Schlager 2017
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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: 2026-06-17T08:11:48Z
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album: Schlager Creme - Die besten Discofox Hits 2017 für deine Fox Party 2018
  type: MusicAlbum
  date published: 2017-06-30
  track: Herman's Hermits on 45: Something Is Happening / I'm into Something Good / No Milk Today / There's a Kind of Hush
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    in album: Schlager Creme - Die besten Discofox Hits 2017 für deine Fox Party 2018
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      date published: 2017-06-30
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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 0x573f9c8d534885025222ae5be50ff05b4467855419794de83e2d1714113382d4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEZ521602308.
      date published: 2026-07-02T03:55:08Z
    audio: Herman's Hermits on 45: Something Is Happening / I'm into Something Good / No Milk Today / There's a Kind of Hush
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album: Schlager Foxparade - Die besten Discofox Hits 2017 für deine Fox Party 2018
  type: MusicAlbum
  date published: 2017-06-30
album: Einfach Schlager - Die besten Discofox Hits 2017 für deine Fox Party 2018
  type: MusicAlbum
  date published: 2017-06-30
album: Schlager Fanbox - Die besten Discofox Hits 2017 für deine Fox Party 2018
  type: MusicAlbum
  date published: 2017-06-30