大友康平
type: MusicGroup
genre: enka
genre: j-pop
genre: kayokyoku
popularity: 36
followers: 11638
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2b8d028fc805a5a945d29f1ba9e2a99bbd4320b42772bd056b4cd150880420bd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9ef7b830-19e3-4b28-8a68-37bf737312d0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9ef7b830-19e3-4b28-8a68-37bf737312d0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9ef7b830-19e3-4b28-8a68-37bf737312d0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2b8d028fc805a5a945d29f1ba9e2a99bbd4320b42772bd056b4cd150880420bd","name":"大友康平","registered_at":"2026-06-12T05:44:39Z","symbol":"NIM0204418","token_address":"0x25327f5c8cf786f6a4ab428fff0019317707e9e2","type":"artist","uuid":"9ef7b830-19e3-4b28-8a68-37bf737312d0"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8d028fc805a5a945d29f1ba9e2a99bbd4320b42772bd056b4cd150880420bd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ef7b830-19e3-4b28-8a68-37bf737312d0.json and https://artists.proofprofile.net/proofs/artist/9ef7b830-19e3-4b28-8a68-37bf737312d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
  text: {"copyright_id":"0x2b8d028fc805a5a945d29f1ba9e2a99bbd4320b42772bd056b4cd150880420bd","name":"大友康平","registered_at":"2026-06-12T05:44:39Z","symbol":"NIM0204418","token_address":"0x25327f5c8cf786f6a4ab428fff0019317707e9e2","type":"artist","uuid":"9ef7b830-19e3-4b28-8a68-37bf737312d0"}
album: WILD SOUL
  type: MusicAlbum
  date published: 2008
album: RISE
  type: MusicAlbum
  date published: 2008-03-26
album: J-STANDARD 70's
  type: MusicAlbum
  date published: 2008-05-28
  track: ﾗｳﾞ･ｲｽﾞ･ｵｰｳﾞｧｰ
    type: MusicRecording
    duration: PT4M25S
    duration ms: 265040
    explicit: false
    by artist: 大友康平
    in album: J-STANDARD 70's
      type: MusicAlbum
      date published: 2008-05-28
    genre: enka
    genre: j-pop
    genre: kayokyoku
    isrc code: JPS100800024
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T01:52:06+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9692938fdb6c8418c775c02995ac6a3f2363bed4e61bca3f31398a503501f28f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958805
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958805
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPS100800024
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T04:54:59Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9692938fdb6c8418c775c02995ac6a3f2363bed4e61bca3f31398a503501f28f. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:54:59Z), 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/JPS100800024.
      date published: 2026-07-20T04:54:59Z
    audio: ﾗｳﾞ･ｲｽﾞ･ｵｰｳﾞｧｰ
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 141.999
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.666
      additional property: Energy
        type: PropertyValue
        value: 0.407
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.756
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.114
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.359
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.902
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: 落陽
    type: MusicRecording
    duration: PT4M7S
    duration ms: 247253
    explicit: false
    by artist: 大友康平
    in album: J-STANDARD 70's
      type: MusicAlbum
      date published: 2008-05-28
    genre: enka
    genre: j-pop
    genre: kayokyoku
    isrc code: JPS100800025
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T12:07:04+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa184655a77cfc2bd727c704a228adcb836ff99c1c391468c580aefa6200917fc
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958286
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958286
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPS100800025
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T12:43:37Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa184655a77cfc2bd727c704a228adcb836ff99c1c391468c580aefa6200917fc. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPS100800025.
      date published: 2026-07-16T12:43:37Z
    audio: 落陽
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 170.011
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.586
      additional property: Energy
        type: PropertyValue
        value: 0.822
      additional property: Speechiness
        type: PropertyValue
        value: 0.042
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: あの鐘を鳴らすのはあなた
  track: たどりついたらいつも雨ふり
  track: 遠くで汽笛を聞きながら
album: HOUND DOG ULTIMATE BEST
album: ﾊｶﾞﾈのように 花のように
album: コラボ×3
album: J-STANDARD BALLADS
album: So Long

