Dal McKennon
type: MusicGroup
popularity: 3
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe560b82025e28df05ae41223aecbfe1a6e3f2e1500b7fc2da49a105df8a510f6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953879
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953879
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/09436e84-6935-4fee-8c95-fb29e91a53bb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/09436e84-6935-4fee-8c95-fb29e91a53bb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/09436e84-6935-4fee-8c95-fb29e91a53bb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T02:57:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe560b82025e28df05ae41223aecbfe1a6e3f2e1500b7fc2da49a105df8a510f6","name":"Dal McKennon","registered_at":"2026-06-15T16:44:45Z","symbol":"NIM0769529","token_address":"0x9fdc463e47434d48e6c45530a686ceeced6cfacf","type":"artist","uuid":"09436e84-6935-4fee-8c95-fb29e91a53bb"}
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 0xe560b82025e28df05ae41223aecbfe1a6e3f2e1500b7fc2da49a105df8a510f6. Chain 2 (Bitcoin): anchored in block 953879 (2026-06-16T02:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09436e84-6935-4fee-8c95-fb29e91a53bb.json and https://artists.proofprofile.net/proofs/artist/09436e84-6935-4fee-8c95-fb29e91a53bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T02:57:35Z
  text: {"copyright_id":"0xe560b82025e28df05ae41223aecbfe1a6e3f2e1500b7fc2da49a105df8a510f6","name":"Dal McKennon","registered_at":"2026-06-15T16:44:45Z","symbol":"NIM0769529","token_address":"0x9fdc463e47434d48e6c45530a686ceeced6cfacf","type":"artist","uuid":"09436e84-6935-4fee-8c95-fb29e91a53bb"}
track: Jolly Holiday (Reprise) - From "Mary Poppins"/Soundtrack Version
  type: MusicRecording
  duration: PT1M10S
  duration ms: 70986
  explicit: false
  by artist: Julie Andrews
  by artist: Dick Van Dyke
  by artist: Daws Butler
  by artist: Peter Ellenshaw
  by artist: Dal McKennon
  by artist: David Tomlinson
  by artist: J. Pat O'Malley
  by artist: Richard M. Sherman
  in album: Mary Poppins 50th Anniversary Edition Soundtrack
    type: MusicAlbum
    date published: 2013-01-01
  popularity: 9
  isrc code: USWD10423998
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-25T18:06:39+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x505c0020061475d1857966cb0678d0ef2bdf00a3b30e62fe62c8e68ed95f6ea2
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD10423998
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  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 0x505c0020061475d1857966cb0678d0ef2bdf00a3b30e62fe62c8e68ed95f6ea2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USWD10423998.
    date published: 2026-07-08T03:20:19Z
  audio: Jolly Holiday (Reprise) - From "Mary Poppins"/Soundtrack Version
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 118.095
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.618
    additional property: Energy
      type: PropertyValue
      value: 0.332
    additional property: Speechiness
      type: PropertyValue
      value: 0.568
    additional property: Acousticness
      type: PropertyValue
      value: 0.68
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.49
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.778
    additional property: Loudness (dB)
      type: PropertyValue
      value: -20.71
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Jolly Holiday (Reprise) - From "Mary Poppins"/Soundtrack Version
  type: MusicRecording
  duration: PT1M10S
  duration ms: 70960
  explicit: false
  by artist: Julie Andrews
  by artist: Dick Van Dyke
  by artist: Daws Butler
  by artist: Peter Ellenshaw
  by artist: Dal McKennon
  by artist: David Tomlinson
  by artist: J. Pat O'Malley
  by artist: Richard M. Sherman
  in album: Walt Disney Records The Legacy Collection: Mary Poppins
    type: MusicAlbum
    date published: 2014-09-23
  isrc code: USWD10423998
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-25T18:06:39+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x505c0020061475d1857966cb0678d0ef2bdf00a3b30e62fe62c8e68ed95f6ea2
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956304
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USWD10423998
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  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 0x505c0020061475d1857966cb0678d0ef2bdf00a3b30e62fe62c8e68ed95f6ea2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USWD10423998.
    date published: 2026-07-02T03:55:08Z
  audio: Jolly Holiday (Reprise) - From "Mary Poppins"/Soundtrack Version
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 120.529
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.656
    additional property: Energy
      type: PropertyValue
      value: 0.337
    additional property: Speechiness
      type: PropertyValue
      value: 0.58
    additional property: Acousticness
    additional property: Instrumentalness
    additional property: Liveness
    additional property: Valence (Positivity)
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name

Acousticness
type: PropertyValue
value: 0.712

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.543

Valence (Positivity)
type: PropertyValue
value: 0.763

Loudness (dB)
type: PropertyValue
value: -20.69

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Minor