Cal Tjader Quartet
type: MusicGroup
genre: cool jazz
genre: exotica
genre: latin jazz
popularity: 7
followers: 859
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0ec40eea276f8c259b195274ce19ba47f9257cb82800e9f4b5f23873d3c78fa0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954502
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/954502
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9c294a76-7ea6-44bd-85df-67e38e521360.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9c294a76-7ea6-44bd-85df-67e38e521360.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9c294a76-7ea6-44bd-85df-67e38e521360
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T05:07:36Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0ec40eea276f8c259b195274ce19ba47f9257cb82800e9f4b5f23873d3c78fa0","name":"Cal Tjader Quartet","registered_at":"2026-06-20T03:59:12Z","symbol":"NIM1505423","token_address":"0xee3ec9a65ec87452c7e5ea9d8e338a7221679a13","type":"artist","uuid":"9c294a76-7ea6-44bd-85df-67e38e521360"}
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 → block must exist at that height 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 0x0ec40eea276f8c259b195274ce19ba47f9257cb82800e9f4b5f23873d3c78fa0. Chain 2 (Bitcoin): anchored in block 954502 (2026-06-20T05:07:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c294a76-7ea6-44bd-85df-67e38e521360.json and https://artists.proofprofile.net/proofs/artist/9c294a76-7ea6-44bd-85df-67e38e521360.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T05:07:36Z
  text: {"copyright_id":"0x0ec40eea276f8c259b195274ce19ba47f9257cb82800e9f4b5f23873d3c78fa0","name":"Cal Tjader Quartet","registered_at":"2026-06-20T03:59:12Z","symbol":"NIM1505423","token_address":"0xee3ec9a65ec87452c7e5ea9d8e338a7221679a13","type":"artist","uuid":"9c294a76-7ea6-44bd-85df-67e38e521360"}
album: Suite for San Francisco
  type: MusicAlbum
  date published: 2021-07-09
  track: Coit Tower
    type: MusicRecording
    duration: PT1M37S
    duration ms: 97880
    explicit: false
    by artist: Cal Tjader Quartet
    by artist: Cal Tjader
    in album: Suite for San Francisco
      type: MusicAlbum
      date published: 2021-07-09
    isrc code: NLHR52105558
  track: Raccoon Straits
    type: MusicRecording
    duration: PT2M28S
    duration ms: 148226
    explicit: false
    by artist: Cal Tjader Quartet
    by artist: Cal Tjader
    in album: Suite for San Francisco
      type: MusicAlbum
      date published: 2021-07-09
    isrc code: NLHR52105559
  track: Running Out
    type: MusicRecording
    duration: PT3M24S
    duration ms: 204880
    explicit: false
    by artist: Cal Tjader Quartet
    by artist: Cal Tjader
    in album: Suite for San Francisco
      type: MusicAlbum
      date published: 2021-07-09
    isrc code: NLHR52105560
  track: Skyline Waltz
    type: MusicRecording
    duration: PT3M46S
    duration ms: 226360
    explicit: false
    by artist: Cal Tjader Quartet
    by artist: Cal Tjader
    in album: Suite for San Francisco
      type: MusicAlbum
      date published: 2021-07-09
    isrc code: NLHR52105561
  track: Viva Cepeda
    type: MusicRecording
    duration: PT3M43S
    duration ms: 223520
    explicit: false
    by artist: Cal Tjader Quartet
    by artist: Cal Tjader
    in album: Suite for San Francisco
      type: MusicAlbum
      date published: 2021-07-09
    isrc code: NLHR52105562
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-07T02:27:31+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2b50d992109ba09ff8e9104e91080abbbf9ccc1d9c7a80fb77b616642c91a540
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957120
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block/957120
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLHR52105562
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-08T03:22:41Z
    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 → block OTSBitcoinBlock must exist at that height 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 0x2b50d992109ba09ff8e9104e91080abbbf9ccc1d9c7a80fb77b616642c91a540. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLHR52105562.
      date published: 2026-07-08T03:22:41Z
  track: The Last Luff
    type: MusicRecording
    duration: PT3M40S
    duration ms: 220960
    explicit: false
    by artist: Cal Tjader Quartet
    by artist: Cal Tjader
    in album: Suite for San Francisco
      type: MusicAlbum
      date published: 2021-07-09
    isrc code: NLHR52105563
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-07T06:17:47+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x07aff0e30074e6afb0e03d8a25367e65e42e88d9ea7fba379b2ddc5cb4e29840
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957145
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block/957145
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLHR52105563
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-08T08:56:20Z
    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 → block OTSBitcoinBlock must exist at that height 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 0x07aff0e30074e6afb0e03d8a25367e65e42e88d9ea7fba379b2ddc5cb4e29840. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLHR52105563.
      date published: 2026-07-08T08:56:20Z
  track: Sigmund Stern Groove
    type: MusicRecording
    duration: PT4M40S
    duration ms: 280360
    explicit: false
    by artist: Cal Tjader Quartet
    by artist: Cal Tjader
    in album: Suite for San Francisco
      type: MusicAlbum
      date published: 2021-07-09
    isrc code: NLHR52105564
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-26T22:21:58+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8cc34338a293a78e93f7a7720af4df57943bcefead17835d51500d3cb198b566
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956312
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block/956312
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLHR52105564
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
  track: Union Square
  track: Triple T Blues
  track: Grant Avenue Suite
album: Jazz at the Blackhawk
album: Jazz At The Blackhawk (Live)
album: Cal Tjader Quartet
album: The Vinyl Masters: Jazz At The Blackhawk
track: Skyline Waltz
track: Sigmund Stern Groove
track: Union Square
track: It Never Entered My Mind
track: Coit Tower
track: Raccoon Straits
track: Running Out
track: Viva Cepeda
track: The Last Luff
track: Grant Avenue Suite
track: Triple T Blues
track: Bill B. - Live
track: Land's End - Live
track: I'll Remember April - Live
track: Blues In The Night - Live
track: Thinking Of You, MJQ - Live
track: I've Never Been In Love Before - Live
track: Two For Blues Suite - Live
track: When The Sun Comes Out - Live
track: Lover, Come Back To Me - Live