Acousticness
type: PropertyValue
value: 0.215

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.143

Valence (Positivity)
type: PropertyValue
value: 0.821

Loudness (dB)
type: PropertyValue
value: -6.623

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Minor

あの鐘を鳴らすのはあなた
type: MusicRecording
duration: PT4M20S
duration ms: 260333
explicit: false
by artist: 大友康平
in album: J-STANDARD 70's
  type: MusicAlbum
  date published: 2008-05-28
genre: enka
genre: j-pop
genre: kayokyoku
isrc code: JPS100800030
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-04T08:38:29+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5bcfbbf522676bbf608c898a7f219a4d708a7cf47323be89577a500334b74303
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956639
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956639
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPS100800030
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-04T11:19:20Z
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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcfbbf522676bbf608c898a7f219a4d708a7cf47323be89577a500334b74303. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPS100800030.
  date published: 2026-07-04T11:19:20Z
audio: あの鐘を鳴らすのはあなた
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 101.958
  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: 0.643
  additional property: Energy
    type: PropertyValue
    value: 0.565
  additional property: Speechiness
    type: PropertyValue
    value: 0.024
  additional property: Acousticness
    type: PropertyValue
    value: 0.043
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.069
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.644
  additional property: Loudness (dB)
    type: PropertyValue
    value: -9.252
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

たどりついたらいつも雨ふり
type: MusicRecording
duration: PT3M29S
duration ms: 209306
explicit: false
by artist: 大友康平
in album: J-STANDARD 70's
  type: MusicAlbum
  date published: 2008-05-28
genre: enka
genre: j-pop
genre: kayokyoku
isrc code: JPS100800031
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-15T00:40:47+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc5717182996c2a59c15ce9db4bad803c72d055e4340619bc3339d71ff8a62bd7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958095
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958095
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPS100800031
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-15T04:30:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5717182996c2a59c15ce9db4bad803c72d055e4340619bc3339d71ff8a62bd7. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/JPS100800031.
  date published: 2026-07-15T04:30:08Z
audio: たどりついたらいつも雨ふり
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 139.952
  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: 0.654
  additional property: Energy
    type: PropertyValue
    value: 0.758
  additional property: Speechiness
    type: PropertyValue
    value: 0.027
  additional property: Acousticness
    type: PropertyValue
    value: 0.002
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.161
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.811
  additional property: Loudness (dB)
    type: PropertyValue
    value: -6.946
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

遠くで汽笛を聞きながら
type: MusicRecording
duration: PT4M10S
duration ms: 250826
explicit: false
by artist: 大友康平
in album: J-STANDARD 70's
  type: MusicAlbum
  date published: 2008-05-28
genre: enka
genre: j-pop
genre: kayokyoku
isrc code: JPS100800033
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-17T06:19:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3bfd41f576f0c301f816821134c918be814a6c6e8cd750147bcdbe161ad4ed44
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958376
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958376
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPS100800033
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-17T06:41:00Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfd41f576f0c301f816821134c918be814a6c6e8cd750147bcdbe161ad4ed44. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/JPS100800033.
  date published: 2026-07-17T06:41:00Z
audio: 遠くで汽笛を聞きながら
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 141.972
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.575
  additional property: Energy
    type: PropertyValue
    value: 0.61
  additional property: Speechiness
    type: PropertyValue
    value: 0.025
  additional property: Acousticness
    type: PropertyValue
    value: 0.006
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.103
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.413
  additional property: Loudness (dB)
    type: PropertyValue
    value: -8.012
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Major

HOUND DOG ULTIMATE BEST
type: MusicAlbum
date published: 2009-05-20

ﾊｶﾞﾈのように 花のように
type: MusicAlbum
date published: 2011
track: ﾊｶﾞﾈのように 花のように
  type: MusicRecording
  duration: PT3M49S
  duration ms: 229975
  explicit: false
  by artist: 大友康平
  in album: ﾊｶﾞﾈのように 花のように
    type: MusicAlbum
    date published: 2011
  genre: enka
  genre: j-pop
  genre: kayokyoku
  isrc code: JPH801100015
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T06:26:16+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x74abacbbfc85332289bc7ca5e03754125f416cc83afd3c0e16e6c1a6bf65b0f1
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956772
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956772
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPH801100015
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T10:01:46Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74abacbbfc85332289bc7ca5e03754125f416cc83afd3c0e16e6c1a6bf65b0f1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPH801100015.
    date published: 2026-07-05T10:01:46Z
  audio: ﾊｶﾞﾈのように 花のように
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 136.482
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.422
    additional property: Energy
      type: PropertyValue
      value: 0.294
    additional property: Speechiness
      type: PropertyValue
      value: 0.035
    additional property: Acousticness
      type: PropertyValue
      value: 0.885
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.115
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.283
    additional property: Loudness (dB)
      type: PropertyValue
      value: -8.617
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major

