Merge bitcoin/bitcoin#21989: test: Use COINBASE_MATURITY in functional tests

bfa9309ad606102f24c9bd3c33dfe78949f09418 Use COINBASE_MATURITY constant in functional tests. (Kiminuo)
525448df9dc2ab6b7e960ff138956ae3e2efdf60 Move COINBASE_MATURITY from `feature_nulldummy` test to `blocktools`. (Kiminuo)

Pull request description:

  `COINBASE_MATURITY` constant was added to `feature_nulldummy` test in #21373. This PR moves the constant to `blocktools.py` file and uses the constant in more tests as suggested [here](https://github.com/bitcoin/bitcoin/pull/21373#discussion_r605418462).

  Edit: Goal of this PR is to replace integer constants with `COINBASE_MATURITY` but not necessarily in *all* cases because that would mean to read and fully understand all tests. That's out of my time constraints. Any reports where `COINBASE_MATURITY` should be used are welcome though!

ACKs for top commit:
  theStack:
    ACK bfa9309ad606102f24c9bd3c33dfe78949f09418 🌇

Tree-SHA512: 01f04645f05a39028681f355cf3d42dd63ea3303f76d93c430e0fdce441934358a2d847a54e6068d61932f1b75e1d406f51859b057b3e4b569f7083915cb317f

47 files changed, 135 insertions, 68 deletions

diff --git a/test/functional/feature_assumevalid.py b/test/functional/feature_assumevalid.py
index 1a148f04f4..a4480307a7 100755
--- a/test/functional/feature_assumevalid.py
+++ b/test/functional/feature_assumevalid.py
@@ -31,6 +31,7 @@ Start three nodes:
 """
 
 from test_framework.blocktools import (
+    COINBASE_MATURITY,
     create_block,
     create_coinbase,
 )
@@ -161,8 +162,8 @@ class AssumeValidTest(BitcoinTestFramework):
 
         # Send blocks to node0. Block 102 will be rejected.
         self.send_blocks_until_disconnected(p2p0)
-        self.wait_until(lambda: self.nodes[0].getblockcount() >= 101)
-        assert_equal(self.nodes[0].getblockcount(), 101)
+        self.wait_until(lambda: self.nodes[0].getblockcount() >= COINBASE_MATURITY + 1)
+        assert_equal(self.nodes[0].getblockcount(), COINBASE_MATURITY + 1)
 
         # Send all blocks to node1. All blocks will be accepted.
         for i in range(2202):
@@ -173,8 +174,8 @@ class AssumeValidTest(BitcoinTestFramework):
 
         # Send blocks to node2. Block 102 will be rejected.
         self.send_blocks_until_disconnected(p2p2)
-        self.wait_until(lambda: self.nodes[2].getblockcount() >= 101)
-        assert_equal(self.nodes[2].getblockcount(), 101)
+        self.wait_until(lambda: self.nodes[2].getblockcount() >= COINBASE_MATURITY + 1)
+        assert_equal(self.nodes[2].getblockcount(), COINBASE_MATURITY + 1)
 
 
 if __name__ == '__main__':
diff --git a/test/functional/feature_backwards_compatibility.py b/test/functional/feature_backwards_compatibility.py
index e6a53b52db..c712f7141c 100755
--- a/test/functional/feature_backwards_compatibility.py
+++ b/test/functional/feature_backwards_compatibility.py
@@ -22,6 +22,7 @@ needs an older patch version.
 import os
 import shutil
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.descriptors import descsum_create
 
@@ -64,13 +65,13 @@ class BackwardsCompatibilityTest(BitcoinTestFramework):
         self.import_deterministic_coinbase_privkeys()
 
     def run_test(self):
-        self.nodes[0].generatetoaddress(101, self.nodes[0].getnewaddress())
+        self.nodes[0].generatetoaddress(COINBASE_MATURITY + 1, self.nodes[0].getnewaddress())
 
         self.sync_blocks()
 
         # Sanity check the test framework:
         res = self.nodes[self.num_nodes - 1].getblockchaininfo()
-        assert_equal(res['blocks'], 101)
+        assert_equal(res['blocks'], COINBASE_MATURITY + 1)
 
         node_master = self.nodes[self.num_nodes - 5]
         node_v19 = self.nodes[self.num_nodes - 4]
diff --git a/test/functional/feature_coinstatsindex.py b/test/functional/feature_coinstatsindex.py
index d3adde5cc5..cf270b25ee 100755
--- a/test/functional/feature_coinstatsindex.py
+++ b/test/functional/feature_coinstatsindex.py
@@ -12,6 +12,7 @@ the index.
 from decimal import Decimal
 
 from test_framework.blocktools import (
+    COINBASE_MATURITY,
     create_block,
     create_coinbase,
 )
@@ -68,7 +69,7 @@ class CoinStatsIndexTest(BitcoinTestFramework):
         index_hash_options = ['none', 'muhash']
 
         # Generate a normal transaction and mine it
-        node.generate(101)
+        node.generate(COINBASE_MATURITY + 1)
         address = self.nodes[0].get_deterministic_priv_key().address
         node.sendtoaddress(address=address, amount=10, subtractfeefromamount=True)
         node.generate(1)
diff --git a/test/functional/feature_loadblock.py b/test/functional/feature_loadblock.py
index 0a457ca17f..14f64d63a2 100755
--- a/test/functional/feature_loadblock.py
+++ b/test/functional/feature_loadblock.py
@@ -16,6 +16,7 @@ import sys
 import tempfile
 import urllib
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import assert_equal
 
@@ -28,7 +29,7 @@ class LoadblockTest(BitcoinTestFramework):
 
     def run_test(self):
         self.nodes[1].setnetworkactive(state=False)
-        self.nodes[0].generate(100)
+        self.nodes[0].generate(COINBASE_MATURITY)
 
         # Parsing the url of our node to get settings for config file
         data_dir = self.nodes[0].datadir
diff --git a/test/functional/feature_nulldummy.py b/test/functional/feature_nulldummy.py
index c7981d31dc..02e387c7ee 100755
--- a/test/functional/feature_nulldummy.py
+++ b/test/functional/feature_nulldummy.py
@@ -14,13 +14,18 @@ Generate COINBASE_MATURITY (CB) more blocks to ensure the coinbases are mature.
 """
 import time
 
-from test_framework.blocktools import NORMAL_GBT_REQUEST_PARAMS, create_block, create_transaction, add_witness_commitment
+from test_framework.blocktools import (
+    COINBASE_MATURITY,
+    NORMAL_GBT_REQUEST_PARAMS,
+    add_witness_commitment,
+    create_block,
+    create_transaction,
+)
 from test_framework.messages import CTransaction
 from test_framework.script import CScript
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import assert_equal, assert_raises_rpc_error
 
