Jens Fuhr
type: MusicGroup
genre: classical
popularity: 7
followers: 13
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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 0xceeb64f3f7f175dd26543bc08f5c37ec8543cbebe226dd9b4f3763c21c6ba4a5. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8cf83d37-38f0-495e-8757-287bf5d72f5f.json and https://artists.proofprofile.net/proofs/artist/8cf83d37-38f0-495e-8757-287bf5d72f5f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
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album: Schubert For Meditation
  type: MusicAlbum
  date published: 2021-12-03
album: Nuits d'argent
  type: MusicAlbum
  date published: 2017-03-10
album: Philippe Racine Works
  type: MusicAlbum
  date published: 2011-07-05
album: Schubert: Lied Edition 9 - Friends, Vol. 1
  type: MusicAlbum
  date published: 2003-09-14
  track: An die Musik, Op. 88, No. 4, D. 547

An die Musik, Op. 88, No. 4, D. 547
type: MusicRecording
duration: PT2M56S
duration ms: 176840
explicit: false
by artist: Franz Schubert
by artist: Markus Eiche
by artist: Jens Fuhr
in album: Schubert: Lied Edition 9 - Friends, Vol. 1
  type: MusicAlbum
  date published: 2003-09-14
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: HKI190127514
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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
additional property: ProofProfileEvidenceStatus
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd495148654fa3699ffde53d713174d87fd3c554bad18573d034adef0e1423f3f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKI190127514.
  date published: 2026-06-13T13:32:09Z
audio: An die Musik, Op. 88, No. 4, D. 547
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