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                                 if (cheatSpend)
 307                                 {
 308                                     cheatTx = boost::get<CTransaction>(cheatSpend);
 309                                     unsigned int nTxSize = ::GetSerializeSize(cheatTx, SER_NETWORK, PROTOCOL_VERSION);
 310                                     double dPriority = cheatTx.ComputePriority(dPriority, nTxSize);
 311                                     CFeeRate feeRate(DEFAULT_TRANSACTION_MAXFEE, nTxSize);
 312                                     vecPriority.push_back(TxPriority(dPriority, feeRate, &cheatTx));
 313                                 }
 314                             }
 315                         }
 316                     }
 317                 }
 318             }
 319         }
 320
 321         if (cheatSpend)
 322         {
 323             std::list<CTransaction> removed;
 324             mempool.removeConflicts(cheatSpend.value(), removed);
 325             printf("Found cheating stake! Adding cheat spend for %.8f at block #%d, coinbase tx\n%s\n",
 326                 (double)cb.GetValueOut() / (double)COIN, nHeight, cheatSpend.value().vin[0].prevout.hash.GetHex().c_str());
 327         }
 328
 329         // now add transactions from the mem pool
 330         for (CTxMemPool::indexed_transaction_set::iterator mi = mempool.mapTx.begin();
 331              mi != mempool.mapTx.end(); ++mi)
 332         {
 333             const CTransaction& tx = mi->GetTx();
 334
 335             int64_t nLockTimeCutoff = (STANDARD_LOCKTIME_VERIFY_FLAGS & LOCKTIME_MEDIAN_TIME_PAST)
 336             ? nMedianTimePast
 337             : pblock->GetBlockTime();
 338
 339             if (tx.IsCoinBase() || !IsFinalTx(tx, nHeight, nLockTimeCutoff) || IsExpiredTx(tx, nHeight))
 340             {
 341                 //fprintf(stderr,"coinbase.%d finaltx.%d expired.%d\n",tx.IsCoinBase(),IsFinalTx(tx, nHeight, nLockTimeCutoff),IsExpiredTx(tx, nHeight));
 342                 continue;
 343             }
 344
 345             if ( ASSETCHAINS_SYMBOL[0] == 0 && komodo_validate_interest(tx,nHeight,(uint32_t)pblock->nTime,0) < 0 )
 346             {
 347                 //fprintf(stderr,"CreateNewBlock: komodo_validate_interest failure nHeight.%d nTime.%u vs locktime.%u\n",nHeight,(uint32_t)pblock->nTime,(uint32_t)tx.nLockTime);
 348                 continue;
 349             }
 350
 351             COrphan* porphan = NULL;
 352             double dPriority = 0;
 353             CAmount nTotalIn = 0;
 354             bool fMissingInputs = false;
 355             if (tx.IsCoinImport())
 356             {
 357                 CAmount nValueIn = GetCoinImportValue(tx);
 358                 nTotalIn += nValueIn;
 359                 dPriority += (double)nValueIn * 1000;  // flat multiplier
 360             } else {
 361                 BOOST_FOREACH(const CTxIn& txin, tx.vin)
 362                 {
 363                     // Read prev transaction
 364                     if (!view.HaveCoins(txin.prevout.hash))
 365                     {
 366                         // This should never happen; all transactions in the memory
 367                         // pool should connect to either transactions in the chain
 368                         // or other transactions in the memory pool.
 369                         if (!mempool.mapTx.count(txin.prevout.hash))
 370                         {
 371                             LogPrintf("ERROR: mempool transaction missing input\n");
 372                             if (fDebug) assert("mempool transaction missing input" == 0);
 373                             fMissingInputs = true;
 374                             if (porphan)
 375                                 vOrphan.pop_back();
 376                             break;
 377                         }
 378
 379                         // Has to wait for dependencies
 380                         if (!porphan)
 381                         {
 382                             // Use list for automatic deletion
 383                             vOrphan.push_back(COrphan(&tx));
 384                             porphan = &vOrphan.back();
 385                         }
 386                         mapDependers[txin.prevout.hash].push_back(porphan);
 387                         porphan->setDependsOn.insert(txin.prevout.hash);
 388                         nTotalIn += mempool.mapTx.find(txin.prevout.hash)->GetTx().vout[txin.prevout.n].nValue;
 389                         continue;
 390                     }
 391                     const CCoins* coins = view.AccessCoins(txin.prevout.hash);
 392                     assert(coins);
 393
 394                     CAmount nValueIn = coins->vout[txin.prevout.n].nValue;
 395                     nTotalIn += nValueIn;
 396
 397                     int nConf = nHeight - coins->nHeight;
 398
 399                     dPriority += (double)nValueIn * nConf;
 400                 }
 401                 nTotalIn += tx.GetShieldedValueIn();
 402             }
 403
 404             if (fMissingInputs) continue;
 405
 406             // Priority is sum(valuein * age) / modified_txsize
 407             unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION);
 408             dPriority = tx.ComputePriority(dPriority, nTxSize);
 409
 410             uint256 hash = tx.GetHash();
 411             mempool.ApplyDeltas(hash, dPriority, nTotalIn);
 412
 413             CFeeRate feeRate(nTotalIn-tx.GetValueOut(), nTxSize);
 414
 415             if (porphan)
 416             {
 417                 porphan->dPriority = dPriority;
 418                 porphan->feeRate = feeRate;
 419             }
 420             else
 421                 vecPriority.push_back(TxPriority(dPriority, feeRate, &(mi->GetTx())));
 422         }
 423
 424         // Collect transactions into block
 425         uint64_t nBlockSize = 1000;
 426         uint64_t nBlockTx = 0;
 427         int64_t interest;
 428         int nBlockSigOps = 100;
 429         bool fSortedByFee = (nBlockPrioritySize <= 0);
 430
 431         TxPriorityCompare comparer(fSortedByFee);
 432         std::make_heap(vecPriority.begin(), vecPriority.end(), comparer);
 433
 434         while (!vecPriority.empty())
 435         {
 436             // Take highest priority transaction off the priority queue:
 437             double dPriority = vecPriority.front().get<0>();
 438             CFeeRate feeRate = vecPriority.front().get<1>();
 439             const CTransaction& tx = *(vecPriority.front().get<2>());
 440
 441             std::pop_heap(vecPriority.begin(), vecPriority.end(), comparer);
 442             vecPriority.pop_back();
 443
 444             // Size limits
 445             unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION);
 446             if (nBlockSize + nTxSize >= nBlockMaxSize-512) // room for extra autotx
 447             {
 448                 //fprintf(stderr,"nBlockSize %d + %d nTxSize >= %d nBlockMaxSize\n",(int32_t)nBlockSize,(int32_t)nTxSize,(int32_t)nBlockMaxSize);
 449                 continue;
 450             }
 451
 452             // Legacy limits on sigOps:
 453             unsigned int nTxSigOps = GetLegacySigOpCount(tx);
 454             if (nBlockSigOps + nTxSigOps >= MAX_BLOCK_SIGOPS-1)
 455             {
 456                 //fprintf(stderr,"A nBlockSigOps %d + %d nTxSigOps >= %d MAX_BLOCK_SIGOPS-1\n",(int32_t)nBlockSigOps,(int32_t)nTxSigOps,(int32_t)MAX_BLOCK_SIGOPS);
 457                 continue;
 458             }
 459             // Skip free transactions if we're past the minimum block size:
 460             const uint256& hash = tx.GetHash();
 461             double dPriorityDelta = 0;
 462             CAmount nFeeDelta = 0;
 463             mempool.ApplyDeltas(hash, dPriorityDelta, nFeeDelta);
 464             if (fSortedByFee && (dPriorityDelta <= 0) && (nFeeDelta <= 0) && (feeRate < ::minRelayTxFee) && (nBlockSize + nTxSize >= nBlockMinSize))
 465             {
 466                 //fprintf(stderr,"fee rate skip\n");
 467                 continue;
 468             }
 469             // Prioritise by fee once past the priority size or we run out of high-priority
 470             // transactions:
 471             if (!fSortedByFee &&
 472                 ((nBlockSize + nTxSize >= nBlockPrioritySize) || !AllowFree(dPriority)))
 473             {
 474                 fSortedByFee = true;
 475                 comparer = TxPriorityCompare(fSortedByFee);
 476                 std::make_heap(vecPriority.begin(), vecPriority.end(), comparer);
 477             }
 478
 479             if (!view.HaveInputs(tx))
 480             {
 481                 //fprintf(stderr,"dont have inputs\n");
 482                 continue;
 483             }
 484             CAmount nTxFees = view.GetValueIn(chainActive.LastTip()->GetHeight(),&interest,tx,chainActive.LastTip()->nTime)-tx.GetValueOut();
 485
 486             nTxSigOps += GetP2SHSigOpCount(tx, view);
 487             if (nBlockSigOps + nTxSigOps >= MAX_BLOCK_SIGOPS-1)
 488             {
 489                 //fprintf(stderr,"B nBlockSigOps %d + %d nTxSigOps >= %d MAX_BLOCK_SIGOPS-1\n",(int32_t)nBlockSigOps,(int32_t)nTxSigOps,(int32_t)MAX_BLOCK_SIGOPS);
 490                 continue;
 491             }
 492             // Note that flags: we don't want to set mempool/IsStandard()
 493             // policy here, but we still have to ensure that the block we
 494             // create only contains transactions that are valid in new blocks.