-COINBASE_MATURITY = 100
 NULLDUMMY_ERROR = "non-mandatory-script-verify-flag (Dummy CHECKMULTISIG argument must be zero)"
 
 def trueDummy(tx):
diff --git a/test/functional/feature_rbf.py b/test/functional/feature_rbf.py
index 945880cc3b..344db5f652 100755
--- a/test/functional/feature_rbf.py
+++ b/test/functional/feature_rbf.py
@@ -6,6 +6,7 @@
 
 from decimal import Decimal
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.messages import COIN, COutPoint, CTransaction, CTxIn, CTxOut
 from test_framework.script import CScript, OP_DROP
 from test_framework.test_framework import BitcoinTestFramework
@@ -27,7 +28,7 @@ def make_utxo(node, amount, confirmed=True, scriptPubKey=DUMMY_P2WPKH_SCRIPT):
     """
     fee = 1*COIN
     while node.getbalance() < satoshi_round((amount + fee)/COIN):
-        node.generate(100)
+        node.generate(COINBASE_MATURITY)
 
     new_addr = node.getnewaddress()
     txid = node.sendtoaddress(new_addr, satoshi_round((amount+fee)/COIN))
diff --git a/test/functional/feature_taproot.py b/test/functional/feature_taproot.py
index 183a43abd4..fc04853199 100755
--- a/test/functional/feature_taproot.py
+++ b/test/functional/feature_taproot.py
@@ -5,6 +5,7 @@
 # Test Taproot softfork (BIPs 340-342)
 
 from test_framework.blocktools import (
+    COINBASE_MATURITY,
     create_coinbase,
     create_block,
     add_witness_commitment,
@@ -1440,7 +1441,7 @@ class TaprootTest(BitcoinTestFramework):
     def run_test(self):
         # Post-taproot activation tests go first (pre-taproot tests' blocks are invalid post-taproot).
         self.log.info("Post-activation tests...")
-        self.nodes[1].generate(101)
+        self.nodes[1].generate(COINBASE_MATURITY + 1)
         self.test_spenders(self.nodes[1], spenders_taproot_active(), input_counts=[1, 2, 2, 2, 2, 3])
 
         # Re-connect nodes in case they have been disconnected
diff --git a/test/functional/interface_bitcoin_cli.py b/test/functional/interface_bitcoin_cli.py
index b5ce18a48b..30cd499b3f 100755
--- a/test/functional/interface_bitcoin_cli.py
+++ b/test/functional/interface_bitcoin_cli.py
@@ -5,6 +5,8 @@
 """Test bitcoin-cli"""
 
 from decimal import Decimal
+
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_equal,
@@ -16,7 +18,7 @@ from test_framework.util import (
 # The block reward of coinbaseoutput.nValue (50) BTC/block matures after
 # COINBASE_MATURITY (100) blocks. Therefore, after mining 101 blocks we expect
 # node 0 to have a balance of (BLOCKS - COINBASE_MATURITY) * 50 BTC/block.
-BLOCKS = 101
+BLOCKS = COINBASE_MATURITY + 1
 BALANCE = (BLOCKS - 100) * 50
 
 JSON_PARSING_ERROR = 'error: Error parsing JSON: foo'
diff --git a/test/functional/mempool_compatibility.py b/test/functional/mempool_compatibility.py
index eb08765ebf..6de6778909 100755
--- a/test/functional/mempool_compatibility.py
+++ b/test/functional/mempool_compatibility.py
@@ -15,6 +15,7 @@ Only v0.15.2 is required by this test. The rest is used in other backwards compa
 
 import os
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.wallet import MiniWallet
 
@@ -41,7 +42,7 @@ class MempoolCompatibilityTest(BitcoinTestFramework):
         old_node, new_node = self.nodes
         new_wallet = MiniWallet(new_node)
         new_wallet.generate(1)
-        new_node.generate(100)
+        new_node.generate(COINBASE_MATURITY)
         # Sync the nodes to ensure old_node has the block that contains the coinbase that new_wallet will spend.
         # Otherwise, because coinbases are only valid in a block and not as loose txns, if the nodes aren't synced
         # unbroadcasted_tx won't pass old_node's `MemPoolAccept::PreChecks`.
diff --git a/test/functional/mempool_expiry.py b/test/functional/mempool_expiry.py
index 4c46075ae9..7d1bfef333 100755
--- a/test/functional/mempool_expiry.py
+++ b/test/functional/mempool_expiry.py
@@ -12,6 +12,7 @@ definable expiry timeout via the '-mempoolexpiry=<n>' command line argument
 
 from datetime import timedelta
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_equal,
@@ -36,7 +37,7 @@ class MempoolExpiryTest(BitcoinTestFramework):
 
         # Add enough mature utxos to the wallet so that all txs spend confirmed coins.
         self.wallet.generate(4)
-        node.generate(100)
+        node.generate(COINBASE_MATURITY)
 
         # Send a parent transaction that will expire.
         parent_txid = self.wallet.send_self_transfer(from_node=node)['txid']
diff --git a/test/functional/mempool_package_onemore.py b/test/functional/mempool_package_onemore.py
index 884a2fef11..1e9895e621 100755
--- a/test/functional/mempool_package_onemore.py
+++ b/test/functional/mempool_package_onemore.py
@@ -9,6 +9,7 @@
 
 from decimal import Decimal
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import assert_equal, assert_raises_rpc_error, satoshi_round
 
@@ -42,7 +43,7 @@ class MempoolPackagesTest(BitcoinTestFramework):
 
     def run_test(self):
         # Mine some blocks and have them mature.
-        self.nodes[0].generate(101)
+        self.nodes[0].generate(COINBASE_MATURITY + 1)
         utxo = self.nodes[0].listunspent(10)
         txid = utxo[0]['txid']
         vout = utxo[0]['vout']
diff --git a/test/functional/mempool_packages.py b/test/functional/mempool_packages.py
index 461f9237ff..606717d890 100755
--- a/test/functional/mempool_packages.py
+++ b/test/functional/mempool_packages.py
@@ -6,6 +6,7 @@
 
 from decimal import Decimal
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.messages import COIN
 from test_framework.p2p import P2PTxInvStore
 from test_framework.test_framework import BitcoinTestFramework
@@ -59,7 +60,7 @@ class MempoolPackagesTest(BitcoinTestFramework):
     def run_test(self):
         # Mine some blocks and have them mature.
         peer_inv_store = self.nodes[0].add_p2p_connection(P2PTxInvStore()) # keep track of invs
-        self.nodes[0].generate(101)
+        self.nodes[0].generate(COINBASE_MATURITY + 1)
         utxo = self.nodes[0].listunspent(10)
         txid = utxo[0]['txid']
         vout = utxo[0]['vout']
diff --git a/test/functional/mempool_reorg.py b/test/functional/mempool_reorg.py
index 8e1f87e42c..a815146eae 100755
--- a/test/functional/mempool_reorg.py
+++ b/test/functional/mempool_reorg.py
@@ -8,7 +8,10 @@ Test re-org scenarios with a mempool that contains transactions
 that spend (directly or indirectly) coinbase transactions.
 """
 
