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Add consensus-enforced 0.3% dev fee

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This commit is contained in:
Matt Hess
2025-11-12 17:34:00 +00:00
parent 62c654f77c
commit 2a41ad9670
4 changed files with 112 additions and 47 deletions
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src/side_chain.cpp
+45 -13
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@@ -1752,16 +1752,48 @@ void SideChain::verify(PoolBlock* block)
return;
}
if (shares.size() != block->m_outputAmounts.size()) {
LOGWARN(3, "block at height = " << block->m_sidechainHeight <<
", id = " << block->m_sidechainId <<
", mainchain height = " << block->m_txinGenHeight
<< " has invalid number of outputs: got " << block->m_outputAmounts.size() << ", expected " << shares.size());
block->m_invalid = true;
return;
}
// Expect shares.size() + 1 outputs (dev fee + miner outputs)
if (shares.size() + 1 != block->m_outputAmounts.size()) {
LOGWARN(3, "block at height = " << block->m_sidechainHeight
<< ", id = " << block->m_sidechainId // ADD << here
<< ", mainchain height = " << block->m_txinGenHeight
<< " has invalid number of outputs: got " << block->m_outputAmounts.size() << ", expected " << (shares.size() + 1));
block->m_invalid = true;
return;
}
uint64_t total_reward = std::accumulate(block->m_outputAmounts.begin(), block->m_outputAmounts.end(), 0ULL,
// Validate dev fee (first output)
const PoolBlock::TxOutput& dev_output = block->m_outputAmounts[0];
const uint64_t total_miner_reward = std::accumulate(block->m_outputAmounts.begin() + 1, block->m_outputAmounts.end(), 0ULL,
[](uint64_t a, const PoolBlock::TxOutput& b) { return a + b.m_reward; });
const uint64_t expected_dev_fee = static_cast<uint64_t>(total_miner_reward * (Params::DEV_FEE_PERCENTAGE / 100.0));
if (dev_output.m_reward != expected_dev_fee) {
LOGWARN(3, "block at height = " << block->m_sidechainHeight
<< ", id = " << block->m_sidechainId // ADD << here
<< " has invalid dev fee: got " << dev_output.m_reward << ", expected " << expected_dev_fee);
block->m_invalid = true;
return;
}
// Validate dev fee address
hash expected_dev_eph_key;
uint8_t expected_dev_view_tag;
if (!Params::s_devFeeWallet->get_eph_public_key(block->m_txkeySec, 0, expected_dev_eph_key, expected_dev_view_tag)) {
LOGWARN(3, "block at height = " << block->m_sidechainHeight << " failed to generate dev fee eph key");
block->m_invalid = true;
return;
}
if (block->m_ephPublicKeys[0] != expected_dev_eph_key) {
LOGWARN(3, "block at height = " << block->m_sidechainHeight
<< ", id = " << block->m_sidechainId // ADD << here
<< " has invalid dev fee address");
block->m_invalid = true;
return;
}
uint64_t total_reward = std::accumulate(block->m_outputAmounts.begin() + 1, block->m_outputAmounts.end(), 0ULL,
[](uint64_t a, const PoolBlock::TxOutput& b)
{
return a + b.m_reward;
@@ -1776,7 +1808,7 @@ void SideChain::verify(PoolBlock* block)
return;
}
if (rewards.size() != block->m_outputAmounts.size()) {
if (rewards.size() != block->m_outputAmounts.size() - 1) {
LOGWARN(3, "block at height = " << block->m_sidechainHeight <<
", id = " << block->m_sidechainId <<
", mainchain height = " << block->m_txinGenHeight
@@ -1785,10 +1817,10 @@ void SideChain::verify(PoolBlock* block)
return;
}
for (size_t i = 0, n = rewards.size(); i < n; ++i) {
const PoolBlock::TxOutput& out = block->m_outputAmounts[i];
for (size_t i = 0, n = rewards.size(); i < n; ++i) {
const PoolBlock::TxOutput& out = block->m_outputAmounts[i + 1]; // +1 to skip dev fee
if (rewards[i] != out.m_reward) {
if (rewards[i] != out.m_reward) {
LOGWARN(3, "block at height = " << block->m_sidechainHeight <<
", id = " << block->m_sidechainId <<
", mainchain height = " << block->m_txinGenHeight <<