[python] release candidate 0.7.64

Author: RobLe3

CHANGELOG.md

@@ -7,6 +7,15 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 within the scope of the IICP Software axis (see [`VERSIONING.md`](https://github.com/RobLe3/iicp.network/blob/main/project/VERSIONING.md)
 in the main repo).
 
+## [0.7.64] — 2026-06-20
+
+### Changed — provider-side IICP-CX
+- Provider nodes now persist an X25519 CX key locally and advertise the public half as
+  `cx_public_key` during registration.
+- `POST /v1/task` decrypts incoming `iicp_conf` envelopes before invoking the task handler,
+  closing the missing provider-side half of mandatory payload confidentiality.
+- Added regression coverage for CX key advertisement and encrypted task handling.
+
 ## [0.7.63] — 2026-06-20
 
 ### Changed

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "iicp-client"
-version = "0.7.63"
+version = "0.7.64"
 description = "Official Python client SDK for the IICP protocol"
 readme = "README.md"
 license = {text = "Apache-2.0"}

src/iicp_client/__init__.py

@@ -55,7 +55,7 @@
     TaskResponse,
 )
 
-__version__ = "0.7.63"
+__version__ = "0.7.64"
 __all__ = [
     "IicpClient",
     "IicpError",