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Adjusted mainnet genesis block difficulty.

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Additional check for Cryptonote header consistency with block header.
This commit is contained in:
Just Wonder 2020-01-10 21:08:35 -08:00
parent d8d4ea33cb
commit bb09e64483
3 changed files with 20 additions and 9 deletions
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10
src/chainparams.cpp
View File

@ -99,10 +99,10 @@ public:
consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 1517356801; // January 31st, 2018
// The best chain should have at least this much work.
consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000000000000000000000100000");
consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000000000000000000001000000");
// By default assume that the signatures in ancestors of this block are valid.
consensus.defaultAssumeValid = uint256S("0x66f49ad85624c33e4fd61aa45c54012509ed4a53308908dd07f56346c7939273");
consensus.defaultAssumeValid = uint256S("0x00");
/**
* The message start string is designed to be unlikely to occur in normal data.
@ -118,7 +118,7 @@ public:
const uint32_t genesisBlockReward = 0.00001 * COIN; // A small reward for the core developers :-)
//TODO: target: 0x1e0fffff, update timestampe and nonce.
genesis = CreateGenesisBlock(1553145843, 1621, 0x1f0ffff0, 1, genesisBlockReward);
genesis = CreateGenesisBlock(1553145843, 1621, 0x1e0fffff, 1, genesisBlockReward);
consensus.hashGenesisBlock = genesis.GetHash();
assert(consensus.hashGenesisBlock == uint256S("0x2f6d82a919bfc055f9e66e82bd613050cb835f969563f217737c9ef631668f6c"));
assert(genesis.hashMerkleRoot == uint256S("0x285139132ff0b33d399aae61053d19b34fe8e483053142d530d62d90881183c9"));
@ -194,10 +194,10 @@ public:
consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 1517356801; // January 31st, 2018
// The best chain should have at least this much work.
consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000000000000000000000001000");
consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000000000000000000000001000");
// By default assume that the signatures in ancestors of this block are valid.
consensus.defaultAssumeValid = uint256S("0x1efb29c8187d5a496a33377941d1df415169c3ce5d8c05d055f25b683ec3f9a3");
consensus.defaultAssumeValid = uint256S("0x00");
pchMessageStart[0] = 0xfe;
pchMessageStart[1] = 0xec;

17
src/primitives/block.cpp
View File

@ -22,9 +22,21 @@ uint256 CBlockHeader::GetOriginalBlockHash() const
return hashWriter.GetHash();
}
// prev_id of CN header is used to store the kevacoin block hash.
// The value of prev_id and block hash must be the same to prove
// that PoW has been properly done.
bool CBlockHeader::isCNConsistent() const
{
return (GetOriginalBlockHash() == cnHeader.prev_id);
}
uint256 CBlockHeader::GetHash() const
{
uint256 thash;
if (!isCNConsistent()) {
memset(thash.begin(), 0xff, thash.size());
return thash;
}
cryptonote::blobdata blob = cryptonote::t_serializable_object_to_blob(cnHeader);
cn_fast_hash(blob.data(), blob.size(), BEGIN(thash));
return thash;
@ -33,10 +45,7 @@ uint256 CBlockHeader::GetHash() const
uint256 CBlockHeader::GetPoWHash() const
{
uint256 thash;
// prev_id of CN header is used to store the kevacoin block hash.
// The value of prev_id and block hash must be the same to prove
// that PoW has been properly done.
if (GetOriginalBlockHash() != cnHeader.prev_id) {
if (!isCNConsistent()) {
memset(thash.begin(), 0xff, thash.size());
return thash;
}

2
src/primitives/block.h
View File

@ -184,6 +184,8 @@ public:
legacyMode = legacy;
}
bool isCNConsistent() const;
bool isLegacy()
{
return legacyMode;