 495             CValidationState state;
 496             PrecomputedTransactionData txdata(tx);
 497             if (!ContextualCheckInputs(tx, state, view, true, MANDATORY_SCRIPT_VERIFY_FLAGS, true, txdata, Params().GetConsensus(), consensusBranchId))
 498             {
 499                 //fprintf(stderr,"context failure\n");
 500                 continue;
 501             }
 502             UpdateCoins(tx, view, nHeight);
 503
 504             BOOST_FOREACH(const OutputDescription &outDescription, tx.vShieldedOutput) {
 505                 sapling_tree.append(outDescription.cm);
 506             }
 507
 508             // Added
 509             pblock->vtx.push_back(tx);
 510             pblocktemplate->vTxFees.push_back(nTxFees);
 511             pblocktemplate->vTxSigOps.push_back(nTxSigOps);
 512             nBlockSize += nTxSize;
 513             ++nBlockTx;
 514             nBlockSigOps += nTxSigOps;
 515             nFees += nTxFees;
 516
 517             if (fPrintPriority)
 518             {
 519                 LogPrintf("priority %.1f fee %s txid %s\n",dPriority, feeRate.ToString(), tx.GetHash().ToString());
 520             }
 521
 522             // Add transactions that depend on this one to the priority queue
 523             if (mapDependers.count(hash))
 524             {
 525                 BOOST_FOREACH(COrphan* porphan, mapDependers[hash])
 526                 {
 527                     if (!porphan->setDependsOn.empty())
 528                     {
 529                         porphan->setDependsOn.erase(hash);
 530                         if (porphan->setDependsOn.empty())
 531                         {
 532                             vecPriority.push_back(TxPriority(porphan->dPriority, porphan->feeRate, porphan->ptx));
 533                             std::push_heap(vecPriority.begin(), vecPriority.end(), comparer);
 534                         }
 535                     }
 536                 }
 537             }
 538         }
 539
 540         nLastBlockTx = nBlockTx;
 541         nLastBlockSize = nBlockSize;
 542         blocktime = 1 + std::max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
 543         //pblock->nTime = blocktime + 1;
 544         pblock->nBits = GetNextWorkRequired(pindexPrev, pblock, Params().GetConsensus());
 545
 546         int32_t stakeHeight = chainActive.Height() + 1;
 547
 548         //LogPrintf("CreateNewBlock(): total size %u blocktime.%u nBits.%08x\n", nBlockSize,blocktime,pblock->nBits);
 549         if ( ASSETCHAINS_SYMBOL[0] != 0 && isStake )
 550         {
 551             uint64_t txfees,utxovalue; uint32_t txtime; uint256 utxotxid; int32_t i,siglen,numsigs,utxovout; uint8_t utxosig[128],*ptr;
 552             CMutableTransaction txStaked = CreateNewContextualCMutableTransaction(Params().GetConsensus(), stakeHeight);
 553
 554             //if ( blocktime > pindexPrev->GetMedianTimePast()+60 )
 555             //    blocktime = pindexPrev->GetMedianTimePast() + 60;
 556             if (ASSETCHAINS_LWMAPOS != 0)
 557             {
 558                 uint32_t nBitsPOS;
 559                 arith_uint256 posHash;
 560
 561                 siglen = verus_staked(pblock, txStaked, nBitsPOS, posHash, utxosig, pk);
 562                 blocktime = GetAdjustedTime();
 563
 564                 // change the scriptPubKeyIn to the same output script exactly as the staking transaction
 565                 if (siglen > 0)
 566                     scriptPubKeyIn = CScript(txStaked.vout[0].scriptPubKey);
 567             }
 568             else
 569             {
 570                 siglen = komodo_staked(txStaked, pblock->nBits, &blocktime, &txtime, &utxotxid, &utxovout, &utxovalue, utxosig);
 571             }
 572
 573             if ( siglen > 0 )
 574             {
 575                 CAmount txfees;
 576
 577                 // after Sapling, stake transactions have a fee, but it is recovered in the reward
 578                 // this ensures that a rebroadcast goes through quickly to begin staking again
 579                 txfees = sapling ? DEFAULT_STAKE_TXFEE : 0;
 580
 581                 pblock->vtx.push_back(txStaked);
 582                 pblocktemplate->vTxFees.push_back(txfees);
 583                 pblocktemplate->vTxSigOps.push_back(GetLegacySigOpCount(txStaked));
 584                 nFees += txfees;
 585                 pblock->nTime = blocktime;
 586                 //printf("staking PoS ht.%d t%u lag.%u\n",(int32_t)chainActive.LastTip()->GetHeight()+1,blocktime,(uint32_t)(GetAdjustedTime() - (blocktime-13)));
 587             } else return(0); //fprintf(stderr,"no utxos eligible for staking\n");
 588         }
 589
 590         // Create coinbase tx
 591         CMutableTransaction txNew = CreateNewContextualCMutableTransaction(consensusParams, nHeight);
 592         txNew.vin.resize(1);
 593         txNew.vin[0].prevout.SetNull();
 594         txNew.vin[0].scriptSig = CScript() << nHeight << OP_0;
 595
 596         txNew.vout.resize(1);
 597         txNew.vout[0].scriptPubKey = scriptPubKeyIn;
 598         txNew.vout[0].nValue = GetBlockSubsidy(nHeight,consensusParams) + nFees;
 599
 600         // once we get to Sapling, enable CC StakeGuard for stake transactions
 601         if (isStake && sapling)
 602         {
 603             // if there is a specific destination, use it
 604             CTransaction stakeTx = pblock->vtx[pblock->vtx.size() - 1];
 605             CStakeParams p;
 606             if (ValidateStakeTransaction(stakeTx, p, false))
 607             {
 608                 if (!p.pk.IsValid() || !MakeGuardedOutput(txNew.vout[0].nValue, p.pk, stakeTx, txNew.vout[0]))
 609                 {
 610                     fprintf(stderr,"CreateNewBlock: failed to make GuardedOutput on staking coinbase\n");
 611                     return 0;
 612                 }
 613             }
 614             else
 615             {
 616                 fprintf(stderr,"CreateNewBlock: invalid stake transaction\n");
 617                 return 0;
 618             }
 619         }
 620
 621         txNew.nExpiryHeight = 0;
 622         txNew.nLockTime = std::max(pindexPrev->GetMedianTimePast()+1, GetAdjustedTime());
 623
 624         if ( ASSETCHAINS_SYMBOL[0] == 0 && IS_KOMODO_NOTARY != 0 && My_notaryid >= 0 )
 625             txNew.vout[0].nValue += 5000;
 626
 627         // check if coinbase transactions must be time locked at current subsidy and prepend the time lock
 628         // to transaction if so, cast for GTE operator
 629         if ((uint64_t)(txNew.vout[0].nValue) >= ASSETCHAINS_TIMELOCKGTE)
 630         {
 631             int32_t opretlen, p2shlen, scriptlen;
 632             CScriptExt opretScript = CScriptExt();
 633
 634             txNew.vout.resize(2);
 635
 636             // prepend time lock to original script unless original script is P2SH, in which case, we will leave the coins
 637             // protected only by the time lock rather than 100% inaccessible
 638             opretScript.AddCheckLockTimeVerify(komodo_block_unlocktime(nHeight));
 639             if (scriptPubKeyIn.IsPayToScriptHash() || scriptPubKeyIn.IsPayToCryptoCondition())
 640             {
 641                 fprintf(stderr,"CreateNewBlock: attempt to add timelock to pay2sh or pay2cc\n");
 642                 return 0;
 643             }
 644
 645             opretScript += scriptPubKeyIn;
 646
 647             txNew.vout[0].scriptPubKey = CScriptExt().PayToScriptHash(CScriptID(opretScript));
 648             txNew.vout[1].scriptPubKey = CScriptExt().OpReturnScript(opretScript, OPRETTYPE_TIMELOCK);
 649             txNew.vout[1].nValue = 0;
 650         } // timelocks and commissions are currently incompatible due to validation complexity of the combination
 651         else if ( nHeight > 1 && ASSETCHAINS_SYMBOL[0] != 0 && ASSETCHAINS_OVERRIDE_PUBKEY33[0] != 0 && ASSETCHAINS_COMMISSION != 0 && (commission= komodo_commission((CBlock*)&pblocktemplate->block)) != 0 )
 652         {
 653             int32_t i; uint8_t *ptr;
 654             txNew.vout.resize(2);
 655             txNew.vout[1].nValue = commission;
 656             txNew.vout[1].scriptPubKey.resize(35);
 657             ptr = (uint8_t *)&txNew.vout[1].scriptPubKey[0];
 658             ptr[0] = 33;
 659             for (i=0; i<33; i++)
 660                 ptr[i+1] = ASSETCHAINS_OVERRIDE_PUBKEY33[i];
 661             ptr[34] = OP_CHECKSIG;
 662             //printf("autocreate commision vout\n");
 663         }
 664
 665         pblock->vtx[0] = txNew;
 666         pblocktemplate->vTxFees[0] = -nFees;
 667
 668         // if not Verus stake, setup nonce, otherwise, leave it alone
 669         if (!isStake || ASSETCHAINS_LWMAPOS == 0)
 670         {
 671             // Randomise nonce
 672             arith_uint256 nonce = UintToArith256(GetRandHash());
 673
 674             // Clear the top 16 and bottom 16 or 24 bits (for local use as thread flags and counters)
 675             nonce <<= ASSETCHAINS_NONCESHIFT[ASSETCHAINS_ALGO];
 676             nonce >>= 16;
 677             pblock->nNonce = ArithToUint256(nonce);
 678         }
 679
 680         // Fill in header
 681         pblock->hashPrevBlock  = pindexPrev->GetBlockHash();
 682         pblock->hashFinalSaplingRoot   = sapling_tree.root();
 683
