Change Of Heart
type: MusicGroup
popularity: 9
followers: 939
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf98c97ab6b307116aab52766553b742f0d38d4fa233d319d91165c2f429bcfad
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954032
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954032
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3a7a7be9-8530-428b-b32e-a3f325cb9dc9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3a7a7be9-8530-428b-b32e-a3f325cb9dc9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3a7a7be9-8530-428b-b32e-a3f325cb9dc9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T01:59:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf98c97ab6b307116aab52766553b742f0d38d4fa233d319d91165c2f429bcfad","name":"Change Of Heart","registered_at":"2026-06-16T09:57:22Z","symbol":"NIM1016034","token_address":"0x849cf1068e18ea42f9dbc293afd4b3e1975d8041","type":"artist","uuid":"3a7a7be9-8530-428b-b32e-a3f325cb9dc9"}
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 0xf98c97ab6b307116aab52766553b742f0d38d4fa233d319d91165c2f429bcfad. Chain 2 (Bitcoin): anchored in block 954032 (2026-06-17T01:59:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a7a7be9-8530-428b-b32e-a3f325cb9dc9.json and https://artists.proofprofile.net/proofs/artist/3a7a7be9-8530-428b-b32e-a3f325cb9dc9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T01:59:41Z
  text: {"copyright_id":"0xf98c97ab6b307116aab52766553b742f0d38d4fa233d319d91165c2f429bcfad","name":"Change Of Heart","registered_at":"2026-06-16T09:57:22Z","symbol":"NIM1016034","token_address":"0x849cf1068e18ea42f9dbc293afd4b3e1975d8041","type":"artist","uuid":"3a7a7be9-8530-428b-b32e-a3f325cb9dc9"}
album: There You Go '82-'97
  type: MusicAlbum
  date published: 2012-09-18
album: Last Tiger
  type: MusicAlbum
  date published: 2016-07-22
album: Change of Heart
  type: MusicAlbum
  date published: 2016-08-07
album: Continuum
  type: MusicAlbum
  date published: 2016-08-19
album: In The Wreckage short attention span edits (Short attention span Edit)
  type: MusicAlbum
  date published: 2025-01-31
album: In The Wreckage
  type: MusicAlbum
  date published: 2025-02-14
album: In The Wreckage
  type: MusicAlbum
  date published: 2025-03-07
  track: 20 Acres
    type: MusicRecording
    duration: PT3M47S
    duration ms: 227466
    explicit: false
    by artist: Change Of Heart
    in album: In The Wreckage
      type: MusicAlbum
      date published: 2025-03-07
    isrc code: QZDA62553968
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T23:45:12+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xfcde790a80e6f173b8cf688d9dbe486e4e4262506dd1a07cbf8c51379c9e0bf1
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956857
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956857
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62553968
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:26:17Z
    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 0xfcde790a80e6f173b8cf688d9dbe486e4e4262506dd1a07cbf8c51379c9e0bf1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZDA62553968.
      date published: 2026-07-06T01:26:17Z
    audio: 20 Acres
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 200.484
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.066
      additional property: Energy
        type: PropertyValue
        value: 0.726
      additional property: Speechiness
        type: PropertyValue
        value: 0.055
      additional property: Acousticness
        type: PropertyValue
        value: 0.022
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.08
      additional property: Liveness
        type: PropertyValue
        value: 0.434
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.422
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.308
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major