OTSTimestamp
type: PropertyValue
value: 2026-07-02T05:09:12Z

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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc34338a293a78e93f7a7720af4df57943bcefead17835d51500d3cb198b566. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLHR52105564.
date published: 2026-07-02T05:09:12Z

Union Square
type: MusicRecording
duration: PT4M23S
duration ms: 263453
explicit: false
by artist: Cal Tjader Quartet
by artist: Cal Tjader
in album: Suite for San Francisco
  type: MusicAlbum
  date published: 2021-07-09
isrc code: NLHR52105565

Triple T Blues
type: MusicRecording
duration: PT6M2S
duration ms: 362440
explicit: false
by artist: Cal Tjader Quartet
by artist: Cal Tjader
in album: Suite for San Francisco
  type: MusicAlbum
  date published: 2021-07-09
isrc code: NLHR52105566
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T06:30:59+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x66b2e6f0d69dc25eb5fb3f10f6294a523373756d2d291caa14489e4a170a8b58
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLHR52105566
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
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 → block OTSBitcoinBlock must exist at that height 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 0x66b2e6f0d69dc25eb5fb3f10f6294a523373756d2d291caa14489e4a170a8b58. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLHR52105566.
  date published: 2026-07-08T03:22:41Z

Grant Avenue Suite
type: MusicRecording
duration: PT7M30S
duration ms: 450360
explicit: false
by artist: Cal Tjader Quartet
by artist: Cal Tjader
in album: Suite for San Francisco
  type: MusicAlbum
  date published: 2021-07-09
isrc code: NLHR52105567
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T04:38:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe4719d48d57ecde4a609a7d596524422ce161d574663b7cb013a9712a7fb3dff
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLHR52105567
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
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 → block OTSBitcoinBlock must exist at that height 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 0xe4719d48d57ecde4a609a7d596524422ce161d574663b7cb013a9712a7fb3dff. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLHR52105567.
  date published: 2026-07-08T03:22:41Z

