Nelson Valdés
type: MusicGroup
genre: son cubano
genre: timba
genre: trova
popularity: 6
followers: 364
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6f8c1ca1d57614592b9c3e6107ea31341337bdcef892930adfe4ef70c9a4cfa4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954689
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954689
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e2c18eb3-9598-4887-a84f-bbc3ea62b185.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e2c18eb3-9598-4887-a84f-bbc3ea62b185.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e2c18eb3-9598-4887-a84f-bbc3ea62b185
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T10:35:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6f8c1ca1d57614592b9c3e6107ea31341337bdcef892930adfe4ef70c9a4cfa4","name":"Nelson Valdés","registered_at":"2026-06-21T07:29:56Z","symbol":"NIM1858975","token_address":"0xcc2681399d76e7ef6c8599ef6e0fa4a65c42c2cd","type":"artist","uuid":"e2c18eb3-9598-4887-a84f-bbc3ea62b185"}
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 0x6f8c1ca1d57614592b9c3e6107ea31341337bdcef892930adfe4ef70c9a4cfa4. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2c18eb3-9598-4887-a84f-bbc3ea62b185.json and https://artists.proofprofile.net/proofs/artist/e2c18eb3-9598-4887-a84f-bbc3ea62b185.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T10:35:31Z
  text: {"copyright_id":"0x6f8c1ca1d57614592b9c3e6107ea31341337bdcef892930adfe4ef70c9a4cfa4","name":"Nelson Valdés","registered_at":"2026-06-21T07:29:56Z","symbol":"NIM1858975","token_address":"0xcc2681399d76e7ef6c8599ef6e0fa4a65c42c2cd","type":"artist","uuid":"e2c18eb3-9598-4887-a84f-bbc3ea62b185"}
album: Labios en Cruz
  type: MusicAlbum
  date published: 2009
album: A la Mitad del Mundo
  type: MusicAlbum
  date published: 2010-01-01
album: A la Mitad del Mundo
  type: MusicAlbum
  date published: 2015-06-15
album: Te Doy Otra Canción
  type: MusicAlbum
  date published: 2016-10-12
album: Cubriendo Ausencias
  type: MusicAlbum
  date published: 2017-02-20
album: Te Doy Otra Canción (En Vivo)
  type: MusicAlbum
  date published: 2018-12-12
album: Cubriendo Ausencias
  type: MusicAlbum
  date published: 2019-05-20
  track: Cubriendo Ausencias
    type: MusicRecording
    duration: PT4M22S
    duration ms: 262986
    explicit: false
    by artist: Nelson Valdés
    in album: Cubriendo Ausencias
      type: MusicAlbum
      date published: 2019-05-20
    genre: son cubano
    genre: timba
    genre: trova
    isrc code: CUA021511165
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-13T14:13:18+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x271dc8969094d4f4a7c36bb1078ae73fbd1be3f83c6b1fe158eadf39707bd208
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957867
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957867
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CUA021511165
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T14:55:20Z
    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 0x271dc8969094d4f4a7c36bb1078ae73fbd1be3f83c6b1fe158eadf39707bd208. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/CUA021511165.
      date published: 2026-07-13T14:55:20Z
    audio: Cubriendo Ausencias
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 169.968
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.676
      additional property: Energy
        type: PropertyValue
        value: 0.695
      additional property: Speechiness
        type: PropertyValue
        value: 0.058
      additional property: Acousticness
        type: PropertyValue
        value: 0.702
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.237
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.896
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.001
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Con la Misma Pasión (En Vivo)
  type: MusicAlbum
  date published: 2021-08-24
album: Alzar la voz
  type: MusicAlbum
  date published: 2024-05-24