Grupo Réquiem
type: MusicGroup
popularity: 3
followers: 57
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfb27bd37236e3271a0e4a954587b6588813783740f62d1db5eee89206de21304
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953932
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953932
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1f323996-6acc-4c65-b00b-c5bd30705c1a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1f323996-6acc-4c65-b00b-c5bd30705c1a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1f323996-6acc-4c65-b00b-c5bd30705c1a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T11:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfb27bd37236e3271a0e4a954587b6588813783740f62d1db5eee89206de21304","name":"Grupo Réquiem","registered_at":"2026-06-16T00:28:16Z","symbol":"NIM0880116","token_address":"0xd8c182179be2bba60132b851ebd2c15f8780bf5a","type":"artist","uuid":"1f323996-6acc-4c65-b00b-c5bd30705c1a"}
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 0xfb27bd37236e3271a0e4a954587b6588813783740f62d1db5eee89206de21304. Chain 2 (Bitcoin): anchored in block 953932 (2026-06-16T11:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f323996-6acc-4c65-b00b-c5bd30705c1a.json and https://artists.proofprofile.net/proofs/artist/1f323996-6acc-4c65-b00b-c5bd30705c1a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T11:10:43Z
  text: {"copyright_id":"0xfb27bd37236e3271a0e4a954587b6588813783740f62d1db5eee89206de21304","name":"Grupo Réquiem","registered_at":"2026-06-16T00:28:16Z","symbol":"NIM0880116","token_address":"0xd8c182179be2bba60132b851ebd2c15f8780bf5a","type":"artist","uuid":"1f323996-6acc-4c65-b00b-c5bd30705c1a"}
album: Etapa Cero
  type: MusicAlbum
  date published: 2023-12-06
  track: Aqui Nada Va A Cambiar
    type: MusicRecording
    duration: PT2M55S
    duration ms: 175090
    explicit: false
    by artist: Grupo Réquiem
    in album: Etapa Cero
      type: MusicAlbum
      date published: 2023-12-06
    isrc code: QZWFL2332856
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T08:54:58+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbf0f68753848e1d4d99e055cc9f33f5cce26c8e5de5266f82064725eed94dff0
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958853
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958853
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFL2332856
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T11:58:23Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0f68753848e1d4d99e055cc9f33f5cce26c8e5de5266f82064725eed94dff0. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:58:23Z), 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/QZWFL2332856.
      date published: 2026-07-20T11:58:23Z
    audio: Aqui Nada Va A Cambiar
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 110.876
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.675
      additional property: Energy
        type: PropertyValue
        value: 0.89
      additional property: Speechiness
        type: PropertyValue
        value: 0.044
      additional property: Acousticness
        type: PropertyValue
        value: 0.161
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.344
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.768
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.365
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Live Session, Vol. 1
  type: MusicAlbum
  date published: 2024-05-08
album: Perdón
  type: MusicAlbum
  date published: 2024-10-04