Jazz at the Blackhawk
type: MusicAlbum
date published: 1957-02-17
track: Bill B.
  type: MusicRecording
  duration: PT6M56S
  duration ms: 416133
  explicit: false
  by artist: Cal Tjader Quarter
  in album: Jazz at the Blackhawk
    type: MusicAlbum
    date published: 1957-02-17
track: Land's End
  type: MusicRecording
  duration: PT4M6S
  duration ms: 246466
  explicit: false
  by artist: Cal Tjader Quarter
  in album: Jazz at the Blackhawk
    type: MusicAlbum
    date published: 1957-02-17
track: I'll Remember April
  type: MusicRecording
  duration: PT6M15S
  duration ms: 375040
  explicit: false
  by artist: Cal Tjader Quarter
  in album: Jazz at the Blackhawk
    type: MusicAlbum
    date published: 1957-02-17
track: Blues in the Night
  type: MusicRecording
  duration: PT4M42S
  duration ms: 282666
  explicit: false
  by artist: Cal Tjader Quarter
  in album: Jazz at the Blackhawk
    type: MusicAlbum
    date published: 1957-02-17
track: Thinking of You, Mjq
  type: MusicRecording
  duration: PT3M43S
  duration ms: 223666
  explicit: false
  by artist: Cal Tjader Quarter
  in album: Jazz at the Blackhawk
    type: MusicAlbum
    date published: 1957-02-17
track: I've Never Been in Love Before
  type: MusicRecording
  duration: PT3M39S
  duration ms: 219266
  explicit: false
  by artist: Cal Tjader Quarter
  in album: Jazz at the Blackhawk
    type: MusicAlbum
    date published: 1957-02-17
track: Two for Blues Suite
  type: MusicRecording
  duration: PT5M15S
  duration ms: 315560
  explicit: false
  by artist: Cal Tjader Quarter
  in album: Jazz at the Blackhawk
    type: MusicAlbum
    date published: 1957-02-17
track: When the Sun Comes Out
  type: MusicRecording
  duration: PT4M55S
  duration ms: 295640
  explicit: false
  by artist: Cal Tjader Quarter
  in album: Jazz at the Blackhawk
    type: MusicAlbum
    date published: 1957-02-17
track: Lover, Come Back to Me
  type: MusicRecording
  duration: PT4M29S
  duration ms: 269133
  explicit: false
  by artist: Cal Tjader Quarter
  in album: Jazz at the Blackhawk
    type: MusicAlbum
    date published: 1957-02-17

Jazz At The Blackhawk (Live)
type: MusicAlbum
date published: 1957-01-01
track: Bill B. - Live
  type: MusicRecording
  duration: PT6M51S
  duration ms: 411800
  explicit: false
  by artist: Cal Tjader Quartet
  in album: Jazz At The Blackhawk (Live)
    type: MusicAlbum
    date published: 1957-01-01
  isrc code: USFI85700806
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T21:21:48+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x941f68e6afc8266e4001d736e61d7658bf2d718d8b6d9569c0b3c8c488b98ea9
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957120
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/957120
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI85700806
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:22:41Z
  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 → block OTSBitcoinBlock must exist at that height 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 0x941f68e6afc8266e4001d736e61d7658bf2d718d8b6d9569c0b3c8c488b98ea9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USFI85700806.
    date published: 2026-07-08T03:22:41Z
track: Land's End - Live
  type: MusicRecording
  duration: PT4M4S
  duration ms: 244266
  explicit: false
  by artist: Cal Tjader Quartet
  in album: Jazz At The Blackhawk (Live)
    type: MusicAlbum
    date published: 1957-01-01
track: I'll Remember April - Live
  type: MusicRecording
  duration: PT6M11S
  duration ms: 371840
  explicit: false
  by artist: Cal Tjader Quartet
  in album: Jazz At The Blackhawk (Live)
    type: MusicAlbum
    date published: 1957-01-01
track: Blues In The Night - Live
  type: MusicRecording
  duration: PT4M40S
  duration ms: 280800
  explicit: false
  by artist: Cal Tjader Quartet
  in album: Jazz At The Blackhawk (Live)
    type: MusicAlbum
    date published: 1957-01-01
track: Thinking Of You, MJQ - Live
  type: MusicRecording
  duration: PT3M40S
  duration ms: 220893
  explicit: false
  by artist: Cal Tjader Quartet
  in album: Jazz At The Blackhawk (Live)
    type: MusicAlbum
    date published: 1957-01-01
track: I've Never Been In Love Before - Live
  type: MusicRecording
  duration: PT3M36S
  duration ms: 216533
  explicit: false
  by artist: Cal Tjader Quartet
  in album: Jazz At The Blackhawk (Live)
    type: MusicAlbum
    date published: 1957-01-01
track: Two For Blues Suite - Live
  type: MusicRecording
  duration: PT5M12S
  duration ms: 312733
  explicit: false
  by artist: Cal Tjader Quartet
  in album: Jazz At The Blackhawk (Live)
    type: MusicAlbum
    date published: 1957-01-01
track: When The Sun Comes Out - Live
  type: MusicRecording
  duration: PT4M53S
  duration ms: 293240
  explicit: false
  by artist: Cal Tjader Quartet
  in album: Jazz At The Blackhawk (Live)
    type: MusicAlbum
    date published: 1957-01-01
track: Lover, Come Back To Me - Live
  type: MusicRecording
  duration: PT4M29S
  duration ms: 269133
  explicit: false
  by artist: Cal Tjader Quartet
  in album: Jazz At The Blackhawk (Live)
    type: MusicAlbum
    date published: 1957-01-01