-from test_framework.blocktools import create_raw_transaction
+from test_framework.blocktools import (
+    COINBASE_MATURITY,
+    create_raw_transaction,
+)
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import assert_equal, assert_raises_rpc_error
 
@@ -44,7 +47,7 @@ class MempoolCoinbaseTest(BitcoinTestFramework):
         # 3. Indirect (coinbase and child both in chain) : spend_103 and spend_103_1
         # Use invalidatblock to make all of the above coinbase spends invalid (immature coinbase),
         # and make sure the mempool code behaves correctly.
-        b = [self.nodes[0].getblockhash(n) for n in range(101, 105)]
+        b = [self.nodes[0].getblockhash(n) for n in range(COINBASE_MATURITY + 1, COINBASE_MATURITY + 5)]
         coinbase_txids = [self.nodes[0].getblock(h)['tx'][0] for h in b]
         spend_101_raw = create_raw_transaction(self.nodes[0], coinbase_txids[1], node1_address, amount=49.99)
         spend_102_raw = create_raw_transaction(self.nodes[0], coinbase_txids[2], node0_address, amount=49.99)
diff --git a/test/functional/mempool_resurrect.py b/test/functional/mempool_resurrect.py
index 4aa58270b6..1b5ca7e15a 100755
--- a/test/functional/mempool_resurrect.py
+++ b/test/functional/mempool_resurrect.py
@@ -4,6 +4,7 @@
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test resurrection of mined transactions when the blockchain is re-organized."""
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import assert_equal
 from test_framework.wallet import MiniWallet
@@ -20,7 +21,7 @@ class MempoolCoinbaseTest(BitcoinTestFramework):
 
         # Add enough mature utxos to the wallet so that all txs spend confirmed coins
         wallet.generate(3)
-        node.generate(100)
+        node.generate(COINBASE_MATURITY)
 
         # Spend block 1/2/3's coinbase transactions
         # Mine a block
diff --git a/test/functional/mining_getblocktemplate_longpoll.py b/test/functional/mining_getblocktemplate_longpoll.py
index cc32f78e2e..715b68e04c 100755
--- a/test/functional/mining_getblocktemplate_longpoll.py
+++ b/test/functional/mining_getblocktemplate_longpoll.py
@@ -8,6 +8,7 @@ from decimal import Decimal
 import random
 import threading
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import get_rpc_proxy
 from test_framework.wallet import MiniWallet
@@ -62,7 +63,7 @@ class GetBlockTemplateLPTest(BitcoinTestFramework):
         assert not thr.is_alive()
 
         # Add enough mature utxos to the wallets, so that all txs spend confirmed coins
-        self.nodes[0].generate(100)
+        self.nodes[0].generate(COINBASE_MATURITY)
         self.sync_blocks()
 
         self.log.info("Test that introducing a new transaction into the mempool will terminate the longpoll")
diff --git a/test/functional/p2p_blocksonly.py b/test/functional/p2p_blocksonly.py
index ab2556cd72..6409d4ea82 100755
--- a/test/functional/p2p_blocksonly.py
+++ b/test/functional/p2p_blocksonly.py
@@ -6,6 +6,7 @@
 
 import time
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.messages import msg_tx
 from test_framework.p2p import P2PInterface, P2PTxInvStore
 from test_framework.test_framework import BitcoinTestFramework
@@ -23,7 +24,7 @@ class P2PBlocksOnly(BitcoinTestFramework):
         self.miniwallet = MiniWallet(self.nodes[0])
         # Add enough mature utxos to the wallet, so that all txs spend confirmed coins
         self.miniwallet.generate(2)
-        self.nodes[0].generate(100)
+        self.nodes[0].generate(COINBASE_MATURITY)
 
         self.blocksonly_mode_tests()
         self.blocks_relay_conn_tests()
diff --git a/test/functional/p2p_compactblocks.py b/test/functional/p2p_compactblocks.py
index 55573efc06..3e4f2f974d 100755
--- a/test/functional/p2p_compactblocks.py
+++ b/test/functional/p2p_compactblocks.py
@@ -9,7 +9,12 @@ Version 2 compact blocks are post-segwit (wtxids)
 """
 import random
 
-from test_framework.blocktools import create_block, NORMAL_GBT_REQUEST_PARAMS, add_witness_commitment
+from test_framework.blocktools import (
+    COINBASE_MATURITY,
+    NORMAL_GBT_REQUEST_PARAMS,
+    add_witness_commitment,
+    create_block,
+)
 from test_framework.messages import BlockTransactions, BlockTransactionsRequest, calculate_shortid, CBlock, CBlockHeader, CInv, COutPoint, CTransaction, CTxIn, CTxInWitness, CTxOut, FromHex, HeaderAndShortIDs, msg_no_witness_block, msg_no_witness_blocktxn, msg_cmpctblock, msg_getblocktxn, msg_getdata, msg_getheaders, msg_headers, msg_inv, msg_sendcmpct, msg_sendheaders, msg_tx, msg_block, msg_blocktxn, MSG_BLOCK, MSG_CMPCT_BLOCK, MSG_WITNESS_FLAG, NODE_NETWORK, P2PHeaderAndShortIDs, PrefilledTransaction, ser_uint256, ToHex
 from test_framework.p2p import p2p_lock, P2PInterface
 from test_framework.script import CScript, OP_TRUE, OP_DROP
@@ -115,7 +120,7 @@ class CompactBlocksTest(BitcoinTestFramework):
         block = self.build_block_on_tip(self.nodes[0])
         self.segwit_node.send_and_ping(msg_no_witness_block(block))
         assert int(self.nodes[0].getbestblockhash(), 16) == block.sha256
-        self.nodes[0].generatetoaddress(100, self.nodes[0].getnewaddress(address_type="bech32"))
+        self.nodes[0].generatetoaddress(COINBASE_MATURITY, self.nodes[0].getnewaddress(address_type="bech32"))
 
         total_value = block.vtx[0].vout[0].nValue
         out_value = total_value // 10
@@ -226,7 +231,7 @@ class CompactBlocksTest(BitcoinTestFramework):
 
