Masters Of Harmony
type: MusicGroup
description: Founded in 1985 with just a few dozen men, the Masters of Harmony is a 110-member men's chorus, based in Greater Los Angeles, California. Winner of eight consecutive gold medals (1990–2011) in interna
popularity: 5
followers: 702
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4a233d11f338e8a4de2ff772e85cb9e17c8d3f9aa56ac24f4c89ab59f67e2a24
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953909
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953909
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/02bfa317-1352-4672-898e-1de89511f011.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/02bfa317-1352-4672-898e-1de89511f011.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/02bfa317-1352-4672-898e-1de89511f011
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:53:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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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 0x4a233d11f338e8a4de2ff772e85cb9e17c8d3f9aa56ac24f4c89ab59f67e2a24. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/02bfa317-1352-4672-898e-1de89511f011.json and https://artists.proofprofile.net/proofs/artist/02bfa317-1352-4672-898e-1de89511f011.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0x4a233d11f338e8a4de2ff772e85cb9e17c8d3f9aa56ac24f4c89ab59f67e2a24","name":"Masters Of Harmony","registered_at":"2026-06-15T14:30:13Z","symbol":"NIM0737414","token_address":"0x6eeeb4d15678baa9d630686c2dfe895fd012ece0","type":"artist","uuid":"02bfa317-1352-4672-898e-1de89511f011"}
album: Showtime
  type: MusicAlbum
  date published: 1990
album: Masterpiece
  type: MusicAlbum
  date published: 1994
album: The Way We Were
  type: MusicAlbum
  date published: 2005-07-04
album: California Gold Rush
  type: MusicAlbum
  date published: 2008-04-29
album: Christmas Eve In Our Hometown
  type: MusicAlbum
  date published: 2008-04-29
  track: Christmas Eve In My Home Town
    type: MusicRecording
    duration: PT2M59S
    duration ms: 179160
    explicit: false
    by artist: Masters Of Harmony
    in album: Christmas Eve In Our Hometown
      type: MusicAlbum
      date published: 2008-04-29
    isrc code: US29H0810165
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
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    additional property: CopyrightChainExplorerURL
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    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US29H0810165
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T18:48:28Z
    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 0xd1dbb6a5215e10ccd91997f55411c7c92afed54b440dfdb1c5d7f1d878efb3b2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US29H0810165.
      date published: 2026-07-05T18:48:28Z
    audio: Christmas Eve In My Home Town
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 130.373
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 1
      additional property: Danceability
        type: PropertyValue
        value: 0.267
      additional property: Energy
        type: PropertyValue
        value: 0.146
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.992
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.086
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.058
      additional property: Loudness (dB)
        type: PropertyValue
        value: -17.811
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Caroling! Caroling!
  type: MusicAlbum
  date published: 2008-05-05
album: Portrait
  type: MusicAlbum
  date published: 2009-11-01
album: The Dream Is Carried On
  type: MusicAlbum
  date published: 2012-10-10