Cal Tjader Quartet
type: MusicAlbum
date published: 1956-05-24
track: Battle Hymn Of The Republic
  type: MusicRecording
  duration: PT3M21S
  duration ms: 201360
  explicit: false
  by artist: Cal Tjader Quartet
  in album: Cal Tjader Quartet
    type: MusicAlbum
    date published: 1956-05-24
  isrc code: USFI85600605
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T06:29:19+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc4584fd6799887c6c835cabbc323710c4084b8a3dabcda5abb4740f9293d2750
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957145
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/957145
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI85600605
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T08:56:20Z
  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 → block OTSBitcoinBlock must exist at that height 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 0xc4584fd6799887c6c835cabbc323710c4084b8a3dabcda5abb4740f9293d2750. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USFI85600605.
    date published: 2026-07-08T08:56:20Z
track: It Never Entered My Mind
  type: MusicRecording
  duration: PT3M41S
  duration ms: 221466
  explicit: false
  by artist: Cal Tjader Quartet
  in album: Cal Tjader Quartet
    type: MusicAlbum
    date published: 1956-05-24
  isrc code: USFI85600606
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T04:45:34+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xb7dac5068a1b89346ce25dae1606bccc96d674eeec71b5fe221e3d8cf63de897
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI85600606
  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 → block OTSBitcoinBlock must exist at that height 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 0xb7dac5068a1b89346ce25dae1606bccc96d674eeec71b5fe221e3d8cf63de897. 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/USFI85600606.
    date published: 2026-07-08T03:20:19Z
track: A Light Groove
  type: MusicRecording
  duration: PT5M15S
  duration ms: 315840
  explicit: false
  by artist: Cal Tjader Quartet
  in album: Cal Tjader Quartet
    type: MusicAlbum
    date published: 1956-05-24
  isrc code: USFI85600607
track: The Night We Called It A Day
  type: MusicRecording
  duration: PT3M10S
  duration ms: 190160
  explicit: false
  by artist: Cal Tjader Quartet
  in album: Cal Tjader Quartet
    type: MusicAlbum
    date published: 1956-05-24
  isrc code: USFI85600608
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T16:34:37+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x30b1b39de6dcb36cca359103f2ff06a4d9cf7a306eceb795990f65212b5bca25
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957145
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/957145
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI85600608
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T08:56:20Z
  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 → block OTSBitcoinBlock must exist at that height 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 0x30b1b39de6dcb36cca359103f2ff06a4d9cf7a306eceb795990f65212b5bca25. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USFI85600608.
    date published: 2026-07-08T08:56:20Z
track: Fancy Bea
  type: MusicRecording
  duration: PT3M44S
  duration ms: 224893
  explicit: false
  by artist: Cal Tjader Quartet
  in album: Cal Tjader Quartet
    type: MusicAlbum
    date published: 1956-05-24
  isrc code: USFI85600609
track: A Fifth For Frank
  type: MusicRecording
  duration: PT4M53S
  duration ms: 293840
  explicit: false
  by artist: Cal Tjader Quartet
  in album: Cal Tjader Quartet
    type: MusicAlbum
    date published: 1956-05-24
  isrc code: USFI85600610
track: For All We Know
  type: MusicRecording
  duration: PT4M47S
  duration ms: 287666
  explicit: false
  by artist: Cal Tjader Quartet
  in album: Cal Tjader Quartet
    type: MusicAlbum
    date published: 1956-05-24
  isrc code: USFI85600611
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T10:42:57+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x85614d5a52f8e3a5032d944344415e2cfac40becf6f3efb1ba538dc8c4012e92
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI85600611
  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 → block OTSBitcoinBlock must exist at that height 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 0x85614d5a52f8e3a5032d944344415e2cfac40becf6f3efb1ba538dc8c4012e92. 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/USFI85600611.
    date published: 2026-07-08T03:20:19Z
track: Miss Wiggins
  type: MusicRecording
  duration: PT6M1S
  duration ms: 361373
  explicit: false
  by artist: Cal Tjader Quartet
  in album: Cal Tjader Quartet
  isrc code: USFI85600612
  additional property: CopyrightID
  additional property: CopyrightStatus
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
track: Our Love Is Here To Stay