     # This test actually causes bitcoind to (reasonably!) disconnect us, so do this last.
     def test_invalid_cmpctblock_message(self):
-        self.nodes[0].generate(101)
+        self.nodes[0].generate(COINBASE_MATURITY + 1)
         block = self.build_block_on_tip(self.nodes[0])
 
         cmpct_block = P2PHeaderAndShortIDs()
@@ -244,7 +249,7 @@ class CompactBlocksTest(BitcoinTestFramework):
         version = test_node.cmpct_version
         node = self.nodes[0]
         # Generate a bunch of transactions.
-        node.generate(101)
+        node.generate(COINBASE_MATURITY + 1)
         num_transactions = 25
         address = node.getnewaddress()
 
diff --git a/test/functional/p2p_eviction.py b/test/functional/p2p_eviction.py
index d60aa5b383..a525996493 100755
--- a/test/functional/p2p_eviction.py
+++ b/test/functional/p2p_eviction.py
@@ -15,7 +15,11 @@ Therefore, this test is limited to the remaining protection criteria.
 
 import time
 
-from test_framework.blocktools import create_block, create_coinbase
+from test_framework.blocktools import (
+    COINBASE_MATURITY,
+    create_block,
+    create_coinbase,
+)
 from test_framework.messages import CTransaction, FromHex, msg_pong, msg_tx
 from test_framework.p2p import P2PDataStore, P2PInterface
 from test_framework.test_framework import BitcoinTestFramework
@@ -45,7 +49,7 @@ class P2PEvict(BitcoinTestFramework):
         protected_peers = set()  # peers that we expect to be protected from eviction
         current_peer = -1
         node = self.nodes[0]
-        node.generatetoaddress(101, node.get_deterministic_priv_key().address)
+        node.generatetoaddress(COINBASE_MATURITY + 1, node.get_deterministic_priv_key().address)
 
         self.log.info("Create 4 peers and protect them from eviction by sending us a block")
         for _ in range(4):
diff --git a/test/functional/p2p_feefilter.py b/test/functional/p2p_feefilter.py
index 52dc4de3bd..0175b9f6c0 100755
--- a/test/functional/p2p_feefilter.py
+++ b/test/functional/p2p_feefilter.py
@@ -6,6 +6,7 @@
 
 from decimal import Decimal
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.messages import MSG_TX, MSG_WTX, msg_feefilter
 from test_framework.p2p import P2PInterface, p2p_lock
 from test_framework.test_framework import BitcoinTestFramework
@@ -81,7 +82,7 @@ class FeeFilterTest(BitcoinTestFramework):
         miniwallet = MiniWallet(node1)
         # Add enough mature utxos to the wallet, so that all txs spend confirmed coins
         miniwallet.generate(5)
-        node1.generate(100)
+        node1.generate(COINBASE_MATURITY)
 
         conn = self.nodes[0].add_p2p_connection(TestP2PConn())
 
diff --git a/test/functional/p2p_leak_tx.py b/test/functional/p2p_leak_tx.py
index a45f792e81..9a4ceb86ae 100755
--- a/test/functional/p2p_leak_tx.py
+++ b/test/functional/p2p_leak_tx.py
@@ -4,6 +4,7 @@
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test that we don't leak txs to inbound peers that we haven't yet announced to"""
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.messages import msg_getdata, CInv, MSG_TX
 from test_framework.p2p import p2p_lock, P2PDataStore
 from test_framework.test_framework import BitcoinTestFramework
@@ -27,7 +28,7 @@ class P2PLeakTxTest(BitcoinTestFramework):
         miniwallet = MiniWallet(gen_node)
         # Add enough mature utxos to the wallet, so that all txs spend confirmed coins
         miniwallet.generate(1)
-        gen_node.generate(100)
+        gen_node.generate(COINBASE_MATURITY)
 
         inbound_peer = self.nodes[0].add_p2p_connection(P2PNode())  # An "attacking" inbound peer
 
diff --git a/test/functional/rpc_createmultisig.py b/test/functional/rpc_createmultisig.py
index 19f0d5765a..af515f3a27 100755
--- a/test/functional/rpc_createmultisig.py
+++ b/test/functional/rpc_createmultisig.py
@@ -9,6 +9,7 @@ import itertools
 import json
 import os
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.authproxy import JSONRPCException
 from test_framework.descriptors import descsum_create, drop_origins
 from test_framework.key import ECPubKey, ECKey
@@ -109,7 +110,7 @@ class RpcCreateMultiSigTest(BitcoinTestFramework):
 
     def checkbalances(self):
         node0, node1, node2 = self.nodes
-        node0.generate(100)
+        node0.generate(COINBASE_MATURITY)
         self.sync_all()
 
         bal0 = node0.getbalance()
diff --git a/test/functional/rpc_dumptxoutset.py b/test/functional/rpc_dumptxoutset.py
index dc469ba552..3efbdab013 100755
--- a/test/functional/rpc_dumptxoutset.py
+++ b/test/functional/rpc_dumptxoutset.py
@@ -4,6 +4,8 @@
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test the generation of UTXO snapshots using `dumptxoutset`.
 """
+
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import assert_equal, assert_raises_rpc_error
 
@@ -21,7 +23,7 @@ class DumptxoutsetTest(BitcoinTestFramework):
         node = self.nodes[0]
         mocktime = node.getblockheader(node.getblockhash(0))['time'] + 1
         node.setmocktime(mocktime)
-        node.generate(100)
+        node.generate(COINBASE_MATURITY)
 
         FILENAME = 'txoutset.dat'
         out = node.dumptxoutset(FILENAME)
diff --git a/test/functional/rpc_getblockstats.py b/test/functional/rpc_getblockstats.py
index 57794ae973..4af518c870 100755
--- a/test/functional/rpc_getblockstats.py
+++ b/test/functional/rpc_getblockstats.py
@@ -6,6 +6,8 @@
 #
 # Test getblockstats rpc call
 #
+
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_equal,
@@ -41,7 +43,7 @@ class GetblockstatsTest(BitcoinTestFramework):
     def generate_test_data(self, filename):
         mocktime = 1525107225
         self.nodes[0].setmocktime(mocktime)
-        self.nodes[0].generate(101)
+        self.nodes[0].generate(COINBASE_MATURITY + 1)
 
         address = self.nodes[0].get_deterministic_priv_key().address
         self.nodes[0].sendtoaddress(address=address, amount=10, subtractfeefromamount=True)
diff --git a/test/functional/rpc_net.py b/test/functional/rpc_net.py
index 9a2817a6ee..6e5ef770d1 100755
--- a/test/functional/rpc_net.py
+++ b/test/functional/rpc_net.py
@@ -11,6 +11,7 @@ from decimal import Decimal
 from itertools import product
 import time
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.p2p import P2PInterface
 import test_framework.messages
 from test_framework.messages import (
@@ -53,7 +54,7 @@ class NetTest(BitcoinTestFramework):
         self.wallet = MiniWallet(self.nodes[0])
         self.wallet.generate(1)
         # Get out of IBD for the minfeefilter and getpeerinfo tests.
-        self.nodes[0].generate(101)
+        self.nodes[0].generate(COINBASE_MATURITY + 1)
 
