rename bip-frost-signing to bip-0445

Also, add minor fixes in the preamble of the BIP

Author: siv2r

README.mediawiki

@@ -1351,6 +1351,13 @@ Those proposing changes should consider that ultimately consent may rest with th
 | Salvatore Ingala
 | Standard
 | Draft
+|-
+| [[bip-0445.md|445]]
+|
+| FROST Signing Protocol for BIP340 Signatures
+| Sivaram Dhakshinamoorthy
+| Specification
+| Draft
 |}
 
 <!-- IMPORTANT!  See the instructions at the top of this page, do NOT JUST add BIPs here! -->

bip-frost-signing.md bip-0445.mdbip-frost-signing.md renamed to bip-0445.md

@@ -1,14 +1,13 @@
 ```
-BIP: ?
+BIP: 445
 Title: FROST Signing Protocol for BIP340 Signatures
-Author: Sivaram Dhakshinamoorthy <[email protected]>
-Comments-URI:
+Authors: Sivaram Dhakshinamoorthy <[email protected]>
 Status: Draft
-Type: Standards Track
-Assigned: ?
+Type: Specification
+Assigned: 2026-01-30
 License: CC0-1.0
 Discussion: 2024-07-31: https://groups.google.com/g/bitcoindev/c/PeMp2HQl-H4/m/AcJtK0aKAwAJ
-Requires: 32, 340, 341
+Requires: 340
 ```
 
 ## Abstract
@@ -119,7 +118,7 @@ Every signer computes a partial signature by running *Sign* with their long-term
 Then, the signers broadcast their partial signatures to the coordinator, who runs *PartialSigAgg* to produce the final signature.
 If all parties behaved honestly, the result passes [BIP340][bip340] verification.
 
-![Frost signing flow](./bip-frost-signing/docs/frost-signing-flow.png)
+![Frost signing flow](./bip-0445/docs/frost-signing-flow.png)
 
 A malicious coordinator can cause the signing session to fail but cannot compromise the unforgeability of the scheme. Even when colluding with up to *t-1* signers, a malicious coordinator cannot forge a signature.
 
@@ -577,9 +576,9 @@ Algorithm *PartialSigAgg(psig<sub>1..u</sub>, id<sub>1..u</sub>, session_ctx)*:
 
 ### Test Vectors & Reference Code
 
-We provide a naive, highly inefficient, and non-constant time [pure Python 3 reference implementation of the threshold public key tweaking, nonce generation, partial signing, and partial signature verification algorithms](./bip-frost-signing/python/frost_ref/).
+We provide a naive, highly inefficient, and non-constant time [pure Python 3 reference implementation of the threshold public key tweaking, nonce generation, partial signing, and partial signature verification algorithms](./bip-0445/python/frost_ref/).
 
-Standalone JSON test vectors are also available in the [same directory](./bip-frost-signing/python/vectors/), to facilitate porting the test vectors into other implementations.
+Standalone JSON test vectors are also available in the [same directory](./bip-0445/python/vectors/), to facilitate porting the test vectors into other implementations.
 
 > [!CAUTION]
 > The reference implementation is for demonstration purposes only and not to be used in production environments.
@@ -622,7 +621,7 @@ Algorithm *DeterministicSign(secshare, my_id, aggothernonce, signers_ctx, tweak<
   - The list of tweaks *tweak<sub>1..v</sub>*: *v* 32-byte arrays, each a serialized scalar
   - The list of tweak methods *is_xonly_t<sub>1..v</sub>*: *v* booleans
   - The message *m*: a byte array[^max-msg-len]
-  - The auxiliary randomness *rand*: a 32-byte array, serialized scalar (optional argument)
+  - The auxiliary randomness *rand*: a 32-byte array (optional argument)
 - If the optional argument *rand* is present:
   - Let *secshare' = xor_bytes(secshare, hash<sub>FROST/aux</sub>(rand))*
 - Else:
@@ -786,6 +785,7 @@ This document proposes a standard for the FROST threshold signature scheme that
 
 ## Changelog
 
+- *0.4.0* (2026-01-30): Number 445 was assigned to this BIP.
 - *0.3.6* (2026-01-28): Add MIT license file for reference code and other auxiliary files.
 - *0.3.5* (2026-01-25): Update secp256k1lab to latest version, remove stub file, and fix formatting in the BIP text.
 - *0.3.4* (2026-01-01): Add an example file to the reference code.

bip-frost-signing/.markdownlint.json bip-0445/.markdownlint.jsonbip-frost-signing/.markdownlint.json renamed to bip-0445/.markdownlint.json

@@ -12,8 +12,8 @@ check_availability() {
 check_availability markdownlint-cli2
 check_availability typos
 
-markdownlint-cli2 ../bip-frost-signing.md --config ./.markdownlint.json || true
-typos ../bip-frost-signing.md . || true
+markdownlint-cli2 ../bip-0445.md --config ./.markdownlint.json || true
+typos ../bip-0445.md . || true
 
 cd python || exit 1
 ./tests.sh