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Merge pull request #1324 from radiantearth/dev
Release v1.1.0
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‎.gitignore

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# Folder created when CI puhlishes JSON Schemas
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schemas/
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.$STAC-UML.drawio.bkp

‎CHANGELOG.md

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## [Unreleased]
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## [v1.1.0] - 2024-09-10
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### Added
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- Add to best-practices mime types for COPC, Geoparquet, 3dTiles, pmtiles ([#1321](https://github.com/radiantearth/stac-spec/issues/1321))
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### Fixed
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- `item_assets` is not required
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- Better describe the Statistics Object ([#1318](https://github.com/radiantearth/stac-spec/issues/1318))
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- bands as entity in UML model
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- Editorial edits
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## [v1.1.0-beta.1] - 2024-08-08
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### Added
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Thanks @hgs-msmith, @matthewhanson, @hgs-trutherford, @rouault, @joshfix, @alkamin, @hemphillda, @jeffnaus and @fredliporace for contributing to the spec directly, and to [everyone](https://github.com/opengeospatial/wfs3hackathon/blob/master/notes/introductions.md#participants) who participated in the [Ft Collins sprint](https://github.com/radiantearth/community-sprints/tree/master/03072018-ft-collins-co) and brought great ideas.
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[Unreleased]: <https://github.com/radiantearth/stac-spec/compare/master...dev>
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[v1.1.0]: <https://github.com/radiantearth/stac-spec/compare/v1.1.0-beta.1...v1.1.0>
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[v1.1.0-beta.1]: <https://github.com/radiantearth/stac-spec/compare/v1.0.0..v1.1.0-beta.1>
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[v1.0.0]: <https://github.com/radiantearth/stac-spec/compare/v1.0.0-rc.4..v1.0.0>
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[v1.0.0-rc.4]: <https://github.com/radiantearth/stac-spec/compare/v1.0.0-rc.3..v1.0.0-rc.4>

‎CITATION.cff

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type: standard
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title: "SpatioTemporal Asset Catalog (STAC) specification"
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abstract: "Making geospatial assets openly searchable and crawlable."
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version: 1.1.0-beta.1
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version: 1.1.0
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year: 2024
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date-released: 2024-08-08
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date-released: 2024-09-10
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license: Apache-2.0
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url: https://stacspec.org
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repository: https://github.com/radiantearth/stac-spec

‎README.md

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## Current version and branches
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The [master branch](https://github.com/radiantearth/stac-spec/tree/master) is the 'stable'
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version of the spec. It is currently version **1.1.0-beta.1** of the specification. The STAC specification
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version of the spec. It is currently version **1.1.0** of the specification. The STAC specification
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follows [Semantic Versioning](https://semver.org/), so any breaking change will require the spec to
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go to 2.0.0.
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‎STAC-UML.drawio

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‎STAC-UML.pdf

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‎best-practices.md

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| `application/geopackage+sqlite3` | [GeoPackage](https://www.geopackage.org/) |
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| `application/x-hdf5` | Hierarchical Data Format version 5 |
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| `application/x-hdf` | Hierarchical Data Format versions 4 and earlier. |
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| `application/vnd.laszip+copc` | [COPC](https://copc.io/) Cloud optimized PointCloud |
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| `application/vnd.apache.parquet` | Apache [Geoparquet](https://geoparquet.org/) |
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| `application/3dtiles+json` | [OGC 3D Tiles](https://www.ogc.org/standard/3dtiles/) |
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| `application/vnd.pmtiles` | Protomaps [PMTiles](https://github.com/protomaps/PMTiles/blob/main/spec/v3/spec.md) |
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*Deprecation notice: GeoTiff previously used the media type `image/vnd.stac.geotiff` and
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Cloud Optimized GeoTiffs used `image/vnd.stac.geotiff; profile=cloud-optimized`.
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"bands": [
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{
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"name": "r",
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"eo:common_name": "red",
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"eo:common_name": "red"
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},
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{
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"name": "g",

‎catalog-spec/json-schema/catalog.json

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{
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"$schema": "http://json-schema.org/draft-07/schema#",
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"$id": "https://schemas.stacspec.org/v1.1.0-beta.1/catalog-spec/json-schema/catalog.json",
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"$id": "https://schemas.stacspec.org/v1.1.0/catalog-spec/json-schema/catalog.json",
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"title": "STAC Catalog Specification",
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"description": "This object represents Catalogs in a SpatioTemporal Asset Catalog.",
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"allOf": [
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"stac_version": {
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"title": "STAC version",
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"type": "string",
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"const": "1.1.0-beta.1"
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"const": "1.1.0"
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},
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"stac_extensions": {
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"title": "STAC extensions",

‎collection-spec/collection-spec.md

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| summaries | Map<string, \[\*]\|[Range Object](#range-object)\|[JSON Schema Object](#json-schema-object)> | STRONGLY RECOMMENDED. A map of property summaries, either a set of values, a range of values or a [JSON Schema](https://json-schema.org). |
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| links | \[[Link Object](#links)] | **REQUIRED.** A list of references to other documents. |
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| assets | Map<string, [Asset Object](#assets)> | Dictionary of asset objects that can be downloaded, each with a unique key. |
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| item_assets | Map<string, [Item Asset Definition Object](#item-asset-definition-object)> | **REQUIRED.** A dictionary of assets that can be found in member Items. |
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| item_assets | Map<string, [Item Asset Definition Object](#item-asset-definition-object)> | A dictionary of assets that can be found in member Items. |
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### stac_version
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‎collection-spec/json-schema/collection.json

