Donovan
type: MusicGroup
description: Donovan Phillips Leitch (born 10 May 1946) is a Scottish musician, songwriter and record producer. He emerged from the British folk scene in early 1965 and subsequently scored numerous international h
popularity: 13
followers: 57
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x226b14fe60ec6cb4fd5c4b5b61deabbe56db17adc6f367ca50b0dfa74ce237a9
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 953617
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953617
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1af00b89-5331-4acb-b1cd-d274b37cfadb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1af00b89-5331-4acb-b1cd-d274b37cfadb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1af00b89-5331-4acb-b1cd-d274b37cfadb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T09:00:45Z
additional property: OTSCanonicalRecord
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226b14fe60ec6cb4fd5c4b5b61deabbe56db17adc6f367ca50b0dfa74ce237a9. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1af00b89-5331-4acb-b1cd-d274b37cfadb.json and https://artists.proofprofile.net/proofs/artist/1af00b89-5331-4acb-b1cd-d274b37cfadb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T09:00:45Z
album: Lady of the Stars
  type: MusicAlbum
  date published: 1983
album: Superman
  type: MusicAlbum
  date published: 1983
  track: Sunshine Superman
    type: MusicRecording
    duration: PT4M6S
    duration ms: 246320
    explicit: false
    by artist: Donovan
    in album: Superman
      type: MusicAlbum
      date published: 1983
    isrc code: AUXN22478449
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T19:14:16+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf9440764b4b42717a3d4a15de5f7c2220e4f2d28e4e32e05eaa2b4394d6b5ea5
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958448
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958448
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUXN22478449
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T19:49:21Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9440764b4b42717a3d4a15de5f7c2220e4f2d28e4e32e05eaa2b4394d6b5ea5. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/AUXN22478449.
      date published: 2026-07-17T19:49:21Z
    audio: Sunshine Superman
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 124.534
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.711
      additional property: Energy
        type: PropertyValue
        value: 0.734
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.011
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.075
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.96
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.303
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Solid Gold Donovan
  type: MusicAlbum
  date published: 2020-11-15
  track: Sunshine Superman
    type: MusicRecording
    duration: PT4M33S
    duration ms: 273371
    explicit: false
    by artist: Donovan
    in album: Solid Gold Donovan
      type: MusicAlbum
      date published: 2020-11-15
    isrc code: AUXN22118308
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T05:01:29+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7c8b548c2250d42e43e33893fcfedd47a6e5ab38394ce663e25fab6427f27067
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956894
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956894
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUXN22118308
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T07:53:57Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8b548c2250d42e43e33893fcfedd47a6e5ab38394ce663e25fab6427f27067. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/AUXN22118308.
      date published: 2026-07-06T07:53:57Z
    audio: Sunshine Superman
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 132.308
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.654
      additional property: Energy
        type: PropertyValue
        value: 0.494
      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      additional property: Acousticness
        type: PropertyValue
        value: 0.353
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.167
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Valence (Positivity)
type: PropertyValue
value: 0.642

Loudness (dB)
type: PropertyValue
value: -12.941

Key Name
type: PropertyValue
value: C#

Mode Name
type: PropertyValue
value: Major