Mar de Fondo
type: MusicGroup
popularity: 8
followers: 441
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4aaadcef51664105df2f500887d9ced753c95b8b5f670e1f23e666d8f7e03ae5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/56f7d9a7-8233-4c89-8466-3de1200381e0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/56f7d9a7-8233-4c89-8466-3de1200381e0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/56f7d9a7-8233-4c89-8466-3de1200381e0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4aaadcef51664105df2f500887d9ced753c95b8b5f670e1f23e666d8f7e03ae5","name":"Mar de Fondo","registered_at":"2026-06-16T19:50:03Z","symbol":"NIM1157426","token_address":"0xb4cbc163689a461819d97f4de37583e3f993614f","type":"artist","uuid":"56f7d9a7-8233-4c89-8466-3de1200381e0"}
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 0x4aaadcef51664105df2f500887d9ced753c95b8b5f670e1f23e666d8f7e03ae5. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56f7d9a7-8233-4c89-8466-3de1200381e0.json and https://artists.proofprofile.net/proofs/artist/56f7d9a7-8233-4c89-8466-3de1200381e0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x4aaadcef51664105df2f500887d9ced753c95b8b5f670e1f23e666d8f7e03ae5","name":"Mar de Fondo","registered_at":"2026-06-16T19:50:03Z","symbol":"NIM1157426","token_address":"0xb4cbc163689a461819d97f4de37583e3f993614f","type":"artist","uuid":"56f7d9a7-8233-4c89-8466-3de1200381e0"}
album: 1906
  type: MusicAlbum
  date published: 2014-08-19
  track: 1906 (Himno Non Oficial Rc Deportivo de la Coruña)
    type: MusicRecording
    duration: PT4M17S
    duration ms: 257493
    explicit: false
    by artist: Mar de Fondo
    in album: 1906
      type: MusicAlbum
      date published: 2014-08-19
    isrc code: QM6P41888873
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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      type: PropertyValue
      value: 2026-06-29T15:01:13+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
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    additional property: OTSHash
    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956375
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P41888873
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T16:51:38Z
    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 0x5b6cf05612287cb8863aa25a64ccae0ee5d061e4fbe47dbe1949c21681d6ce70. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6P41888873.
      date published: 2026-07-02T16:51:38Z
    audio: 1906 (Himno Non Oficial Rc Deportivo de la Coruña)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 94.997
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.326
      additional property: Energy
        type: PropertyValue
        value: 0.903
      additional property: Speechiness
        type: PropertyValue
        value: 0.049
      additional property: Acousticness
        type: PropertyValue
        value: 0.381
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.129
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.237
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.361
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Destellos De Oscuridad
  type: MusicAlbum
  date published: 2015-10-30
album: Destellos de Oscuridad
  type: MusicAlbum
  date published: 2015-10-30
album: Maldita Blancanieves
  type: MusicAlbum
  date published: 2018-03-21
album: En Algún Lugar
  type: MusicAlbum
  date published: 2018-04-10
album: Unha Noite Na Eira do Trigo
  type: MusicAlbum
  date published: 2018-04-24
album: Pulsaciones
  type: MusicAlbum
  date published: 2018-04-27
album: Vacío
  type: MusicAlbum
  date published: 2019-06-25
album: 1906 Fillos de Breogán (Himno non oficial RC. Deportivo de La coruña)
  type: MusicAlbum
  date published: 2020-02-18
  track: 1906 Fillos de Breogán (Himno Non oficial RC. Deportivo de La Coruña)
    type: MusicRecording
    duration: PT4M30S
    duration ms: 270371
    explicit: false
    by artist: Mar de Fondo
    in album: 1906 Fillos de Breogán (Himno non oficial RC. Deportivo de La coruña)
      type: MusicAlbum
      date published: 2020-02-18
    isrc code: QM4TW2083554
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T15:15:26+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x793486191dc3f5241b15c5d5dd6d71364f44713f7217d5c57676e389ca52b1a5
    additional property: OTSHash
    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958746
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW2083554
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T18:17:40Z
    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 0x793486191dc3f5241b15c5d5dd6d71364f44713f7217d5c57676e389ca52b1a5. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:17:40Z), 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/QM4TW2083554.
      date published: 2026-07-19T18:17:40Z
    audio: 1906 Fillos de Breogán (Himno Non oficial RC. Deportivo de La Coruña)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 96.056
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      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
album: Crisis de Fé
album: Paralelos Divergentes
album: Mar de Fondo
album: Eterno
album: 38 Pasos

Danceability
type: PropertyValue
value: 0.477

Energy
type: PropertyValue
value: 0.496

Speechiness
type: PropertyValue
value: 0.025

Acousticness
type: PropertyValue
value: 0.109

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.354

Valence (Positivity)
type: PropertyValue
value: 0.495

Loudness (dB)
type: PropertyValue
value: -12.576

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major

Crisis de Fé
type: MusicAlbum
date published: 2020-03-17

Paralelos Divergentes
type: MusicAlbum
date published: 2020-05-28

Mar de Fondo
type: MusicAlbum
date published: 2021-04-30

Eterno
type: MusicAlbum
date published: 2021-09-24

38 Pasos
type: MusicAlbum
date published: 2021-10-15