 684         // all Verus PoS chains need this data in the block at all times
 685         if ( ASSETCHAINS_LWMAPOS || ASSETCHAINS_SYMBOL[0] == 0 || ASSETCHAINS_STAKED == 0 || KOMODO_MININGTHREADS > 0 )
 686         {
 687             UpdateTime(pblock, Params().GetConsensus(), pindexPrev);
 688             pblock->nBits = GetNextWorkRequired(pindexPrev, pblock, Params().GetConsensus());
 689         }
 690         pblock->nSolution.clear();
 691         pblocktemplate->vTxSigOps[0] = GetLegacySigOpCount(pblock->vtx[0]);
 692         if ( ASSETCHAINS_SYMBOL[0] == 0 && IS_KOMODO_NOTARY != 0 && My_notaryid >= 0 )
 693         {
 694             uint32_t r;
 695             CMutableTransaction txNotary = CreateNewContextualCMutableTransaction(Params().GetConsensus(), chainActive.Height() + 1);
 696             if ( pblock->nTime < pindexPrev->nTime+60 )
 697                 pblock->nTime = pindexPrev->nTime + 60;
 698             if ( gpucount < 33 )
 699             {
 700                 uint8_t tmpbuffer[40]; uint32_t r; int32_t n=0; uint256 randvals;
 701                 memcpy(&tmpbuffer[n],&My_notaryid,sizeof(My_notaryid)), n += sizeof(My_notaryid);
 702                 memcpy(&tmpbuffer[n],&Mining_height,sizeof(Mining_height)), n += sizeof(Mining_height);
 703                 memcpy(&tmpbuffer[n],&pblock->hashPrevBlock,sizeof(pblock->hashPrevBlock)), n += sizeof(pblock->hashPrevBlock);
 704                 vcalc_sha256(0,(uint8_t *)&randvals,tmpbuffer,n);
 705                 memcpy(&r,&randvals,sizeof(r));
 706                 pblock->nTime += (r % (33 - gpucount)*(33 - gpucount));
 707             }
 708             if ( komodo_notaryvin(txNotary,NOTARY_PUBKEY33) > 0 )
 709             {
 710                 CAmount txfees = 5000;
 711                 pblock->vtx.push_back(txNotary);
 712                 pblocktemplate->vTxFees.push_back(txfees);
 713                 pblocktemplate->vTxSigOps.push_back(GetLegacySigOpCount(txNotary));
 714                 nFees += txfees;
 715                 pblocktemplate->vTxFees[0] = -nFees;
 716                 //*(uint64_t *)(&pblock->vtx[0].vout[0].nValue) += txfees;
 717                 //fprintf(stderr,"added notaryvin\n");
 718             }
 719             else
 720             {
 721                 fprintf(stderr,"error adding notaryvin, need to create 0.0001 utxos\n");
 722                 return(0);
 723             }
 724         }
 725         else if ( ASSETCHAINS_CC == 0 && pindexPrev != 0 && ASSETCHAINS_STAKED == 0 && (ASSETCHAINS_SYMBOL[0] != 0 || IS_KOMODO_NOTARY == 0 || My_notaryid < 0) )
 726         {
 727             CValidationState state;
 728             //fprintf(stderr,"check validity\n");
 729             if ( !TestBlockValidity(state, *pblock, pindexPrev, false, false)) // invokes CC checks
 730             {
 731                 throw std::runtime_error("CreateNewBlock(): TestBlockValidity failed");
 732             }
 733             //fprintf(stderr,"valid\n");
 734         }
 735     }
 736     //fprintf(stderr,"done new block\n");
 737     return pblocktemplate.release();
 738 }
 739
 740 /*
 741  #ifdef ENABLE_WALLET
 742  boost::optional<CScript> GetMinerScriptPubKey(CReserveKey& reservekey)
 743  #else
 744  boost::optional<CScript> GetMinerScriptPubKey()
 745  #endif
 746  {
 747  CKeyID keyID;
 748  CBitcoinAddress addr;
 749  if (addr.SetString(GetArg("-mineraddress", ""))) {
 750  addr.GetKeyID(keyID);
 751  } else {
 752  #ifdef ENABLE_WALLET
 753  CPubKey pubkey;
 754  if (!reservekey.GetReservedKey(pubkey)) {
 755  return boost::optional<CScript>();
 756  }
 757  keyID = pubkey.GetID();
 758  #else
 759  return boost::optional<CScript>();
 760  #endif
 761  }
 762
 763  CScript scriptPubKey = CScript() << OP_DUP << OP_HASH160 << ToByteVector(keyID) << OP_EQUALVERIFY << OP_CHECKSIG;
 764  return scriptPubKey;
 765  }
 766
 767  #ifdef ENABLE_WALLET
 768  CBlockTemplate* CreateNewBlockWithKey(CReserveKey& reservekey)
 769  {
 770  boost::optional<CScript> scriptPubKey = GetMinerScriptPubKey(reservekey);
 771  #else
 772  CBlockTemplate* CreateNewBlockWithKey()
 773  {
 774  boost::optional<CScript> scriptPubKey = GetMinerScriptPubKey();
 775  #endif
 776
 777  if (!scriptPubKey) {
 778  return NULL;
 779  }
 780  return CreateNewBlock(*scriptPubKey);
 781  }*/
 782
 783 //////////////////////////////////////////////////////////////////////////////
 784 //
 785 // Internal miner
 786 //
 787
 788 #ifdef ENABLE_MINING
 789
 790 void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int& nExtraNonce)
 791 {
 792     // Update nExtraNonce
 793     static uint256 hashPrevBlock;
 794     if (hashPrevBlock != pblock->hashPrevBlock)
 795     {
 796         nExtraNonce = 0;
 797         hashPrevBlock = pblock->hashPrevBlock;
 798     }
 799     ++nExtraNonce;
 800     unsigned int nHeight = pindexPrev->GetHeight()+1; // Height first in coinbase required for block.version=2
 801     CMutableTransaction txCoinbase(pblock->vtx[0]);
 802     txCoinbase.vin[0].scriptSig = (CScript() << nHeight << CScriptNum(nExtraNonce)) + COINBASE_FLAGS;
 803     assert(txCoinbase.vin[0].scriptSig.size() <= 100);
 804
 805     pblock->vtx[0] = txCoinbase;
 806     pblock->hashMerkleRoot = pblock->BuildMerkleTree();
 807 }
 808
 809 #ifdef ENABLE_WALLET
 810 //////////////////////////////////////////////////////////////////////////////
 811 //
 812 // Internal miner
 813 //
 814
 815 CBlockTemplate* CreateNewBlockWithKey(CReserveKey& reservekey, int32_t nHeight, int32_t gpucount, bool isStake)
 816 {
 817     CPubKey pubkey; CScript scriptPubKey; uint8_t *ptr; int32_t i;
 818     if ( nHeight == 1 && ASSETCHAINS_OVERRIDE_PUBKEY33[0] != 0 )
 819     {
 820         scriptPubKey = CScript() << ParseHex(ASSETCHAINS_OVERRIDE_PUBKEY) << OP_CHECKSIG;
 821     }
 822     else if ( USE_EXTERNAL_PUBKEY != 0 )
 823     {
 824         //fprintf(stderr,"use notary pubkey\n");
 825         scriptPubKey = CScript() << ParseHex(NOTARY_PUBKEY) << OP_CHECKSIG;
 826     }
 827     else
 828     {
 829         if (!reservekey.GetReservedKey(pubkey))
 830         {
 831             return NULL;
 832         }
 833         scriptPubKey.resize(35);
 834         ptr = (uint8_t *)pubkey.begin();
 835         scriptPubKey[0] = 33;
 836         for (i=0; i<33; i++)
 837             scriptPubKey[i+1] = ptr[i];
 838         scriptPubKey[34] = OP_CHECKSIG;
 839         //scriptPubKey = CScript() << ToByteVector(pubkey) << OP_CHECKSIG;
 840     }
 841     return CreateNewBlock(scriptPubKey, gpucount, isStake);
 842 }
 843
 844 void komodo_broadcast(CBlock *pblock,int32_t limit)
 845 {
 846     int32_t n = 1;
 847     //fprintf(stderr,"broadcast new block t.%u\n",(uint32_t)time(NULL));
 848     {
 849         LOCK(cs_vNodes);
 850         BOOST_FOREACH(CNode* pnode, vNodes)
 851         {
 852             if ( pnode->hSocket == INVALID_SOCKET )
 853                 continue;
 854             if ( (rand() % n) == 0 )
 855             {
 856                 pnode->PushMessage("block", *pblock);
 857                 if ( n++ > limit )
 858                     break;
 859             }
 860         }
 861     }
 862     //fprintf(stderr,"finished broadcast new block t.%u\n",(uint32_t)time(NULL));
 863 }
 864
 865 static bool ProcessBlockFound(CBlock* pblock, CWallet& wallet, CReserveKey& reservekey)
 866 #else
 867 static bool ProcessBlockFound(CBlock* pblock)
 868 #endif // ENABLE_WALLET
 869 {
 870     LogPrintf("%s\n", pblock->ToString());
 871     LogPrintf("generated %s height.%d\n", FormatMoney(pblock->vtx[0].vout[0].nValue),chainActive.LastTip()->GetHeight()+1);
 872
 873     // Found a solution
 874     {
 875         if (pblock->hashPrevBlock != chainActive.LastTip()->GetBlockHash())
 876         {
 877             uint256 hash; int32_t i;
 878             hash = pblock->hashPrevBlock;
 879             for (i=31; i>=0; i--)
 880                 fprintf(stderr,"%02x",((uint8_t *)&hash)[i]);
 881             fprintf(stderr," <- prev (stale)\n");
 882             hash = chainActive.LastTip()->GetBlockHash();
 883             for (i=31; i>=0; i--)
 884                 fprintf(stderr,"%02x",((uint8_t *)&hash)[i]);
 885             fprintf(stderr," <- chainTip (stale)\n");
 886
 887             return error("KomodoMiner: generated block is stale");
 888         }
 889     }
 890
 891 #ifdef ENABLE_WALLET
 892     // Remove key from key pool
 893     if ( IS_KOMODO_NOTARY == 0 )
 894     {
 895         if (GetArg("-mineraddress", "").empty()) {
 896             // Remove key from key pool
 897             reservekey.KeepKey();
 898         }
 899     }
 900     // Track how many getdata requests this block gets
 901     //if ( 0 )
 902     {
 903         //fprintf(stderr,"lock cs_wallet\n");
 904         LOCK(wallet.cs_wallet);
 905         wallet.mapRequestCount[pblock->GetHash()] = 0;
 906     }
 907 #endif
 908     //fprintf(stderr,"process new block\n");
 909
 910     // Process this block the same as if we had received it from another node
 911     CValidationState state;
 912     if (!ProcessNewBlock(1,chainActive.LastTip()->GetHeight()+1,state, NULL, pblock, true, NULL))
 913         return error("KomodoMiner: ProcessNewBlock, block not accepted");
 914
 915     TrackMinedBlock(pblock->GetHash());
 916     komodo_broadcast(pblock,16);
 917     return true;
