GitLab

User Story

As a Crown blockchain user, I want to be able to register/issue a cryptographic token representing a document or another unique asset so that I can prove existence, time registration and authenticity of that asset anytime.

Requirements

• An nf-token entry should contain a 256-bit binary string representing a token. It can be an SHA-256 hash or another user-defined unique binary data. The token id must be unique in the current token type namespace.
• An nf-token entry should contain a unique id representing current nf-token type/protocol.
• There must be a way to prove the token ownership.
• There should be a way to add metadata to the token.

Tasks

• Implement nf-token registration transaction using special-transactions
• Implement nf-tokens data structure in-memory handling
• Implement JSON RPC API to issue new nf tokens
• TxMemPool confict handling
• Block processing
• Include spec-tx data in json formatted transactions (link)
• CreateTransaction extraPayload (link)
• Unit-tests
• Debugging
• Refactor code, get rid of TODOs
• Code Review
• QA

Definition of done

• Ready for production after QA check.

How to demo

• Open Crown wallet console.
• Run nftoken issue/publish <nf-token-symbol> 507850195211dca75e1120ecfa0983b94af7fc221a0b68cc164ccbf8e8056057 <addr>.
• A token should be registered successfully.

Link/refs/notes/images

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