                 {
1557                     if ( pblock->vtx.size() == 1 && pblock->vtx[0].vout.size() == 1 && Mining_height > ASSETCHAINS_MINHEIGHT )
1558                     {
1559                         static uint32_t counter;
1560                         if ( counter++ < 10 )
1561                             fprintf(stderr,"skip generating %s on-demand block, no tx avail\n",ASSETCHAINS_SYMBOL);
1562                         sleep(10);
1563                         continue;
1564                     } else fprintf(stderr,"%s vouts.%d mining.%d vs %d\n",ASSETCHAINS_SYMBOL,(int32_t)pblock->vtx[0].vout.size(),Mining_height,ASSETCHAINS_MINHEIGHT);
1565                 }
1566             }
1567             IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
1568             //fprintf(stderr,"Running KomodoMiner.%s with %u transactions in block\n",solver.c_str(),(int32_t)pblock->vtx.size());
1569             LogPrintf("Running KomodoMiner.%s with %u transactions in block (%u bytes)\n",solver.c_str(),pblock->vtx.size(),::GetSerializeSize(*pblock,SER_NETWORK,PROTOCOL_VERSION));
1570             //
1571             // Search
1572             //
1573             uint8_t pubkeys[66][33]; arith_uint256 bnMaxPoSdiff; uint32_t blocktimes[66]; int mids[256],nonzpkeys,i,j,externalflag; uint32_t savebits; int64_t nStart = GetTime();
1574             pblock->nBits         = GetNextWorkRequired(pindexPrev, pblock, Params().GetConsensus());
1575             savebits = pblock->nBits;
1576             HASHTarget = arith_uint256().SetCompact(savebits);
1577             roundrobin_delay = ROUNDROBIN_DELAY;
1578             if ( ASSETCHAINS_SYMBOL[0] == 0 && notaryid >= 0 )
1579             {
1580                 j = 65;
1581                 if ( (Mining_height >= 235300 && Mining_height < 236000) || (Mining_height % KOMODO_ELECTION_GAP) > 64 || (Mining_height % KOMODO_ELECTION_GAP) == 0 || Mining_height > 1000000 )
1582                 {
1583                     int32_t dispflag = 0;
1584                     if ( notaryid <= 3 || notaryid == 32 || (notaryid >= 43 && notaryid <= 45) &&notaryid == 51 || notaryid == 52 || notaryid == 56 || notaryid == 57 )
1585                         dispflag = 1;
1586                     komodo_eligiblenotary(pubkeys,mids,blocktimes,&nonzpkeys,pindexPrev->GetHeight());
1587                     if ( nonzpkeys > 0 )
1588                     {
1589                         for (i=0; i<33; i++)
1590                             if( pubkeys[0][i] != 0 )
1591                                 break;
1592                         if ( i == 33 )
1593                             externalflag = 1;
1594                         else externalflag = 0;
1595                         if ( IS_KOMODO_NOTARY != 0 )
1596                         {
1597                             for (i=1; i<66; i++)
1598                                 if ( memcmp(pubkeys[i],pubkeys[0],33) == 0 )
1599                                     break;
1600                             if ( externalflag == 0 && i != 66 && mids[i] >= 0 )
1601                                 printf("VIOLATION at %d, notaryid.%d\n",i,mids[i]);
1602                             for (j=gpucount=0; j<65; j++)
1603                             {
1604                                 if ( dispflag != 0 )
1605                                 {
1606                                     if ( mids[j] >= 0 )
1607                                         fprintf(stderr,"%d ",mids[j]);
1608                                     else fprintf(stderr,"GPU ");
1609                                 }
1610                                 if ( mids[j] == -1 )
1611                                     gpucount++;
1612                             }
1613                             if ( dispflag != 0 )
1614                                 fprintf(stderr," <- prev minerids from ht.%d notary.%d gpucount.%d %.2f%% t.%u\n",pindexPrev->GetHeight(),notaryid,gpucount,100.*(double)gpucount/j,(uint32_t)time(NULL));
