Errol Hayward
type: MusicGroup
genre: background-piano
popularity: 14
followers: 106
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbcbad3b099f2a9de3e4e3d44edc302e82e7084e6389b696ee5260df7468779e2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953812
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953812
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f4f66750-c29b-43dc-bb9e-0e8459ba03fb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f4f66750-c29b-43dc-bb9e-0e8459ba03fb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f4f66750-c29b-43dc-bb9e-0e8459ba03fb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T17:06:52Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbcbad3b099f2a9de3e4e3d44edc302e82e7084e6389b696ee5260df7468779e2","name":"Errol Hayward","registered_at":"2026-06-15T06:20:08Z","symbol":"NIM0708764","token_address":"0x945d73f43009b9ee090907daceb7e03c8b3858c9","type":"artist","uuid":"f4f66750-c29b-43dc-bb9e-0e8459ba03fb"}
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 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 0xbcbad3b099f2a9de3e4e3d44edc302e82e7084e6389b696ee5260df7468779e2. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4f66750-c29b-43dc-bb9e-0e8459ba03fb.json and https://artists.proofprofile.net/proofs/artist/f4f66750-c29b-43dc-bb9e-0e8459ba03fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T17:06:52Z
  text: {"copyright_id":"0xbcbad3b099f2a9de3e4e3d44edc302e82e7084e6389b696ee5260df7468779e2","name":"Errol Hayward","registered_at":"2026-06-15T06:20:08Z","symbol":"NIM0708764","token_address":"0x945d73f43009b9ee090907daceb7e03c8b3858c9","type":"artist","uuid":"f4f66750-c29b-43dc-bb9e-0e8459ba03fb"}
album: Heartbeat
  type: MusicAlbum
  date published: 2021-06-04
  track: Heartbeat
    type: MusicRecording
    duration: PT2M17S
    duration ms: 137000
    explicit: false
    by artist: Errol Hayward
    in album: Heartbeat
      type: MusicAlbum
      date published: 2021-06-04
    genre: background-piano
    isrc code: SE5IB2120296
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-08T07:12:25+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0821d0119386ccfdfe7c380557c87ce28230628f24076f06721517be9d37031b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 953520
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/953520
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5IB2120296
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T13:32:09Z
    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 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 0x0821d0119386ccfdfe7c380557c87ce28230628f24076f06721517be9d37031b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE5IB2120296.
      date published: 2026-06-13T13:32:09Z
    audio: Heartbeat
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 163.621
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.252
      additional property: Energy
        type: PropertyValue
        value: 0.017
      additional property: Speechiness
        type: PropertyValue
        value: 0.042
      additional property: Acousticness
        type: PropertyValue
        value: 0.988
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.913
      additional property: Liveness
        type: PropertyValue
        value: 0.116
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.318
      additional property: Loudness (dB)
        type: PropertyValue
        value: -29.795
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: I Know Him
  type: MusicAlbum
  date published: 2021-05-28
  track: I Know Him
    type: MusicRecording
    duration: PT2M37S
    duration ms: 157374
    explicit: false
    by artist: Errol Hayward
    in album: I Know Him
      type: MusicAlbum
      date published: 2021-05-28
    genre: background-piano
    isrc code: SE5IB2117308
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-10T22:17:29+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x28ec9db7167489c5cac37400bcf47cad0cfc3770916d9dac718952cd7bfbdc09
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 953520
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/953520
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5IB2117308
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T13:32:09Z
    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 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 0x28ec9db7167489c5cac37400bcf47cad0cfc3770916d9dac718952cd7bfbdc09. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE5IB2117308.
      date published: 2026-06-13T13:32:09Z
    audio: I Know Him
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 144.243
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.329
      additional property: Energy
        type: PropertyValue
        value: 0.028
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.978
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.788
      additional property: Liveness
        type: PropertyValue
        value: 0.106
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: The Grey Sky

Valence (Positivity)
type: PropertyValue
value: 0.078

Loudness (dB)
type: PropertyValue
value: -30.774

Key Name
type: PropertyValue
value: Ab

Mode Name
type: PropertyValue
value: Minor

The Grey Sky
type: MusicAlbum
date published: 2021-05-21