Cal Tjader Quartet
type: MusicGroup

Cal Tjader Quartet
type: MusicAlbum
date published: 1956-05-24

CopyrightID
type: PropertyValue

CopyrightStatus
type: PropertyValue
value: registered

CopyrightRegisteredAt
type: PropertyValue
value: 2026-07-07T06:37:08+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0xb2ffe2169013b724b9794513fb92c972b461e2d5a274b7368b2313bde69fccda

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 957118

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block/957118

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI85600612

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:20:19Z

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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ffe2169013b724b9794513fb92c972b461e2d5a274b7368b2313bde69fccda. 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/USFI85600612.
date published: 2026-07-08T03:20:19Z

Our Love Is Here To Stay
type: MusicRecording
duration: PT5M26S
duration ms: 326760
explicit: false
by artist: Cal Tjader Quartet
in album: Cal Tjader Quartet
  type: MusicAlbum
  date published: 1956-05-24
isrc code: USFI85600613

The Vinyl Masters: Jazz At The Blackhawk
type: MusicAlbum
date published: 2016-09-02
track: Bill B.
  type: MusicRecording
  duration: PT6M56S
  duration ms: 416133
  explicit: false
  by artist: Cal Tjader Quartet
  in album: The Vinyl Masters: Jazz At The Blackhawk
    type: MusicAlbum
    date published: 2016-09-02
track: Land's End
  type: MusicRecording
  duration: PT4M6S
  duration ms: 246466
  explicit: false
  by artist: Cal Tjader Quartet
  in album: The Vinyl Masters: Jazz At The Blackhawk
    type: MusicAlbum
    date published: 2016-09-02
track: I'll Remember April
  type: MusicRecording
  duration: PT6M15S
  duration ms: 375026
  explicit: false
  by artist: Cal Tjader Quartet
  in album: The Vinyl Masters: Jazz At The Blackhawk
    type: MusicAlbum
    date published: 2016-09-02
track: Blues In The Night
  type: MusicRecording
  duration: PT4M42S
  duration ms: 282666
  explicit: false
  by artist: Cal Tjader Quartet
  in album: The Vinyl Masters: Jazz At The Blackhawk
    type: MusicAlbum
    date published: 2016-09-02
track: Thinking Of You, Mjq
  type: MusicRecording
  duration: PT3M43S
  duration ms: 223666
  explicit: false
  by artist: Cal Tjader Quartet
  in album: The Vinyl Masters: Jazz At The Blackhawk
    type: MusicAlbum
    date published: 2016-09-02
track: I've Never Been In Love Before
  type: MusicRecording
  duration: PT3M39S
  duration ms: 219266
  explicit: false
  by artist: Cal Tjader Quartet
  in album: The Vinyl Masters: Jazz At The Blackhawk
    type: MusicAlbum
    date published: 2016-09-02
track: Two For Blues Suite
  type: MusicRecording
  duration: PT5M15S
  duration ms: 315573
  explicit: false
  by artist: Cal Tjader Quartet
  in album: The Vinyl Masters: Jazz At The Blackhawk
    type: MusicAlbum
    date published: 2016-09-02
track: When The Sun Comes Out
  type: MusicRecording
  duration: PT4M55S
  duration ms: 295626
  explicit: false
  by artist: Cal Tjader Quartet
  in album: The Vinyl Masters: Jazz At The Blackhawk
    type: MusicAlbum
    date published: 2016-09-02
track: Lover, Come Back To Me
  type: MusicRecording
  duration: PT4M29S
  duration ms: 269133
  explicit: false
  by artist: Cal Tjader Quartet
  in album: The Vinyl Masters: Jazz At The Blackhawk
    type: MusicAlbum
    date published: 2016-09-02

