Merge bitcoin/bitcoin#29547: kernel: chainparams updates for 27.x

d9f30b0 kernel: chainparams updates for 27.x (fanquake)
1611aa1 kernel: update chainTxData for 27.x (fanquake)
af78d31 kernel: update nMinimumChainWork & defaultAssumeValid for 27.x (fanquake)

Pull request description:

  Update chainparams pre `27.x` branch off.

  Note: Remember that some variance is expected in the m_assumed_* sizes.

ACKs for top commit:
  Sjors:
    ACK d9f30b0
  glozow:
    ACK d9f30b0 (checked mainnet locally, checked testnet/signet on block explorers and sanity checked the numbers)
  instagibbs:
    ACK d9f30b0

Tree-SHA512: 6ce65b964334b9d15fff4aa1af6d26fb3ef4eab50b8237fc2cda180230ae724a99d13c9f6b3c58105548d3520c0ca0810f354736132d11793d6c91ad3eeac4c7

Author: fanquake

src/kernel/chainparams.cpp

@@ -104,8 +104,8 @@ class CMainParams : public CChainParams {
         consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1628640000; // August 11th, 2021
         consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 709632; // Approximately November 12th, 2021
 
-        consensus.nMinimumChainWork = uint256S("0x000000000000000000000000000000000000000052b2559353df4117b7348b64");
-        consensus.defaultAssumeValid = uint256S("0x00000000000000000001a0a448d6cf2546b06801389cc030b2b18c6491266815"); // 804000
+        consensus.nMinimumChainWork = uint256S("0x000000000000000000000000000000000000000063c4ebd298db40af57541800");
+        consensus.defaultAssumeValid = uint256S("0x000000000000000000026811d149d4d261995ec5b3f64f439a0a10e1a464af9a"); // 824000
 
         /**
          * The message start string is designed to be unlikely to occur in normal data.
@@ -118,8 +118,8 @@ class CMainParams : public CChainParams {
         pchMessageStart[3] = 0xd9;
         nDefaultPort = 8333;
         nPruneAfterHeight = 100000;
-        m_assumed_blockchain_size = 590;
-        m_assumed_chain_state_size = 9;
+        m_assumed_blockchain_size = 600;
+        m_assumed_chain_state_size = 10;
 
         genesis = CreateGenesisBlock(1231006505, 2083236893, 0x1d00ffff, 1, 50 * COIN);
         consensus.hashGenesisBlock = genesis.GetHash();
@@ -177,10 +177,10 @@ class CMainParams : public CChainParams {
         };
 
         chainTxData = ChainTxData{
-            // Data from RPC: getchaintxstats 4096 00000000000000000001a0a448d6cf2546b06801389cc030b2b18c6491266815
-            .nTime    = 1692502494,
-            .nTxCount = 881818374,
-            .dTxRate  = 5.521964628130412,
+            // Data from RPC: getchaintxstats 4096 000000000000000000026811d149d4d261995ec5b3f64f439a0a10e1a464af9a
+            .nTime    = 1704194835,
+            .nTxCount = 946728933,
+            .dTxRate  = 6.569290261471664,
         };
     }
 };
@@ -222,8 +222,8 @@ class CTestNetParams : public CChainParams {
         consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1628640000; // August 11th, 2021
         consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
 
-        consensus.nMinimumChainWork = uint256S("0x000000000000000000000000000000000000000000000b6a51f415a67c0da307");
-        consensus.defaultAssumeValid = uint256S("0x0000000000000093bcb68c03a9a168ae252572d348a2eaeba2cdf9231d73206f"); // 2500000
+        consensus.nMinimumChainWork = uint256S("0x000000000000000000000000000000000000000000000c59b14e264ba6c15db9");
+        consensus.defaultAssumeValid = uint256S("0x000000000001323071f38f21ea5aae529ece491eadaccce506a59bcc2d968917"); // 2550000
 
         pchMessageStart[0] = 0x0b;
         pchMessageStart[1] = 0x11;
@@ -276,10 +276,10 @@ class CTestNetParams : public CChainParams {
         };
 
         chainTxData = ChainTxData{
-            // Data from RPC: getchaintxstats 4096 0000000000000093bcb68c03a9a168ae252572d348a2eaeba2cdf9231d73206f
-            .nTime    = 1694733634,
-            .nTxCount = 66484552,
-            .dTxRate  = 0.1804908356632494,
+            // Data from RPC: getchaintxstats 4096 000000000001323071f38f21ea5aae529ece491eadaccce506a59bcc2d968917
+            .nTime    = 1703579240,
+            .nTxCount = 67845391,
+            .dTxRate  = 1.464436832560951,
         };
     }
 };
@@ -302,15 +302,15 @@ class SigNetParams : public CChainParams {
             vSeeds.emplace_back("178.128.221.177");
             vSeeds.emplace_back("v7ajjeirttkbnt32wpy3c6w3emwnfr3fkla7hpxcfokr3ysd3kqtzmqd.onion:38333");
 
-            consensus.nMinimumChainWork = uint256S("0x000000000000000000000000000000000000000000000000000001ad46be4862");
-            consensus.defaultAssumeValid = uint256S("0x0000013d778ba3f914530f11f6b69869c9fab54acff85acd7b8201d111f19b7f"); // 150000
+            consensus.nMinimumChainWork = uint256S("0x00000000000000000000000000000000000000000000000000000206e86f08e8");
+            consensus.defaultAssumeValid = uint256S("0x0000000870f15246ba23c16e370a7ffb1fc8a3dcf8cb4492882ed4b0e3d4cd26"); // 180000
             m_assumed_blockchain_size = 1;
             m_assumed_chain_state_size = 0;
             chainTxData = ChainTxData{
-                // Data from RPC: getchaintxstats 4096 0000013d778ba3f914530f11f6b69869c9fab54acff85acd7b8201d111f19b7f
-                .nTime    = 1688366339,
-                .nTxCount = 2262750,
-                .dTxRate  = 0.003414084572046456,
+                // Data from RPC: getchaintxstats 4096 0000000870f15246ba23c16e370a7ffb1fc8a3dcf8cb4492882ed4b0e3d4cd26
+                .nTime    = 1706331472,
+                .nTxCount = 2425380,
+                .dTxRate  = 0.008277759863833788,
             };
         } else {
             bin = *options.challenge;