         # By default, the test framework sets up an addnode connection from
         # node 1 --> node0. By connecting node0 --> node 1, we're left with
diff --git a/test/functional/rpc_rawtransaction.py b/test/functional/rpc_rawtransaction.py
index 86c7b3fbcc..53ddf24e47 100755
--- a/test/functional/rpc_rawtransaction.py
+++ b/test/functional/rpc_rawtransaction.py
@@ -15,6 +15,8 @@ Test the following RPCs:
 from collections import OrderedDict
 from decimal import Decimal
 from io import BytesIO
+
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.messages import CTransaction, ToHex
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
@@ -66,7 +68,7 @@ class RawTransactionsTest(BitcoinTestFramework):
         self.log.info('prepare some coins for multiple *rawtransaction commands')
         self.nodes[2].generate(1)
         self.sync_all()
-        self.nodes[0].generate(101)
+        self.nodes[0].generate(COINBASE_MATURITY + 1)
         self.sync_all()
         self.nodes[0].sendtoaddress(self.nodes[2].getnewaddress(),1.5)
         self.nodes[0].sendtoaddress(self.nodes[2].getnewaddress(),1.0)
diff --git a/test/functional/rpc_signrawtransaction.py b/test/functional/rpc_signrawtransaction.py
index 60b4d1c744..16b0019866 100755
--- a/test/functional/rpc_signrawtransaction.py
+++ b/test/functional/rpc_signrawtransaction.py
@@ -4,6 +4,7 @@
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test transaction signing using the signrawtransaction* RPCs."""
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.address import check_script, script_to_p2sh, script_to_p2wsh
 from test_framework.key import ECKey
 from test_framework.test_framework import BitcoinTestFramework
@@ -155,7 +156,7 @@ class SignRawTransactionsTest(BitcoinTestFramework):
     def test_fully_signed_tx(self):
         self.log.info("Test signing a fully signed transaction does nothing")
         self.nodes[0].walletpassphrase("password", 9999)
-        self.nodes[0].generate(101)
+        self.nodes[0].generate(COINBASE_MATURITY + 1)
         rawtx = self.nodes[0].createrawtransaction([], [{self.nodes[0].getnewaddress(): 10}])
         fundedtx = self.nodes[0].fundrawtransaction(rawtx)
         signedtx = self.nodes[0].signrawtransactionwithwallet(fundedtx["hex"])
@@ -174,7 +175,7 @@ class SignRawTransactionsTest(BitcoinTestFramework):
         embedded_pubkey = eckey.get_pubkey().get_bytes().hex()
         p2sh_p2wsh_address = self.nodes[1].createmultisig(1, [embedded_pubkey], "p2sh-segwit")
         # send transaction to P2SH-P2WSH 1-of-1 multisig address
-        self.nodes[0].generate(101)
+        self.nodes[0].generate(COINBASE_MATURITY + 1)
         self.nodes[0].sendtoaddress(p2sh_p2wsh_address["address"], 49.999)
         self.nodes[0].generate(1)
         self.sync_all()
diff --git a/test/functional/rpc_txoutproof.py b/test/functional/rpc_txoutproof.py
index 528da0cbfc..bf96b6353c 100755
--- a/test/functional/rpc_txoutproof.py
+++ b/test/functional/rpc_txoutproof.py
@@ -4,6 +4,7 @@
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test gettxoutproof and verifytxoutproof RPCs."""
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.messages import CMerkleBlock, FromHex, ToHex
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import assert_equal, assert_raises_rpc_error
@@ -23,7 +24,7 @@ class MerkleBlockTest(BitcoinTestFramework):
         miniwallet = MiniWallet(self.nodes[0])
         # Add enough mature utxos to the wallet, so that all txs spend confirmed coins
         miniwallet.generate(5)
-        self.nodes[0].generate(100)
+        self.nodes[0].generate(COINBASE_MATURITY)
         self.sync_all()
 
         chain_height = self.nodes[1].getblockcount()
diff --git a/test/functional/test_framework/blocktools.py b/test/functional/test_framework/blocktools.py
index d08e025178..e91b44e776 100644
--- a/test/functional/test_framework/blocktools.py
+++ b/test/functional/test_framework/blocktools.py
@@ -52,6 +52,9 @@ MAX_BLOCK_SIGOPS_WEIGHT = MAX_BLOCK_SIGOPS * WITNESS_SCALE_FACTOR
 # Genesis block time (regtest)
 TIME_GENESIS_BLOCK = 1296688602
 
+# Coinbase transaction outputs can only be spent after this number of new blocks (network rule)
+COINBASE_MATURITY = 100
+
 # From BIP141
 WITNESS_COMMITMENT_HEADER = b"\xaa\x21\xa9\xed"
 
diff --git a/test/functional/wallet_abandonconflict.py b/test/functional/wallet_abandonconflict.py
index 2e0edcfa38..d24cc802a4 100755
--- a/test/functional/wallet_abandonconflict.py
+++ b/test/functional/wallet_abandonconflict.py
@@ -12,6 +12,7 @@
 """
 from decimal import Decimal
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_equal,
@@ -28,7 +29,7 @@ class AbandonConflictTest(BitcoinTestFramework):
         self.skip_if_no_wallet()
 
     def run_test(self):
-        self.nodes[1].generate(100)
+        self.nodes[1].generate(COINBASE_MATURITY)
         self.sync_blocks()
         balance = self.nodes[0].getbalance()
         txA = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), Decimal("10"))
diff --git a/test/functional/wallet_address_types.py b/test/functional/wallet_address_types.py
index b3bee1876d..6d93cf412f 100755
--- a/test/functional/wallet_address_types.py
+++ b/test/functional/wallet_address_types.py
@@ -53,6 +53,7 @@ Test that the nodes generate the correct change address type:
 from decimal import Decimal
 import itertools
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.descriptors import (
     descsum_create,
@@ -220,7 +221,7 @@ class AddressTypeTest(BitcoinTestFramework):
     def run_test(self):
         # Mine 101 blocks on node5 to bring nodes out of IBD and make sure that
         # no coinbases are maturing for the nodes-under-test during the test
-        self.nodes[5].generate(101)
+        self.nodes[5].generate(COINBASE_MATURITY + 1)
         self.sync_blocks()
 