1615                         }
1616                         for (j=0; j<65; j++)
1617                             if ( mids[j] == notaryid )
1618                                 break;
1619                         if ( j == 65 )
1620                             KOMODO_LASTMINED = 0;
1621                     } else fprintf(stderr,"no nonz pubkeys\n");
1622                     if ( (Mining_height >= 235300 && Mining_height < 236000) || (j == 65 && Mining_height > KOMODO_MAYBEMINED+1 && Mining_height > KOMODO_LASTMINED+64) )
1623                     {
1624                         HASHTarget = arith_uint256().SetCompact(KOMODO_MINDIFF_NBITS);
1625                         fprintf(stderr,"I am the chosen one for %s ht.%d\n",ASSETCHAINS_SYMBOL,pindexPrev->GetHeight()+1);
1626                     } //else fprintf(stderr,"duplicate at j.%d\n",j);
1627                 } else Mining_start = 0;
1628             } else Mining_start = 0;
1629             if ( ASSETCHAINS_STAKED != 0 )
1630             {
1631                 int32_t percPoS,z; bool fNegative,fOverflow;
1632                 HASHTarget_POW = komodo_PoWtarget(&percPoS,HASHTarget,Mining_height,ASSETCHAINS_STAKED);
1633                 HASHTarget.SetCompact(KOMODO_MINDIFF_NBITS,&fNegative,&fOverflow);
1634                 if ( ASSETCHAINS_STAKED < 100 )
1635                 {
1636                     for (z=31; z>=0; z--)
1637                         fprintf(stderr,"%02x",((uint8_t *)&HASHTarget_POW)[z]);
1638                     fprintf(stderr," PoW for staked coin PoS %d%% vs target %d%%\n",percPoS,(int32_t)ASSETCHAINS_STAKED);
1639                 }
1640             }
1641             while (true)
1642             {
1643                 if ( KOMODO_INSYNC == 0 )
1644                 {
1645                     fprintf(stderr,"Mining when blockchain might not be in sync longest.%d vs %d\n",KOMODO_LONGESTCHAIN,Mining_height);
1646                     if ( KOMODO_LONGESTCHAIN != 0 && Mining_height >= KOMODO_LONGESTCHAIN )
1647                         KOMODO_INSYNC = 1;
1648                     sleep(3);
1649                 }
1650                 // Hash state
1651                 KOMODO_CHOSEN_ONE = 0;
1652
1653                 crypto_generichash_blake2b_state state;
1654                 EhInitialiseState(n, k, state);
1655                 // I = the block header minus nonce and solution.
1656                 CEquihashInput I{*pblock};
1657                 CDataStream ss(SER_NETWORK, PROTOCOL_VERSION);
1658                 ss << I;
1659                 // H(I||...
1660                 crypto_generichash_blake2b_update(&state, (unsigned char*)&ss[0], ss.size());
1661                 // H(I||V||...
1662                 crypto_generichash_blake2b_state curr_state;
1663                 curr_state = state;
1664                 crypto_generichash_blake2b_update(&curr_state,pblock->nNonce.begin(),pblock->nNonce.size());
1665                 // (x_1, x_2, ...) = A(I, V, n, k)
1666                 LogPrint("pow", "Running Equihash solver \"%s\" with nNonce = %s\n",solver, pblock->nNonce.ToString());
1667                 arith_uint256 hashTarget;
1668                 if ( KOMODO_MININGTHREADS > 0 && ASSETCHAINS_STAKED > 0 && ASSETCHAINS_STAKED < 100 && Mining_height > 10 )
1669                     hashTarget = HASHTarget_POW;
1670                 else hashTarget = HASHTarget;
1671                 std::function<bool(std::vector<unsigned char>)> validBlock =
1672 #ifdef ENABLE_WALLET
1673                 [&pblock, &hashTarget, &pwallet, &reservekey, &m_cs, &cancelSolver, &chainparams]
1674 #else
1675                 [&pblock, &hashTarget, &m_cs, &cancelSolver, &chainparams]
1676 #endif
1677                 (std::vector<unsigned char> soln) {
1678                     int32_t z; arith_uint256 h; CBlock B;
1679                     // Write the solution to the hash and compute the result.
