DuBose Heyward
type: MusicGroup
genre: musicals
description: Edwin DuBose Heyward (August 31, 1885 – June 16, 1940) was an American author best known for his 1925 novel Porgy. He and his wife Dorothy, a playwright, adapted it as a 1927 play of the same name. Th
popularity: 17
followers: 198
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additional property: CopyrightChainExplorerURL
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additional property: OTSVerifyInstructions
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  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
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  date published: 2026-06-14T13:10:39Z
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track: Summertime
track: Porgy and Bess, Act I: Summertime
track: Blame It On My Youth (Arr. for Vibraphone & Piano) - Live
track: Summertime - Arr. by Christian-Pierre La Marca & Baptiste Trotignon

Summertime
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duration: PT3M17S
duration ms: 197920
explicit: false
by artist: George Gershwin
by artist: Ira Gershwin
by artist: DuBose Heyward
by artist: Miles Davis
in album: The Greatest Jazz-Hits
  type: MusicAlbum
  date published: 2013-09-27
popularity: 0
isrc code: USSM15800043
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  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: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b09884a883583d71ef17b7ed674ded6aed1bb5142b9581a87b7de2fd4628400. 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/USSM15800043.
  date published: 2026-07-02T03:55:08Z
audio: Summertime
  type: AudioObject
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  additional property: Time Signature
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  additional property: Danceability
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  additional property: Speechiness
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  additional property: Instrumentalness
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  additional property: Loudness (dB)
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    value: F
  additional property: Mode Name
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Porgy and Bess, Act I: Summertime
type: MusicRecording
duration: PT2M51S
duration ms: 171200
explicit: false
by artist: George Gershwin
by artist: Ira Gershwin
by artist: DuBose Heyward
by artist: Shu-Cheen Yu
by artist: Antony Walker
by artist: Sinfonia Australis
in album: Lotus Moon - Chinese Folk and Art Songs, Opera Arias
  type: MusicAlbum
  date published: 2001-01-01
isrc code: AUAB00150035
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  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
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9b345acef911caccd98d5f03aea234bb75378520197d0f7751f0a9a2fb5ed8. 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/AUAB00150035.
  date published: 2026-07-08T03:20:19Z
audio: Porgy and Bess, Act I: Summertime
  type: AudioObject
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  additional property: Danceability
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Blame It On My Youth (Arr. for Vibraphone & Piano) - Live
type: MusicRecording
duration: PT7M21S
duration ms: 441840
explicit: false
by artist: Oscar Levant
by artist: DuBose Heyward
by artist: Kirill Gerstein
by artist: Gary Burton
in album: The Gershwin Moment (Live)
  type: MusicAlbum
  date published: 2018-02-16
isrc code: DELN21702004
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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: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3091d725cfd34ea2ce11f04ddcd119bd951e038626508a0df5ac8279b7b6c2e2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DELN21702004.
  date published: 2026-06-13T17:25:41Z
audio: Blame It On My Youth (Arr. for Vibraphone & Piano) - Live
  type: AudioObject
  additional property: Tempo (BPM)
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Summertime
type: MusicRecording
duration: PT2M30S
duration ms: 150560
explicit: false
by artist: George Gershwin
by artist: DuBose Heyward
by artist: Dorothy Heyward
by artist: Ira Gershwin
by artist: Anne Brown
by artist: Alexander Smallens
in album: Broadway: The American Musical
  type: MusicAlbum
  date published: 2004-10-19
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3de4db40c15defc08de530a14bdeae6ceba228a5c36e0f235895c76a38a2294. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USUMC0500063.
  date published: 2026-07-31T22:27:44Z
audio: Summertime
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Key Name
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isrc code: USUMC0500063
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  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

Summertime - Arr. by Christian-Pierre La Marca & Baptiste Trotignon
type: MusicRecording
duration: PT4M11S
duration ms: 251240
explicit: false
by artist: George Gershwin
by artist: Ira Gershwin
by artist: DuBose Heyward
by artist: Dorothy Heyward
by artist: Christian-Pierre La Marca
by artist: Baptiste Trotignon
in album: Summertime (Arr. by Christian-Pierre La Marca & Baptiste Trotignon)
  type: MusicAlbum
  date published: 2021-08-27
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81699b5c044143c92190c5a1fca3fbd2e7fb6ed372040f8e35ccc8cabb83e9e9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRZ132111070.
  date published: 2026-07-29T19:35:34Z
audio: Summertime - Arr. by Christian-Pierre La Marca & Baptiste Trotignon
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  additional property: Acousticness
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  additional property: Key Name
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additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
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additional property: OTSHash
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additional property: OTSBitcoinBlockVerifyURL
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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 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