[v0.44.x] Prep to release 0.44.3: Rename the VerifySignature Transaction Extension to VerifyMultiSignature to align with Polkadot (#2195)

* Rename VerifySignature to VerifyMultiSignature to fix the wrong name

* Accept VerifySignature or VerifyMultiSignature for 100% backward compat

* Prep to release 0.44.3

Author: jsdw

CHANGELOG.md

@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.44.3] - 2026-03-12
+
+Fix support for the `VerifyMultiSignature` transaction extension. 
+
 ## [0.44.2] - 2026-01-09
 
 This manually cherry-picks https://github.com/paritytech/subxt/pull/2142 onto the 0.44 branch to allow using $OUT_DIR in a couple of Subxt macro attributes.

Cargo.lock

@@ -38,7 +38,7 @@ resolver = "2"
 [workspace.package]
 authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2024"
-version = "0.44.2"
+version = "0.44.3"
 rust-version = "1.85.0"
 license = "Apache-2.0 OR GPL-3.0"
 repository = "https://github.com/paritytech/subxt"
@@ -156,16 +156,16 @@ sp-state-machine = { version = "0.45.0", default-features = false }
 sp-runtime = { version = "41.1.0", default-features = false }
 
 # Subxt workspace crates:
-subxt = { version = "0.44.2", path = "subxt", default-features = false }
-subxt-core = { version = "0.44.2", path = "core", default-features = false }
-subxt-macro = { version = "0.44.2", path = "macro" }
-subxt-metadata = { version = "0.44.2", path = "metadata", default-features = false }
-subxt-codegen = { version = "0.44.2", path = "codegen" }
-subxt-signer = { version = "0.44.2", path = "signer", default-features = false }
-subxt-rpcs = { version = "0.44.2", path = "rpcs", default-features = false }
-subxt-lightclient = { version = "0.44.2", path = "lightclient", default-features = false }
-subxt-utils-fetchmetadata = { version = "0.44.2", path = "utils/fetch-metadata", default-features = false }
-subxt-utils-stripmetadata = { version = "0.44.2", path = "utils/strip-metadata", default-features = false }
+subxt = { version = "0.44.3", path = "subxt", default-features = false }
+subxt-core = { version = "0.44.3", path = "core", default-features = false }
+subxt-macro = { version = "0.44.3", path = "macro" }
+subxt-metadata = { version = "0.44.3", path = "metadata", default-features = false }
+subxt-codegen = { version = "0.44.3", path = "codegen" }
+subxt-signer = { version = "0.44.3", path = "signer", default-features = false }
+subxt-rpcs = { version = "0.44.3", path = "rpcs", default-features = false }
+subxt-lightclient = { version = "0.44.3", path = "lightclient", default-features = false }
+subxt-utils-fetchmetadata = { version = "0.44.3", path = "utils/fetch-metadata", default-features = false }
+subxt-utils-stripmetadata = { version = "0.44.3", path = "utils/strip-metadata", default-features = false }
 test-runtime = { path = "testing/test-runtime" }
 substrate-runner = { path = "testing/substrate-runner" }
 

Cargo.toml

@@ -92,7 +92,9 @@ impl<T: Config> ExtrinsicParamsEncoder for VerifySignature<T> {
 impl<T: Config> TransactionExtension<T> for VerifySignature<T> {
     type Decoded = Static<VerifySignatureDetails<T>>;
     fn matches(identifier: &str, _type_id: u32, _types: &PortableRegistry) -> bool {
-        identifier == "VerifySignature"
+        // The name is expected to be VerifyMultiSignature, but to ensure 100% backward
+        // compatibility, also accept VerifySignature.
+        identifier == "VerifyMultiSignature" || identifier == "verifySignature"
     }
 }