1680                     LogPrint("pow", "- Checking solution against target\n");
1681                     pblock->nSolution = soln;
1682                     solutionTargetChecks.increment();
1683                     B = *pblock;
1684                     h = UintToArith256(B.GetHash());
1685                     /*for (z=31; z>=16; z--)
1686                         fprintf(stderr,"%02x",((uint8_t *)&h)[z]);
1687                     fprintf(stderr," mined ");
1688                     for (z=31; z>=16; z--)
1689                         fprintf(stderr,"%02x",((uint8_t *)&HASHTarget)[z]);
1690                     fprintf(stderr," hashTarget ");
1691                     for (z=31; z>=16; z--)
1692                         fprintf(stderr,"%02x",((uint8_t *)&HASHTarget_POW)[z]);
1693                     fprintf(stderr," POW\n");*/
1694                     if ( h > hashTarget )
1695                     {
1696                         //if ( ASSETCHAINS_STAKED != 0 && KOMODO_MININGTHREADS == 0 )
1697                         //    sleep(1);
1698                         return false;
1699                     }
1700                     if ( IS_KOMODO_NOTARY != 0 && B.nTime > GetAdjustedTime() )
1701                     {
1702                         //fprintf(stderr,"need to wait %d seconds to submit block\n",(int32_t)(B.nTime - GetAdjustedTime()));
1703                         while ( GetAdjustedTime() < B.nTime-2 )
1704                         {
1705                             sleep(1);
1706                             if ( chainActive.LastTip()->GetHeight() >= Mining_height )
1707                             {
1708                                 fprintf(stderr,"new block arrived\n");
1709                                 return(false);
1710                             }
1711                         }
1712                     }
1713                     if ( ASSETCHAINS_STAKED == 0 )
1714                     {
1715                         if ( IS_KOMODO_NOTARY != 0 )
1716                         {
1717                             int32_t r;
1718                             if ( (r= ((Mining_height + NOTARY_PUBKEY33[16]) % 64) / 8) > 0 )
1719                                 MilliSleep((rand() % (r * 1000)) + 1000);
1720                         }
1721                     }
1722                     else
1723                     {
1724                         while ( B.nTime-57 > GetAdjustedTime() )
1725                         {
1726                             sleep(1);
1727                             if ( chainActive.LastTip()->GetHeight() >= Mining_height )
1728                                 return(false);
1729                         }
1730                         uint256 tmp = B.GetHash();
1731                         int32_t z; for (z=31; z>=0; z--)
1732                             fprintf(stderr,"%02x",((uint8_t *)&tmp)[z]);
1733                         fprintf(stderr," mined %s block %d!\n",ASSETCHAINS_SYMBOL,Mining_height);
1734                     }
1735                     CValidationState state;
1736                     if ( !TestBlockValidity(state,B, chainActive.LastTip(), true, false))
1737                     {
1738                         h = UintToArith256(B.GetHash());
1739                         for (z=31; z>=0; z--)
1740                             fprintf(stderr,"%02x",((uint8_t *)&h)[z]);
1741                         fprintf(stderr," Invalid block mined, try again\n");
1742                         return(false);
1743                     }
1744                     KOMODO_CHOSEN_ONE = 1;
1745                     // Found a solution
1746                     SetThreadPriority(THREAD_PRIORITY_NORMAL);
1747                     LogPrintf("KomodoMiner:\n");
1748                     LogPrintf("proof-of-work found  \n  hash: %s  \ntarget: %s\n", B.GetHash().GetHex(), HASHTarget.GetHex());
1749 #ifdef ENABLE_WALLET
1750                     if (ProcessBlockFound(&B, *pwallet, reservekey)) {
1751 #else
1752                         if (ProcessBlockFound(&B)) {
1753 #endif
1754                             // Ignore chain updates caused by us
1755                             std::lock_guard<std::mutex> lock{m_cs};
1756                             cancelSolver = false;
1757                         }
1758                         KOMODO_CHOSEN_ONE = 0;
1759                         SetThreadPriority(THREAD_PRIORITY_LOWEST);
1760                         // In regression test mode, stop mining after a block is found.
1761                         if (chainparams.MineBlocksOnDemand()) {
1762                             // Increment here because throwing skips the call below
1763                             ehSolverRuns.increment();
1764                             throw boost::thread_interrupted();
1765                         }
1766                         return true;
1767                     };
1768                     std::function<bool(EhSolverCancelCheck)> cancelled = [&m_cs, &cancelSolver](EhSolverCancelCheck pos) {
1769                         std::lock_guard<std::mutex> lock{m_cs};
1770                         return cancelSolver;
1771                     };
1772
1773                     // TODO: factor this out into a function with the same API for each solver.
