simulator nLockTime

shared/ccc.py

@@ -2,7 +2,7 @@
 #
 # ccc.py - ColdCard Cosign feature. Be a leg in a 2-of-3 that signed based on policy.
 #
-import gc, chains, version, ngu, web2fa, bip39, re
+import gc, chains, version, ngu, web2fa, bip39, re, ckcc
 from utils import swab32, a2b_hex, b2a_hex, xfp2str, truncate_address, pad_raw_secret
 from glob import settings
 from ux import ux_confirm, ux_show_story, the_ux, OK, ux_dramatic_pause, ux_enter_number
@@ -77,7 +77,9 @@ class CCCFeature:
     def default_policy(cls):
         # a very basic an permissive policy, but non-zero too.
         # - 1BTC per day
-        return dict(mag=1, vel=144, block_h=0, web2fa='', addrs=[])
+        chain = chains.current_chain()
+        return dict(mag=1, vel=144, block_h=chain.CCC_MIN_BLOCK,
+                    web2fa='', addrs=[])
 
     @classmethod
     def get_policy(cls):
@@ -139,7 +141,7 @@ class CCCFeature:
                 # this is unix timestamp - not allowed - fail
                 raise CCCPolicyViolationError("nLockTime not block height")
 
-            block_h = pol.get("block_h", 0) or 865321
+            block_h = pol.get("block_h", chains.current_chain().CCC_MIN_BLOCK)
             if psbt.lock_time <= block_h:
                 raise CCCPolicyViolationError("rewound")
 

shared/chains.py

@@ -32,6 +32,9 @@ Slip132Version = namedtuple('Slip132Version', ('pub', 'priv', 'hint'))
 class ChainsBase:
 
     curve = 'secp256k1'
+    menu_name = None        # use 'name' if this isn't defined
+    core_name = None        # name of chain's "core" p2p software
+    CCC_MIN_BLOCK = 0
 
     # b44_cointype comes from
     #    <https://github.com/satoshilabs/slips/blob/master/slip-0044.md>
@@ -292,6 +295,7 @@ class BitcoinMain(ChainsBase):
     # see <https://github.com/bitcoin/bitcoin/blob/master/src/chainparams.cpp#L140>
     ctype = 'BTC'
     name = 'Bitcoin Mainnet'
+    CCC_MIN_BLOCK = 865572
 
     slip132 = {
         AF_CLASSIC:     Slip132Version(0x0488B21E, 0x0488ADE4, 'x'),
@@ -309,7 +313,7 @@ class BitcoinMain(ChainsBase):
 
     b44_cointype = 0
 
-class BitcoinTestnet(BitcoinMain):
+class BitcoinTestnet(ChainsBase):
     # testnet4 (was testnet3 up until 2025 but all parameters are the same)
     ctype = 'XTN'
     name = 'Bitcoin Testnet 4'
@@ -331,7 +335,7 @@ class BitcoinTestnet(BitcoinMain):
     b44_cointype = 1
 
 
-class BitcoinRegtest(BitcoinMain):
+class BitcoinRegtest(ChainsBase):
     ctype = 'XRT'
     name = 'Bitcoin Regtest'