The Crooner Collective
type: MusicGroup
popularity: 14
followers: 297
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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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  date published: 2026-06-14T07:58:09Z
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album: Big Band, Rat Pack and Swing Christmas
  type: MusicAlbum
  date published: 2020-07-01
  track: Winter Wonderland
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    by artist: The Crooner Collective
    in album: Big Band, Rat Pack and Swing Christmas
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      date published: 2020-07-01
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    subject of: OpenTimestamps Proof of Existence
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee9c6de127fb54e549a6e0d5533d42525b67adc8c3873e137f2ed0b897cfcd1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBSMU8309038.
      date published: 2026-07-03T19:59:51Z
    audio: Winter Wonderland
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album: The Essential Collection of Popular Crooner Hits
  type: MusicAlbum
  date published: 2020-07-08
  track: Can't Take My Eyes Off Of You
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    by artist: The Crooner Collective
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      type: MusicAlbum
      date published: 2020-07-08
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-12T18:30:59Z
    audio: Can't Take My Eyes Off Of You
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album: Ultimate Hits of Big Band, Rat Pack and Swing
album: Relax and Unwind to These Smooth Crooner Classics

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Ultimate Hits of Big Band, Rat Pack and Swing
type: MusicAlbum
date published: 2020-07-08

Relax and Unwind to These Smooth Crooner Classics
type: MusicAlbum
date published: 2020-07-08
track: L. O. V. E. (Love)
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    date published: 2020-07-08
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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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    date published: 2026-07-17T11:10:25Z
  audio: L. O. V. E. (Love)
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