Henry Clay Work
type: MusicGroup
description: thumb||352x352px|alt=Photograph of WorkHenry Clay Work (October 1, 1832, Middletown – June 8, 1884, Hartford) was an American songwriter and composer. He is best remembered for his musical contributio
popularity: 4
followers: 130
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca5aea8e9c1c39e1cc5b8037a11d92fa5efaed6cfe2db6c28e0984a45cc6018. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea85fe3c-3a8c-42eb-8c5c-0d509373f620.json and https://artists.proofprofile.net/proofs/artist/ea85fe3c-3a8c-42eb-8c5c-0d509373f620.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
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album: Grandfather's Clock
  type: MusicAlbum
  date published: 2020-09-11
album: My Grandfather's Clock (古老的大钟 吉他音樂)
  type: MusicAlbum
  date published: 2020-10-08
album: Holland: The Ship That Never Returned
  type: MusicAlbum
  date published: 2025-09-12
  track: The Ship That Never Returned
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    duration: PT5M25S
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    by artist: Henry Clay Work
    in album: Holland: The Ship That Never Returned
      type: MusicAlbum
      date published: 2025-09-12
    isrc code: FR50X2416120
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    additional property: OTSTimestamp
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      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 0x573e54d256f8225e0c7c217b7a46ef993f7fb70132c5d726dce267a66c0d9f41. 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/FR50X2416120.
      date published: 2026-07-06T01:26:17Z
    audio: The Ship That Never Returned
      type: AudioObject
      additional property: Tempo (BPM)
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        type: PropertyValue
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      additional property: Danceability
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      additional property: Energy
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      additional property: Speechiness
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      additional property: Acousticness
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      additional property: Instrumentalness
        type: PropertyValue
        value: 0.258
      additional property: Liveness
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      additional property: Valence (Positivity)
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      additional property: Loudness (dB)
        type: PropertyValue
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      additional property: Key Name
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        value: Ab
      additional property: Mode Name
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track: Grandfather’s Clock
track: The Picture on the Wall

Grandfather’s Clock
type: MusicRecording
duration: PT3M8S
duration ms: 188875
explicit: false
by artist: Henry Clay Work
by artist: 자장가
in album: Lullaby Prenatal Education Classic Best In Mom’s Amniotic Fluid (Deep Sleep, Stability, Daycare Center Lullaby)
  type: MusicAlbum
  date published: 2018-08-30
isrc code: KRRAR1820585
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additional property: CopyrightStatus
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aea888a2bd925123d056768db4fe9c06f46e1581e703ede2e5f7eea52cb7215. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/KRRAR1820585.
  date published: 2026-07-13T07:54:01Z
audio: Grandfather’s Clock
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 143.267
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
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    value: 1
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    type: PropertyValue
    value: 6
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  additional property: Acousticness
    type: PropertyValue
    value: 0.964
  additional property: Instrumentalness
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.239
  additional property: Loudness (dB)
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    value: -24.119
  additional property: Key Name
    type: PropertyValue
    value: C
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The Picture on the Wall
type: MusicRecording
duration: PT3M1S
duration ms: 181573
explicit: false
by artist: Henry Clay Work
by artist: Anonymous 4
by artist: Bruce Molsky
in album: 1865: Songs of Hope and Home from the American Civil War
  type: MusicAlbum
  date published: 2015-01-26
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33be11f50db87a911c5bf70d9162cc1fd5323f28fbe5b36f8c765616c2ca0ea. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USHM11454916.
  date published: 2026-08-01T01:44:32Z
audio: The Picture on the Wall
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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    value: -22.06
  additional property: Key Name
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    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: USHM11454916
additional property: CopyrightID
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additional property: OTSHash
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-08-01T01:44:32+00:00
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