Fereré trío
type: MusicGroup
popularity: 3
followers: 91
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4e9132e862361bd1c230b9f662f49980e132992723a46966d4adef48fe45f73c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d84169da-6ee5-4f7e-a6bf-1227f5ac069f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d84169da-6ee5-4f7e-a6bf-1227f5ac069f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d84169da-6ee5-4f7e-a6bf-1227f5ac069f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4e9132e862361bd1c230b9f662f49980e132992723a46966d4adef48fe45f73c","name":"Fereré trío","registered_at":"2026-06-21T03:51:03Z","symbol":"NIM1807225","token_address":"0x64b0129c47cfae56c867d68c9bd50191a6517154","type":"artist","uuid":"d84169da-6ee5-4f7e-a6bf-1227f5ac069f"}
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 0x4e9132e862361bd1c230b9f662f49980e132992723a46966d4adef48fe45f73c. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d84169da-6ee5-4f7e-a6bf-1227f5ac069f.json and https://artists.proofprofile.net/proofs/artist/d84169da-6ee5-4f7e-a6bf-1227f5ac069f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x4e9132e862361bd1c230b9f662f49980e132992723a46966d4adef48fe45f73c","name":"Fereré trío","registered_at":"2026-06-21T03:51:03Z","symbol":"NIM1807225","token_address":"0x64b0129c47cfae56c867d68c9bd50191a6517154","type":"artist","uuid":"d84169da-6ee5-4f7e-a6bf-1227f5ac069f"}
album: Colibrí
  type: MusicAlbum
  date published: 2023-06-30
album: Toco y Me Voy
  type: MusicAlbum
  date published: 2023-07-14
  track: Toco y Me Voy
    type: MusicRecording
    duration: PT4M5S
    duration ms: 245965
    explicit: false
    by artist: Fereré trío
    in album: Toco y Me Voy
      type: MusicAlbum
      date published: 2023-07-14
    isrc code: QZNJX2353132
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T07:02:25+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbd40a190ea41a70eab80746df575602959d07217b8c79a33c870e8bb181bc3d1
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956656
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956656
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2353132
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T14:03:39Z
    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 0xbd40a190ea41a70eab80746df575602959d07217b8c79a33c870e8bb181bc3d1. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNJX2353132.
      date published: 2026-07-04T14:03:39Z
    audio: Toco y Me Voy
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 88.079
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.626
      additional property: Energy
        type: PropertyValue
        value: 0.674
      additional property: Speechiness
        type: PropertyValue
        value: 0.049
      additional property: Acousticness
        type: PropertyValue
        value: 0.715
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.196
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.757
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.724
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Love of My Life
  type: MusicAlbum
  date published: 2023-07-28
album: Canción Final 2018
  type: MusicAlbum
  date published: 2023-08-25
album: Defensores de Causas Perdidas
  type: MusicAlbum
  date published: 2023-11-24
album: Quartirolo
  type: MusicAlbum
  date published: 2024-06-07
album: Tere!
  type: MusicAlbum
  date published: 2025-01-10