Skyline Waltz
type: MusicRecording
duration: PT3M46S
duration ms: 226360
explicit: false
by artist: Cal Tjader Quartet
by artist: Cal Tjader
in album: Suite for San Francisco
  type: MusicAlbum
  date published: 2021-07-09
isrc code: NLHR52105561

Sigmund Stern Groove
type: MusicRecording
duration: PT4M40S
duration ms: 280360
explicit: false
by artist: Cal Tjader Quartet
by artist: Cal Tjader
in album: Suite for San Francisco
  type: MusicAlbum
  date published: 2021-07-09
isrc code: NLHR52105564
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-26T22:21:58+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8cc34338a293a78e93f7a7720af4df57943bcefead17835d51500d3cb198b566
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956312
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLHR52105564
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
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 → block OTSBitcoinBlock must exist at that height 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 0x8cc34338a293a78e93f7a7720af4df57943bcefead17835d51500d3cb198b566. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLHR52105564.
  date published: 2026-07-02T05:09:12Z

Union Square
type: MusicRecording
duration: PT4M23S
duration ms: 263453
explicit: false
by artist: Cal Tjader Quartet
by artist: Cal Tjader
in album: Suite for San Francisco
  type: MusicAlbum
  date published: 2021-07-09
isrc code: NLHR52105565

It Never Entered My Mind
type: MusicRecording
duration: PT3M41S
duration ms: 221466
explicit: false
by artist: Cal Tjader Quartet
in album: Cal Tjader Quartet
  type: MusicAlbum
  date published: 1956-05-24
isrc code: USFI85600606
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T04:45:34+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb7dac5068a1b89346ce25dae1606bccc96d674eeec71b5fe221e3d8cf63de897
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI85600606
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 → block OTSBitcoinBlock must exist at that height 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 0xb7dac5068a1b89346ce25dae1606bccc96d674eeec71b5fe221e3d8cf63de897. 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/USFI85600606.
  date published: 2026-07-08T03:20:19Z

Coit Tower
type: MusicRecording
duration: PT1M37S
duration ms: 97880
explicit: false
by artist: Cal Tjader Quartet
by artist: Cal Tjader
in album: Suite for San Francisco
  type: MusicAlbum
  date published: 2021-07-09
isrc code: NLHR52105558

Raccoon Straits
type: MusicRecording
duration: PT2M28S
duration ms: 148226
explicit: false
by artist: Cal Tjader Quartet
by artist: Cal Tjader
in album: Suite for San Francisco
  type: MusicAlbum
  date published: 2021-07-09
isrc code: NLHR52105559

Running Out
type: MusicRecording
duration: PT3M24S
duration ms: 204880
explicit: false
by artist: Cal Tjader Quartet
by artist: Cal Tjader
in album: Suite for San Francisco
  type: MusicAlbum
  date published: 2021-07-09
isrc code: NLHR52105560

Viva Cepeda
type: MusicRecording
duration: PT3M43S
duration ms: 223520
explicit: false
by artist: Cal Tjader Quartet
by artist: Cal Tjader
in album: Suite for San Francisco
  type: MusicAlbum
  date published: 2021-07-09
isrc code: NLHR52105562
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T02:27:31+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2b50d992109ba09ff8e9104e91080abbbf9ccc1d9c7a80fb77b616642c91a540
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLHR52105562
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
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 → block OTSBitcoinBlock must exist at that height 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 0x2b50d992109ba09ff8e9104e91080abbbf9ccc1d9c7a80fb77b616642c91a540. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLHR52105562.
  date published: 2026-07-08T03:22:41Z