コラボ×3
type: MusicAlbum
date published: 2011-04-06
track: My Precious - feat. Cheryl Lynn
  type: MusicRecording
  duration: PT5M6S
  duration ms: 306493
  explicit: false
  by artist: 大友康平
  in album: コラボ×3
    type: MusicAlbum
    date published: 2011-04-06
  genre: enka
  genre: j-pop
  genre: kayokyoku
  isrc code: JPH801100005
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T09:31:30+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x9c704b5551f77c780dbeca3bf97a10ba25f132f491c46118c59809303a5aaa12
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957820
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957820
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPH801100005
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-13T07:54:01Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c704b5551f77c780dbeca3bf97a10ba25f132f491c46118c59809303a5aaa12. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPH801100005.
    date published: 2026-07-13T07:54:01Z
  audio: My Precious - feat. Cheryl Lynn
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 92.04
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.534
    additional property: Energy
      type: PropertyValue
      value: 0.841
    additional property: Speechiness
      type: PropertyValue
      value: 0.04
    additional property: Acousticness
      type: PropertyValue
      value: 0.146
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.106
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.749
    additional property: Loudness (dB)
      type: PropertyValue
      value: -4.953
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: True Love Song - feat. 世良公則
  type: MusicRecording
  duration: PT4M42S
  duration ms: 282093
  explicit: false
  by artist: 大友康平
  in album: コラボ×3
    type: MusicAlbum
    date published: 2011-04-06
  genre: enka
  genre: j-pop
  genre: kayokyoku
  isrc code: JPH801100007
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T18:55:04+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x387e9911f563f98b0b43ddf794f59b63c710d61a9192aed36452017f45950996
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958771
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958771
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPH801100007
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T21:57:06Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387e9911f563f98b0b43ddf794f59b63c710d61a9192aed36452017f45950996. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:57:06Z), 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/JPH801100007.
    date published: 2026-07-19T21:57:06Z
  audio: True Love Song - feat. 世良公則
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 73.007
    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: 0.482
    additional property: Energy
      type: PropertyValue
      value: 0.629
    additional property: Speechiness
      type: PropertyValue
      value: 0.03
    additional property: Acousticness
      type: PropertyValue
      value: 0.628
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.082
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.271
    additional property: Loudness (dB)
      type: PropertyValue
      value: -6.574
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major

J-STANDARD BALLADS
type: MusicAlbum
date published: 2012-11-07
track: 雪の華
  type: MusicRecording
  duration: PT5M7S
  duration ms: 307106
  explicit: false
  by artist: 大友康平
  in album: J-STANDARD BALLADS
    type: MusicAlbum
    date published: 2012-11-07
  genre: enka
  genre: j-pop
  genre: kayokyoku
  isrc code: JPH801200042
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T00:20:44+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x9a028a222eea87c2ce7eb1e43ea9aab6e52c065e296e0d1ef341ed7bf7380687
  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/JPH801200042
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a028a222eea87c2ce7eb1e43ea9aab6e52c065e296e0d1ef341ed7bf7380687. 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/JPH801200042.
    date published: 2026-07-19T07:14:39Z
  audio: 雪の華
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 145.989
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.598
    additional property: Energy
      type: PropertyValue
      value: 0.533
    additional property: Speechiness
      type: PropertyValue
      value: 0.025
    additional property: Acousticness
      type: PropertyValue
      value: 0.37
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.28
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.369
    additional property: Loudness (dB)
      type: PropertyValue
      value: -8.616
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: 涙そうそう
  type: MusicRecording
  duration: PT4M9S
  duration ms: 249186
  explicit: false
  by artist: 大友康平
  in album: J-STANDARD BALLADS
    type: MusicAlbum
    date published: 2012-11-07
  genre: enka
  genre: j-pop
  genre: kayokyoku
  isrc code: JPH801200046
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-21T00:34:43+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xafb65ced6b1ef8b46575c0191eb69986b2d67ff4b4399eaae40eeb7e3ec95ec6
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958947
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958947
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPH801200046
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-21T03:37:03Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb65ced6b1ef8b46575c0191eb69986b2d67ff4b4399eaae40eeb7e3ec95ec6. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:37:03Z), 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/JPH801200046.
    date published: 2026-07-21T03:37:03Z
  audio: 涙そうそう
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 77.002
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.612
    additional property: Energy
      type: PropertyValue
      value: 0.419
    additional property: Speechiness
      type: PropertyValue
      value: 0.024
    additional property: Acousticness
      type: PropertyValue
      value: 0.34
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.102
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.339
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.93
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: シングルベッド
  type: MusicRecording
  duration: PT5M11S
  duration ms: 311053
  explicit: false
  by artist: 大友康平
  in album: J-STANDARD BALLADS
    type: MusicAlbum
    date published: 2012-11-07
  genre: enka
  genre: j-pop
  genre: kayokyoku
  isrc code: JPH801200047
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T18:55:50+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x800bb45f598e10ff6af1339964057cc6ffb39afefa1cc737887ee44922e921b7
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: シングルベッド
track: TRUE LOVE
track: POPCORN