 918 }
 919
 920 int32_t komodo_baseid(char *origbase);
 921 int32_t komodo_eligiblenotary(uint8_t pubkeys[66][33],int32_t *mids,uint32_t *blocktimes,int32_t *nonzpkeysp,int32_t height);
 922 arith_uint256 komodo_PoWtarget(int32_t *percPoSp,arith_uint256 target,int32_t height,int32_t goalperc);
 923 int32_t FOUND_BLOCK,KOMODO_MAYBEMINED;
 924 extern int32_t KOMODO_LASTMINED,KOMODO_INSYNC;
 925 int32_t roundrobin_delay;
 926 arith_uint256 HASHTarget,HASHTarget_POW;
 927
 928 // wait for peers to connect
 929 int32_t waitForPeers(const CChainParams &chainparams)
 930 {
 931     if (chainparams.MiningRequiresPeers())
 932     {
 933         bool fvNodesEmpty;
 934         {
 935             boost::this_thread::interruption_point();
 936             LOCK(cs_vNodes);
 937             fvNodesEmpty = vNodes.empty();
 938         }
 939         if (fvNodesEmpty || IsNotInSync())
 940         {
 941             int loops = 0, blockDiff = 0, newDiff = 0;
 942
 943             do {
 944                 if (fvNodesEmpty)
 945                 {
 946                     MilliSleep(1000 + rand() % 4000);
 947                     boost::this_thread::interruption_point();
 948                     LOCK(cs_vNodes);
 949                     fvNodesEmpty = vNodes.empty();
 950                     loops = 0;
 951                     blockDiff = 0;
 952                 }
 953                 if ((newDiff = IsNotInSync()) > 1)
 954                 {
 955                     if (blockDiff != newDiff)
 956                     {
 957                         blockDiff = newDiff;
 958                     }
 959                     else
 960                     {
 961                         if (++loops <= 10)
 962                         {
 963                             MilliSleep(1000);
 964                         }
 965                         else break;
 966                     }
 967                 }
 968             } while (fvNodesEmpty || IsNotInSync());
 969             MilliSleep(100 + rand() % 400);
 970         }
 971     }
 972 }
 973
 974 #ifdef ENABLE_WALLET
 975 CBlockIndex *get_chainactive(int32_t height)
 976 {
 977     if ( chainActive.LastTip() != 0 )
 978     {
 979         if ( height <= chainActive.LastTip()->GetHeight() )
 980         {
 981             LOCK(cs_main);
 982             return(chainActive[height]);
 983         }
 984         // else fprintf(stderr,"get_chainactive height %d > active.%d\n",height,chainActive.Tip()->GetHeight());
 985     }
 986     //fprintf(stderr,"get_chainactive null chainActive.Tip() height %d\n",height);
 987     return(0);
 988 }
 989
 990 /*
 991  * A separate thread to stake, while the miner threads mine.
 992  */
 993 void static VerusStaker(CWallet *pwallet)
 994 {
 995     LogPrintf("Verus staker thread started\n");
 996     RenameThread("verus-staker");
 997
 998     const CChainParams& chainparams = Params();
 999     auto consensusParams = chainparams.GetConsensus();
1000
1001     // Each thread has its own key
1002     CReserveKey reservekey(pwallet);
1003
1004     // Each thread has its own counter
1005     unsigned int nExtraNonce = 0;
1006     std::vector<unsigned char> solnPlaceholder = std::vector<unsigned char>();
1007     solnPlaceholder.resize(Eh200_9.SolutionWidth);
1008     uint8_t *script; uint64_t total,checktoshis; int32_t i,j;
1009
1010     while ( (ASSETCHAIN_INIT == 0 || KOMODO_INITDONE == 0) ) //chainActive.Tip()->GetHeight() != 235300 &&
1011     {
1012         sleep(1);
1013         if ( komodo_baseid(ASSETCHAINS_SYMBOL) < 0 )
1014             break;
1015     }
1016
1017     // try a nice clean peer connection to start
1018     CBlockIndex *pindexPrev, *pindexCur;
1019     do {
1020         pindexPrev = chainActive.LastTip();
1021         MilliSleep(5000 + rand() % 5000);
1022         waitForPeers(chainparams);
1023         pindexCur = chainActive.LastTip();
1024     } while (pindexPrev != pindexCur);
1025
1026     try {
1027         while (true)
1028         {
1029             waitForPeers(chainparams);
1030             CBlockIndex* pindexPrev = chainActive.LastTip();
1031             printf("Staking height %d for %s\n", pindexPrev->GetHeight() + 1, ASSETCHAINS_SYMBOL);
1032
1033             // Create new block
1034             unsigned int nTransactionsUpdatedLast = mempool.GetTransactionsUpdated();
1035             if ( Mining_height != pindexPrev->GetHeight()+1 )
1036             {
1037                 Mining_height = pindexPrev->GetHeight()+1;
1038                 Mining_start = (uint32_t)time(NULL);
1039             }
1040
1041             // Check for stop or if block needs to be rebuilt
1042             boost::this_thread::interruption_point();
1043
1044             // try to stake a block
1045             CBlockTemplate *ptr = NULL;
1046             if (Mining_height > VERUS_MIN_STAKEAGE)
1047                 ptr = CreateNewBlockWithKey(reservekey, Mining_height, 0, true);
1048
1049             if ( ptr == 0 )
1050             {
1051                 // wait to try another staking block until after the tip moves again
1052                 while ( chainActive.LastTip() == pindexPrev )
1053                     sleep(1);
1054                 continue;
1055             }
1056
1057             unique_ptr<CBlockTemplate> pblocktemplate(ptr);
1058             if (!pblocktemplate.get())
1059             {
1060                 if (GetArg("-mineraddress", "").empty()) {
1061                     LogPrintf("Error in %s staker: Keypool ran out, please call keypoolrefill before restarting the mining thread\n",
1062                               ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO]);
1063                 } else {
1064                     // Should never reach here, because -mineraddress validity is checked in init.cpp
1065                     LogPrintf("Error in %s staker: Invalid %s -mineraddress\n", ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO], ASSETCHAINS_SYMBOL);
1066                 }
1067                 return;
1068             }
1069
1070             CBlock *pblock = &pblocktemplate->block;
1071             LogPrintf("Staking with %u transactions in block (%u bytes)\n", pblock->vtx.size(),::GetSerializeSize(*pblock,SER_NETWORK,PROTOCOL_VERSION));
1072             //
1073             // Search
1074             //
1075             int64_t nStart = GetTime();
1076
1077             // take up the necessary space for alignment
1078             pblock->nSolution = solnPlaceholder;
1079
1080             // we don't use this, but IncrementExtraNonce is the function that builds the merkle tree
1081             unsigned int nExtraNonce = 0;
1082             IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
1083
1084             if (vNodes.empty() && chainparams.MiningRequiresPeers())
1085             {
1086                 if ( Mining_height > ASSETCHAINS_MINHEIGHT )
1087                 {
1088                     fprintf(stderr,"no nodes, attempting reconnect\n");
1089                     continue;
1090                 }
1091             }
1092
1093             if (mempool.GetTransactionsUpdated() != nTransactionsUpdatedLast && GetTime() - nStart > 60)
1094             {
1095                 fprintf(stderr,"timeout, retrying\n");
1096                 continue;
1097             }
1098
1099             if ( pindexPrev != chainActive.LastTip() )
1100             {
1101                 printf("Block %d added to chain\n", chainActive.LastTip()->GetHeight());
1102                 MilliSleep(250);
1103                 continue;
1104             }
1105
1106             int32_t unlockTime = komodo_block_unlocktime(Mining_height);
1107             int64_t subsidy = (int64_t)(pblock->vtx[0].vout[0].nValue);
1108
1109             uint256 hashTarget = ArithToUint256(arith_uint256().SetCompact(pblock->nBits));
1110
1111             pblock->nBits = GetNextWorkRequired(pindexPrev, pblock, consensusParams);
1112
1113             UpdateTime(pblock, consensusParams, pindexPrev);
1114
1115             ProcessBlockFound(pblock, *pwallet, reservekey);
1116
1117             LogPrintf("Using %s algorithm:\n", ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO]);
1118             LogPrintf("Staked block found  \n  hash: %s  \ntarget: %s\n", pblock->GetHash().GetHex(), hashTarget.GetHex());
1119             printf("Found block %d \n", Mining_height );
1120             printf("staking reward %.8f %s!\n", (double)subsidy / (double)COIN, ASSETCHAINS_SYMBOL);
1121             arith_uint256 post;
1122             post.SetCompact(pblock->GetVerusPOSTarget());
1123             pindexPrev = get_chainactive(Mining_height - 100);
1124             CTransaction &sTx = pblock->vtx[pblock->vtx.size()-1];
1125             printf("POS hash: %s  \ntarget:   %s\n",
1126                 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());
1127             if (unlockTime > Mining_height && subsidy >= ASSETCHAINS_TIMELOCKGTE)
1128                 printf("- timelocked until block %i\n", unlockTime);
1129             else
1130                 printf("\n");
1131
1132             // Check for stop or if block needs to be rebuilt
1133             boost::this_thread::interruption_point();
1134
1135             sleep(3);
1136
1137             // In regression test mode, stop mining after a block is found.
