J. Cruz
type: MusicGroup
popularity: 17
followers: 546
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbc03540e25dacbff8ca3b6ef5c07881efb3029fe9cb42426e98ac43c60848712
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953803
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953803
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e28ae457-c1d7-455a-9273-b4eae9732d79.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e28ae457-c1d7-455a-9273-b4eae9732d79.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e28ae457-c1d7-455a-9273-b4eae9732d79
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T15:41:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbc03540e25dacbff8ca3b6ef5c07881efb3029fe9cb42426e98ac43c60848712","name":"J. Cruz","registered_at":"2026-06-15T04:19:46Z","symbol":"NIM0680027","token_address":"0x891592cc9de4d2104b1c2cf1c7e42f1afbff4a97","type":"artist","uuid":"e28ae457-c1d7-455a-9273-b4eae9732d79"}
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 0xbc03540e25dacbff8ca3b6ef5c07881efb3029fe9cb42426e98ac43c60848712. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e28ae457-c1d7-455a-9273-b4eae9732d79.json and https://artists.proofprofile.net/proofs/artist/e28ae457-c1d7-455a-9273-b4eae9732d79.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T15:41:00Z
  text: {"copyright_id":"0xbc03540e25dacbff8ca3b6ef5c07881efb3029fe9cb42426e98ac43c60848712","name":"J. Cruz","registered_at":"2026-06-15T04:19:46Z","symbol":"NIM0680027","token_address":"0x891592cc9de4d2104b1c2cf1c7e42f1afbff4a97","type":"artist","uuid":"e28ae457-c1d7-455a-9273-b4eae9732d79"}
album: Bésame
  type: MusicAlbum
  date published: 2019-03-21
album: Sin Filtro
  type: MusicAlbum
  date published: 2020-11-20
album: Sin Palabras
  type: MusicAlbum
  date published: 2021-03-12
album: Mi Vicio
  type: MusicAlbum
  date published: 2021-05-27
album: Gilipoollas
  type: MusicAlbum
  date published: 2021-07-08
album: Me Disparé
  type: MusicAlbum
  date published: 2021-09-30
  track: Me Disparé
    type: MusicRecording
    duration: PT3M57S
    duration ms: 237857
    explicit: false
    by artist: J. Cruz
    in album: Me Disparé
      type: MusicAlbum
      date published: 2021-09-30
    isrc code: ES5702101635
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-06T19:58:22+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x902f8276eae91742459e17199c7fa740bf5be3773883e863230990677e75db53
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 953515
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/953515
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5702101635
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T12:53:06Z
    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 0x902f8276eae91742459e17199c7fa740bf5be3773883e863230990677e75db53. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES5702101635.
      date published: 2026-06-13T12:53:06Z
    audio: Me Disparé
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 164.251
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.457
      additional property: Energy
        type: PropertyValue
        value: 0.694
      additional property: Speechiness
        type: PropertyValue
        value: 0.045
      additional property: Acousticness
        type: PropertyValue
        value: 0.211
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.171
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.396
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.922
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Lo Que Hay
  type: MusicAlbum
  date published: 2022-01-27
album: No Eres Tú Ni Yo Tampoco
  type: MusicAlbum
  date published: 2022-03-24
track: Perdido por Madrid
  type: MusicRecording
  duration: PT3M14S
  duration ms: 194907
  explicit: false
  by artist: Freddie Flowers
  by artist: J. Cruz
  in album: Perdido por Madrid
    type: MusicAlbum
    date published: 2022-09-15
  isrc code: FRX452250111
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T18:54:27+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5e5bdc96957a90ff41660d9192d395b2297eda75f0778b315645e1aa87b0a325
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957120
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957120
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452250111
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:22:41Z
  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 0x5e5bdc96957a90ff41660d9192d395b2297eda75f0778b315645e1aa87b0a325. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX452250111.
    date published: 2026-07-08T03:22:41Z
  audio: Perdido por Madrid
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 167.045
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
    additional property: Energy
    additional property: Speechiness
    additional property: Acousticness
    additional property: Instrumentalness
    additional property: Liveness
    additional property: Valence (Positivity)
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name

Danceability
type: PropertyValue
value: 0.5

Energy
type: PropertyValue
value: 0.724

Speechiness
type: PropertyValue
value: 0.045

Acousticness
type: PropertyValue
value: 0.012

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.362

Valence (Positivity)
type: PropertyValue
value: 0.697

Loudness (dB)
type: PropertyValue
value: -9.066

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major