docs(changelog): add v1.18.3 entry for NOTICE.md and ERC-20 clarification in README

Added a new entry for version v1.18.3 to document the addition of NOTICE.md, clarifying that ERC‑3643 is based on ERC‑20, not ERC‑1400. Also recorded the update to README.md to reflect the correct token standard foundation.

Author: afrail-inc

CHANGELOG.md

@@ -2,96 +2,77 @@
 
 All notable changes to the AFRX Security Token smart contract repository will be documented in this file.
 
+----------
 
----
+## [v1.18.3] – 2025-07-17
 
-[v1.18.2] – 2025-06-24
+### Added
 
-*Changed*
+-   `NOTICE.md` with technical clarification that ERC‑3643 is built on ERC‑20, not ERC‑1400.
 
-Replaced outdated README.md with updated full version including token design breakdown and corrected anchor links.
+### Updated
 
-Linked the official AFRX token image (branding/afrx-token.jpg) in both image display and internal documentation.
+-   `README.md`: Updated all references from ERC‑1400 to ERC‑20 to reflect accurate token standard architecture.
 
-Verified internal markdown anchors to ensure all Project Links route correctly to their sections.
+----------
 
+## [v1.18.2] – 2025-06-24
 
+### Changed
 
----
+-   Replaced outdated README.md with updated full version including token design breakdown and corrected anchor links.
+-   Linked the official AFRX token image (`branding/afrx-token.jpg`) in both image display and internal documentation.
+-   Verified internal markdown anchors to ensure all Project Links route correctly to their sections.
 
-[v1.18.1] – 2025-06-22
+----------
 
-*Changed*
+## [v1.18.1] – 2025-06-22
 
-Updated token name in AFRXTokenV1_18.sol from "AfrailX Security Token" to "Afrail Security Token" (line 57).
+### Changed
 
-No changes to contract logic or functionality.
+-   Updated token name in `AFRXTokenV1_18.sol` from "AfrailX Security Token" to "Afrail Security Token" (line 57).
+-   No changes to contract logic or functionality.
+-   Aligned token metadata with official issuer name: Afrail Inc.
 
-Aligned token metadata with official issuer name: Afrail Inc.
+----------
 
+## [v1.18] – 2025-06-22
 
+### Added
 
----
+-   Full audit-style revision of smart contract using CertiK-style methodology.
+-   `AFRXTokenV1_18.sol` introduced with final production-grade compliance features.
+-   Improved error handling and input validations across all major functions.
+-   `dividendInfo[roundId].reclaimedAmount` to track unclaimed dividend recoveries.
+-   `snapshotTimestamps` mapping for reclaim timing logic enforcement.
+-   Events for `DividendsReclaimed`, `TestModeToggled`, `Upgraded` added.
+-   Role-guarded upgradeability with UUPS implementation and `UPGRADER_ROLE`.
 
-[v1.18] – 2025-06-22
+### Changed
 
-Added
+-   Migrated prior production contract `AFRXToken.sol` to `contracts-archive` folder.
+-   Updated jurisdiction enforcement to use normalized lowercase hashed keys.
+-   Whitelisting logic now includes on-chain jurisdiction verification.
+-   Token issuance now includes lockup timing enforcement (`LOCKUP_PERIOD`).
+-   Enhanced double-claim protection in `claimDividends()` with snapshot balance validation.
 
-Full audit-style revision of smart contract using CertiK-style methodology.
+### Fixed
 
-AFRXTokenV1_18.sol introduced with final production-grade compliance features.
+-   Redundant logic and poor modularization from previous versions.
+-   Snapshot imbalance issue when treasury or contract address skewed supply.
+-   Compatibility issues with OpenZeppelin `ERC20Capped` and `Snapshot`.
 
-Improved error handling and input validations across all major functions.
+### Deprecated
 
-dividendInfo[roundId].reclaimedAmount to track unclaimed dividend recoveries.
+-   `AFRXToken.sol` (moved to archive)
+-   `AFRXToken_legacy.sol` (retained for historical reference)
 
-snapshotTimestamps mapping for reclaim timing logic enforcement.
+----------
 
-Events for DividendsReclaimed, TestModeToggled, Upgraded added.
-
-Role-guarded upgradeability with UUPS implementation and UPGRADER_ROLE.
-
-
-Changed
-
-Migrated prior production contract AFRXToken.sol to contracts-archive folder.
-
-Updated jurisdiction enforcement to use normalized lowercase hashed keys.
-
-Whitelisting logic now includes on-chain jurisdiction verification.
-
-Token issuance now includes lockup timing enforcement (LOCKUP_PERIOD).
-
-Enhanced double-claim protection in claimDividends() with snapshot balance validation.
-
-
-Fixed
-
-Redundant logic and poor modularization from previous versions.
-
-Snapshot imbalance issue when treasury or contract address skewed supply.
-
-Compatibility issues with OpenZeppelin ERC20Capped and Snapshot.
-
-
-Deprecated
-
-AFRXToken.sol (moved to archive)
-
-AFRXToken_legacy.sol (retained for historical reference)
-
-
-
----
-
-[v1.17] – 2025-06-21
+## [v1.17] – 2025-06-21
 
 Initial final-stage candidate before CertiK audit pass. Introduced:
 
-Structured investor lockup and jurisdiction enforcement.
-
-Basic dividend distribution via snapshots.
-
-Full OpenZeppelin upgradeable framework.
-
-
+-   Structured investor lockup and jurisdiction enforcement.
+-   Basic dividend distribution via snapshots.
+-   Full OpenZeppelin upgradeable framework.