OpenChainGraph Suite · ART-199 · IP Licensing & Tokenization

License Election Certifier

Binds a license election (family, id, optional params) to a named asset and licensor DID, producing a deterministic terms_hash via SHA-256 over the JCS-canonical election core. Emits a portable certificate verifiable by ART-200. Not legal advice.

Cryptographic Mandate JCS SHA-256 DID Binding Zero PII Selection Only

🔒 All inputs are processed locally in your browser. No data is transmitted. Do not enter real personal data — use synthetic or anonymised inputs only.

⚠ This tool produces a deterministic certificate recording a stated license election. It does not constitute a legal agreement, does not guarantee enforceability, and is not legal advice. The licensor remains solely responsible for ensuring the elected license applies to their work. Consult a licensed attorney before relying on any output for commercial or legal decisions.

Presets:

Asset Reference

URI, IPFS CID, or identifier for the licensed asset. Examples: ipfs://baf..., https://opensea.io/assets/0x.../42, did:example:asset123.

Licensor DID

Decentralized Identifier of the rights holder. Examples: did:key:z6Mk..., did:pkh:eip155:1:0x..., did:story:...

License Family

License ID

License Params (JSON, optional)

Optional additional parameters, e.g. {"rev_share_pct":10}. Leave as {} for none.

Certificate

Certificate Version

Asset Ref

Licensor DID

License

Terms Hash

Verification Checks

Execution Hash (SHA-256)

Compliance Flags