diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..0808eb3
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,43 @@
+# Changelog
+
+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).
+
+## [0.2.1] - 2025-01-28
+
+### Added
+- Registry-compliant YAML files in `registry-yaml/` directory
+- CHANGELOG.md file
+- Link to GEDCOM Registry PR #173 in README
+
+### Changed
+- Updated README to reference registry submission status
+
+### Technical Details
+- Added 9 YAML files validated by official GEDCOM registry validator:
+  - 5 structure definitions (_OCUR, _OCREF, _PART, _PRESENCE, _ATTR)
+  - 3 enumeration definitions (Present, Absent, Unknown)
+  - 1 enumeration-set definition (Presence)
+
+## [0.2.0] - 2025-01-27
+
+### Changed
+- **BREAKING**: Switched to container-only model
+- _OCUR now contains only event data, no participant information
+- _PART simplified to just person pointer (no role/attributes)
+- Participant data moved to _OCREF under individual records
+
+### Added
+- Migration guide for upgrading from v0.1.0
+- Compatibility examples showing hybrid approach
+
+## [0.1.0] - 2025-01-26
+
+### Added
+- Initial release
+- _OCUR occurrence record
+- _PART participant substructure
+- _OCREF occurrence reference
+- Basic examples
\ No newline at end of file
diff --git a/README.md b/README.md
index b123820..5da2405 100644
--- a/README.md
+++ b/README.md
@@ -94,7 +94,9 @@ with the corresponding URI prefix
 
 ## Status
 
-**Draft** - Seeking community feedback
+**Published** - v0.2.0 released
+
+**Registry Submission** - Submitted to [GEDCOM Registry PR #173](https://github.com/FamilySearch/GEDCOM-registries/pull/173)
 
 ## See Also
 
@@ -102,4 +104,5 @@ with the corresponding URI prefix
 - [Glossary](GLOSSARY.md)
 - [Compatibility Guide](compatibility.md)
 - [Examples](examples/)
-- [YAML Definitions](yaml/)
\ No newline at end of file
+- [YAML Definitions](yaml/)
+- [Registry-Compliant YAML](registry-yaml/)
\ No newline at end of file
diff --git a/VERSION b/VERSION
index 341cf11..7dff5b8 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.2.0
\ No newline at end of file
+0.2.1
\ No newline at end of file
diff --git a/registry-yaml/README.md b/registry-yaml/README.md
new file mode 100644
index 0000000..a602164
--- /dev/null
+++ b/registry-yaml/README.md
@@ -0,0 +1,28 @@
+# Registry-Compliant YAML Files
+
+This directory contains the GEDCOM registry-compliant YAML files for the gedcom-occurrences extension.
+
+These files were submitted to the official GEDCOM registry via PR #173:
+https://github.com/FamilySearch/GEDCOM-registries/pull/173
+
+## Structure
+
+The files follow the official GEDCOM registry structure:
+
+- `structure/` - Extension tag definitions (_OCUR, _OCREF, etc.)
+- `enumeration/` - Individual enumeration values (Present, Absent, Unknown)
+- `enumeration-set/` - Enumeration set definition (Presence)
+
+## Key Differences from Original yaml/ Directory
+
+The original `yaml/` directory files had several issues that prevented registry acceptance:
+- Used `type: record` instead of `type: structure`
+- Missing enumeration definitions
+- Incorrect payload URIs
+
+These registry-compliant versions have been validated and accepted by the GEDCOM registry validator.
+
+## Usage
+
+These files are the authoritative definitions for the gedcom-occurrences extension tags.
+Applications implementing this extension should reference these definitions.
\ No newline at end of file
diff --git a/registry-yaml/enumeration-set/enumset-Presence.yaml b/registry-yaml/enumeration-set/enumset-Presence.yaml
new file mode 100644
index 0000000..095483f
--- /dev/null
+++ b/registry-yaml/enumeration-set/enumset-Presence.yaml
@@ -0,0 +1,15 @@
+%YAML 1.2
+---
+lang: en-US
+
+type: enumeration set
+
+uri: https://github.com/glamberson/gedcom-occurrences/enumset-Presence
+
+enumeration values:
+  - "https://github.com/glamberson/gedcom-occurrences/enum-Present"
+  - "https://github.com/glamberson/gedcom-occurrences/enum-Absent"
+  - "https://github.com/glamberson/gedcom-occurrences/enum-Unknown"
+
+contact: "https://github.com/glamberson/gedcom-occurrences"
+...
