This commit is contained in:
2026-05-05 16:28:32 +02:00
parent 374d1c6b60
commit 3d6982c991
3 changed files with 16 additions and 23 deletions
+1 -2
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@@ -304,8 +304,7 @@ class BitcoinPurple(AbstractNet):
}
XPUB_HEADERS_INV = inv_dict(XPUB_HEADERS)
# Provisional BIP44 coin type (not SLIP-0044 registered; matches BTCP P2P port)
BIP44_COIN_TYPE = 13496
BIP44_COIN_TYPE = 0
LN_REALM_BYTE = 0
LN_DNS_SEEDS = []
+14 -20
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@@ -519,7 +519,7 @@ Modelled after the `AbstractNet` interface (see `pallectrum` for a working examp
| `BOLT11_HRP` | `"btcp"` | `"tbtcp"` | LN invoice prefix |
| `GENESIS` | `000003823f…c015` | `000002fdc3…d998` | full hashes in §2.5 / §3 |
| `DEFAULT_PORTS` | `{'t':'50001','s':'50002'}` | `{'t':'60001','s':'60002'}` | |
| `BIP44_COIN_TYPE` | **TBD / private project constant** | `1` | not registered for BitcoinPurple — see note |
| `BIP44_COIN_TYPE` | `0` (same as Bitcoin) | `1` | no SLIP-0044 entry; matches Bitcoin derivation |
| `LN_REALM_BYTE` | `0` | `1` | LN DNS realm byte; unused while `LN_DNS_SEEDS=[]` |
| `LN_DNS_SEEDS` | `[]` | `[]` | no LN seeds configured |
| `SKIP_POW_DIFFICULTY_VALIDATION` | `False` only after BTCP retarget support | `False` only after BTCP retarget support | see §7.7 |
@@ -527,14 +527,10 @@ Modelled after the `AbstractNet` interface (see `pallectrum` for a working examp
| `COINBASE_MATURITY` | `100` | `100` | blocks before coinbase is spendable |
| `BLOCK_HEIGHT_FIRST_LIGHTNING_CHANNELS` | `0` | `0` | allowed from genesis if LN is enabled |
> **BIP44 coin type:** BitcoinPurple has no SLIP-0044 entry. `BTCP` at index
> `183` is already assigned to Bitcoin Private, so do not reuse it for
> BitcoinPurple. In Electrum constants, store the non-hardened index
> (`0 <= value < 0x80000000`); wallet derivation code adds the hardened bit when
> building paths such as `m/44'/COIN_TYPE'/0'`. Use one project-wide provisional
> integer until an official SLIP-0044 slot is registered. The `13496` value below
> is a project-local placeholder chosen to match the BTCP P2P port, not a
> registered SLIP-0044 value.
> **BIP44 coin type:** BitcoinPurple uses `0` (same as Bitcoin mainnet). BTCP
> has no SLIP-0044 registration and shares the same HD derivation path
> convention as Bitcoin (`m/44'/0'/0'`). The testnet class keeps `1`
> (standard testnet coin type).
### 7.2 `constants.py` Class Definitions
@@ -562,8 +558,7 @@ class BitcoinPurple(AbstractNet):
COINBASE_MATURITY = 100 # consensus/consensus.h:19
POW_TARGET_SPACING = 60 # 60-second blocks
# BIP44 coin type — not registered in SLIP-0044
BIP44_COIN_TYPE = 13496 # provisional private constant; update when registered
BIP44_COIN_TYPE = 0 # same as Bitcoin; no SLIP-0044 entry for BTCP
# Lightning. Height 0 means "allowed from genesis" in Electrum.
BLOCK_HEIGHT_FIRST_LIGHTNING_CHANNELS = 0
@@ -631,15 +626,14 @@ class BitcoinPurpleTestnet(BitcoinPurple):
### 7.3 Derivation Paths (BIP44 / 49 / 84 / 86)
Standard HD paths for each script type. Replace `COIN_TYPE` with the registered
value (TBD — see §7.1 note).
Standard HD paths for each script type. Mainnet uses coin type `0`; testnet uses `1`.
| BIP | Script type | Path template | xpub/xprv prefix |
|-----|-------------|---------------|-----------------|
| BIP44 | P2PKH (legacy) | `m/44'/COIN_TYPE'/0'/0/n` | `xpub` / `xprv` |
| BIP49 | P2WPKH-P2SH (wrapped SegWit) | `m/49'/COIN_TYPE'/0'/0/n` | `ypub` / `yprv` |
| BIP84 | P2WPKH (native SegWit) | `m/84'/COIN_TYPE'/0'/0/n` | `zpub` / `zprv` |
| BIP86 | P2TR (Taproot) | `m/86'/COIN_TYPE'/0'/0/n` | `xpub` / `xprv` or descriptors |
| BIP | Script type | Path template (mainnet) | xpub/xprv prefix |
|-----|-------------|------------------------|-----------------|
| BIP44 | P2PKH (legacy) | `m/44'/0'/0'/0/n` | `xpub` / `xprv` |
| BIP49 | P2WPKH-P2SH (wrapped SegWit) | `m/49'/0'/0'/0/n` | `ypub` / `yprv` |
| BIP84 | P2WPKH (native SegWit) | `m/84'/0'/0'/0/n` | `zpub` / `zprv` |
| BIP86 | P2TR (Taproot) | `m/86'/0'/0'/0/n` | `xpub` / `xprv` or descriptors |
- `ACCOUNT` = `0'` (first account, hardened)
- `CHANGE` = `0` (receive) or `1` (change)
@@ -770,7 +764,7 @@ Files that must be added or changed in an Electrum fork:
| `electrum/chains/bitcoinpurple/checkpoints.json` | Generate from a synced BTCP node |
| header chain verifier | Use 120-block retarget and BTCP `powLimit` |
| address module | Accept Base58 versions 56/55 and Bech32 HRP `btcp` |
| transaction/wallet formats | Use BTCP provisional BIP44 coin type consistently |
| transaction/wallet formats | Use BIP44 coin type `0` (mainnet) / `1` (testnet) |
| Lightning invoice parser | Accept `lnbtcp` / `lntbtcp` BOLT11 prefixes if LN is enabled |
| UI/network selector | Expose BitcoinPurple mainnet/testnet names and datadirs |
+1 -1
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@@ -171,7 +171,7 @@ class TestBitcoinPurpleConstants(ElectrumTestCase):
self.assertEqual([], BitcoinPurpleTestnet.LN_DNS_SEEDS)
def test_bip44_coin_type(self):
self.assertEqual(13496, BitcoinPurple.BIP44_COIN_TYPE)
self.assertEqual(0, BitcoinPurple.BIP44_COIN_TYPE)
self.assertEqual(1, BitcoinPurpleTestnet.BIP44_COIN_TYPE)
# --- NETS_LIST integrity ---