{"id":18454626,"url":"https://github.com/likecoin/iscn-specs","last_synced_at":"2026-01-22T05:04:33.835Z","repository":{"id":49511874,"uuid":"244333617","full_name":"likecoin/iscn-specs","owner":"likecoin","description":"International Standard Content Number - decentralized content registry","archived":false,"fork":false,"pushed_at":"2022-08-10T07:02:40.000Z","size":708,"stargazers_count":18,"open_issues_count":3,"forks_count":9,"subscribers_count":7,"default_branch":"master","last_synced_at":"2025-04-22T15:49:45.163Z","etag":null,"topics":["iscn","iscn-registration","iscn-specification","registry","specifications"],"latest_commit_sha":null,"homepage":"https://iscn.io","language":null,"has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"cc-by-sa-4.0","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/likecoin.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2020-03-02T09:42:10.000Z","updated_at":"2024-06-26T04:24:44.000Z","dependencies_parsed_at":"2022-09-19T13:11:52.995Z","dependency_job_id":null,"html_url":"https://github.com/likecoin/iscn-specs","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/likecoin/iscn-specs","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/likecoin%2Fiscn-specs","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/likecoin%2Fiscn-specs/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/likecoin%2Fiscn-specs/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/likecoin%2Fiscn-specs/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/likecoin","download_url":"https://codeload.github.com/likecoin/iscn-specs/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/likecoin%2Fiscn-specs/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":28655067,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-01-22T01:17:37.254Z","status":"online","status_checked_at":"2026-01-22T02:00:07.137Z","response_time":144,"last_error":null,"robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":true,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["iscn","iscn-registration","iscn-specification","registry","specifications"],"created_at":"2024-11-06T08:05:34.291Z","updated_at":"2026-01-22T05:04:33.815Z","avatar_url":"https://github.com/likecoin.png","language":null,"funding_links":[],"categories":[],"sub_categories":[],"readme":"# International Standard Content Number Specifications\n\nThe goal of International Standard Content Number, abbreviated as ISCN, is to create a fundamental schema for a digital content registration. The ISCN is a cornerstone to build a global, decentralised and resilient digital content registry. This schema helps to identify a specific digital content, records the content metadata, the intellectual property rights and the stakeholders of the creation.\n\n## ISCN Goals\n\nThe target of ISCN is to build a general digital content registration schema, and it should satisfy the following:\n\n1. Every ISCN has a unique global identifier\n1. All Changes of the metadata must be traceable\n1. The schema must be extensible\n1. Registering content fingerprint of the digital content\n1. Linking the all creation components as a creation footprint\n1. Connecting the digital content to the corresponding intellectual property rights\n1. Associating the stakeholders of the digital content and providing a hint for profit sharing\n\n## ISCN Data Model\n\nThe ISCN data model is composed of [linked data](#linked-data) from different data structures shown below. ISCN data is [JSON-LD](https://json-ld.org/) compatible:\n\n![ISCN data model](./images/iscn_data_model.png)\n\n- [Content Metadata](schema/contentMetadata/README.md): Basic content metadata.\n- [Footprint](schema/footprint/README.md): Referring to other contents (e.g. citation or derivative works)\n- [Record Notes](schema/recordNotes/README.md): Brief description of a content.\n- [Record Version](schema/recordVersion/README.md): Version of the ISCN record, independent of the content version.\n- [Stakeholder Info](schema/StakeholderInfo/README.md): Information of a entity who/which contributed to the content, and its weighting.\n- [Contribution Type](schema/contributionType/README.md): Type of the contribution of a StakeholderInfo\n- [ISCN Record](schema/record/README.md): The core metadata that acts as a kernel of ISCN, and it connects the content itself, the stakeholders, the fingerprints and other relevant metadata with a unique global identifier.\n- [Record Parent IPLD](schema/recordParentIPLD/README.md): The IPLD hash of the previous version of this record.\n- [Reward Proportion](schema/rewardProportion/README.md): The suggested reward propotion of a stakeholder.\n- [Content Fingerprints](schema/contentFingerprints/README.md): Fingerprints of the content, e.g. cryptographic hashe, URI, etc.\n- [Entity](schema/entity/README.md): Entity who should be cited and / or rewarded for the contribution on the content.\n- [Record Timestamp](schema/recordTimestamp/README.md): The timestamp of the current version of the ISCN record.\n- [Stakeholders](schema/stakeholders/README.md): List of StakeholderInfo contributed to this content.\n\nA full list of schema can be found at [schema](https://github.com/likecoin/iscn-specs/tree/master/schema), and ISCN record samples can be found in [here](https://github.com/likecoin/iscn-specs/tree/master/sample).\n\n## Linked Data\n\nLinked data is structured data that can be looked up via some methods, HTTP, RDF and URI but not limited to are all accepted.\n\n## ISCN Architecture\n\nThe complete ISCN registration is consist of a kernel [ISCN](schema/iscn.md) record to record the unique global identifier and maintain the stakeholders, and the content metadata by [stakeholders](schema/stakeholders/README.md), [contentFingerprints](schema/contentFingerprints/README.md) and [contentMetadata](schema/contentMetadata/README.md) corresponsibly. Other metadata can be added flexiblely through [JSON-LD](https://json-ld.org/) and [schema.org](https://schema.org/) standard. The basic architecture of an ISCN is shown below:\n\n![ISCN architecture](./images/iscn_architecture.png)\n\n## ISCN content registry\n\nA registry is a service provider for the ISCN registration, and a registry should provide service to register a digital content with metadata that follows the ISCN specification and to query. A unique ISCN registry name should be used for each registry. If any entities want to become a registry for ISCN, they can check if their desired registry name is used or record a new name [here](https://github.com/likecoin/iscn-registry-index).\n\n## ISCN Specification Guidelines\n\nAll contributors should create pull requests to propose the change of the specification. Contributors can post a proposal, and we call it ISCN Specification Proposal, abbreviated as ISP. For more detail about ISP, please check in [here](https://github.com/likecoin/iscn-specs/wiki/ISCN-Specification-Proposal).\n\n## Contributing \u0026 Discussion\n\nSuggestions, contributions, criticisms are welcome.\nDiscussion of specifications happens in [this repository's issues](https://github.com/likecoin/iscn-specs/issues) or via pull request.\n\n## License\n\nThis repository is only for documents. All of these are licensed under the [CC-BY-SA 4.0 license](https://github.com/likecoin/iscn-specs/blob/master/LICENSE), � 2020 LikeCoin Foundation Ltd.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Flikecoin%2Fiscn-specs","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Flikecoin%2Fiscn-specs","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Flikecoin%2Fiscn-specs/lists"}