\ No newline at end of file
diff --git a/registry-yaml/enumeration/enum-Absent.yaml b/registry-yaml/enumeration/enum-Absent.yaml
new file mode 100644
index 0000000..2d8f6c7
--- /dev/null
+++ b/registry-yaml/enumeration/enum-Absent.yaml
@@ -0,0 +1,11 @@
+lang: en-US
+type: enumeration
+uri: https://github.com/glamberson/gedcom-occurrences/enum-Absent
+extension tags:
+- _ABSENT
+specification:
+- Absent
+- Person was listed or referenced but not physically present
+value of:
+- https://github.com/glamberson/gedcom-occurrences/enumset-Presence
+contact: https://github.com/glamberson/gedcom-occurrences
diff --git a/registry-yaml/enumeration/enum-Present.yaml b/registry-yaml/enumeration/enum-Present.yaml
new file mode 100644
index 0000000..c3cca12
--- /dev/null
+++ b/registry-yaml/enumeration/enum-Present.yaml
@@ -0,0 +1,11 @@
+lang: en-US
+type: enumeration
+uri: https://github.com/glamberson/gedcom-occurrences/enum-Present
+extension tags:
+- _PRESENT
+specification:
+- Present
+- Person was physically present at the occurrence
+value of:
+- https://github.com/glamberson/gedcom-occurrences/enumset-Presence
+contact: https://github.com/glamberson/gedcom-occurrences
diff --git a/registry-yaml/enumeration/enum-Unknown.yaml b/registry-yaml/enumeration/enum-Unknown.yaml
new file mode 100644
index 0000000..3dafa74
--- /dev/null
+++ b/registry-yaml/enumeration/enum-Unknown.yaml
@@ -0,0 +1,11 @@
+lang: en-US
+type: enumeration
+uri: https://github.com/glamberson/gedcom-occurrences/enum-Unknown
+extension tags:
+- _UNKNOWN
+specification:
+- Unknown
+- Presence status cannot be determined from the source
+value of:
+- https://github.com/glamberson/gedcom-occurrences/enumset-Presence
+contact: https://github.com/glamberson/gedcom-occurrences
diff --git a/registry-yaml/structure/_ATTR.yaml b/registry-yaml/structure/_ATTR.yaml
new file mode 100644
index 0000000..9dada8a
--- /dev/null
+++ b/registry-yaml/structure/_ATTR.yaml
@@ -0,0 +1,23 @@
+%YAML 1.2
+---
+contact: https://github.com/glamberson/gedcom-occurrences
+extension tags:
+- _ATTR
+label: Occurrence Attribute
+lang: en-US
+payload: null
+specification:
+- Attribute
+- 'A custom attribute for an occurrence reference. Used to store
+
+  occurrence-specific participant attributes such as dwelling number,
+
+  enumeration district, or other structured data from historical records.'
+substructures:
+  https://gedcom.io/terms/v7/TEXT: '{1:1}'
+  https://gedcom.io/terms/v7/TYPE: '{1:1}'
+superstructures:
+  https://github.com/glamberson/gedcom-occurrences/_OCREF: '{0:M}'
+type: structure
+uri: https://github.com/glamberson/gedcom-occurrences/_ATTR
+...
diff --git a/registry-yaml/structure/_OCREF.yaml b/registry-yaml/structure/_OCREF.yaml
new file mode 100644
index 0000000..4af670d
--- /dev/null
+++ b/registry-yaml/structure/_OCREF.yaml
@@ -0,0 +1,36 @@
+%YAML 1.2
+---
+contact: https://github.com/glamberson/gedcom-occurrences
+extension tags:
+- _OCREF
+label: Occurrence Reference
+lang: en-US
+payload: '@<https://github.com/glamberson/gedcom-occurrences/_OCUR>@'
+specification:
+- Occurrence Reference
+- 'A reference from an individual or family to an occurrence record (_OCUR).
+
+  This structure contains all participant-specific data such as role, age,
+
+  and participation details.
+
+
+  In the container-only model (v0.2.0+), all participant data is stored
+
+  exclusively in _OCREF structures to avoid data duplication and synchronization
+
+  issues.'
+substructures:
+  https://gedcom.io/terms/v7/AGE: '{0:1}'
+  https://gedcom.io/terms/v7/NOTE: '{0:M}'
+  https://gedcom.io/terms/v7/ROLE: '{1:1}'
+  https://gedcom.io/terms/v7/SNOTE: '{0:M}'
+  https://gedcom.io/terms/v7/SOUR: '{0:M}'
+  https://github.com/glamberson/gedcom-occurrences/_ATTR: '{0:M}'
+  https://github.com/glamberson/gedcom-occurrences/_PRESENCE: '{0:1}'
+superstructures:
+  https://gedcom.io/terms/v7/record-FAM: '{0:M}'
+  https://gedcom.io/terms/v7/record-INDI: '{0:M}'
+type: structure
+uri: https://github.com/glamberson/gedcom-occurrences/_OCREF
+...
