Bert Reisfeld
type: MusicGroup
description: Berthold Reisfeld (Vienna, 1906 - Badenweiler, 1991) was a lyricist, noted for adapting lyrics to well-known songs either to or from English. The songs he wrote English lyrics for include: "It's Oh
popularity: 2
followers: 1
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSTimestamp
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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 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 0xfb05edf14c29a2425c15b480b786a4b350727def77033ca023a68d56d0ad4404. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de923846-fc6a-4d52-b835-206c62945832.json and https://artists.proofprofile.net/proofs/artist/de923846-fc6a-4d52-b835-206c62945832.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xfb05edf14c29a2425c15b480b786a4b350727def77033ca023a68d56d0ad4404","name":"Bert Reisfeld","registered_at":"2026-06-21T05:41:16Z","symbol":"NIM1836882","token_address":"0x93d683fe982a51769bb39da2c8d483b6443314d9","type":"artist","uuid":"de923846-fc6a-4d52-b835-206c62945832"}
track: El Matador
  type: MusicRecording
  duration: PT2M38S
  duration ms: 158742
  explicit: false
  by artist: Austin Egen
  by artist: Bert Reisfeld
  in album: Vintage: The Age of Elegance
    type: MusicAlbum
    date published: 2016-10-07
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  additional property: OTSTimestamp
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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 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 0x0974b19f1ebb09d76a17a8aecdd6a1656a153469c67c15e242612be68040e7fa. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/QMGXA1418564.
    date published: 2026-07-22T18:47:29Z
  audio: El Matador
    type: AudioObject
    additional property: Tempo (BPM)
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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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