Dúo 7 Sellos
type: MusicGroup
genre: spanish-language reggae
popularity: 5
followers: 123
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0e97136677e1a4615209ce6f7232159d8a0057b0f4c95627d3756e5b92a0c715
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954004
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954004
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/32743bb0-ffbb-4a73-8b60-382440eb769c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/32743bb0-ffbb-4a73-8b60-382440eb769c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/32743bb0-ffbb-4a73-8b60-382440eb769c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T21:01:04Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0e97136677e1a4615209ce6f7232159d8a0057b0f4c95627d3756e5b92a0c715","name":"Dúo 7 Sellos","registered_at":"2026-06-16T07:11:07Z","symbol":"NIM0976339","token_address":"0xa97688622d54cdf7e4898628079f289387f0685b","type":"artist","uuid":"32743bb0-ffbb-4a73-8b60-382440eb769c"}
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 0x0e97136677e1a4615209ce6f7232159d8a0057b0f4c95627d3756e5b92a0c715. Chain 2 (Bitcoin): anchored in block 954004 (2026-06-16T21:01:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32743bb0-ffbb-4a73-8b60-382440eb769c.json and https://artists.proofprofile.net/proofs/artist/32743bb0-ffbb-4a73-8b60-382440eb769c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T21:01:04Z
  text: {"copyright_id":"0x0e97136677e1a4615209ce6f7232159d8a0057b0f4c95627d3756e5b92a0c715","name":"Dúo 7 Sellos","registered_at":"2026-06-16T07:11:07Z","symbol":"NIM0976339","token_address":"0xa97688622d54cdf7e4898628079f289387f0685b","type":"artist","uuid":"32743bb0-ffbb-4a73-8b60-382440eb769c"}
album: Más Vida
  type: MusicAlbum
  date published: 2022-12-03
album: Don't Cry
  type: MusicAlbum
  date published: 2023-03-18
  track: Don't Cry
    type: MusicRecording
    duration: PT3M54S
    duration ms: 234348
    explicit: false
    by artist: Dúo 7 Sellos
    in album: Don't Cry
      type: MusicAlbum
      date published: 2023-03-18
    genre: spanish-language reggae
    isrc code: QZPYN2364590
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T06:27:57+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8bf9ee802a1af399d246b6ba0c3df24eb21a158b19a47de9bec4ca42aa1f8edd
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956474
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956474
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPYN2364590
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T08:56:35Z
    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 0x8bf9ee802a1af399d246b6ba0c3df24eb21a158b19a47de9bec4ca42aa1f8edd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZPYN2364590.
      date published: 2026-07-03T08:56:35Z
    audio: Don't Cry
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 80.07
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.643
      additional property: Energy
        type: PropertyValue
        value: 0.736
      additional property: Speechiness
        type: PropertyValue
        value: 0.079
      additional property: Acousticness
        type: PropertyValue
        value: 0.1
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.099
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.878
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.545
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Amor y Fuego
  type: MusicAlbum
  date published: 2023-07-12