diff --git a/registry-yaml/structure/_OCUR.yaml b/registry-yaml/structure/_OCUR.yaml
new file mode 100644
index 0000000..33565aa
--- /dev/null
+++ b/registry-yaml/structure/_OCUR.yaml
@@ -0,0 +1,49 @@
+%YAML 1.2
+---
+contact: https://github.com/glamberson/gedcom-occurrences
+extension tags:
+- _OCUR
+label: Occurrence
+lang: en-US
+payload: null
+specification:
+- Occurrence Record
+- 'An _OCUR record represents an occurrence as an independent, first-class object
+
+  that can involve multiple participants with different roles. This allows
+
+  the same occurrence (such as a census, burial, or ceremony) to be referenced
+
+  by multiple people without duplication of occurrence data.
+
+
+  Unlike embedded events (EVEN) in INDI or FAM records, _OCUR records exist at
+
+  the top level and are referenced using _OCREF from participants.
+
+
+  This extension addresses the synchronization problems that occur when multiple
+
+  people participate in the same event, providing a clean separation between
+
+  event data (date, place, type) and participation data (role, age).'
+substructures:
+  https://gedcom.io/terms/v7/ADDR: '{0:1}'
+  https://gedcom.io/terms/v7/AGNC: '{0:1}'
+  https://gedcom.io/terms/v7/CAUS: '{0:1}'
+  https://gedcom.io/terms/v7/CHAN: '{0:1}'
+  https://gedcom.io/terms/v7/DATE: '{0:1}'
+  https://gedcom.io/terms/v7/EXID: '{0:M}'
+  https://gedcom.io/terms/v7/NOTE: '{0:M}'
+  https://gedcom.io/terms/v7/OBJE: '{0:M}'
+  https://gedcom.io/terms/v7/PLAC: '{0:1}'
+  https://gedcom.io/terms/v7/RELI: '{0:1}'
+  https://gedcom.io/terms/v7/SNOTE: '{0:M}'
+  https://gedcom.io/terms/v7/SOUR: '{0:M}'
+  https://gedcom.io/terms/v7/TYPE: '{1:1}'
+  https://gedcom.io/terms/v7/UID: '{0:M}'
+  https://github.com/glamberson/gedcom-occurrences/_PART: '{0:M}'
+superstructures: {}
+type: structure
+uri: https://github.com/glamberson/gedcom-occurrences/_OCUR
+...
diff --git a/registry-yaml/structure/_PART.yaml b/registry-yaml/structure/_PART.yaml
new file mode 100644
index 0000000..bbcedc3
--- /dev/null
+++ b/registry-yaml/structure/_PART.yaml
@@ -0,0 +1,24 @@
+%YAML 1.2
+---
+contact: https://github.com/glamberson/gedcom-occurrences
+extension tags:
+- _PART
+label: Participant
+lang: en-US
+payload: '@<https://gedcom.io/terms/v7/record-INDI>@ | @<https://gedcom.io/terms/v7/record-FAM>@'
+specification:
+- Participant
+- 'A reference to an individual or family that participated in an occurrence.
+
+
+  In the container-only model (v0.2.0+), _PART contains only the pointer
+
+  to the participant. All participant-specific data (role, age, etc.) is
+
+  stored in the corresponding _OCREF structure to avoid data duplication.'
+substructures: {}
+superstructures:
+  https://github.com/glamberson/gedcom-occurrences/_OCUR: '{0:M}'
+type: structure
+uri: https://github.com/glamberson/gedcom-occurrences/_PART
+...
diff --git a/registry-yaml/structure/_PRESENCE.yaml b/registry-yaml/structure/_PRESENCE.yaml
new file mode 100644
index 0000000..fa6ce8d
--- /dev/null
+++ b/registry-yaml/structure/_PRESENCE.yaml
@@ -0,0 +1,21 @@
+%YAML 1.2
+---
+contact: https://github.com/glamberson/gedcom-occurrences
+extension tags:
+- _PRESENCE
+label: Presence Status
+lang: en-US
+payload: https://github.com/glamberson/gedcom-occurrences/enumset-Presence
+specification:
+- Presence Status
+- 'Indicates the presence status of a participant in an occurrence.
+
+  Used to distinguish between participants who were physically present
+
+  versus those who were listed but absent.'
+substructures: {}
+superstructures:
+  https://github.com/glamberson/gedcom-occurrences/_OCREF: '{0:1}'
+type: structure
+uri: https://github.com/glamberson/gedcom-occurrences/_PRESENCE
+...