Varias Artistas
type: MusicGroup
genre: tango
popularity: 2
followers: 36
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x405dd952262b5facd51b41c50376141bd2146e049e71fdb084f390def8642a6c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e63ff20b-351d-44fe-8d73-3c5b172217e1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e63ff20b-351d-44fe-8d73-3c5b172217e1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e63ff20b-351d-44fe-8d73-3c5b172217e1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x405dd952262b5facd51b41c50376141bd2146e049e71fdb084f390def8642a6c","name":"Varias Artistas","registered_at":"2026-06-21T08:59:30Z","symbol":"NIM1882438","token_address":"0x4e339ddd53fe72d60518f05d5ca6dc9ca88f5d91","type":"artist","uuid":"e63ff20b-351d-44fe-8d73-3c5b172217e1"}
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 0x405dd952262b5facd51b41c50376141bd2146e049e71fdb084f390def8642a6c. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e63ff20b-351d-44fe-8d73-3c5b172217e1.json and https://artists.proofprofile.net/proofs/artist/e63ff20b-351d-44fe-8d73-3c5b172217e1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x405dd952262b5facd51b41c50376141bd2146e049e71fdb084f390def8642a6c","name":"Varias Artistas","registered_at":"2026-06-21T08:59:30Z","symbol":"NIM1882438","token_address":"0x4e339ddd53fe72d60518f05d5ca6dc9ca88f5d91","type":"artist","uuid":"e63ff20b-351d-44fe-8d73-3c5b172217e1"}
album: Platinum Collection: The World's Best Tangos (remastered)
  type: MusicAlbum
  date published: 2022-05-18
album: Platinum Collection: The World's Best Tangos, Vol. 3
  type: MusicAlbum
  date published: 2022-06-06
album: Platinum Collection: The World's Best Tangos, Vol. 1
  type: MusicAlbum
  date published: 2022-06-07
album: Platinum Collection: The World's Best Tangos, Vol. 4
  type: MusicAlbum
  date published: 2022-06-07
album: Platinum Collection: The World's Best Tangos, Vol. 13
  type: MusicAlbum
  date published: 2022-06-09
album: Platinum Collection: The World's Best Tangos, Vol. 14
  type: MusicAlbum
  date published: 2022-06-10
  track: En Tus Ojos De Cielo
    type: MusicRecording
    duration: PT2M16S
    duration ms: 136970
    explicit: false
    by artist: Varias Artistas
    in album: Platinum Collection: The World's Best Tangos, Vol. 14
      type: MusicAlbum
      date published: 2022-06-10
    genre: tango
    isrc code: QZK6N2294687
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-31T12:45:43+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x86e4c00b259f07111f64e99400bbb2df36ef32d1023f090a68e24b70b693f3d6
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 960403
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/960403
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6N2294687
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-31T13:04:34Z
    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 0x86e4c00b259f07111f64e99400bbb2df36ef32d1023f090a68e24b70b693f3d6. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZK6N2294687.
      date published: 2026-07-31T13:04:34Z
    audio: En Tus Ojos De Cielo
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 136.516
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.551
      additional property: Energy
        type: PropertyValue
        value: 0.307
      additional property: Speechiness
        type: PropertyValue
        value: 0.046
      additional property: Acousticness
        type: PropertyValue
        value: 0.879
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.09
      additional property: Liveness
        type: PropertyValue
        value: 0.077
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.631
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.7
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Platinum Collection: The World's Best Tangos, Vol. 15
  type: MusicAlbum
  date published: 2022-06-13
  track: Bez Śladu
    type: MusicRecording
    duration: PT2M49S
    duration ms: 169347
    explicit: false
    by artist: Varias Artistas
    in album: Platinum Collection: The World's Best Tangos, Vol. 15
      type: MusicAlbum
      date published: 2022-06-13
    genre: tango
    isrc code: QZK6M2276146
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-07T19:50:07+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x02c13d8896ddf048aa2950a4f8d39d15b410ba298ef1a085e9d435b88f6652d6
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957145
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957145
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6M2276146
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-08T08:56:20Z
    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 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 0x02c13d8896ddf048aa2950a4f8d39d15b410ba298ef1a085e9d435b88f6652d6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6M2276146.
      date published: 2026-07-08T08:56:20Z
    audio: Bez Śladu
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 118.277
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.383
      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: The Best of Tango

Energy
type: PropertyValue
value: 0.395

Speechiness
type: PropertyValue
value: 0.028

Acousticness
type: PropertyValue
value: 0.986

Instrumentalness
type: PropertyValue
value: 0.362

Liveness
type: PropertyValue
value: 0.359

Valence (Positivity)
type: PropertyValue
value: 0.305

Loudness (dB)
type: PropertyValue
value: -11.856

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Major

The Best of Tango
type: MusicAlbum
date published: 2022-06-13