Ken Colyer's Jazzmen
type: MusicGroup
genre: ragtime
popularity: 16
followers: 1653
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf3e748238636b7f12d62cb6c4e668dff14059093401aad769df98f053f67d9e1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953657
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953657
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4b31893b-f6e6-4439-b1e5-542b8ffb8c7a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4b31893b-f6e6-4439-b1e5-542b8ffb8c7a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4b31893b-f6e6-4439-b1e5-542b8ffb8c7a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T16:43:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf3e748238636b7f12d62cb6c4e668dff14059093401aad769df98f053f67d9e1","name":"Ken Colyer's Jazzmen","registered_at":"2026-06-14T12:22:15Z","symbol":"NIM0451543","token_address":"0xab68971e56b49327a12f85961c068eae700842d0","type":"artist","uuid":"4b31893b-f6e6-4439-b1e5-542b8ffb8c7a"}
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 0xf3e748238636b7f12d62cb6c4e668dff14059093401aad769df98f053f67d9e1. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4b31893b-f6e6-4439-b1e5-542b8ffb8c7a.json and https://artists.proofprofile.net/proofs/artist/4b31893b-f6e6-4439-b1e5-542b8ffb8c7a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T16:43:25Z
  text: {"copyright_id":"0xf3e748238636b7f12d62cb6c4e668dff14059093401aad769df98f053f67d9e1","name":"Ken Colyer's Jazzmen","registered_at":"2026-06-14T12:22:15Z","symbol":"NIM0451543","token_address":"0xab68971e56b49327a12f85961c068eae700842d0","type":"artist","uuid":"4b31893b-f6e6-4439-b1e5-542b8ffb8c7a"}
album: New Orleans to London
  type: MusicAlbum
  date published: 1953
album: Ken Colyer's Jazzmen
  type: MusicAlbum
  date published: 1956
  track: Isle of Capri
    type: MusicRecording
    duration: PT2M52S
    duration ms: 172666
    explicit: false
    by artist: Ken Colyer's Jazzmen
    in album: Ken Colyer's Jazzmen
      type: MusicAlbum
      date published: 1956
    genre: ragtime
    isrc code: AUXN22341316
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T17:15:29+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xefff5b50602a1310c24b46bc0a18e94d81d7be3b71f2302590e9d917aed4ce55
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958316
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958316
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUXN22341316
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T19:42:29Z
    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 0xefff5b50602a1310c24b46bc0a18e94d81d7be3b71f2302590e9d917aed4ce55. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/AUXN22341316.
      date published: 2026-07-16T19:42:29Z
    audio: Isle of Capri
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 207.833
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.601
      additional property: Energy
        type: PropertyValue
        value: 0.693
      additional property: Speechiness
        type: PropertyValue
        value: 0.185
      additional property: Acousticness
        type: PropertyValue
        value: 0.551
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.047
      additional property: Liveness
        type: PropertyValue
        value: 0.144
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.959
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.08
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Club Session with Colyer
  type: MusicAlbum
  date published: 1957
album: Ken in Hamburg
  type: MusicAlbum
  date published: 1958
album: Up Jumped The Devil
  type: MusicAlbum
  date published: 1995
album: Ken Colyer's Jazzmen in Concert 1959
  type: MusicAlbum
  date published: 1996-01-01
album: Ken Colyer Very Very Live At The 100 Club
  type: MusicAlbum
  date published: 1997
album: Out Of Nowhere
  type: MusicAlbum
  date published: 1998-06-27
album: Out Of Nowhere
  type: MusicAlbum
  date published: 1998-06-27
album: The Classic Years
  type: MusicAlbum
  date published: 1999
album: A Boston Concert With Ken Colyer's Jazzmen
  type: MusicAlbum
  date published: 2000
album: Club Session With Colyer
  type: MusicAlbum
  date published: 2000-01-01
album: Tuxedo Rag
  type: MusicAlbum
  date published: 2000-01-01
album: They All Played Ragtime
  type: MusicAlbum
  date published: 2000-01-01
album: Ken Colyer's Skiffle Sessions
  type: MusicAlbum
  date published: 2000-01-01
album: Lonesome Road
  type: MusicAlbum
  date published: 2000-01-01
album: This Is Jazz
  type: MusicAlbum
  date published: 2000-01-01
album: Back To The Delta
  type: MusicAlbum
  date published: 2000-01-01
album: Historic Recordings - Vol 1
  type: MusicAlbum
  date published: 2000-01-01
album: New Orleans To London
  type: MusicAlbum
  date published: 2000-01-01
album: Live at the 51 Club 1960
  type: MusicAlbum
  date published: 2000-01-01
album: Serenading Auntie
  type: MusicAlbum
  date published: 2001
album: In The Sweet Bye And Bye
  type: MusicAlbum
  date published: 2001
album: Christmas With Colyer
  type: MusicAlbum
  date published: 2002
album: The Classic Years Volume 3
  type: MusicAlbum
  date published: 2003
album: Winter Wonderland
album: More Of The Lost 1954 Royal Festival Hall Tapes
album: New Orleans to London and Back to the Delta - Classic Recordings from 1953 / 54
album: Memories... A Jazz Club Session with Ken Colyer's Jazzmen: the Allan Gilmour Tapes
album: Memories... A Jazz Club Session with Ken Colyer's Jazzmen
album: Ken Colyer 1957-58 Lonesome Road
album: At the BBC 1955 - 1960
album: Jazz Masters
album: Live: Rediscovered Treasures from the Classic Years
album: Colyer's Pleasure
album: Watch That Dirty Tone of Yours...There Are Ladies Present !
album: Ragtime Revisited
album: Two Skiffle Experts
album: Ken Colyer's Jazzman Live at Manchester Free Trade Hall 1959
album: The Club Sessions Collection
album: Jazz Infusion - Ken Colyer
album: When I Leave The World Behind
album: Ken Colyer's Jazzmen in Dixieland

