CreativeWork.info

A Registry for Creative Works, Instances & Derivatives

 

Christopher Allen

ChristopherA@LifeWithAlacrity.com

@ChristopherA

The Problem

  • Creative works are trees
    • iterative versions over time (ala git)
    • multiple parallel versions
      • lossless instances
        • .svg vs .pdf, .flac vs .alc
      • lossy instances
        • .png vs .jpg, .m4a vs mp3
    • forks and derivatives
    • related works
      • sketches, notes
      • collective works (Star Wars Universe)

The Problem

  • Creative Attribution is hard
    • ​creative contributions
    • editorial contributions
    • ownership, licenses
    • remix, embedded works
    • when created
  • Metadata is hard
    • creator metadata
    • curator metadata
    • user metadata
    • changes over time

Current best practice is DOI

  • Advantages
    • persistent
    • dns-like distributed
  • Disadvantages
    • centralized registry
  • names distributed, not data
  • expensive ($1 per work)
  • restricted access (academics mostly)

Hashes are not good enough

  • Good for unique instances, but not for 
    • iterations over time
    • parallel versions
    • forks
    • derivatives
    • related works
    • metadata from multiple sources
      • owner, curator, user

A solution

  • Register a hardened BIP32 public key branch on the blockchain
    • starting m/23/0/0'/0
      • master/branch/account/workid/instanceid
        • xpub6C5prE6HmoF6diNt2BQRPDakx3tXFr6…
    • children keys are used to sign instances​​
      • public key for instance 1 of work
        • wJyoJ6rC4o7uti4LJKMQYpLoQGrFipLjPc
      • hash and signature of work is registered on the blockchain

Looking up

  • user hashes instance
  • looks up hash, gets a number of hash+signatures
  • looks up hash+signatures and gets metadata
    • source may be author, curator, or user
  • metadata also returns creative work id
    • provably associated with signature because of bip32
    • proof of existence for both instances
      and creative works 
    • can look up other instances by deriving bip32 key and looking up other instances
    • can look up other metadata by searching hashes

Key Points

  • just hashing creative works isn't good enough
    • even hashing fingerprints doesn't connect many kinds derivatives and sources
  • metadata is not created only by owners
    • curator and user metadata may sometimes be more reliable
  • lets find a single method that works for lots of kinds of formats
    • images, movies, pdfs, audio, etc.
  • this bip32 branch signatures technique is interesting
    • may be useful for other things, like identity or auth

For more information

Christopher Allen

ChristopherA@LifeWithAlacrity.com

@ChristopherA

 

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Creative Work Info

By christophera

Creative Work Info

  • 627
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