Eduardo Var
type: MusicGroup
popularity: 5
followers: 67
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x65ec43cbc1b6ecc242ca629e7e289d9989fd2250950a4181646a570368028337
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954134
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954134
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7dfbfd57-b100-49c8-84a4-a19eb1651529.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7dfbfd57-b100-49c8-84a4-a19eb1651529.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7dfbfd57-b100-49c8-84a4-a19eb1651529
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:41:05Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x65ec43cbc1b6ecc242ca629e7e289d9989fd2250950a4181646a570368028337","name":"Eduardo Var","registered_at":"2026-06-17T09:34:23Z","symbol":"NIM1354072","token_address":"0x75f4733374f97dc22bd1c5741c1a217f34951ab6","type":"artist","uuid":"7dfbfd57-b100-49c8-84a4-a19eb1651529"}
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 0x65ec43cbc1b6ecc242ca629e7e289d9989fd2250950a4181646a570368028337. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7dfbfd57-b100-49c8-84a4-a19eb1651529.json and https://artists.proofprofile.net/proofs/artist/7dfbfd57-b100-49c8-84a4-a19eb1651529.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T19:41:05Z
  text: {"copyright_id":"0x65ec43cbc1b6ecc242ca629e7e289d9989fd2250950a4181646a570368028337","name":"Eduardo Var","registered_at":"2026-06-17T09:34:23Z","symbol":"NIM1354072","token_address":"0x75f4733374f97dc22bd1c5741c1a217f34951ab6","type":"artist","uuid":"7dfbfd57-b100-49c8-84a4-a19eb1651529"}
album: Love Collage
  type: MusicAlbum
  date published: 2017-11-06
album: El Arte del Amor
  type: MusicAlbum
  date published: 2020-04-27
album: Mi Mejor Lugar
  type: MusicAlbum
  date published: 2021-05-09
album: Cada Día
  type: MusicAlbum
  date published: 2021-11-09
album: Llevaste
  type: MusicAlbum
  date published: 2021-12-04
album: Fiesta en el Desierto
  type: MusicAlbum
  date published: 2021-12-20
album: Sin Temor
  type: MusicAlbum
  date published: 2022-03-25
album: Dando Vueltas
  type: MusicAlbum
  date published: 2022-08-21
album: Barco De Papel
  type: MusicAlbum
  date published: 2024-11-15
  track: Barco De Papel
    type: MusicRecording
    duration: PT3M31S
    duration ms: 211413
    explicit: false
    by artist: Eduardo Var
    in album: Barco De Papel
      type: MusicAlbum
      date published: 2024-11-15
    isrc code: QZXLZ2401010
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-13T00:04:50+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xab9774916120bf62092d636ad23f16c0a5ff51597f6246167bcc01e462a9ff8b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957779
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957779
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZXLZ2401010
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T00:19:08Z
    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 0xab9774916120bf62092d636ad23f16c0a5ff51597f6246167bcc01e462a9ff8b. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZXLZ2401010.
      date published: 2026-07-13T00:19:08Z
    audio: Barco De Papel
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 137.994
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.501
      additional property: Energy
        type: PropertyValue
        value: 0.906
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.022
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.25
      additional property: Liveness
        type: PropertyValue
        value: 0.092
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.167
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.454
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Angeles Cantando Estan
  type: MusicAlbum
  date published: 2024-12-15
album: Despacio
  type: MusicAlbum
  date published: 2025-08-11
  track: Despacio
    type: MusicRecording
    duration: PT3M8S
    duration ms: 188220
    explicit: false
    by artist: Eduardo Var
    in album: Despacio
      type: MusicAlbum
      date published: 2025-08-11
    isrc code: QZXLZ2535339
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T13:30:26+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x66585b46b564f6363e33997739ea398561929ddba26dac990af6be9282d79601
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958163
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958163
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZXLZ2535339
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T14:38:07Z
    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 0x66585b46b564f6363e33997739ea398561929ddba26dac990af6be9282d79601. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZXLZ2535339.
      date published: 2026-07-15T14:38:07Z
    audio: Despacio
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 89.994
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
      additional property: Time Signature
      additional property: Danceability
      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

Mode (Major/Minor)
type: PropertyValue
value: 1

Time Signature
type: PropertyValue
value: 4

Danceability
type: PropertyValue
value: 0.783

Energy
type: PropertyValue
value: 0.549

Speechiness
type: PropertyValue
value: 0.071

Acousticness
type: PropertyValue
value: 0.279

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.068

Valence (Positivity)
type: PropertyValue
value: 0.705

Loudness (dB)
type: PropertyValue
value: -7.311

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Major