1138             if (chainparams.MineBlocksOnDemand()) {
1139                 throw boost::thread_interrupted();
1140             }
1141         }
1142     }
1143     catch (const boost::thread_interrupted&)
1144     {
1145         LogPrintf("VerusStaker terminated\n");
1146         throw;
1147     }
1148     catch (const std::runtime_error &e)
1149     {
1150         LogPrintf("VerusStaker runtime error: %s\n", e.what());
1151         return;
1152     }
1153 }
1154
1155 void static BitcoinMiner_noeq(CWallet *pwallet)
1156 #else
1157 void static BitcoinMiner_noeq()
1158 #endif
1159 {
1160     LogPrintf("%s miner started\n", ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO]);
1161     RenameThread("verushash-miner");
1162
1163 #ifdef ENABLE_WALLET
1164     // Each thread has its own key
1165     CReserveKey reservekey(pwallet);
1166 #endif
1167
1168     const CChainParams& chainparams = Params();
1169     // Each thread has its own counter
1170     unsigned int nExtraNonce = 0;
1171     std::vector<unsigned char> solnPlaceholder = std::vector<unsigned char>();
1172     solnPlaceholder.resize(Eh200_9.SolutionWidth);
1173     uint8_t *script; uint64_t total,checktoshis; int32_t i,j;
1174
1175     while ( (ASSETCHAIN_INIT == 0 || KOMODO_INITDONE == 0) ) //chainActive.Tip()->GetHeight() != 235300 &&
1176     {
1177         sleep(1);
1178         if ( komodo_baseid(ASSETCHAINS_SYMBOL) < 0 )
1179             break;
1180     }
1181
1182     SetThreadPriority(THREAD_PRIORITY_LOWEST);
1183
1184     // try a nice clean peer connection to start
1185     CBlockIndex *pindexPrev, *pindexCur;
1186     do {
1187         pindexPrev = chainActive.LastTip();
1188         MilliSleep(5000 + rand() % 5000);
1189         waitForPeers(chainparams);
1190         pindexCur = chainActive.LastTip();
1191     } while (pindexPrev != pindexCur);
1192
1193     // this will not stop printing more than once in all cases, but it will allow us to print in all cases
1194     // and print duplicates rarely without having to synchronize
1195     static CBlockIndex *lastChainTipPrinted;
1196
1197     miningTimer.start();
1198
1199     try {
1200         printf("Mining %s with %s\n", ASSETCHAINS_SYMBOL, ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO]);
1201         while (true)
1202         {
1203             miningTimer.stop();
1204             waitForPeers(chainparams);
1205
1206             pindexPrev = chainActive.LastTip();
1207             sleep(1);
1208
1209             // prevent forking on startup before the diff algorithm kicks in
1210             if (pindexPrev->GetHeight() < 50 || pindexPrev != chainActive.LastTip())
1211             {
1212                 do {
1213                     pindexPrev = chainActive.LastTip();
1214                     MilliSleep(5000 + rand() % 5000);
1215                 } while (pindexPrev != chainActive.LastTip());
1216             }
1217
1218             // Create new block
1219             unsigned int nTransactionsUpdatedLast = mempool.GetTransactionsUpdated();
1220             if ( Mining_height != pindexPrev->GetHeight()+1 )
1221             {
1222                 Mining_height = pindexPrev->GetHeight()+1;
1223                 Mining_start = (uint32_t)time(NULL);
1224             }
1225
1226             if (lastChainTipPrinted != pindexPrev)
1227             {
1228                 printf("Mining height %d\n", Mining_height);
1229                 lastChainTipPrinted = pindexPrev;
1230             }
1231
1232             miningTimer.start();
1233
1234 #ifdef ENABLE_WALLET
1235             CBlockTemplate *ptr = CreateNewBlockWithKey(reservekey, Mining_height, 0);
1236 #else
1237             CBlockTemplate *ptr = CreateNewBlockWithKey();
1238 #endif
1239             if ( ptr == 0 )
1240             {
1241                 static uint32_t counter;
1242                 if ( counter++ < 100 )
1243                     fprintf(stderr,"created illegal block, retry\n");
1244                 continue;
1245             }
1246
1247             unique_ptr<CBlockTemplate> pblocktemplate(ptr);
1248             if (!pblocktemplate.get())
1249             {
1250                 if (GetArg("-mineraddress", "").empty()) {
1251                     LogPrintf("Error in %s miner: Keypool ran out, please call keypoolrefill before restarting the mining thread\n",
1252                               ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO]);
1253                 } else {
1254                     // Should never reach here, because -mineraddress validity is checked in init.cpp
1255                     LogPrintf("Error in %s miner: Invalid %s -mineraddress\n", ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO], ASSETCHAINS_SYMBOL);
1256                 }
1257                 return;
1258             }
1259             CBlock *pblock = &pblocktemplate->block;
1260             if ( ASSETCHAINS_SYMBOL[0] != 0 )
1261             {
1262                 if ( ASSETCHAINS_REWARD[0] == 0 && !ASSETCHAINS_LASTERA )
1263                 {
1264                     if ( pblock->vtx.size() == 1 && pblock->vtx[0].vout.size() == 1 && Mining_height > ASSETCHAINS_MINHEIGHT )
1265                     {
1266                         static uint32_t counter;
1267                         if ( counter++ < 10 )
1268                             fprintf(stderr,"skip generating %s on-demand block, no tx avail\n",ASSETCHAINS_SYMBOL);
1269                         sleep(10);
1270                         continue;
1271                     } else fprintf(stderr,"%s vouts.%d mining.%d vs %d\n",ASSETCHAINS_SYMBOL,(int32_t)pblock->vtx[0].vout.size(),Mining_height,ASSETCHAINS_MINHEIGHT);
1272                 }
1273             }
1274             IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
1275             LogPrintf("Running %s miner with %u transactions in block (%u bytes)\n",ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO],
1276                        pblock->vtx.size(),::GetSerializeSize(*pblock,SER_NETWORK,PROTOCOL_VERSION));
1277             //
1278             // Search
1279             //
1280             uint32_t savebits; int64_t nStart = GetTime();
1281
1282             pblock->nSolution = solnPlaceholder;
1283             savebits = pblock->nBits;
1284             arith_uint256 hashTarget = arith_uint256().SetCompact(pblock->nBits);
1285             arith_uint256 mask(ASSETCHAINS_NONCEMASK[ASSETCHAINS_ALGO]);
1286
1287             Mining_start = 0;
1288
1289             if ( pindexPrev != chainActive.LastTip() )
1290             {
1291                 if (lastChainTipPrinted != chainActive.LastTip())
1292                 {
1293                     lastChainTipPrinted = chainActive.LastTip();
1294                     printf("Block %d added to chain\n", lastChainTipPrinted->GetHeight());
1295                 }
1296                 MilliSleep(250);
1297                 continue;
1298             }
1299
1300             if ( ASSETCHAINS_STAKED != 0 )
1301             {
1302                 int32_t percPoS,z;
1303                 hashTarget = komodo_PoWtarget(&percPoS,hashTarget,Mining_height,ASSETCHAINS_STAKED);
1304                 for (z=31; z>=0; z--)
1305                     fprintf(stderr,"%02x",((uint8_t *)&hashTarget)[z]);
1306                 fprintf(stderr," PoW for staked coin PoS %d%% vs target %d%%\n",percPoS,(int32_t)ASSETCHAINS_STAKED);
1307             }
1308
1309             while (true)
1310             {
1311                 arith_uint256 arNonce = UintToArith256(pblock->nNonce);
1312
1313                 CVerusHashWriter ss = CVerusHashWriter(SER_GETHASH, PROTOCOL_VERSION);
1314                 ss << *((CBlockHeader *)pblock);
1315                 int64_t *extraPtr = ss.xI64p();
1316                 CVerusHash &vh = ss.GetState();
1317                 uint256 hashResult = uint256();
1318                 vh.ClearExtra();
1319                 int64_t i, count = ASSETCHAINS_NONCEMASK[ASSETCHAINS_ALGO] + 1;
1320                 int64_t hashesToGo = ASSETCHAINS_HASHESPERROUND[ASSETCHAINS_ALGO];
1321
1322                 // for speed check NONCEMASK at a time
1323                 for (i = 0; i < count; i++)
1324                 {
1325                     *extraPtr = i;
1326                     vh.ExtraHash((unsigned char *)&hashResult);
1327
1328                     if ( UintToArith256(hashResult) <= hashTarget )
1329                     {
1330                         if (pblock->nSolution.size() != 1344)
1331                         {
1332                             LogPrintf("ERROR: Block solution is not 1344 bytes as it should be");
1333                             sleep(5);
1334                             break;
1335                         }
1336
1337                         SetThreadPriority(THREAD_PRIORITY_NORMAL);
1338
1339                         *((int64_t *)&(pblock->nSolution.data()[pblock->nSolution.size() - 15])) = i;
1340
1341                         int32_t unlockTime = komodo_block_unlocktime(Mining_height);
1342                         int64_t subsidy = (int64_t)(pblock->vtx[0].vout[0].nValue);
1343
1344                         LogPrintf("Using %s algorithm:\n", ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO]);
1345                         LogPrintf("proof-of-work found  \n  hash: %s  \ntarget: %s\n", pblock->GetHash().GetHex(), hashTarget.GetHex());
1346                         printf("Found block %d \n", Mining_height );
1347                         printf("mining reward %.8f %s!\n", (double)subsidy / (double)COIN, ASSETCHAINS_SYMBOL);
1348                         printf("  hash: %s  \ntarget: %s\n", pblock->GetHash().GetHex().c_str(), hashTarget.GetHex().c_str());
1349                         if (unlockTime > Mining_height && subsidy >= ASSETCHAINS_TIMELOCKGTE)
1350                             printf("- timelocked until block %i\n", unlockTime);
1351                         else
1352                             printf("\n");
1353 #ifdef ENABLE_WALLET
1354                         ProcessBlockFound(pblock, *pwallet, reservekey);
1355 #else
1356                         ProcessBlockFound(pblock));
1357 #endif
1358                         SetThreadPriority(THREAD_PRIORITY_LOWEST);
1359                         break;
1360                     }
1361                     // check periodically if we're stale
1362                     if (!--hashesToGo)
1363                     {
1364                         if ( pindexPrev != chainActive.LastTip() )
1365                         {
