The Head Cornerstone
type: MusicGroup
genre: reggae
genre: roots reggae
popularity: 13
followers: 326
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc30526c92967faaf4f99f71096565b229c5935ce8d17772610533a2d46e8a248
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953733
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953733
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/95f19344-9253-49b8-9082-8a1d82e9999c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/95f19344-9253-49b8-9082-8a1d82e9999c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/95f19344-9253-49b8-9082-8a1d82e9999c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T03:12:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc30526c92967faaf4f99f71096565b229c5935ce8d17772610533a2d46e8a248","name":"The Head Cornerstone","registered_at":"2026-06-14T20:19:38Z","symbol":"NIM0565383","token_address":"0x6acc5f24b057f7d2b60d37907d17684dcc5d7d0f","type":"artist","uuid":"95f19344-9253-49b8-9082-8a1d82e9999c"}
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 0xc30526c92967faaf4f99f71096565b229c5935ce8d17772610533a2d46e8a248. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95f19344-9253-49b8-9082-8a1d82e9999c.json and https://artists.proofprofile.net/proofs/artist/95f19344-9253-49b8-9082-8a1d82e9999c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:47:56Z
  text: {"copyright_id":"0xc30526c92967faaf4f99f71096565b229c5935ce8d17772610533a2d46e8a248","name":"The Head Cornerstone","registered_at":"2026-06-14T20:19:38Z","symbol":"NIM0565383","token_address":"0x6acc5f24b057f7d2b60d37907d17684dcc5d7d0f","type":"artist","uuid":"95f19344-9253-49b8-9082-8a1d82e9999c"}
album: The Head Cornerstone
  type: MusicAlbum
  date published: 2016-03-11
album: The Head Cornerstone
  type: MusicAlbum
  date published: 2016-03-11
  track: Run to the Hills
    type: MusicRecording
    duration: PT4M0S
    duration ms: 240986
    explicit: false
    by artist: The Head Cornerstone
    in album: The Head Cornerstone
      type: MusicAlbum
      date published: 2016-03-11
    genre: reggae
    genre: roots reggae
    isrc code: JMA271600442
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T09:05:17+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa7c559c34f596132c1b36e9a6a47aa2f0774eb50ec93ee63050a12010baf5b23
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958992
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958992
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JMA271600442
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T12:04:28Z
    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 0xa7c559c34f596132c1b36e9a6a47aa2f0774eb50ec93ee63050a12010baf5b23. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:04:28Z), 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/JMA271600442.
      date published: 2026-07-21T12:04:28Z
    audio: Run to the Hills
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 164.917
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.751
      additional property: Energy
        type: PropertyValue
        value: 0.602
      additional property: Speechiness
        type: PropertyValue
        value: 0.2
      additional property: Acousticness
        type: PropertyValue
        value: 0.023
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.134
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.723
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.145
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: Sweet Spot
    type: MusicRecording
    duration: PT3M54S
    duration ms: 234292
    explicit: false
    by artist: The Head Cornerstone
    in album: The Head Cornerstone
      type: MusicAlbum
      date published: 2016-03-11
    genre: reggae
    genre: roots reggae
    isrc code: JMA271600443
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T01:03:17+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa3f99420c0d197901a0f51e00edec283bbc4fd75e5ec7c57eab4e2990327643e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958224
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958224
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JMA271600443
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T02:28:43Z
    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 0xa3f99420c0d197901a0f51e00edec283bbc4fd75e5ec7c57eab4e2990327643e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JMA271600443.
      date published: 2026-07-16T02:28:43Z
    audio: Sweet Spot
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 150.067
      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: 0.908
      additional property: Energy
        type: PropertyValue
        value: 0.612
      additional property: Speechiness
        type: PropertyValue
        value: 0.139
      additional property: Acousticness
        type: PropertyValue
        value: 0.006
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Liveness
type: PropertyValue
value: 0.187

Valence (Positivity)
type: PropertyValue
value: 0.807

Loudness (dB)
type: PropertyValue
value: -7.294

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Major