Tuna de la Facultad de Derecho de Madrid
type: MusicGroup
popularity: 10
followers: 285
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9d27a555c313710a72791714b26f7fe8b3f53de447662dc578f8746010424d6b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/729e4352-970d-4d53-8b7d-efa6ec857ffb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/729e4352-970d-4d53-8b7d-efa6ec857ffb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/729e4352-970d-4d53-8b7d-efa6ec857ffb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9d27a555c313710a72791714b26f7fe8b3f53de447662dc578f8746010424d6b","name":"Tuna de la Facultad de Derecho de Madrid","registered_at":"2026-06-17T05:32:30Z","symbol":"NIM1296418","token_address":"0xaa0381b59c28668915880157bcd2031350d4f256","type":"artist","uuid":"729e4352-970d-4d53-8b7d-efa6ec857ffb"}
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 0x9d27a555c313710a72791714b26f7fe8b3f53de447662dc578f8746010424d6b. 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/729e4352-970d-4d53-8b7d-efa6ec857ffb.json and https://artists.proofprofile.net/proofs/artist/729e4352-970d-4d53-8b7d-efa6ec857ffb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x9d27a555c313710a72791714b26f7fe8b3f53de447662dc578f8746010424d6b","name":"Tuna de la Facultad de Derecho de Madrid","registered_at":"2026-06-17T05:32:30Z","symbol":"NIM1296418","token_address":"0xaa0381b59c28668915880157bcd2031350d4f256","type":"artist","uuid":"729e4352-970d-4d53-8b7d-efa6ec857ffb"}
album: Pasa la Tuna
  type: MusicAlbum
  date published: 1962-10-01
  track: La Banderita
    type: MusicRecording
    duration: PT2M25S
    duration ms: 145600
    explicit: false
    by artist: Tuna de la Facultad de Derecho de Madrid
    in album: Pasa la Tuna
      type: MusicAlbum
      date published: 1962-10-01
    isrc code: ES5271404908
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T19:01:01+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x01e6fd11b3f9a88dd07699e4c85b5fdb264d9baa7e03e4409fd9ea547349d111
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956826
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956826
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5271404908
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T19:27:56Z
    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 0x01e6fd11b3f9a88dd07699e4c85b5fdb264d9baa7e03e4409fd9ea547349d111. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES5271404908.
      date published: 2026-07-05T19:27:56Z
    audio: La Banderita
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 122.104
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.375
      additional property: Energy
        type: PropertyValue
        value: 0.602
      additional property: Speechiness
        type: PropertyValue
        value: 0.038
      additional property: Acousticness
        type: PropertyValue
        value: 0.96
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.003
      additional property: Liveness
        type: PropertyValue
        value: 0.317
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.823
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.534
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: La Tuna (Remasterizado 2023)
  type: MusicAlbum
  date published: 1976
album: Gaudeamus Igitur
  type: MusicAlbum
  date published: 1976-09-29