Winter Wonderland
type: MusicAlbum
date published: 2003

More Of The Lost 1954 Royal Festival Hall Tapes
type: MusicAlbum
date published: 2005

The Classic Years Volume 3
type: MusicAlbum
date published: 2005

New Orleans to London and Back to the Delta - Classic Recordings from 1953 / 54
type: MusicAlbum
date published: 2006
track: Harlem Rag
  type: MusicRecording
  duration: PT2M58S
  duration ms: 178280
  explicit: false
  by artist: Ken Colyer's Jazzmen
  in album: New Orleans to London and Back to the Delta - Classic Recordings from 1953 / 54
    type: MusicAlbum
    date published: 2006
  genre: ragtime
  isrc code: GBBAD0500016
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-20T09:43:18+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc675c9a00cf321e662eda2cbdcb1fea10bd07757573073ad8fde41fc3c98c433
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958861
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958861
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBAD0500016
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-20T10:02:52Z
  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 0xc675c9a00cf321e662eda2cbdcb1fea10bd07757573073ad8fde41fc3c98c433. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/GBBAD0500016.
    date published: 2026-07-20T10:02:52Z
  audio: Harlem Rag
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 89.899
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.738
    additional property: Energy
      type: PropertyValue
      value: 0.633
    additional property: Speechiness
      type: PropertyValue
      value: 0.051
    additional property: Acousticness
      type: PropertyValue
      value: 0.68
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.868
    additional property: Liveness
      type: PropertyValue
      value: 0.165
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.969
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.039
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Goin' Home
  type: MusicRecording
  duration: PT3M23S
  duration ms: 203946
  explicit: false
  by artist: Ken Colyer's Jazzmen
  in album: New Orleans to London and Back to the Delta - Classic Recordings from 1953 / 54
    type: MusicAlbum
    date published: 2006
  genre: ragtime
  isrc code: GBBAD0500018
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T08:12:19+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x78e1d621867c037408048fb8395f6ba7093264f768fca31d44bc1804b9324be6
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958126
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958126
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBAD0500018
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-15T11:08:19Z
  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 0x78e1d621867c037408048fb8395f6ba7093264f768fca31d44bc1804b9324be6. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:08:19Z), 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/GBBAD0500018.
    date published: 2026-07-15T11:08:19Z
  audio: Goin' Home
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 115.897
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.777
    additional property: Energy
      type: PropertyValue
      value: 0.252
    additional property: Speechiness
      type: PropertyValue
      value: 0.052
    additional property: Acousticness
      type: PropertyValue
      value: 0.798
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.112
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.897
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.908
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Cataract Rag
  type: MusicRecording
  duration: PT3M32S
  duration ms: 212053
  explicit: false
  by artist: Ken Colyer's Jazzmen
  in album: New Orleans to London and Back to the Delta - Classic Recordings from 1953 / 54
    type: MusicAlbum
    date published: 2006
  genre: ragtime
  isrc code: GBBAD0500020
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T11:19:50+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x70f2a4344fcfcaf8446d86db86cb47f40b91d67696511ecaab43e5e54fc579ce
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958152
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958152
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Cataract Rag
track: Sing On

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBAD0500020

OTSTimestamp
type: PropertyValue
value: 2026-07-15T14:21:40Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f2a4344fcfcaf8446d86db86cb47f40b91d67696511ecaab43e5e54fc579ce. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:21:40Z), 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/GBBAD0500020.
date published: 2026-07-15T14:21:40Z

