Grupo Umbral
type: MusicGroup
genre: cumbia
genre: cumbia norteña
popularity: 7
followers: 315
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x91c63146c391b598aae5bcc684013bc920e38a989c181b2c41c188ff72ffbd10
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954513
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a0811058-d8ec-460f-9fa9-2be2c708280d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a0811058-d8ec-460f-9fa9-2be2c708280d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a0811058-d8ec-460f-9fa9-2be2c708280d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T06:31:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x91c63146c391b598aae5bcc684013bc920e38a989c181b2c41c188ff72ffbd10","name":"Grupo Umbral","registered_at":"2026-06-20T05:12:29Z","symbol":"NIM1526025","token_address":"0xcfbcba0ef260f1436f3f4fab2ef3d150ec12bef0","type":"artist","uuid":"a0811058-d8ec-460f-9fa9-2be2c708280d"}
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 0x91c63146c391b598aae5bcc684013bc920e38a989c181b2c41c188ff72ffbd10. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a0811058-d8ec-460f-9fa9-2be2c708280d.json and https://artists.proofprofile.net/proofs/artist/a0811058-d8ec-460f-9fa9-2be2c708280d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T06:31:18Z
  text: {"copyright_id":"0x91c63146c391b598aae5bcc684013bc920e38a989c181b2c41c188ff72ffbd10","name":"Grupo Umbral","registered_at":"2026-06-20T05:12:29Z","symbol":"NIM1526025","token_address":"0xcfbcba0ef260f1436f3f4fab2ef3d150ec12bef0","type":"artist","uuid":"a0811058-d8ec-460f-9fa9-2be2c708280d"}
album: Grupo Umbral
  type: MusicAlbum
  date published: 1991
  track: El Aventurero
    type: MusicRecording
    duration: PT3M45S
    duration ms: 225226
    explicit: false
    by artist: Grupo Umbral
    in album: Grupo Umbral
      type: MusicAlbum
      date published: 1991
    genre: cumbia
    genre: cumbia norteña
    isrc code: QZGLS2176338
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T19:38:32+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3a23a7c832c3fc3123f3996b2ae6142794592a74623269f257a5e33904517e07
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958196
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958196
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS2176338
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T22:42:01Z
    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 0x3a23a7c832c3fc3123f3996b2ae6142794592a74623269f257a5e33904517e07. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:42:01Z), 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/QZGLS2176338.
      date published: 2026-07-15T22:42:01Z
    audio: El Aventurero
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 103.934
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.649
      additional property: Energy
        type: PropertyValue
        value: 0.658
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.338
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.091
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.953
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.541
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: Enfermera
    type: MusicRecording
    duration: PT4M9S
    duration ms: 249493
    explicit: false
    by artist: Grupo Umbral
    in album: Grupo Umbral
      type: MusicAlbum
      date published: 1991
    genre: cumbia
    genre: cumbia norteña
    isrc code: QZGLS2176341
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T21:27:24+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2ef184d135d4133181b7914eb40b3498d76e9003a6e0be1300b65097651b820a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956728
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956728
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS2176341
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:43:49Z
    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 0x2ef184d135d4133181b7914eb40b3498d76e9003a6e0be1300b65097651b820a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZGLS2176341.
      date published: 2026-07-05T01:43:49Z
    audio: Enfermera
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 206.435
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.362
      additional property: Energy
        type: PropertyValue
        value: 0.651
      additional property: Speechiness
        type: PropertyValue
        value: 0.045
      additional property: Acousticness
        type: PropertyValue
        value: 0.119
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.286
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Siempre Te Amare
album: Traicionera

Valence (Positivity)
type: PropertyValue
value: 0.921

Loudness (dB)
type: PropertyValue
value: -7.399

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Minor

Siempre Te Amare
type: MusicAlbum
date published: 2023-09-05

Traicionera
type: MusicAlbum
date published: 2023-09-05