El ultimo sueño
type: MusicGroup
genre: cold wave
genre: darkwave
genre: post-punk
popularity: 18
followers: 5750
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x42b7eb9bf40d68b1c70b117e5227c1f422aac2c8a78d5a3f40c0f3c110db3cf8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953697
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953697
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/73c50114-a58e-4cb4-857e-c3152c36f0a6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/73c50114-a58e-4cb4-857e-c3152c36f0a6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/73c50114-a58e-4cb4-857e-c3152c36f0a6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T21:49:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x42b7eb9bf40d68b1c70b117e5227c1f422aac2c8a78d5a3f40c0f3c110db3cf8","name":"El ultimo sueño","registered_at":"2026-06-14T16:38:22Z","symbol":"NIM0512658","token_address":"0x70d444c9e7ffb972cb7cf8610555e80db3909596","type":"artist","uuid":"73c50114-a58e-4cb4-857e-c3152c36f0a6"}
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 0x42b7eb9bf40d68b1c70b117e5227c1f422aac2c8a78d5a3f40c0f3c110db3cf8. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73c50114-a58e-4cb4-857e-c3152c36f0a6.json and https://artists.proofprofile.net/proofs/artist/73c50114-a58e-4cb4-857e-c3152c36f0a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T21:49:28Z
  text: {"copyright_id":"0x42b7eb9bf40d68b1c70b117e5227c1f422aac2c8a78d5a3f40c0f3c110db3cf8","name":"El ultimo sueño","registered_at":"2026-06-14T16:38:22Z","symbol":"NIM0512658","token_address":"0x70d444c9e7ffb972cb7cf8610555e80db3909596","type":"artist","uuid":"73c50114-a58e-4cb4-857e-c3152c36f0a6"}
album: Heroes de los 80. El túnel del tiempo
  type: MusicAlbum
  date published: 1984
  track: El reloj se ha parado - O las espaldas en alto
    type: MusicRecording
    duration: PT2M19S
    duration ms: 139066
    explicit: false
    by artist: El ultimo sueño
    in album: Heroes de los 80. El túnel del tiempo
      type: MusicAlbum
      date published: 1984
    genre: cold wave
    genre: darkwave
    genre: post-punk
    isrc code: ES5151000388
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T10:22:04+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x94ded6cb05ce9a1fec331f745505bbf9fc563208b0650bb3020c486e7b6e017a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958397
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958397
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5151000388
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T10:29:45Z
    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 0x94ded6cb05ce9a1fec331f745505bbf9fc563208b0650bb3020c486e7b6e017a. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/ES5151000388.
      date published: 2026-07-17T10:29:45Z
    audio: El reloj se ha parado - O las espaldas en alto
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 143.687
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.502
      additional property: Energy
        type: PropertyValue
        value: 0.891
      additional property: Speechiness
        type: PropertyValue
        value: 0.062
      additional property: Acousticness
        type: PropertyValue
        value: 0.017
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.157
      additional property: Liveness
        type: PropertyValue
        value: 0.324
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.801
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.064
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: Los muebles están volando
    type: MusicRecording
    duration: PT3M9S
    duration ms: 189866
    explicit: false
    by artist: El ultimo sueño
    in album: Heroes de los 80. El túnel del tiempo
      type: MusicAlbum
      date published: 1984
    genre: cold wave
    genre: darkwave
    genre: post-punk
    isrc code: ES5151000390
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T06:21:47+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x43ebe50e904746a8f3b57c29a2e63bb4a094070bb7274f015a39a860f425ef05
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958376
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958376
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5151000390
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T06:41:00Z
    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 0x43ebe50e904746a8f3b57c29a2e63bb4a094070bb7274f015a39a860f425ef05. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/ES5151000390.
      date published: 2026-07-17T06:41:00Z
    audio: Los muebles están volando
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 146.532
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.479
      additional property: Energy
        type: PropertyValue
        value: 0.931
      additional property: Speechiness
        type: PropertyValue
        value: 0.162
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.092
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Liveness
type: PropertyValue
value: 0.238

Valence (Positivity)
type: PropertyValue
value: 0.452

Loudness (dB)
type: PropertyValue
value: -6.286

Key Name
type: PropertyValue
value: B

Mode Name
type: PropertyValue
value: Minor