W.E.B. DuBois
type: MusicGroup
genre: spoken word
popularity: 2
followers: 1018
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc16077361d5971229a1b415fd6cc6f4073868f9c44f3067cb78275bb95c71472
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/80409676-72c9-47e8-95b2-1276df389cc9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/80409676-72c9-47e8-95b2-1276df389cc9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/80409676-72c9-47e8-95b2-1276df389cc9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc16077361d5971229a1b415fd6cc6f4073868f9c44f3067cb78275bb95c71472","name":"W.E.B. DuBois","registered_at":"2026-06-17T10:20:46Z","symbol":"NIM1365140","token_address":"0xe5e05a977dd2d7984b60be4862a971c65541045b","type":"artist","uuid":"80409676-72c9-47e8-95b2-1276df389cc9"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16077361d5971229a1b415fd6cc6f4073868f9c44f3067cb78275bb95c71472. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80409676-72c9-47e8-95b2-1276df389cc9.json and https://artists.proofprofile.net/proofs/artist/80409676-72c9-47e8-95b2-1276df389cc9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xc16077361d5971229a1b415fd6cc6f4073868f9c44f3067cb78275bb95c71472","name":"W.E.B. DuBois","registered_at":"2026-06-17T10:20:46Z","symbol":"NIM1365140","token_address":"0xe5e05a977dd2d7984b60be4862a971c65541045b","type":"artist","uuid":"80409676-72c9-47e8-95b2-1276df389cc9"}
album: Socialism and the American Negro
  type: MusicAlbum
  date published: 1960-01-01
album: W.E.B. DuBois: A Recorded Autobiography, Interview with Moses Asch
  type: MusicAlbum
  date published: 1961-01-01