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Add fixed multi-algo chainwork scaling

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This commit is contained in:
Capri 2026-09-17 16:07:32 +00:00
commit ef32ac43a6
Signed by: VextaProject
SSH key fingerprint: SHA256:739BZv8LvIDY2tR7lXLy/IQ6MaGTQtYcG9GNvCjmpVM
4 changed files with 170 additions and 5 deletions
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100
src/test/pow_tests.cpp
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@ -153,6 +153,106 @@ BOOST_AUTO_TEST_CASE(MultiAlgo_chainwork_normalization_test)
BOOST_AUTO_TEST_CASE(MultiAlgo_chainwork_scale_test)
{
auto chainParams = CreateChainParams(*m_node.args, CBaseChainParams::MAIN);
auto consensus = chainParams->GetConsensus();
consensus.randomXActivationHeight = 2;
CBlockIndex genesisLike;
genesisLike.nHeight = 0;
genesisLike.nTime = 1800000000;
genesisLike.nBits =
UintToArith256(consensus.powLimit).GetCompact();
genesisLike.nVersion =
BLOCK_VERSION_DEFAULT | BLOCK_VERSION_SHA256D;
CBlockIndex parent;
parent.pprev = &genesisLike;
parent.nHeight = 1;
parent.nTime =
genesisLike.nTime + consensus.nPowTargetSpacing;
parent.nBits =
UintToArith256(consensus.powLimit).GetCompact();
parent.nVersion =
BLOCK_VERSION_DEFAULT | BLOCK_VERSION_SHA256D;
parent.lastAlgoBlocks[ALGO_SHA256D] = &genesisLike;
CBlockIndex child;
child.pprev = &parent;
child.nHeight = 2;
child.nTime =
parent.nTime + consensus.nPowTargetSpacing;
child.nVersion =
BLOCK_VERSION_DEFAULT | BLOCK_VERSION_SHA256D;
child.nBits =
GetNextWorkRequired(
&parent,
nullptr,
consensus,
ALGO_SHA256D);
consensus.multiAlgoChainworkScaleNumerator = 1;
consensus.multiAlgoChainworkScaleDenominator = 1;
const arith_uint256 unscaled =
GetBlockProof(child, consensus);
BOOST_REQUIRE(unscaled > 0);
consensus.multiAlgoChainworkScaleNumerator = 2;
consensus.multiAlgoChainworkScaleDenominator = 1;
BOOST_CHECK(
GetBlockProof(child, consensus) ==
unscaled * 2);
consensus.multiAlgoChainworkScaleNumerator = 1;
consensus.multiAlgoChainworkScaleDenominator = 2;
BOOST_CHECK(
GetBlockProof(child, consensus) ==
unscaled / 2);
consensus.multiAlgoChainworkScaleNumerator = 1;
consensus.multiAlgoChainworkScaleDenominator = 0;
BOOST_CHECK(
GetBlockProof(child, consensus) == 0);
consensus.multiAlgoChainworkScaleNumerator = 0;
consensus.multiAlgoChainworkScaleDenominator = 1;
BOOST_CHECK(
GetBlockProof(child, consensus) == 0);
// Force the overflow guard using consensus state that produces an
// extremely large normalized work value. Post-activation chainwork is
// derived from expected per-algo targets, not from child.nBits.
auto overflowConsensus = consensus;
overflowConsensus.fPowNoRetargeting = true;
overflowConsensus.randomXActivationHeight = 2;
arith_uint256 tinyTarget(1);
const unsigned int tinyBits = tinyTarget.GetCompact();
overflowConsensus.randomXInitialTarget =
ArithToUint256(tinyTarget);
CBlockIndex overflowParent = parent;
overflowParent.nBits = tinyBits;
overflowParent.nVersion =
BLOCK_VERSION_DEFAULT | BLOCK_VERSION_SHA256D;
CBlockIndex overflowChild = child;
overflowChild.pprev = &overflowParent;
overflowChild.nHeight = 2;
overflowConsensus.multiAlgoChainworkScaleNumerator =
std::numeric_limits<uint32_t>::max();
overflowConsensus.multiAlgoChainworkScaleDenominator = 1;
BOOST_CHECK(
GetBlockProof(overflowChild, overflowConsensus) == 0);
}
BOOST_AUTO_TEST_CASE(MultiAlgo_chainwork_branch_accumulation_test)
{
auto chainParams = CreateChainParams(*m_node.args, CBaseChainParams::MAIN);