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{
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"$schema": "http://json-schema.org/draft-07/schema#",
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"$id": "https://schemas.stacspec.org/v1.1.0-beta.1/collection-spec/json-schema/collection.json",
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"$id": "https://schemas.stacspec.org/v1.1.0/collection-spec/json-schema/collection.json",
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"title": "STAC Collection Specification",
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"description": "This object represents Collections in a SpatioTemporal Asset Catalog.",
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"allOf": [
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"type": "string",
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"const": "1.1.0-beta.1"
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"const": "1.1.0"
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"title": "STAC extensions",

‎commons/common-metadata.md

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| bands | \[[Band Object](#band-object)] | An array of available bands where each object is a [Band Object](#band-object). |
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The `bands` array is used to describe the available bands in a STAC entity or Asset.
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This fields describes the general construct of a band or layer, which doesn't necessarily need to be a spectral band.
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This field describes the general construct of a band or layer, which doesn't necessarily need to be a spectral band.
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By adding fields from extensions you can indicate that a band, for example, is
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- a spectral band ([EO extension](https://github.com/stac-extensions/eo)),
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### Statistics Object
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Statistics usually specify the range of values by providing the `minimum` and `maximum` values,
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but can optionally be accompanied by additional statistical values.
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Some additional statistical sizes are listed below,
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but the object can also be extended with other statistical sizes that are not listed below.
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For example, it could list additional coverages such as vegetation cover, land cover, etc.
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If statistics are provided in the Item Properties ([example](../examples/extended-item.json)),
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it is recommended to list the statistical sizes with a JSON Schema in the Collection Summaries
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to better describe the sizes ([example](../examples/collection.json)).
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Please note that some statistical sizes such as cloud cover have explicit fields in other extensions such as the EO extension.
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It is recommended to use the fields standardized in extensions in favor of providing them in the Statistics Object.
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| Field Name | Type | Description |
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| ------------- | ------- | -------------------------------------------------------------------------------------------------------------------------------------- |
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| minimum | number | minimum value of the values in the band. If not present, the minimum value of the given data type or negative infinity can be assumed. |

‎examples/catalog.json

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"id": "examples",
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"type": "Catalog",
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"title": "Example Catalog",
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"stac_version": "1.1.0-beta.1",
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"stac_version": "1.1.0",
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"description": "This catalog is a simple demonstration of an example catalog that is used to organize a hierarchy of collections and their items.",
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"links": [
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"href": "https://raw.githubusercontent.com/radiantearth/stac-spec/v1.1.0/examples/catalog.json",
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‎examples/collection-only/collection-with-schemas.json

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"stac_version": "1.1.0",
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‎examples/collection-only/collection.json

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‎examples/collection.json

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"minimum": 0,
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"water": {
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"urban": {
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‎examples/collectionless-item.json

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‎examples/core-item.json

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‎examples/extended-item.json

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"statistics": {
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‎examples/extensions-collection/collection.json

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‎examples/extensions-collection/proj-example/proj-example.json

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‎examples/simple-item.json

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‎item-spec/json-schema/bands.json

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‎item-spec/json-schema/basics.json

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‎item-spec/json-schema/common.json

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‎item-spec/json-schema/data-values.json

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"$id": "https://schemas.stacspec.org/v1.1.0/item-spec/json-schema/data-values.json#",
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‎item-spec/json-schema/datetime.json

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"$id": "https://schemas.stacspec.org/v1.1.0/item-spec/json-schema/datetime.json",
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‎item-spec/json-schema/instrument.json

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"$id": "https://schemas.stacspec.org/v1.1.0/item-spec/json-schema/instrument.json",
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‎item-spec/json-schema/item.json

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‎item-spec/json-schema/licensing.json

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{
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"$schema": "http://json-schema.org/draft-07/schema#",
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"$id": "https://schemas.stacspec.org/v1.1.0-beta.1/item-spec/json-schema/licensing.json",
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"$id": "https://schemas.stacspec.org/v1.1.0/item-spec/json-schema/licensing.json",
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"title": "Licensing Fields",
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"type": "object",
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"properties": {

‎item-spec/json-schema/provider.json

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{
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"$schema": "http://json-schema.org/draft-07/schema#",
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"$id": "https://schemas.stacspec.org/v1.1.0-beta.1/item-spec/json-schema/provider.json",
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"$id": "https://schemas.stacspec.org/v1.1.0/item-spec/json-schema/provider.json",
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"title": "Provider Fields",
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"type": "object",
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"properties": {

‎package.json

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{
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"name": "stac-spec",
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"version": "1.1.0-beta.1",
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"version": "1.1.0",
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"description": "STAC spec helpers to check the spec.",
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"repository": "https://github.com/radiantearth/stac-spec",
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"license": "Apache-2.0",

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