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 958194

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/958194

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPH801200047

OTSTimestamp
type: PropertyValue
value: 2026-07-15T20:32:27Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800bb45f598e10ff6af1339964057cc6ffb39afefa1cc737887ee44922e921b7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPH801200047.
date published: 2026-07-15T20:32:27Z

シングルベッド
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 84.944
additional property: Musical Key
  type: PropertyValue
  value: 1
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.59
additional property: Energy
  type: PropertyValue
  value: 0.522
additional property: Speechiness
  type: PropertyValue
  value: 0.029
additional property: Acousticness
  type: PropertyValue
  value: 0.416
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.116
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.327
additional property: Loudness (dB)
  type: PropertyValue
  value: -11.259
additional property: Key Name
  type: PropertyValue
  value: C#
additional property: Mode Name
  type: PropertyValue
  value: Minor

TRUE LOVE
type: MusicRecording
duration: PT3M20S
duration ms: 200573
explicit: false
by artist: 大友康平
in album: J-STANDARD BALLADS
  type: MusicAlbum
  date published: 2012-11-07
genre: enka
genre: j-pop
genre: kayokyoku
isrc code: JPH801200048
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-05T07:30:55+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x91545c2c5ea4fad6444ff77ee0c30838b39fdbba5860cfdce7ef821629ce2cb5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956772
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956772
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPH801200048
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-05T10:01:46Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91545c2c5ea4fad6444ff77ee0c30838b39fdbba5860cfdce7ef821629ce2cb5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPH801200048.
  date published: 2026-07-05T10:01:46Z
audio: TRUE LOVE
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 100.101
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.762
  additional property: Energy
    type: PropertyValue
    value: 0.207
  additional property: Speechiness
    type: PropertyValue
    value: 0.031
  additional property: Acousticness
    type: PropertyValue
    value: 0.782
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.112
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.382
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.185
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

POPCORN
type: MusicRecording
duration: PT5M0S
duration ms: 300960
explicit: false
by artist: 大友康平
in album: J-STANDARD BALLADS
  type: MusicAlbum
  date published: 2012-11-07
genre: enka
genre: j-pop
genre: kayokyoku
isrc code: JPH801200049
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-03T04:19:37+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xebc5ba2179aae1ff5879572efcffb9ba24a589ff4f112d8a2dafa5a513e37a05
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956484
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956484
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPH801200049
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-03T10:47:44Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc5ba2179aae1ff5879572efcffb9ba24a589ff4f112d8a2dafa5a513e37a05. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPH801200049.
  date published: 2026-07-03T10:47:44Z
audio: POPCORN
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 81.866
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.607
  additional property: Energy
    type: PropertyValue
    value: 0.453
  additional property: Speechiness
    type: PropertyValue
    value: 0.027
  additional property: Acousticness
    type: PropertyValue
    value: 0.243
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.251
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.334
  additional property: Loudness (dB)
    type: PropertyValue
    value: -7.755
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

So Long
type: MusicAlbum
date published: 2013-12-04