The Last Luff
type: MusicRecording
duration: PT3M40S
duration ms: 220960
explicit: false
by artist: Cal Tjader Quartet
by artist: Cal Tjader
in album: Suite for San Francisco
  type: MusicAlbum
  date published: 2021-07-09
isrc code: NLHR52105563
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T06:17:47+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x07aff0e30074e6afb0e03d8a25367e65e42e88d9ea7fba379b2ddc5cb4e29840
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957145
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLHR52105563
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
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 → block OTSBitcoinBlock must exist at that height 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
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  date published: 2026-07-08T08:56:20Z

Grant Avenue Suite
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duration: PT7M30S
duration ms: 450360
explicit: false
by artist: Cal Tjader Quartet
by artist: Cal Tjader
in album: Suite for San Francisco
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  date published: 2021-07-09
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additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z

Triple T Blues
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duration ms: 362440
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by artist: Cal Tjader
in album: Suite for San Francisco
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  date published: 2021-07-09
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additional property: CopyrightStatus
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b2e6f0d69dc25eb5fb3f10f6294a523373756d2d291caa14489e4a170a8b58. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLHR52105566.
  date published: 2026-07-08T03:22:41Z

Bill B. - Live
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duration: PT6M51S
duration ms: 411800
explicit: false
by artist: Cal Tjader Quartet
in album: Jazz At The Blackhawk (Live)
  type: MusicAlbum
  date published: 1957-01-01
isrc code: USFI85700806
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additional property: CopyrightStatus
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  value: registered
additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI85700806
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
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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 0x941f68e6afc8266e4001d736e61d7658bf2d718d8b6d9569c0b3c8c488b98ea9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USFI85700806.
  date published: 2026-07-08T03:22:41Z

Land's End - Live
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duration: PT4M4S
duration ms: 244266
explicit: false
by artist: Cal Tjader Quartet
in album: Jazz At The Blackhawk (Live)
  type: MusicAlbum
  date published: 1957-01-01

I'll Remember April - Live
type: MusicRecording
duration: PT6M11S
duration ms: 371840
explicit: false
by artist: Cal Tjader Quartet
in album: Jazz At The Blackhawk (Live)
  type: MusicAlbum
  date published: 1957-01-01

Blues In The Night - Live
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duration: PT4M40S
duration ms: 280800
explicit: false
by artist: Cal Tjader Quartet
in album: Jazz At The Blackhawk (Live)
  type: MusicAlbum
  date published: 1957-01-01

Thinking Of You, MJQ - Live
type: MusicRecording
duration: PT3M40S
duration ms: 220893
explicit: false
by artist: Cal Tjader Quartet
in album: Jazz At The Blackhawk (Live)
  type: MusicAlbum
  date published: 1957-01-01

I've Never Been In Love Before - Live
type: MusicRecording
duration: PT3M36S
duration ms: 216533
explicit: false
by artist: Cal Tjader Quartet
in album: Jazz At The Blackhawk (Live)
  type: MusicAlbum
  date published: 1957-01-01

Two For Blues Suite - Live
type: MusicRecording
duration: PT5M12S
duration ms: 312733
explicit: false
by artist: Cal Tjader Quartet
in album: Jazz At The Blackhawk (Live)
  type: MusicAlbum
  date published: 1957-01-01

When The Sun Comes Out - Live
type: MusicRecording
duration: PT4M53S
duration ms: 293240
explicit: false
by artist: Cal Tjader Quartet
in album: Jazz At The Blackhawk (Live)
  type: MusicAlbum
  date published: 1957-01-01

Lover, Come Back To Me - Live
type: MusicRecording
duration: PT4M29S
duration ms: 269133
explicit: false
by artist: Cal Tjader Quartet
in album: Jazz At The Blackhawk (Live)
  type: MusicAlbum
  date published: 1957-01-01