Callum Melville
type: MusicGroup
popularity: 2
followers: 75
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x55642f86786cd35a04a0074a9c93731bfa387d7b18e5b020a0273e88ef27b2f6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e9867a65-f437-49ae-a4ac-703f65f354ab.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e9867a65-f437-49ae-a4ac-703f65f354ab.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e9867a65-f437-49ae-a4ac-703f65f354ab
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x55642f86786cd35a04a0074a9c93731bfa387d7b18e5b020a0273e88ef27b2f6","name":"Callum Melville","registered_at":"2026-06-21T10:27:27Z","symbol":"NIM1898924","token_address":"0x3faeaf188f09daeb1b428d49411ebf673826d1a1","type":"artist","uuid":"e9867a65-f437-49ae-a4ac-703f65f354ab"}
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 0x55642f86786cd35a04a0074a9c93731bfa387d7b18e5b020a0273e88ef27b2f6. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9867a65-f437-49ae-a4ac-703f65f354ab.json and https://artists.proofprofile.net/proofs/artist/e9867a65-f437-49ae-a4ac-703f65f354ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T11:50:32Z
  text: {"copyright_id":"0x55642f86786cd35a04a0074a9c93731bfa387d7b18e5b020a0273e88ef27b2f6","name":"Callum Melville","registered_at":"2026-06-21T10:27:27Z","symbol":"NIM1898924","token_address":"0x3faeaf188f09daeb1b428d49411ebf673826d1a1","type":"artist","uuid":"e9867a65-f437-49ae-a4ac-703f65f354ab"}
album: Boombox Reggae
  type: MusicAlbum
  date published: 2023-07-26
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  type: MusicAlbum
  date published: 2024-02-01
album: UK Hip Hop
  type: MusicAlbum
  date published: 2024-08-07
album: Phonk
  type: MusicAlbum
  date published: 2025-03-31