David Feldman
type: MusicGroup
popularity: 2
followers: 17
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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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
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b9d77ae4bcfc226e86c91c88fc60193e2437f07f7106808e8ace40f2b06191. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fee743ce-40fc-4bbb-8f99-0368f91c65a5.json and https://artists.proofprofile.net/proofs/artist/fee743ce-40fc-4bbb-8f99-0368f91c65a5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T20:46:40Z
  text: {"copyright_id":"0xa1b9d77ae4bcfc226e86c91c88fc60193e2437f07f7106808e8ace40f2b06191","name":"David Feldman","registered_at":"2026-06-21T18:22:42Z","symbol":"NIM1998253","token_address":"0x657596491c40ab44ae61ad2fba3b897bcabdbb92","type":"artist","uuid":"fee743ce-40fc-4bbb-8f99-0368f91c65a5"}
track: Scherzi musicali: Damigella tutta bella, SV 235

Scherzi musicali: Damigella tutta bella, SV 235
type: MusicRecording
duration: PT2M55S
duration ms: 175000
explicit: false
by artist: Claudio Monteverdi
by artist: Magdalena Kožená
by artist: David Feldman
by artist: Luca Tittoto
by artist: La Cetra Barockorchester Basel
by artist: Andrea Marcon
in album: Work From Home With Monteverdi
  type: MusicAlbum
  date published: 2020-04-11
popularity: 10
genre: classical
genre: early-music
genre: baroque
genre: italian-baroque
genre: italian-renaissance
genre: madrigal
genre: renaissance
isrc code: DEN961404120
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
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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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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608c48a742637578a7a205303de8d5349bf141729857e176e9fe4919a1ba0eec. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEN961404120.
  date published: 2026-07-07T18:50:38Z
audio: Scherzi musicali: Damigella tutta bella, SV 235
  type: AudioObject
  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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    value: Bb
  additional property: Mode Name
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