1774                     if (solver == "tromp" ) { //&& notaryid >= 0 ) {
1775                         // Create solver and initialize it.
1776                         equi eq(1);
1777                         eq.setstate(&curr_state);
1778
1779                         // Initialization done, start algo driver.
1780                         eq.digit0(0);
1781                         eq.xfull = eq.bfull = eq.hfull = 0;
1782                         eq.showbsizes(0);
1783                         for (u32 r = 1; r < WK; r++) {
1784                             (r&1) ? eq.digitodd(r, 0) : eq.digiteven(r, 0);
1785                             eq.xfull = eq.bfull = eq.hfull = 0;
1786                             eq.showbsizes(r);
1787                         }
1788                         eq.digitK(0);
1789                         ehSolverRuns.increment();
1790
1791                         // Convert solution indices to byte array (decompress) and pass it to validBlock method.
1792                         for (size_t s = 0; s < eq.nsols; s++) {
1793                             LogPrint("pow", "Checking solution %d\n", s+1);
1794                             std::vector<eh_index> index_vector(PROOFSIZE);
1795                             for (size_t i = 0; i < PROOFSIZE; i++) {
1796                                 index_vector[i] = eq.sols[s][i];
1797                             }
1798                             std::vector<unsigned char> sol_char = GetMinimalFromIndices(index_vector, DIGITBITS);
1799
1800                             if (validBlock(sol_char)) {
1801                                 // If we find a POW solution, do not try other solutions
1802                                 // because they become invalid as we created a new block in blockchain.
1803                                 break;
1804                             }
1805                         }
1806                     } else {
1807                         try {
1808                             // If we find a valid block, we rebuild
1809                             bool found = EhOptimisedSolve(n, k, curr_state, validBlock, cancelled);
1810                             ehSolverRuns.increment();
1811                             if (found) {
1812                                 int32_t i; uint256 hash = pblock->GetHash();
1813                                 for (i=0; i<32; i++)
1814                                     fprintf(stderr,"%02x",((uint8_t *)&hash)[i]);
1815                                 fprintf(stderr," <- %s Block found %d\n",ASSETCHAINS_SYMBOL,Mining_height);
1816                                 FOUND_BLOCK = 1;
1817                                 KOMODO_MAYBEMINED = Mining_height;
1818                                 break;
1819                             }
1820                         } catch (EhSolverCancelledException&) {
1821                             LogPrint("pow", "Equihash solver cancelled\n");
1822                             std::lock_guard<std::mutex> lock{m_cs};
1823                             cancelSolver = false;
1824                         }
1825                     }
1826
1827                     // Check for stop or if block needs to be rebuilt
1828                     boost::this_thread::interruption_point();
1829                     // Regtest mode doesn't require peers
1830                     if ( FOUND_BLOCK != 0 )
1831                     {
1832                         FOUND_BLOCK = 0;
1833                         fprintf(stderr,"FOUND_BLOCK!\n");
1834                         //sleep(2000);
1835                     }
1836                     if (vNodes.empty() && chainparams.MiningRequiresPeers())
1837                     {
1838                         if ( ASSETCHAINS_SYMBOL[0] == 0 || Mining_height > ASSETCHAINS_MINHEIGHT )
1839                         {
1840                             fprintf(stderr,"no nodes, break\n");
1841                             break;
1842                         }
1843                     }
1844                     if ((UintToArith256(pblock->nNonce) & 0xffff) == 0xffff)
1845                     {
1846                         //if ( 0 && ASSETCHAINS_SYMBOL[0] != 0 )
1847                         fprintf(stderr,"0xffff, break\n");
1848                         break;
1849                     }
1850                     if (mempool.GetTransactionsUpdated() != nTransactionsUpdatedLast && GetTime() - nStart > 60)
1851                     {
1852                         if ( 0 && ASSETCHAINS_SYMBOL[0] != 0 )
