Barbara Melzer
type: MusicGroup
popularity: 12
followers: 66
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x99d02226e6d926d852edf558a6552a2c491ba84315f25f8dde9856786f722896
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953777
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953777
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ce93d936-b85c-4eca-b4dd-eb0ed4c0f7dd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ce93d936-b85c-4eca-b4dd-eb0ed4c0f7dd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ce93d936-b85c-4eca-b4dd-eb0ed4c0f7dd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T11:52:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x99d02226e6d926d852edf558a6552a2c491ba84315f25f8dde9856786f722896","name":"Barbara Melzer","registered_at":"2026-06-15T02:08:45Z","symbol":"NIM0648763","token_address":"0x4687778402abc47d0ceb0b959965d914dd71c1ff","type":"artist","uuid":"ce93d936-b85c-4eca-b4dd-eb0ed4c0f7dd"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d02226e6d926d852edf558a6552a2c491ba84315f25f8dde9856786f722896. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce93d936-b85c-4eca-b4dd-eb0ed4c0f7dd.json and https://artists.proofprofile.net/proofs/artist/ce93d936-b85c-4eca-b4dd-eb0ed4c0f7dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T11:52:51Z
  text: {"copyright_id":"0x99d02226e6d926d852edf558a6552a2c491ba84315f25f8dde9856786f722896","name":"Barbara Melzer","registered_at":"2026-06-15T02:08:45Z","symbol":"NIM0648763","token_address":"0x4687778402abc47d0ceb0b959965d914dd71c1ff","type":"artist","uuid":"ce93d936-b85c-4eca-b4dd-eb0ed4c0f7dd"}
track: Primadonna - 2008 Polish Cast Recording Of "The Phantom Of The Opera"
  type: MusicRecording
  duration: PT3M40S
  duration ms: 220173
  explicit: false
  by artist: Andrew Lloyd Webber
  by artist: "The Phantom Of The Opera" 2008 Polish Cast
  by artist: Jakub Szydlowski
  by artist: Wojciech Dmochowski
  by artist: Marcin Mroziński
  by artist: Barbara Melzer
  by artist: Tomasz Jedz
  by artist: Anna Sztejner
  by artist: Ida Nowakowska
  in album: The Phantom Of The Opera: Global Edition
    type: MusicAlbum
    date published: 2022-09-02
  genre: musicals
  isrc code: GBUM72204947
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-29T15:47:50+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xf3ca8473e7e96890dd57c4b3461a090dc2a95788d8f7c02855e05b3360fe232f
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960138
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960138
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBUM72204947
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-29T19:35:34Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ca8473e7e96890dd57c4b3461a090dc2a95788d8f7c02855e05b3360fe232f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBUM72204947.
    date published: 2026-07-29T19:35:34Z
  audio: Primadonna - 2008 Polish Cast Recording Of "The Phantom Of The Opera"
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 120.145
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.262
    additional property: Energy
      type: PropertyValue
      value: 0.534
    additional property: Speechiness
      type: PropertyValue
      value: 0.033
    additional property: Acousticness
      type: PropertyValue
      value: 0.835
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.087
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.297
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.805
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Major