Piano Bar
type: MusicGroup
description: A piano bar (also known as a piano lounge) consists of a piano or electronic keyboard played by a professional musician as a central part of an establishment that also serves alcoholic drinks. Piano b
popularity: 25
followers: 5943
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37286cd8348cdd038638502e25411d4939c14102838c281cf8c9a7e9e98221db. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb0e73a9-8512-4980-9b69-3d1645d944c3.json and https://artists.proofprofile.net/proofs/artist/bb0e73a9-8512-4980-9b69-3d1645d944c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
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album: 50 Piano Beautiful Songs for Deep Focus
  type: MusicAlbum
  date published: 2024-03-10
  track: Sprinkle of Serenity
    type: MusicRecording
    duration: PT1M48S
    duration ms: 108579
    explicit: false
    by artist: Instrumental Piano Universe
    by artist: Piano for Studying
    by artist: Piano Dreams
    in album: 50 Piano Beautiful Songs for Deep Focus
      type: MusicAlbum
      date published: 2024-03-10
    popularity: 1
    isrc code: UKZVC2200455
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    additional property: OTSTimestamp
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    additional property: OTSVerifyInstructions
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      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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f0eefba66b38dac9219474f9f237ea6e4554d231f4e542bfeaf50b8d3aa8db. 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/UKZVC2200455.
      date published: 2026-07-08T08:56:20Z
    audio: Sprinkle of Serenity
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 93.97
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.673
      additional property: Energy
        type: PropertyValue
        value: 0.083
      additional property: Speechiness
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      additional property: Acousticness
        type: PropertyValue
        value: 0.968
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.955
      additional property: Liveness
        type: PropertyValue
        value: 0.112
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.382
      additional property: Loudness (dB)
        type: PropertyValue
        value: -23.9
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
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        value: Major