         uncompressed_1 = "0496b538e853519c726a2c91e61ec11600ae1390813a627c66fb8be7947be63c52da7589379515d4e0a604f8141781e62294721166bf621e73a82cbf2342c858ee"
@@ -258,7 +259,7 @@ class AddressTypeTest(BitcoinTestFramework):
             self.log.info("Sending from node {} ({}) with{} multisig using {}".format(from_node, self.extra_args[from_node], "" if multisig else "out", "default" if address_type is None else address_type))
             old_balances = self.get_balances()
             self.log.debug("Old balances are {}".format(old_balances))
-            to_send = (old_balances[from_node] / 101).quantize(Decimal("0.00000001"))
+            to_send = (old_balances[from_node] / (COINBASE_MATURITY + 1)).quantize(Decimal("0.00000001"))
             sends = {}
             addresses = {}
 
diff --git a/test/functional/wallet_backup.py b/test/functional/wallet_backup.py
index f34c1345e0..05a0ef0ea1 100755
--- a/test/functional/wallet_backup.py
+++ b/test/functional/wallet_backup.py
@@ -35,6 +35,7 @@ import os
 from random import randint
 import shutil
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_equal,
@@ -123,7 +124,7 @@ class WalletBackupTest(BitcoinTestFramework):
         self.sync_blocks()
         self.nodes[2].generate(1)
         self.sync_blocks()
-        self.nodes[3].generate(100)
+        self.nodes[3].generate(COINBASE_MATURITY)
         self.sync_blocks()
 
         assert_equal(self.nodes[0].getbalance(), 50)
@@ -152,7 +153,7 @@ class WalletBackupTest(BitcoinTestFramework):
             self.do_one_round()
 
         # Generate 101 more blocks, so any fees paid mature
-        self.nodes[3].generate(101)
+        self.nodes[3].generate(COINBASE_MATURITY + 1)
         self.sync_all()
 
         balance0 = self.nodes[0].getbalance()
diff --git a/test/functional/wallet_balance.py b/test/functional/wallet_balance.py
index 433b40faee..204a866c55 100755
--- a/test/functional/wallet_balance.py
+++ b/test/functional/wallet_balance.py
@@ -7,6 +7,7 @@ from decimal import Decimal
 import struct
 
 from test_framework.address import ADDRESS_BCRT1_UNSPENDABLE as ADDRESS_WATCHONLY
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_equal,
@@ -72,7 +73,7 @@ class WalletTest(BitcoinTestFramework):
         self.nodes[0].generate(1)
         self.sync_all()
         self.nodes[1].generate(1)
-        self.nodes[1].generatetoaddress(101, ADDRESS_WATCHONLY)
+        self.nodes[1].generatetoaddress(COINBASE_MATURITY + 1, ADDRESS_WATCHONLY)
         self.sync_all()
 
         if not self.options.descriptors:
diff --git a/test/functional/wallet_basic.py b/test/functional/wallet_basic.py
index 4a1d25bbc5..a052ec7477 100755
--- a/test/functional/wallet_basic.py
+++ b/test/functional/wallet_basic.py
@@ -6,6 +6,7 @@
 from decimal import Decimal
 from itertools import product
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_array_result,
@@ -65,7 +66,7 @@ class WalletTest(BitcoinTestFramework):
         assert_equal(walletinfo['balance'], 0)
 
         self.sync_all(self.nodes[0:3])
-        self.nodes[1].generate(101)
+        self.nodes[1].generate(COINBASE_MATURITY + 1)
         self.sync_all(self.nodes[0:3])
 
         assert_equal(self.nodes[0].getbalance(), 50)
@@ -158,7 +159,7 @@ class WalletTest(BitcoinTestFramework):
         assert_equal(len(self.nodes[1].listlockunspent()), 0)
 
         # Have node1 generate 100 blocks (so node0 can recover the fee)
-        self.nodes[1].generate(100)
+        self.nodes[1].generate(COINBASE_MATURITY)
         self.sync_all(self.nodes[0:3])
 
         # node0 should end up with 100 btc in block rewards plus fees, but
diff --git a/test/functional/wallet_bumpfee.py b/test/functional/wallet_bumpfee.py
index ff5070c1fa..b21461ee7b 100755
--- a/test/functional/wallet_bumpfee.py
+++ b/test/functional/wallet_bumpfee.py
@@ -16,6 +16,7 @@ make assumptions about execution order.
 from decimal import Decimal
 import io
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.blocktools import add_witness_commitment, create_block, create_coinbase, send_to_witness
 from test_framework.messages import BIP125_SEQUENCE_NUMBER, CTransaction
 from test_framework.test_framework import BitcoinTestFramework
@@ -265,7 +266,7 @@ def test_small_output_with_feerate_succeeds(self, rbf_node, dest_address):
     self.log.info('Testing small output with feerate bump succeeds')
 
     # Make sure additional inputs exist
-    rbf_node.generatetoaddress(101, rbf_node.getnewaddress())
+    rbf_node.generatetoaddress(COINBASE_MATURITY + 1, rbf_node.getnewaddress())
     rbfid = spend_one_input(rbf_node, dest_address)
     input_list = rbf_node.getrawtransaction(rbfid, 1)["vin"]
     assert_equal(len(input_list), 1)
diff --git a/test/functional/wallet_descriptor.py b/test/functional/wallet_descriptor.py
index 1e032bdd6c..c6f5d334f8 100755
--- a/test/functional/wallet_descriptor.py
+++ b/test/functional/wallet_descriptor.py
@@ -4,6 +4,7 @@
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test descriptor wallet function."""
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_equal,
@@ -83,7 +84,7 @@ class WalletDescriptorTest(BitcoinTestFramework):
         send_wrpc = self.nodes[0].get_wallet_rpc("desc1")
 
         # Generate some coins
-        send_wrpc.generatetoaddress(101, send_wrpc.getnewaddress())
+        send_wrpc.generatetoaddress(COINBASE_MATURITY + 1, send_wrpc.getnewaddress())
 
         # Make transactions
         self.log.info("Test sending and receiving")
diff --git a/test/functional/wallet_fallbackfee.py b/test/functional/wallet_fallbackfee.py
index 78eef4b790..b28f3ecebc 100755
--- a/test/functional/wallet_fallbackfee.py
+++ b/test/functional/wallet_fallbackfee.py
@@ -3,6 +3,8 @@
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test wallet replace-by-fee capabilities in conjunction with the fallbackfee."""
+
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import assert_raises_rpc_error
 
@@ -15,7 +17,7 @@ class WalletRBFTest(BitcoinTestFramework):
         self.skip_if_no_wallet()
 
     def run_test(self):
-        self.nodes[0].generate(101)
+        self.nodes[0].generate(COINBASE_MATURITY + 1)
 
