La Mufa
type: MusicGroup
genre: tango
popularity: 5
followers: 765
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x63d89d7c7d6057c15da3f35c7c74be2f863f264dde3df4bcbaa08420383eadc6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954618
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954618
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c7ddb572-de4b-44a6-b090-ed29a8de5b98.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c7ddb572-de4b-44a6-b090-ed29a8de5b98.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c7ddb572-de4b-44a6-b090-ed29a8de5b98
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:05:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x63d89d7c7d6057c15da3f35c7c74be2f863f264dde3df4bcbaa08420383eadc6","name":"La Mufa","registered_at":"2026-06-20T22:08:04Z","symbol":"NIM1728743","token_address":"0x5a5001894dc953c98915288f734927b3c792ecaf","type":"artist","uuid":"c7ddb572-de4b-44a6-b090-ed29a8de5b98"}
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 0x63d89d7c7d6057c15da3f35c7c74be2f863f264dde3df4bcbaa08420383eadc6. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7ddb572-de4b-44a6-b090-ed29a8de5b98.json and https://artists.proofprofile.net/proofs/artist/c7ddb572-de4b-44a6-b090-ed29a8de5b98.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-20T23:05:13Z
  text: {"copyright_id":"0x63d89d7c7d6057c15da3f35c7c74be2f863f264dde3df4bcbaa08420383eadc6","name":"La Mufa","registered_at":"2026-06-20T22:08:04Z","symbol":"NIM1728743","token_address":"0x5a5001894dc953c98915288f734927b3c792ecaf","type":"artist","uuid":"c7ddb572-de4b-44a6-b090-ed29a8de5b98"}
album: Tango Instrumental en Vivo
  type: MusicAlbum
  date published: 2015-12-15
album: La Mufa Tango
  type: MusicAlbum
  date published: 2016-02-26
album: Don Pascual
  type: MusicAlbum
  date published: 2025-01-10
  track: Don Pascual
    type: MusicRecording
    duration: PT6M29S
    duration ms: 389033
    explicit: false
    by artist: La Mufa
    in album: Don Pascual
      type: MusicAlbum
      date published: 2025-01-10
    genre: tango
    isrc code: UYM122401439
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T08:45:27+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x42362a15d676a3257ad850d49fff6fcb7b5470ed5c4e5e5124f5171a248aa4af
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UYM122401439
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 0x42362a15d676a3257ad850d49fff6fcb7b5470ed5c4e5e5124f5171a248aa4af. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UYM122401439 — a six-check JSON result.
      date published: 2026-07-05T10:01:46Z
    audio: Don Pascual
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 117.872
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.193
      additional property: Energy
        type: PropertyValue
        value: 0.457
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.765
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.082
      additional property: Liveness
        type: PropertyValue
        value: 0.108
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.242
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.457
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Mar Adentro
  type: MusicAlbum
  date published: 2025-03-14