Carl Friedrich Zelter
type: MusicGroup
description: thumb|200px|right|Carl Friedrich ZelterPortrait by Carl Begas Carl Friedrich Zelter (11 December 1758 15 May 1832)Grove/Fuller-Datei:Carl-Friedrich-Zelter.jpegMaitland, 1910. The Zelter entry takes
popularity: 8
followers: 321
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094133b741bb3bdff08d7665b9109dc43f5fff303b613d3d21ac5406006b6638. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f458a734-7e83-4a45-a300-4be4c4242aa3.json and https://artists.proofprofile.net/proofs/artist/f458a734-7e83-4a45-a300-4be4c4242aa3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T15:47:51Z
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album: Zelter: Lieder
  type: MusicAlbum
  date published: 2016-01-01
album: Zelter: Lieder
  type: MusicAlbum
  date published: 2016-07-01
album: Zelter: 8 variazioni d'un rondo, Op. 2
  type: MusicAlbum
  date published: 2019-04-19
album: Zelter: 8 variazioni d'un rondo, Op. 2
  type: MusicAlbum
  date published: 2019-04-19
track: O gib, vom weichen Pfühle

O gib, vom weichen Pfühle
type: MusicRecording
duration: PT3M5S
duration ms: 185200
explicit: false
by artist: Carl Friedrich Zelter
by artist: Hans-Jörg Mammel
by artist: Michael Freimuth
in album: Wiegenlieder Vol. 2 (LIEDERPROJEKT)
  type: MusicAlbum
  date published: 2022-04-08
popularity: 3
isrc code: DEB111000810
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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 0x766203ab88c409bb67cc56be4ab87f13d6af0e20ec269525c7e99747beceeddd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEB111000810.
  date published: 2026-07-08T08:56:20Z
audio: O gib, vom weichen Pfühle
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  additional property: Loudness (dB)
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  additional property: Key Name
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    value: A
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