         # sending a transaction without fee estimations must be possible by default on regtest
         self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), 1)
diff --git a/test/functional/wallet_groups.py b/test/functional/wallet_groups.py
index c0b76d960f..f32acb8e15 100755
--- a/test/functional/wallet_groups.py
+++ b/test/functional/wallet_groups.py
@@ -4,6 +4,7 @@
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test wallet group functionality."""
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.messages import CTransaction, FromHex, ToHex
 from test_framework.util import (
@@ -31,7 +32,7 @@ class WalletGroupTest(BitcoinTestFramework):
     def run_test(self):
         self.log.info("Setting up")
         # Mine some coins
-        self.nodes[0].generate(101)
+        self.nodes[0].generate(COINBASE_MATURITY + 1)
 
         # Get some addresses from the two nodes
         addr1 = [self.nodes[1].getnewaddress() for _ in range(3)]
diff --git a/test/functional/wallet_hd.py b/test/functional/wallet_hd.py
index 23d132df41..d41a389197 100755
--- a/test/functional/wallet_hd.py
+++ b/test/functional/wallet_hd.py
@@ -7,6 +7,7 @@
 import os
 import shutil
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_equal,
@@ -48,7 +49,7 @@ class WalletHDTest(BitcoinTestFramework):
 
         # Derive some HD addresses and remember the last
         # Also send funds to each add
-        self.nodes[0].generate(101)
+        self.nodes[0].generate(COINBASE_MATURITY + 1)
         hd_add = None
         NUM_HD_ADDS = 10
         for i in range(1, NUM_HD_ADDS + 1):
diff --git a/test/functional/wallet_importdescriptors.py b/test/functional/wallet_importdescriptors.py
index 0a3dd56620..a2da16e5a3 100755
--- a/test/functional/wallet_importdescriptors.py
+++ b/test/functional/wallet_importdescriptors.py
@@ -16,6 +16,7 @@ variants.
   and test the values returned."""
 
 from test_framework.address import key_to_p2pkh
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.descriptors import descsum_create
 from test_framework.util import (
@@ -73,7 +74,7 @@ class ImportDescriptorsTest(BitcoinTestFramework):
         assert_equal(wpriv.getwalletinfo()['keypoolsize'], 0)
 
         self.log.info('Mining coins')
-        w0.generatetoaddress(101, w0.getnewaddress())
+        w0.generatetoaddress(COINBASE_MATURITY + 1, w0.getnewaddress())
 
         # RPC importdescriptors -----------------------------------------------
 
diff --git a/test/functional/wallet_importmulti.py b/test/functional/wallet_importmulti.py
index 13186b9e1d..0a00c5eed9 100755
--- a/test/functional/wallet_importmulti.py
+++ b/test/functional/wallet_importmulti.py
@@ -15,6 +15,7 @@ variants.
 - `test_address()` is called to call getaddressinfo for an address on node1
   and test the values returned."""
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.script import (
     CScript,
     OP_NOP,
@@ -255,7 +256,7 @@ class ImportMultiTest(BitcoinTestFramework):
 
         # P2SH address
         multisig = get_multisig(self.nodes[0])
-        self.nodes[1].generate(100)
+        self.nodes[1].generate(COINBASE_MATURITY)
         self.nodes[1].sendtoaddress(multisig.p2sh_addr, 10.00)
         self.nodes[1].generate(1)
         timestamp = self.nodes[1].getblock(self.nodes[1].getbestblockhash())['mediantime']
@@ -276,7 +277,7 @@ class ImportMultiTest(BitcoinTestFramework):
 
         # P2SH + Redeem script
         multisig = get_multisig(self.nodes[0])
-        self.nodes[1].generate(100)
+        self.nodes[1].generate(COINBASE_MATURITY)
         self.nodes[1].sendtoaddress(multisig.p2sh_addr, 10.00)
         self.nodes[1].generate(1)
         timestamp = self.nodes[1].getblock(self.nodes[1].getbestblockhash())['mediantime']
@@ -297,7 +298,7 @@ class ImportMultiTest(BitcoinTestFramework):
 
         # P2SH + Redeem script + Private Keys + !Watchonly
         multisig = get_multisig(self.nodes[0])
-        self.nodes[1].generate(100)
+        self.nodes[1].generate(COINBASE_MATURITY)
         self.nodes[1].sendtoaddress(multisig.p2sh_addr, 10.00)
         self.nodes[1].generate(1)
         timestamp = self.nodes[1].getblock(self.nodes[1].getbestblockhash())['mediantime']
@@ -323,7 +324,7 @@ class ImportMultiTest(BitcoinTestFramework):
 
         # P2SH + Redeem script + Private Keys + Watchonly
         multisig = get_multisig(self.nodes[0])
-        self.nodes[1].generate(100)
+        self.nodes[1].generate(COINBASE_MATURITY)
         self.nodes[1].sendtoaddress(multisig.p2sh_addr, 10.00)
         self.nodes[1].generate(1)
         timestamp = self.nodes[1].getblock(self.nodes[1].getbestblockhash())['mediantime']
diff --git a/test/functional/wallet_importprunedfunds.py b/test/functional/wallet_importprunedfunds.py
index 7635ce2139..ded0e64b1d 100755
--- a/test/functional/wallet_importprunedfunds.py
+++ b/test/functional/wallet_importprunedfunds.py
@@ -5,6 +5,7 @@
 """Test the importprunedfunds and removeprunedfunds RPCs."""
 from decimal import Decimal
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.address import key_to_p2wpkh
 from test_framework.key import ECKey
 from test_framework.test_framework import BitcoinTestFramework
@@ -24,7 +25,7 @@ class ImportPrunedFundsTest(BitcoinTestFramework):
 
     def run_test(self):
         self.log.info("Mining blocks...")
-        self.nodes[0].generate(101)
+        self.nodes[0].generate(COINBASE_MATURITY + 1)
 
         self.sync_all()
 
@@ -46,7 +47,7 @@ class ImportPrunedFundsTest(BitcoinTestFramework):
         self.sync_all()
 
         # Node 1 sync test
-        assert_equal(self.nodes[1].getblockcount(), 101)
+        assert_equal(self.nodes[1].getblockcount(), COINBASE_MATURITY + 1)
 
