Cello
type: MusicGroup
genre: brazilian pop
description: The violoncello ( , ), commonly abbreviated as cello ( ), is a medium-low pitched bowed string instrument of the violin family. Its four strings are usually tuned in perfect fifths: from low to hig
popularity: 4
followers: 80
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
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  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a64855b1b890ea584dccc0f2fc50878c1e1750f6d33778b2d8b5a2bfaece28. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/71c40327-beb2-45e8-a246-d3669fe36543.json and https://artists.proofprofile.net/proofs/artist/71c40327-beb2-45e8-a246-d3669fe36543.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: Por um Triz
  type: MusicAlbum
  date published: 2023-03-24
album: De Ponta a Ponta
  type: MusicAlbum
  date published: 2023-05-19
  track: De Ponta a Ponta
    type: MusicRecording
    duration: PT3M7S
    duration ms: 187945
    explicit: false
    by artist: Cello
    in album: De Ponta a Ponta
      type: MusicAlbum
      date published: 2023-05-19
    genre: brazilian pop
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T21:10:13Z
    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 0x55aeb179e4ef2ba1e117f6e650abef60f7024f30647aa3570defbbd96eefda5f. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T21:10:13Z), 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/BX9HF2300031.
      date published: 2026-07-16T21:10:13Z
    audio: De Ponta a Ponta
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 91.993
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.662
      additional property: Energy
        type: PropertyValue
        value: 0.782
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.238
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.108
      additional property: Valence (Positivity)
        type: PropertyValue
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      additional property: Loudness (dB)
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        value: -7.375
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
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album: Boca Rosa
  type: MusicAlbum
  date published: 2023-06-23
album: Entregar Amor
  type: MusicAlbum
  date published: 2023-10-06
album: Singular
  type: MusicAlbum
  date published: 2024-01-25