Cataract Rag
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 88.077
additional property: Musical Key
  type: PropertyValue
  value: 0
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.678
additional property: Energy
  type: PropertyValue
  value: 0.513
additional property: Speechiness
  type: PropertyValue
  value: 0.048
additional property: Acousticness
  type: PropertyValue
  value: 0.84
additional property: Instrumentalness
  type: PropertyValue
  value: 0.907
additional property: Liveness
  type: PropertyValue
  value: 0.059
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.969
additional property: Loudness (dB)
  type: PropertyValue
  value: -10.978
additional property: Key Name
  type: PropertyValue
  value: C
additional property: Mode Name
  type: PropertyValue
  value: Minor

Sing On
type: MusicRecording
duration: PT3M6S
duration ms: 186293
explicit: false
by artist: Ken Colyer's Jazzmen
in album: New Orleans to London and Back to the Delta - Classic Recordings from 1953 / 54
  type: MusicAlbum
  date published: 2006
genre: ragtime
isrc code: GBBAD0500025
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T06:48:52+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdd2944b0c305f5ae02012c4edab0bf4b54503510bf47e931f628acf9a9c24387
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958690
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958690
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBAD0500025
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T07:14:39Z
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 0xdd2944b0c305f5ae02012c4edab0bf4b54503510bf47e931f628acf9a9c24387. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBBAD0500025.
  date published: 2026-07-19T07:14:39Z
audio: Sing On
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 212.676
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.503
  additional property: Energy
    type: PropertyValue
    value: 0.607
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.51
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.47
  additional property: Liveness
    type: PropertyValue
    value: 0.214
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.847
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.633
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Memories... A Jazz Club Session with Ken Colyer's Jazzmen: the Allan Gilmour Tapes
type: MusicAlbum
date published: 2007

Memories... A Jazz Club Session with Ken Colyer's Jazzmen
type: MusicAlbum
date published: 2007-11-19

Ken Colyer 1957-58 Lonesome Road
type: MusicAlbum
date published: 2009

Ken Colyer's Jazzmen
type: MusicAlbum
date published: 2011-04-18

New Orleans to London
type: MusicAlbum
date published: 2011-04-18

At the BBC 1955 - 1960
type: MusicAlbum
date published: 2011-10-01

The Classic Years
type: MusicAlbum
date published: 2012-04-16

Jazz Masters
type: MusicAlbum
date published: 2013
track: The Happy Wanderer
  type: MusicRecording
  duration: PT3M2S
  duration ms: 182726
  explicit: false
  by artist: Ken Colyer's Jazzmen
  in album: Jazz Masters
    type: MusicAlbum
    date published: 2013
  genre: ragtime
  isrc code: GB8XC1433515
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T05:52:30+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x9e2e34f89816daf1b72be5da12fc559b3f09a0a418a5ce6b9e9d6229b5826490
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956476
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956476
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB8XC1433515
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T09:04:44Z
  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 0x9e2e34f89816daf1b72be5da12fc559b3f09a0a418a5ce6b9e9d6229b5826490. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GB8XC1433515.
    date published: 2026-07-03T09:04:44Z
  audio: The Happy Wanderer
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 98.135
    additional property: Musical Key
      type: PropertyValue
      value: 3
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.509
    additional property: Energy
      type: PropertyValue
      value: 0.516
    additional property: Speechiness
      type: PropertyValue
      value: 0.038
    additional property: Acousticness
      type: PropertyValue
      value: 0.681
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.36
    additional property: Liveness
      type: PropertyValue
      value: 0.074
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.921
    additional property: Loudness (dB)
      type: PropertyValue
      value: -8.718
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Major

Live: Rediscovered Treasures from the Classic Years
type: MusicAlbum
date published: 2013-07-08

Colyer's Pleasure
type: MusicAlbum
date published: 2016-12-29

Watch That Dirty Tone of Yours...There Are Ladies Present !
type: MusicAlbum
date published: 2018-09-14

Ragtime Revisited
type: MusicAlbum
date published: 2018-09-14

Two Skiffle Experts
type: MusicAlbum
date published: 2019-11-04

Ken Colyer's Jazzman Live at Manchester Free Trade Hall 1959
type: MusicAlbum
date published: 2020-05-14

The Club Sessions Collection
type: MusicAlbum
date published: 2020-06-28

Jazz Infusion - Ken Colyer
type: MusicAlbum
date published: 2020-08-10

When I Leave The World Behind
type: MusicAlbum
date published: 2021-03-16

Ken Colyer's Jazzmen in Dixieland
type: MusicAlbum
date published: 2024-01-10