add signet basic support (signet.cpp)

Co-authored-by: Anthony Towns <aj@erisian.com.au>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/consensus/params.h b/src/consensus/params.h
index 61b1fbc2e5..85ab3f61ef 100644
--- a/src/consensus/params.h
+++ b/src/consensus/params.h
@@ -80,6 +80,13 @@ struct Params {
     int64_t DifficultyAdjustmentInterval() const { return nPowTargetTimespan / nPowTargetSpacing; }
     uint256 nMinimumChainWork;
     uint256 defaultAssumeValid;
+
+    /**
+     * If true, witness commitments contain a payload equal to a Bitcoin Script solution
+     * to the signet challenge. See BIP325.
+     */
+    bool signet_blocks{false};
+    std::vector<uint8_t> signet_challenge;
 };
 } // namespace Consensus