TSAR
type: MusicGroup
genre: power pop
description: thumb|Simeon I of Bulgaria, the first Bulgarian tsar and the first person who bore the title "tsar",Ivan Biliarsky, Word and Power in Mediaeval Bulgaria, East Central and Eastern Europe in the Middle
popularity: 17
followers: 1796
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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
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732b69fea25facf0af4a2761f4eabe3625071518124cd6346c99d416f18652f1. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5fa057b6-14a0-4280-a26e-eddd4ca8c87a.json and https://artists.proofprofile.net/proofs/artist/5fa057b6-14a0-4280-a26e-eddd4ca8c87a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T19:07:16Z
album: Tsar
  type: MusicAlbum
  date published: 2000-01-01
  track: Calling All Destroyers
    type: MusicRecording
    duration: PT3M22S
    duration ms: 202360
    explicit: false
    by artist: TSAR
    in album: Tsar
      type: MusicAlbum
      date published: 2000-01-01
    genre: power pop
    isrc code: USHR19922301
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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
      type: DigitalDocument
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e03dad560f105e783a7b17b13d6a1919d09d8833d24469fad3f4fef5222da9. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USHR19922301.
      date published: 2026-07-16T12:43:37Z
    audio: Calling All Destroyers
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 157.989
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
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      additional property: Energy
        type: PropertyValue
        value: 0.987
      additional property: Speechiness
        type: PropertyValue
        value: 0.081
      additional property: Acousticness
        type: PropertyValue
        value: 0.001
      additional property: Instrumentalness
        type: PropertyValue
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      additional property: Liveness
        type: PropertyValue
        value: 0.071
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.407
      additional property: Loudness (dB)
        type: PropertyValue
        value: -2.379
      additional property: Key Name
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        value: D
      additional property: Mode Name
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