1366                             if (lastChainTipPrinted != chainActive.LastTip())
1367                             {
1368                                 lastChainTipPrinted = chainActive.LastTip();
1369                                 printf("Block %d added to chain\n", lastChainTipPrinted->GetHeight());
1370                             }
1371                             break;
1372                         }
1373                         hashesToGo = ASSETCHAINS_HASHESPERROUND[ASSETCHAINS_ALGO];
1374                     }
1375                 }
1376
1377                 {
1378                     LOCK(cs_metrics);
1379                     nHashCount += i;
1380                 }
1381
1382                 // Check for stop or if block needs to be rebuilt
1383                 boost::this_thread::interruption_point();
1384
1385                 if (vNodes.empty() && chainparams.MiningRequiresPeers())
1386                 {
1387                     if ( Mining_height > ASSETCHAINS_MINHEIGHT )
1388                     {
1389                         fprintf(stderr,"no nodes, attempting reconnect\n");
1390                         break;
1391                     }
1392                 }
1393
1394                 if (mempool.GetTransactionsUpdated() != nTransactionsUpdatedLast && GetTime() - nStart > 60)
1395                 {
1396                     fprintf(stderr,"timeout, retrying\n");
1397                     break;
1398                 }
1399
1400                 if ( pindexPrev != chainActive.LastTip() )
1401                 {
1402                     if (lastChainTipPrinted != chainActive.LastTip())
1403                     {
1404                         lastChainTipPrinted = chainActive.LastTip();
1405                         printf("Block %d added to chain\n", lastChainTipPrinted->GetHeight());
1406                     }
1407                     break;
1408                 }
1409
1410 #ifdef _WIN32
1411                 printf("%llu mega hashes complete - working\n", (ASSETCHAINS_NONCEMASK[ASSETCHAINS_ALGO] + 1) / 1048576);
1412 #else
1413                 printf("%lu mega hashes complete - working\n", (ASSETCHAINS_NONCEMASK[ASSETCHAINS_ALGO] + 1) / 1048576);
1414 #endif
1415                 break;
1416
1417             }
1418         }
1419     }
1420     catch (const boost::thread_interrupted&)
1421     {
1422         miningTimer.stop();
1423         LogPrintf("%s miner terminated\n", ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO]);
1424         throw;
1425     }
1426     catch (const std::runtime_error &e)
1427     {
1428         miningTimer.stop();
1429         LogPrintf("%s miner runtime error: %s\n", ASSETCHAINS_ALGORITHMS[ASSETCHAINS_ALGO], e.what());
1430         return;
1431     }
1432     miningTimer.stop();
1433 }
1434
1435 #ifdef ENABLE_WALLET
1436 void static BitcoinMiner(CWallet *pwallet)
1437 #else
1438 void static BitcoinMiner()
1439 #endif
1440 {
1441     LogPrintf("KomodoMiner started\n");
1442     SetThreadPriority(THREAD_PRIORITY_LOWEST);
1443     RenameThread("komodo-miner");
1444     const CChainParams& chainparams = Params();
1445
1446 #ifdef ENABLE_WALLET
1447     // Each thread has its own key
1448     CReserveKey reservekey(pwallet);
1449 #endif
1450
1451     // Each thread has its own counter
1452     unsigned int nExtraNonce = 0;
1453
1454     unsigned int n = chainparams.EquihashN();
1455     unsigned int k = chainparams.EquihashK();
1456     uint8_t *script; uint64_t total,checktoshis; int32_t i,j,gpucount=KOMODO_MAXGPUCOUNT,notaryid = -1;
1457     while ( (ASSETCHAIN_INIT == 0 || KOMODO_INITDONE == 0) )
1458     {
1459         sleep(1);
1460         if ( komodo_baseid(ASSETCHAINS_SYMBOL) < 0 )
1461             break;
1462     }
1463     if ( ASSETCHAINS_SYMBOL[0] == 0 )
1464         komodo_chosennotary(&notaryid,chainActive.LastTip()->GetHeight(),NOTARY_PUBKEY33,(uint32_t)chainActive.LastTip()->GetBlockTime());
1465     if ( notaryid != My_notaryid )
1466         My_notaryid = notaryid;
1467     std::string solver;
1468     //if ( notaryid >= 0 || ASSETCHAINS_SYMBOL[0] != 0 )
1469     solver = "tromp";
1470     //else solver = "default";
1471     assert(solver == "tromp" || solver == "default");
1472     LogPrint("pow", "Using Equihash solver \"%s\" with n = %u, k = %u\n", solver, n, k);
1473     if ( ASSETCHAINS_SYMBOL[0] != 0 )
1474         fprintf(stderr,"notaryid.%d Mining.%s with %s\n",notaryid,ASSETCHAINS_SYMBOL,solver.c_str());
1475     std::mutex m_cs;
1476     bool cancelSolver = false;
1477     boost::signals2::connection c = uiInterface.NotifyBlockTip.connect(
1478                                                                        [&m_cs, &cancelSolver](const uint256& hashNewTip) mutable {
1479                                                                            std::lock_guard<std::mutex> lock{m_cs};
1480                                                                            cancelSolver = true;
1481                                                                        }
1482                                                                        );
1483     miningTimer.start();
1484
1485     try {
1486         if ( ASSETCHAINS_SYMBOL[0] != 0 )
1487             fprintf(stderr,"try %s Mining with %s\n",ASSETCHAINS_SYMBOL,solver.c_str());
1488         while (true)
1489         {
1490             if (chainparams.MiningRequiresPeers()) //chainActive.LastTip()->GetHeight() != 235300 &&
1491             {
1492                 //if ( ASSETCHAINS_SEED != 0 && chainActive.LastTip()->GetHeight() < 100 )
1493                 //    break;
1494                 // Busy-wait for the network to come online so we don't waste time mining
1495                 // on an obsolete chain. In regtest mode we expect to fly solo.
1496                 miningTimer.stop();
1497                 do {
1498                     bool fvNodesEmpty;
1499                     {
1500                         //LOCK(cs_vNodes);
1501                         fvNodesEmpty = vNodes.empty();
1502                     }
1503                     if (!fvNodesEmpty )//&& !IsInitialBlockDownload())
1504                         break;
1505                     MilliSleep(15000);
1506                     //fprintf(stderr,"fvNodesEmpty %d IsInitialBlockDownload(%s) %d\n",(int32_t)fvNodesEmpty,ASSETCHAINS_SYMBOL,(int32_t)IsInitialBlockDownload());
1507
1508                 } while (true);
1509                 //fprintf(stderr,"%s Found peers\n",ASSETCHAINS_SYMBOL);
1510                 miningTimer.start();
1511             }
1512             //
1513             // Create new block
1514             //
1515             unsigned int nTransactionsUpdatedLast = mempool.GetTransactionsUpdated();
1516             CBlockIndex* pindexPrev = chainActive.LastTip();
1517             if ( Mining_height != pindexPrev->GetHeight()+1 )
1518             {
1519                 Mining_height = pindexPrev->GetHeight()+1;
1520                 Mining_start = (uint32_t)time(NULL);
1521             }
1522             if ( ASSETCHAINS_SYMBOL[0] != 0 && ASSETCHAINS_STAKED == 0 )
1523             {
1524                 //fprintf(stderr,"%s create new block ht.%d\n",ASSETCHAINS_SYMBOL,Mining_height);
1525                 //sleep(3);
1526             }
1527
1528 #ifdef ENABLE_WALLET
1529             // notaries always default to staking
1530             CBlockTemplate *ptr = CreateNewBlockWithKey(reservekey, pindexPrev->GetHeight()+1, gpucount, ASSETCHAINS_STAKED != 0 && GetArg("-genproclimit", 0) == 0);
1531 #else
1532             CBlockTemplate *ptr = CreateNewBlockWithKey();
1533 #endif
1534             if ( ptr == 0 )
1535             {
1536                 static uint32_t counter;
1537                 if ( counter++ < 100 && ASSETCHAINS_STAKED == 0 )
1538                     fprintf(stderr,"created illegal block, retry\n");
1539                 sleep(1);
1540                 continue;
1541             }
1542             //fprintf(stderr,"get template\n");
1543             unique_ptr<CBlockTemplate> pblocktemplate(ptr);
1544             if (!pblocktemplate.get())
1545             {
1546                 if (GetArg("-mineraddress", "").empty()) {
1547                     LogPrintf("Error in KomodoMiner: Keypool ran out, please call keypoolrefill before restarting the mining thread\n");
1548                 } else {
1549                     // Should never reach here, because -mineraddress validity is checked in init.cpp
1550                     LogPrintf("Error in KomodoMiner: Invalid -mineraddress\n");
1551                 }
1552                 return;
1553             }
1554             CBlock *pblock = &pblocktemplate->block;
1555             if ( ASSETCHAINS_SYMBOL[0] != 0 )
1556             {
1557                 if ( ASSETCHAINS_REWARD[0] == 0 && !ASSETCHAINS_LASTERA )
1558                 {
1559                     if ( pblock->vtx.size() == 1 && pblock->vtx[0].vout.size() == 1 && Mining_height > ASSETCHAINS_MINHEIGHT )
1560                     {
1561                         static uint32_t counter;
1562                         if ( counter++ < 10 )
1563                             fprintf(stderr,"skip generating %s on-demand block, no tx avail\n",ASSETCHAINS_SYMBOL);
1564                         sleep(10);
1565                         continue;
1566                     } else fprintf(stderr,"%s vouts.%d mining.%d vs %d\n",ASSETCHAINS_SYMBOL,(int32_t)pblock->vtx[0].vout.size(),Mining_height,ASSETCHAINS_MINHEIGHT);
1567                 }
1568             }
1569             IncrementExtraNonce(pblock, pindexPrev, nExtraNonce);
1570             //fprintf(stderr,"Running KomodoMiner.%s with %u transactions in block\n",solver.c_str(),(int32_t)pblock->vtx.size());
1571             LogPrintf("Running KomodoMiner.%s with %u transactions in block (%u bytes)\n",solver.c_str(),pblock->vtx.size(),::GetSerializeSize(*pblock,SER_NETWORK,PROTOCOL_VERSION));
1572             //
1573             // Search
1574             //
1575             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();
1576             pblock->nBits         = GetNextWorkRequired(pindexPrev, pblock, Params().GetConsensus());
1577             savebits = pblock->nBits;
1578             HASHTarget = arith_uint256().SetCompact(savebits);
1579             roundrobin_delay = ROUNDROBIN_DELAY;
1580             if ( ASSETCHAINS_SYMBOL[0] == 0 && notaryid >= 0 )
1581             {
1582                 j = 65;
