From 6aa6f8a65ae75f85186d96ef06801d124928efd8 Mon Sep 17 00:00:00 2001
From: brqgoo <100725376+brqgoo@users.noreply.github.com>
Date: Sun, 29 Jan 2023 14:43:20 +0300
Subject: [PATCH] Update 02.md
---
02.md | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/02.md b/02.md
index 70c74fc..f86d1f8 100644
--- a/02.md
+++ b/02.md
@@ -30,8 +30,8 @@ Inconvenient for onboarding new users who have no UTXO possession in the beginni
- The nostr parent secret key _nsec_: a 32-byte array.
- The nostr parent public key _npub_: _cbytes(int(nsec)⋅G)_.
- The tweak derivation secret _ds_: a 32-byte array.
+ - The number _u_ of child keys _232_.
- Let _ds_ = _hashBDS-02 dersec(nsec)_.
- - The number _u_ of child keys, _u = 232_.
- For _i = 1 .. u_:
- - The BDS-02 child secret key _ski_.
- - The BDS-02 child public key _pki_.
@@ -39,3 +39,17 @@ Inconvenient for onboarding new users who have no UTXO possession in the beginni
- - Let _ti_ = _hashBDS-02 tweak(ds || bytes(32, i))_.
- - Let _pki_ = _cbytes(npub + int(ti)⋅G)_.
- - Let _ski_ = _bytes(32, (int(nsec) + int(ti )) mod n)_.
+
+- For _i = 1 < u< 232_:
+- - The _to_self_ : 32-byte x-only child public key.
+- - The _ex_ : a 2-byte minimally encoded channel expiry as relative locktime.
+- - The _ts_ : a 39-byte raw tapscript for a non-interactive refund closure.
+- - The _chanpubkey_ : tweaked 2-of-2 common channel output
+- - The _chanaddress_ : expiring channel address
+- - Let _to_self_ = _xbytes(pki)_.
+- - Let _ex_ = _CScriptNum(26280)_.
+- - Let _ts_ = ` OP_CHECKSEQUENCEVERIFY OP_DROP OP_CHECKSIG`.
+- - Let _shash_ = _hashTapLeaf(0xc0 || 0x27 || s)_.
+- - Let _stweak_ = _hashTapTweak(lift_x(pkagg) || shash)_.
+- - Let _chanpubkey_ = _lift_x(pkagg) + int(stweak)⋅G_.
+- - Let _chanaddress_ = _Bech32m(0x51 || 0x20 || x_bytes(cpubkey))_.