         # Address Test - before import
         address_info = self.nodes[1].getaddressinfo(address1)
diff --git a/test/functional/wallet_keypool_topup.py b/test/functional/wallet_keypool_topup.py
index 5619d57947..1ecf08b9ac 100755
--- a/test/functional/wallet_keypool_topup.py
+++ b/test/functional/wallet_keypool_topup.py
@@ -13,6 +13,7 @@ Two nodes. Node1 is under test. Node0 is providing transactions and generating b
 import os
 import shutil
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_equal,
@@ -31,7 +32,7 @@ class KeypoolRestoreTest(BitcoinTestFramework):
     def run_test(self):
         wallet_path = os.path.join(self.nodes[1].datadir, self.chain, "wallets", self.default_wallet_name, self.wallet_data_filename)
         wallet_backup_path = os.path.join(self.nodes[1].datadir, "wallet.bak")
-        self.nodes[0].generate(101)
+        self.nodes[0].generate(COINBASE_MATURITY + 1)
 
         self.log.info("Make backup of wallet")
         self.stop_node(1)
diff --git a/test/functional/wallet_labels.py b/test/functional/wallet_labels.py
index 551eb72720..2d792bac52 100755
--- a/test/functional/wallet_labels.py
+++ b/test/functional/wallet_labels.py
@@ -11,6 +11,7 @@ RPCs tested are:
 """
 from collections import defaultdict
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import assert_equal, assert_raises_rpc_error
 from test_framework.wallet_util import test_address
@@ -32,7 +33,7 @@ class WalletLabelsTest(BitcoinTestFramework):
         # Note each time we call generate, all generated coins go into
         # the same address, so we call twice to get two addresses w/50 each
         node.generatetoaddress(nblocks=1, address=node.getnewaddress(label='coinbase'))
-        node.generatetoaddress(nblocks=101, address=node.getnewaddress(label='coinbase'))
+        node.generatetoaddress(nblocks=COINBASE_MATURITY + 1, address=node.getnewaddress(label='coinbase'))
         assert_equal(node.getbalance(), 100)
 
         # there should be 2 address groups
@@ -104,7 +105,7 @@ class WalletLabelsTest(BitcoinTestFramework):
             label.verify(node)
             assert_equal(node.getreceivedbylabel(label.name), 2)
             label.verify(node)
-        node.generate(101)
+        node.generate(COINBASE_MATURITY + 1)
 
         # Check that setlabel can assign a label to a new unused address.
         for label in labels:
@@ -124,7 +125,7 @@ class WalletLabelsTest(BitcoinTestFramework):
                 label.add_address(multisig_address)
                 label.purpose[multisig_address] = "send"
                 label.verify(node)
-            node.generate(101)
+            node.generate(COINBASE_MATURITY + 1)
 
         # Check that setlabel can change the label of an address from a
         # different label.
diff --git a/test/functional/wallet_listsinceblock.py b/test/functional/wallet_listsinceblock.py
index 448720530c..3899971bd7 100755
--- a/test/functional/wallet_listsinceblock.py
+++ b/test/functional/wallet_listsinceblock.py
@@ -5,6 +5,7 @@
 """Test the listsinceblock RPC."""
 
 from test_framework.address import key_to_p2wpkh
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.key import ECKey
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.messages import BIP125_SEQUENCE_NUMBER
@@ -29,7 +30,7 @@ class ListSinceBlockTest(BitcoinTestFramework):
         # All nodes are in IBD from genesis, so they'll need the miner (node2) to be an outbound connection, or have
         # only one connection. (See fPreferredDownload in net_processing)
         self.connect_nodes(1, 2)
-        self.nodes[2].generate(101)
+        self.nodes[2].generate(COINBASE_MATURITY + 1)
         self.sync_all()
 
         self.test_no_blockhash()
diff --git a/test/functional/wallet_multiwallet.py b/test/functional/wallet_multiwallet.py
index 71d1b96a95..00d2c9ffe4 100755
--- a/test/functional/wallet_multiwallet.py
+++ b/test/functional/wallet_multiwallet.py
@@ -14,6 +14,7 @@ import stat
 import time
 
 from test_framework.authproxy import JSONRPCException
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.test_node import ErrorMatch
 from test_framework.util import (
@@ -229,7 +230,7 @@ class MultiWalletTest(BitcoinTestFramework):
         assert_raises_rpc_error(-19, "Wallet file not specified", node.getwalletinfo)
 
         w1, w2, w3, w4, *_ = wallets
-        node.generatetoaddress(nblocks=101, address=w1.getnewaddress())
+        node.generatetoaddress(nblocks=COINBASE_MATURITY + 1, address=w1.getnewaddress())
         assert_equal(w1.getbalance(), 100)
         assert_equal(w2.getbalance(), 0)
         assert_equal(w3.getbalance(), 0)
diff --git a/test/functional/wallet_upgradewallet.py b/test/functional/wallet_upgradewallet.py
index fbc0f995d2..e7dd7592b6 100755
--- a/test/functional/wallet_upgradewallet.py
+++ b/test/functional/wallet_upgradewallet.py
@@ -17,6 +17,7 @@ import struct
 
 from io import BytesIO
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.bdb import dump_bdb_kv
 from test_framework.messages import deser_compact_size, deser_string
 from test_framework.test_framework import BitcoinTestFramework
@@ -118,11 +119,11 @@ class UpgradeWalletTest(BitcoinTestFramework):
         assert_equal(wallet.getwalletinfo()["walletversion"], previous_version)
 
     def run_test(self):
-        self.nodes[0].generatetoaddress(101, self.nodes[0].getnewaddress())
+        self.nodes[0].generatetoaddress(COINBASE_MATURITY + 1, self.nodes[0].getnewaddress())
         self.dumb_sync_blocks()
         # # Sanity check the test framework:
         res = self.nodes[0].getblockchaininfo()
-        assert_equal(res['blocks'], 101)
+        assert_equal(res['blocks'], COINBASE_MATURITY + 1)
         node_master = self.nodes[0]
         v16_3_node  = self.nodes[1]
         v15_2_node  = self.nodes[2]
@@ -130,7 +131,7 @@ class UpgradeWalletTest(BitcoinTestFramework):
         # Send coins to old wallets for later conversion checks.
         v16_3_wallet  = v16_3_node.get_wallet_rpc('wallet.dat')
         v16_3_address = v16_3_wallet.getnewaddress()
-        node_master.generatetoaddress(101, v16_3_address)
+        node_master.generatetoaddress(COINBASE_MATURITY + 1, v16_3_address)
         self.dumb_sync_blocks()
         v16_3_balance = v16_3_wallet.getbalance()
 
diff --git a/test/functional/wallet_watchonly.py b/test/functional/wallet_watchonly.py
index c345c382d0..6743c4a49b 100755
--- a/test/functional/wallet_watchonly.py
+++ b/test/functional/wallet_watchonly.py
@@ -5,6 +5,7 @@
 """Test createwallet watchonly arguments.
 """
 
+from test_framework.blocktools import COINBASE_MATURITY
 from test_framework.test_framework import BitcoinTestFramework
 from test_framework.util import (
     assert_equal,
@@ -36,7 +37,7 @@ class CreateWalletWatchonlyTest(BitcoinTestFramework):
         wo_wallet.importpubkey(pubkey=def_wallet.getaddressinfo(wo_change)['pubkey'])
 
         # generate some btc for testing
-        node.generatetoaddress(101, a1)
+        node.generatetoaddress(COINBASE_MATURITY + 1, a1)
 
         # send 1 btc to our watch-only address
         txid = def_wallet.sendtoaddress(wo_addr, 1)