1583                 if ( (Mining_height >= 235300 && Mining_height < 236000) || (Mining_height % KOMODO_ELECTION_GAP) > 64 || (Mining_height % KOMODO_ELECTION_GAP) == 0 || Mining_height > 1000000 )
1584                 {
1585                     int32_t dispflag = 0;
1586                     if ( notaryid <= 3 || notaryid == 32 || (notaryid >= 43 && notaryid <= 45) &&notaryid == 51 || notaryid == 52 || notaryid == 56 || notaryid == 57 )
1587                         dispflag = 1;
1588                     komodo_eligiblenotary(pubkeys,mids,blocktimes,&nonzpkeys,pindexPrev->GetHeight());
1589                     if ( nonzpkeys > 0 )
1590                     {
1591                         for (i=0; i<33; i++)
1592                             if( pubkeys[0][i] != 0 )
1593                                 break;
1594                         if ( i == 33 )
1595                             externalflag = 1;
1596                         else externalflag = 0;
1597                         if ( IS_KOMODO_NOTARY != 0 )
1598                         {
1599                             for (i=1; i<66; i++)
1600                                 if ( memcmp(pubkeys[i],pubkeys[0],33) == 0 )
1601                                     break;
1602                             if ( externalflag == 0 && i != 66 && mids[i] >= 0 )
1603                                 printf("VIOLATION at %d, notaryid.%d\n",i,mids[i]);
1604                             for (j=gpucount=0; j<65; j++)
1605                             {
1606                                 if ( dispflag != 0 )
1607                                 {
1608                                     if ( mids[j] >= 0 )
1609                                         fprintf(stderr,"%d ",mids[j]);
1610                                     else fprintf(stderr,"GPU ");
1611                                 }
1612                                 if ( mids[j] == -1 )
1613                                     gpucount++;
1614                             }
1615                             if ( dispflag != 0 )
1616                                 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));
1617                         }
1618                         for (j=0; j<65; j++)
1619                             if ( mids[j] == notaryid )
1620                                 break;
1621                         if ( j == 65 )
1622                             KOMODO_LASTMINED = 0;
1623                     } else fprintf(stderr,"no nonz pubkeys\n");
1624                     if ( (Mining_height >= 235300 && Mining_height < 236000) || (j == 65 && Mining_height > KOMODO_MAYBEMINED+1 && Mining_height > KOMODO_LASTMINED+64) )
1625                     {
1626                         HASHTarget = arith_uint256().SetCompact(KOMODO_MINDIFF_NBITS);
1627                         fprintf(stderr,"I am the chosen one for %s ht.%d\n",ASSETCHAINS_SYMBOL,pindexPrev->GetHeight()+1);
1628                     } //else fprintf(stderr,"duplicate at j.%d\n",j);
1629                 } else Mining_start = 0;
1630             } else Mining_start = 0;
1631             if ( ASSETCHAINS_STAKED != 0 )
1632             {
1633                 int32_t percPoS,z; bool fNegative,fOverflow;
1634                 HASHTarget_POW = komodo_PoWtarget(&percPoS,HASHTarget,Mining_height,ASSETCHAINS_STAKED);
1635                 HASHTarget.SetCompact(KOMODO_MINDIFF_NBITS,&fNegative,&fOverflow);
1636                 if ( ASSETCHAINS_STAKED < 100 )
1637                 {
1638                     for (z=31; z>=0; z--)
1639                         fprintf(stderr,"%02x",((uint8_t *)&HASHTarget_POW)[z]);
1640                     fprintf(stderr," PoW for staked coin PoS %d%% vs target %d%%\n",percPoS,(int32_t)ASSETCHAINS_STAKED);
1641                 }
1642             }
1643             while (true)
1644             {
1645                 if ( KOMODO_INSYNC == 0 )
1646                 {
1647                     fprintf(stderr,"Mining when blockchain might not be in sync longest.%d vs %d\n",KOMODO_LONGESTCHAIN,Mining_height);
1648                     if ( KOMODO_LONGESTCHAIN != 0 && Mining_height >= KOMODO_LONGESTCHAIN )
1649                         KOMODO_INSYNC = 1;
1650                     sleep(3);
1651                 }
1652                 // Hash state
1653                 KOMODO_CHOSEN_ONE = 0;
1654
1655                 crypto_generichash_blake2b_state state;
1656                 EhInitialiseState(n, k, state);
1657                 // I = the block header minus nonce and solution.
1658                 CEquihashInput I{*pblock};
1659                 CDataStream ss(SER_NETWORK, PROTOCOL_VERSION);
1660                 ss << I;
1661                 // H(I||...
1662                 crypto_generichash_blake2b_update(&state, (unsigned char*)&ss[0], ss.size());
1663                 // H(I||V||...
1664                 crypto_generichash_blake2b_state curr_state;
1665                 curr_state = state;
1666                 crypto_generichash_blake2b_update(&curr_state,pblock->nNonce.begin(),pblock->nNonce.size());
1667                 // (x_1, x_2, ...) = A(I, V, n, k)
1668                 LogPrint("pow", "Running Equihash solver \"%s\" with nNonce = %s\n",solver, pblock->nNonce.ToString());
1669                 arith_uint256 hashTarget;
1670                 if ( KOMODO_MININGTHREADS > 0 && ASSETCHAINS_STAKED > 0 && ASSETCHAINS_STAKED < 100 && Mining_height > 10 )
1671                     hashTarget = HASHTarget_POW;
1672                 else hashTarget = HASHTarget;
1673                 std::function<bool(std::vector<unsigned char>)> validBlock =
1674 #ifdef ENABLE_WALLET
1675                 [&pblock, &hashTarget, &pwallet, &reservekey, &m_cs, &cancelSolver, &chainparams]
1676 #else
1677                 [&pblock, &hashTarget, &m_cs, &cancelSolver, &chainparams]
1678 #endif
1679                 (std::vector<unsigned char> soln) {
1680                     int32_t z; arith_uint256 h; CBlock B;
1681                     // Write the solution to the hash and compute the result.
1682                     LogPrint("pow", "- Checking solution against target\n");
1683                     pblock->nSolution = soln;
1684                     solutionTargetChecks.increment();
1685                     B = *pblock;
1686                     h = UintToArith256(B.GetHash());
1687                     /*for (z=31; z>=16; z--)
1688                         fprintf(stderr,"%02x",((uint8_t *)&h)[z]);
1689                     fprintf(stderr," mined ");
1690                     for (z=31; z>=16; z--)
1691                         fprintf(stderr,"%02x",((uint8_t *)&HASHTarget)[z]);
1692                     fprintf(stderr," hashTarget ");
1693                     for (z=31; z>=16; z--)
1694                         fprintf(stderr,"%02x",((uint8_t *)&HASHTarget_POW)[z]);
1695                     fprintf(stderr," POW\n");*/
1696                     if ( h > hashTarget )
1697                     {
1698                         //if ( ASSETCHAINS_STAKED != 0 && KOMODO_MININGTHREADS == 0 )
1699                         //    sleep(1);
1700                         return false;
1701                     }
1702                     if ( IS_KOMODO_NOTARY != 0 && B.nTime > GetAdjustedTime() )
1703                     {
1704                         //fprintf(stderr,"need to wait %d seconds to submit block\n",(int32_t)(B.nTime - GetAdjustedTime()));
1705                         while ( GetAdjustedTime() < B.nTime-2 )
1706                         {
1707                             sleep(1);
1708                             if ( chainActive.LastTip()->GetHeight() >= Mining_height )
1709                             {
1710                                 fprintf(stderr,"new block arrived\n");
1711                                 return(false);
1712                             }
1713                         }
1714                     }
1715                     if ( ASSETCHAINS_STAKED == 0 )
1716                     {
1717                         if ( IS_KOMODO_NOTARY != 0 )
1718                         {
1719                             int32_t r;
1720                             if ( (r= ((Mining_height + NOTARY_PUBKEY33[16]) % 64) / 8) > 0 )
1721                                 MilliSleep((rand() % (r * 1000)) + 1000);
1722                         }
1723                     }
1724                     else
1725                     {
1726                         while ( B.nTime-57 > GetAdjustedTime() )
1727                         {
1728                             sleep(1);
1729                             if ( chainActive.LastTip()->GetHeight() >= Mining_height )
1730                                 return(false);
1731                         }
1732                         uint256 tmp = B.GetHash();
1733                         int32_t z; for (z=31; z>=0; z--)
1734                             fprintf(stderr,"%02x",((uint8_t *)&tmp)[z]);
1735                         fprintf(stderr," mined %s block %d!\n",ASSETCHAINS_SYMBOL,Mining_height);
1736                     }
1737                     CValidationState state;
1738                     if ( !TestBlockValidity(state,B, chainActive.LastTip(), true, false))
1739                     {
1740                         h = UintToArith256(B.GetHash());
1741                         for (z=31; z>=0; z--)
1742                             fprintf(stderr,"%02x",((uint8_t *)&h)[z]);
1743                         fprintf(stderr," Invalid block mined, try again\n");
1744                         return(false);
1745                     }
1746                     KOMODO_CHOSEN_ONE = 1;
1747                     // Found a solution
1748                     SetThreadPriority(THREAD_PRIORITY_NORMAL);
1749                     LogPrintf("KomodoMiner:\n");
1750                     LogPrintf("proof-of-work found  \n  hash: %s  \ntarget: %s\n", B.GetHash().GetHex(), HASHTarget.GetHex());
1751 #ifdef ENABLE_WALLET
1752                     if (ProcessBlockFound(&B, *pwallet, reservekey)) {
1753 #else
1754                         if (ProcessBlockFound(&B)) {
1755 #endif
1756                             // Ignore chain updates caused by us
1757                             std::lock_guard<std::mutex> lock{m_cs};
1758                             cancelSolver = false;
1759                         }
1760                         KOMODO_CHOSEN_ONE = 0;
1761                         SetThreadPriority(THREAD_PRIORITY_LOWEST);
1762                         // In regression test mode, stop mining after a block is found.