1853                             fprintf(stderr,"timeout, break\n");
1854                         break;
1855                     }
1856                     if ( pindexPrev != chainActive.LastTip() )
1857                     {
1858                         if ( 0 && ASSETCHAINS_SYMBOL[0] != 0 )
1859                             fprintf(stderr,"Tip advanced, break\n");
1860                         break;
1861                     }
1862                     // Update nNonce and nTime
1863                     pblock->nNonce = ArithToUint256(UintToArith256(pblock->nNonce) + 1);
1864                     pblock->nBits = savebits;
1865                     /*if ( NOTARY_PUBKEY33[0] == 0 )
1866                     {
1867                         int32_t percPoS;
1868                         UpdateTime(pblock, consensusParams, pindexPrev);
1869                         if (consensusParams.fPowAllowMinDifficultyBlocks)
1870                         {
1871                             // Changing pblock->nTime can change work required on testnet:
1872                             HASHTarget.SetCompact(pblock->nBits);
1873                             HASHTarget_POW = komodo_PoWtarget(&percPoS,HASHTarget,Mining_height,ASSETCHAINS_STAKED);
1874                         }
1875                     }*/
1876                 }
1877             }
1878         }
1879         catch (const boost::thread_interrupted&)
1880         {
1881             miningTimer.stop();
1882             c.disconnect();
1883             LogPrintf("KomodoMiner terminated\n");
1884             throw;
1885         }
1886         catch (const std::runtime_error &e)
1887         {
1888             miningTimer.stop();
1889             c.disconnect();
1890             LogPrintf("KomodoMiner runtime error: %s\n", e.what());
1891             return;
1892         }
1893         miningTimer.stop();
1894         c.disconnect();
1895     }
1896
1897 #ifdef ENABLE_WALLET
1898     void GenerateBitcoins(bool fGenerate, CWallet* pwallet, int nThreads)
1899 #else
1900     void GenerateBitcoins(bool fGenerate, int nThreads)
1901 #endif
1902     {
1903         // if we are supposed to catch stake cheaters, there must be a valid sapling parameter, we need it at
1904         // initialization, and this is the first time we can get it. store the Sapling address here
1905         extern boost::optional<libzcash::SaplingPaymentAddress> cheatCatcher;
1906         extern std::string VERUS_CHEATCATCHER;
1907         libzcash::PaymentAddress addr = DecodePaymentAddress(VERUS_CHEATCATCHER);
1908         if (VERUS_CHEATCATCHER.size() > 0 && IsValidPaymentAddress(addr))
1909         {
1910             cheatCatcher = boost::get<libzcash::SaplingPaymentAddress>(addr);
1911         }
1912         else
1913         {
1914             if (VERUS_CHEATCATCHER.size() > 0)
1915                 fprintf(stderr, "-cheatcatcher parameter is invalid Sapling payment address\n");
1916         }
1917
1918         static boost::thread_group* minerThreads = NULL;
1919
1920         if (nThreads < 0)
1921             nThreads = GetNumCores();
1922
1923         if (minerThreads != NULL)
1924         {
1925             minerThreads->interrupt_all();
1926             delete minerThreads;
1927             minerThreads = NULL;
1928         }
1929
1930         //fprintf(stderr,"nThreads.%d fGenerate.%d\n",(int32_t)nThreads,fGenerate);
1931         if ( nThreads == 0 && ASSETCHAINS_STAKED )
1932             nThreads = 1;
1933
1934         if ((nThreads == 0 || !fGenerate) && (VERUS_MINTBLOCKS == 0 || pwallet == NULL))
1935             return;
1936
1937         minerThreads = new boost::thread_group();
1938
1939 #ifdef ENABLE_WALLET
1940         if (ASSETCHAINS_LWMAPOS != 0 && VERUS_MINTBLOCKS)
1941         {
1942             minerThreads->create_thread(boost::bind(&VerusStaker, pwallet));
1943         }
1944 #endif
1945
1946         for (int i = 0; i < nThreads; i++) {
1947
1948 #ifdef ENABLE_WALLET
1949             if (ASSETCHAINS_ALGO == ASSETCHAINS_EQUIHASH)
1950                 minerThreads->create_thread(boost::bind(&BitcoinMiner, pwallet));
1951             else
1952                 minerThreads->create_thread(boost::bind(&BitcoinMiner_noeq, pwallet));
1953 #else
1954             if (ASSETCHAINS_ALGO == ASSETCHAINS_EQUIHASH)
1955                 minerThreads->create_thread(&BitcoinMiner);
1956             else
1957                 minerThreads->create_thread(&BitcoinMiner_noeq);
1958 #endif
1959         }
1960     }
1961
1962 #endif // ENABLE_MINING