Friederike Ernst
type: MusicGroup
popularity: 9
followers: 4
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd8914af848f437995670738d1843388372b422e5db9cbbff148b8e63fe1fc00b
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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  value: https://blockstream.info/api/block-height/954513
additional property: OTSProofURL
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9ed7c54c-e1fa-4131-891d-c17e4af2db67
additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8914af848f437995670738d1843388372b422e5db9cbbff148b8e63fe1fc00b. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ed7c54c-e1fa-4131-891d-c17e4af2db67.json and https://artists.proofprofile.net/proofs/artist/9ed7c54c-e1fa-4131-891d-c17e4af2db67.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-20T06:31:18Z
  text: {"copyright_id":"0xd8914af848f437995670738d1843388372b422e5db9cbbff148b8e63fe1fc00b","name":"Friederike Ernst","registered_at":"2026-06-20T04:55:38Z","symbol":"NIM1518790","token_address":"0x45de902138e3bba96023d48aa5862d678d7cbb76","type":"artist","uuid":"9ed7c54c-e1fa-4131-891d-c17e4af2db67"}
track: Concerto for 3 Harpsichords, Strings, and Continuo No. 1 in D minor, BWV 1063: 1. (Allegro)
  type: MusicRecording
  duration: PT5M1S
  duration ms: 301880
  explicit: false
  by artist: Johann Sebastian Bach
  by artist: Ton Koopman
  by artist: Tini Mathot
  by artist: Friederike Ernst
  by artist: Amsterdam Baroque Orchestra
  in album: J.S. Bach: Orgel- und Cembalowerke, Kammermusik, Motetten
    type: MusicAlbum
    date published: 2017-03-17
  genre: classical
  genre: classical-piano
  genre: early-music
  genre: baroque
  genre: chamber-music
  genre: concerto
  isrc code: NLA508108804
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    value: https://blockstream.info/api/block-height/960183
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508108804
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T01:10:20Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cb61b33fdd8d9ae4adb40f063620c1bd8f2ee6dbe823d3ce435b8fb07dc06c. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508108804 — a six-check JSON result.
    date published: 2026-07-30T01:10:20Z
  audio: Concerto for 3 Harpsichords, Strings, and Continuo No. 1 in D minor, BWV 1063: 1. (Allegro)
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    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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    additional property: Mode Name
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