1763                         if (chainparams.MineBlocksOnDemand()) {
1764                             // Increment here because throwing skips the call below
1765                             ehSolverRuns.increment();
1766                             throw boost::thread_interrupted();
1767                         }
1768                         return true;
1769                     };
1770                     std::function<bool(EhSolverCancelCheck)> cancelled = [&m_cs, &cancelSolver](EhSolverCancelCheck pos) {
1771                         std::lock_guard<std::mutex> lock{m_cs};
1772                         return cancelSolver;
1773                     };
1774
1775                     // TODO: factor this out into a function with the same API for each solver.
1776                     if (solver == "tromp" ) { //&& notaryid >= 0 ) {
1777                         // Create solver and initialize it.
1778                         equi eq(1);
1779                         eq.setstate(&curr_state);
1780
1781                         // Initialization done, start algo driver.
1782                         eq.digit0(0);
1783                         eq.xfull = eq.bfull = eq.hfull = 0;
1784                         eq.showbsizes(0);
1785                         for (u32 r = 1; r < WK; r++) {
1786                             (r&1) ? eq.digitodd(r, 0) : eq.digiteven(r, 0);
1787                             eq.xfull = eq.bfull = eq.hfull = 0;
1788                             eq.showbsizes(r);
1789                         }
1790                         eq.digitK(0);
1791                         ehSolverRuns.increment();
1792
1793                         // Convert solution indices to byte array (decompress) and pass it to validBlock method.
1794                         for (size_t s = 0; s < eq.nsols; s++) {
1795                             LogPrint("pow", "Checking solution %d\n", s+1);
1796                             std::vector<eh_index> index_vector(PROOFSIZE);
1797                             for (size_t i = 0; i < PROOFSIZE; i++) {
1798                                 index_vector[i] = eq.sols[s][i];
1799                             }
1800                             std::vector<unsigned char> sol_char = GetMinimalFromIndices(index_vector, DIGITBITS);
1801
1802                             if (validBlock(sol_char)) {
1803                                 // If we find a POW solution, do not try other solutions
1804                                 // because they become invalid as we created a new block in blockchain.
1805                                 break;
1806                             }
1807                         }
1808                     } else {
1809                         try {
1810                             // If we find a valid block, we rebuild
1811                             bool found = EhOptimisedSolve(n, k, curr_state, validBlock, cancelled);
1812                             ehSolverRuns.increment();
1813                             if (found) {
1814                                 int32_t i; uint256 hash = pblock->GetHash();
1815                                 for (i=0; i<32; i++)
1816                                     fprintf(stderr,"%02x",((uint8_t *)&hash)[i]);
1817                                 fprintf(stderr," <- %s Block found %d\n",ASSETCHAINS_SYMBOL,Mining_height);
1818                                 FOUND_BLOCK = 1;
1819                                 KOMODO_MAYBEMINED = Mining_height;
1820                                 break;
1821                             }
1822                         } catch (EhSolverCancelledException&) {
1823                             LogPrint("pow", "Equihash solver cancelled\n");
1824                             std::lock_guard<std::mutex> lock{m_cs};
1825                             cancelSolver = false;
1826                         }
1827                     }
1828
1829                     // Check for stop or if block needs to be rebuilt
1830                     boost::this_thread::interruption_point();
1831                     // Regtest mode doesn't require peers
1832                     if ( FOUND_BLOCK != 0 )
1833                     {
1834                         FOUND_BLOCK = 0;
1835                         fprintf(stderr,"FOUND_BLOCK!\n");
1836                         //sleep(2000);
1837                     }
1838                     if (vNodes.empty() && chainparams.MiningRequiresPeers())
1839                     {
1840                         if ( ASSETCHAINS_SYMBOL[0] == 0 || Mining_height > ASSETCHAINS_MINHEIGHT )
1841                         {
1842                             fprintf(stderr,"no nodes, break\n");
1843                             break;
1844                         }
1845                     }
1846                     if ((UintToArith256(pblock->nNonce) & 0xffff) == 0xffff)
1847                     {
1848                         //if ( 0 && ASSETCHAINS_SYMBOL[0] != 0 )
1849                         fprintf(stderr,"0xffff, break\n");
1850                         break;
1851                     }
1852                     if (mempool.GetTransactionsUpdated() != nTransactionsUpdatedLast && GetTime() - nStart > 60)
1853                     {
1854                         if ( 0 && ASSETCHAINS_SYMBOL[0] != 0 )
1855                             fprintf(stderr,"timeout, break\n");
1856                         break;
1857                     }
1858                     if ( pindexPrev != chainActive.LastTip() )
1859                     {
1860                         if ( 0 && ASSETCHAINS_SYMBOL[0] != 0 )
1861                             fprintf(stderr,"Tip advanced, break\n");
1862                         break;
1863                     }
1864                     // Update nNonce and nTime
1865                     pblock->nNonce = ArithToUint256(UintToArith256(pblock->nNonce) + 1);
1866                     pblock->nBits = savebits;
1867                     /*if ( NOTARY_PUBKEY33[0] == 0 )
1868                     {
1869                         int32_t percPoS;
1870                         UpdateTime(pblock, consensusParams, pindexPrev);
1871                         if (consensusParams.fPowAllowMinDifficultyBlocks)
1872                         {
1873                             // Changing pblock->nTime can change work required on testnet:
1874                             HASHTarget.SetCompact(pblock->nBits);
1875                             HASHTarget_POW = komodo_PoWtarget(&percPoS,HASHTarget,Mining_height,ASSETCHAINS_STAKED);
1876                         }
1877                     }*/
1878                 }
1879             }
1880         }
1881         catch (const boost::thread_interrupted&)
1882         {
1883             miningTimer.stop();
1884             c.disconnect();
1885             LogPrintf("KomodoMiner terminated\n");
1886             throw;
1887         }
1888         catch (const std::runtime_error &e)
1889         {
1890             miningTimer.stop();
1891             c.disconnect();
1892             LogPrintf("KomodoMiner runtime error: %s\n", e.what());
1893             return;
1894         }
1895         miningTimer.stop();
1896         c.disconnect();
1897     }
1898
1899 #ifdef ENABLE_WALLET
1900     void GenerateBitcoins(bool fGenerate, CWallet* pwallet, int nThreads)
1901 #else
1902     void GenerateBitcoins(bool fGenerate, int nThreads)
1903 #endif
1904     {
1905         // if we are supposed to catch stake cheaters, there must be a valid sapling parameter, we need it at
1906         // initialization, and this is the first time we can get it. store the Sapling address here
1907         extern boost::optional<libzcash::SaplingPaymentAddress> cheatCatcher;
1908         extern std::string VERUS_CHEATCATCHER;
1909         libzcash::PaymentAddress addr = DecodePaymentAddress(VERUS_CHEATCATCHER);
1910         if (VERUS_CHEATCATCHER.size() > 0 && IsValidPaymentAddress(addr))
1911         {
1912             cheatCatcher = boost::get<libzcash::SaplingPaymentAddress>(addr);
1913         }
1914         else
1915         {
1916             if (VERUS_CHEATCATCHER.size() > 0)
1917                 fprintf(stderr, "-cheatcatcher parameter is invalid Sapling payment address\n");
1918         }
1919
1920         static boost::thread_group* minerThreads = NULL;
1921
1922         if (nThreads < 0)
1923             nThreads = GetNumCores();
1924
1925         if (minerThreads != NULL)
1926         {
1927             minerThreads->interrupt_all();
1928             delete minerThreads;
1929             minerThreads = NULL;
1930         }
1931
1932         //fprintf(stderr,"nThreads.%d fGenerate.%d\n",(int32_t)nThreads,fGenerate);
1933         if ( nThreads == 0 && ASSETCHAINS_STAKED )
1934             nThreads = 1;
1935
1936         if ((nThreads == 0 || !fGenerate) && (VERUS_MINTBLOCKS == 0 || pwallet == NULL))
1937             return;
1938
1939         minerThreads = new boost::thread_group();
1940
1941 #ifdef ENABLE_WALLET
1942         if (ASSETCHAINS_LWMAPOS != 0 && VERUS_MINTBLOCKS)
1943         {
1944             minerThreads->create_thread(boost::bind(&VerusStaker, pwallet));
1945         }
1946 #endif
1947
1948         for (int i = 0; i < nThreads; i++) {
1949
1950 #ifdef ENABLE_WALLET
1951             if (ASSETCHAINS_ALGO == ASSETCHAINS_EQUIHASH)
1952                 minerThreads->create_thread(boost::bind(&BitcoinMiner, pwallet));
1953             else
1954                 minerThreads->create_thread(boost::bind(&BitcoinMiner_noeq, pwallet));
1955 #else
1956             if (ASSETCHAINS_ALGO == ASSETCHAINS_EQUIHASH)
1957                 minerThreads->create_thread(&BitcoinMiner);
1958             else
1959                 minerThreads->create_thread(&BitcoinMiner_noeq);
1960 #endif
1961         }
1962     }
1963
1964 #endif // ENABLE_MINING