Quart Primera
type: MusicGroup
popularity: 12
followers: 4480
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x479de6010bc89cfbbae700fe7d2470813de86dffc62d97ec3667ad95468205c9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953772
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953772
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c7e58f8f-98f8-420f-9488-ce6c54f57b07.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c7e58f8f-98f8-420f-9488-ce6c54f57b07.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c7e58f8f-98f8-420f-9488-ce6c54f57b07
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T10:33:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x479de6010bc89cfbbae700fe7d2470813de86dffc62d97ec3667ad95468205c9","name":"Quart Primera","registered_at":"2026-06-15T01:27:49Z","symbol":"NIM0638983","token_address":"0x1ad7c3cd8b84ac8af936830b673b0bc417af62db","type":"artist","uuid":"c7e58f8f-98f8-420f-9488-ce6c54f57b07"}
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 0x479de6010bc89cfbbae700fe7d2470813de86dffc62d97ec3667ad95468205c9. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7e58f8f-98f8-420f-9488-ce6c54f57b07.json and https://artists.proofprofile.net/proofs/artist/c7e58f8f-98f8-420f-9488-ce6c54f57b07.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T11:57:35Z
  text: {"copyright_id":"0x479de6010bc89cfbbae700fe7d2470813de86dffc62d97ec3667ad95468205c9","name":"Quart Primera","registered_at":"2026-06-15T01:27:49Z","symbol":"NIM0638983","token_address":"0x1ad7c3cd8b84ac8af936830b673b0bc417af62db","type":"artist","uuid":"c7e58f8f-98f8-420f-9488-ce6c54f57b07"}
album: El Món en un Cafè
  type: MusicAlbum
  date published: 2010-11-09
  track: Doctor
    type: MusicRecording
    duration: PT3M46S
    duration ms: 226011
    explicit: false
    by artist: Quart Primera
    in album: El Món en un Cafè
      type: MusicAlbum
      date published: 2010-11-09
    isrc code: ES6101027701
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T05:27:07+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x69bf7fd3770b8cfdfcda996cfce2529a7e995fceefe00f5835df73101d976005
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6101027701
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 0x69bf7fd3770b8cfdfcda996cfce2529a7e995fceefe00f5835df73101d976005. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES6101027701.
      date published: 2026-07-05T10:01:46Z
    audio: Doctor
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 140.98
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.559
      additional property: Energy
        type: PropertyValue
        value: 0.614
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.713
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.069
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.465
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.994
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: El Món en un Cafè
    type: MusicRecording
    duration: PT4M26S
    duration ms: 266893
    explicit: false
    by artist: Quart Primera
    in album: El Món en un Cafè
      type: MusicAlbum
      date published: 2010-11-09
    isrc code: ES6101027707
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T00:19:42+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x29e3235bc700b542e438b1d9aca64ddf4669da5dd2660c7af2753fa685c98258
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958091
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958091
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6101027707
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T03:17:03Z
    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 0x29e3235bc700b542e438b1d9aca64ddf4669da5dd2660c7af2753fa685c98258. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/ES6101027707.
      date published: 2026-07-15T03:17:03Z
    audio: El Món en un Cafè
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 125.527
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.551
      additional property: Energy
        type: PropertyValue
        value: 0.395
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.577
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.042
      additional property: Liveness
        type: PropertyValue
        value: 0.089
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.113
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.605
      additional property: Key Name
      additional property: Mode Name
album: Els Dracs No Mengen Vegetals
album: Pel·lícules - EP
album: Pel·lícules (Spotify Bonus Track Version)
album: Neurones a la Punta d'un Iceberg - Single
album: Neurones a la Punta d'un Iceberg

Key Name
type: PropertyValue
value: Eb

Mode Name
type: PropertyValue
value: Major

Els Dracs No Mengen Vegetals
type: MusicAlbum
date published: 2011-04-18

Pel·lícules - EP
type: MusicAlbum
date published: 2012-10-09

Pel·lícules (Spotify Bonus Track Version)
type: MusicAlbum
date published: 2012-11-06
track: El Teu Amant
  type: MusicRecording
  duration: PT4M16S
  duration ms: 256640
  explicit: false
  by artist: Quart Primera
  in album: Pel·lícules (Spotify Bonus Track Version)
    type: MusicAlbum
    date published: 2012-11-06
  isrc code: ES6101229608
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T01:16:16+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x78db80c053f7ce081ab81b8a4ace67e366377f845951068c41631c8b833dff47
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956856
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956856
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6101229608
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-06T01:25:57Z
  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 0x78db80c053f7ce081ab81b8a4ace67e366377f845951068c41631c8b833dff47. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES6101229608.
    date published: 2026-07-06T01:25:57Z
  audio: El Teu Amant
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 115.959
    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.662
    additional property: Energy
      type: PropertyValue
      value: 0.255
    additional property: Speechiness
      type: PropertyValue
      value: 0.033
    additional property: Acousticness
      type: PropertyValue
      value: 0.875
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.014
    additional property: Liveness
      type: PropertyValue
      value: 0.138
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.112
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.83
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Major

Neurones a la Punta d'un Iceberg - Single
type: MusicAlbum
date published: 2015-03-03

Neurones a la Punta d'un Iceberg
type: MusicAlbum
date published: 2015-03-03
track: Tot Va Bé
  type: MusicRecording
  duration: PT4M49S
  duration ms: 289760
  explicit: false
  by artist: Quart Primera
  in album: Neurones a la Punta d'un Iceberg
    type: MusicAlbum
    date published: 2015-03-03
  isrc code: ES6101525203
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T00:58:43+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x37717eac7e51f0411b8382b4ea5985169be4746a80d81f479fdf82e32eefa186
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956856
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956856
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6101525203
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-06T01:25:57Z
  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 0x37717eac7e51f0411b8382b4ea5985169be4746a80d81f479fdf82e32eefa186. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES6101525203.
    date published: 2026-07-06T01:25:57Z
  audio: Tot Va Bé
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 129.917
    additional property: Musical Key
      type: PropertyValue
      value: 6
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.601
    additional property: Energy
      type: PropertyValue
      value: 0.65
    additional property: Speechiness
      type: PropertyValue
      value: 0.029
    additional property: Acousticness
      type: PropertyValue
      value: 0.183
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.085
    additional property: Liveness
      type: PropertyValue
      value: 0.18
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.491
    additional property: Loudness (dB)
      type: PropertyValue
      value: -6.057
    additional property: Key Name
      type: PropertyValue
      value: F#
    additional property: Mode Name
      type: PropertyValue
      value: Major