nica
type: MusicGroup
description: Nica or NICA may refer to: Nīca, a village in Latvia Nica, the name in some languages of Nice, a French city "Nica", a jazz tune composed by Sonny Clark Nica is an adjective which may refer to: N
popularity: 19
followers: 361
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x308af5571e1461f36ee92206a0f56f9f2493d13208ab9c6f209a76420336bdda
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953741
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953741
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9b2747a6-d8cb-4522-9510-615a836ae618.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9b2747a6-d8cb-4522-9510-615a836ae618.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9b2747a6-d8cb-4522-9510-615a836ae618
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T04:44:49Z
additional property: OTSCanonicalRecord
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 0x308af5571e1461f36ee92206a0f56f9f2493d13208ab9c6f209a76420336bdda. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b2747a6-d8cb-4522-9510-615a836ae618.json and https://artists.proofprofile.net/proofs/artist/9b2747a6-d8cb-4522-9510-615a836ae618.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:44:49Z
album: melodica
  type: MusicAlbum
  date published: 2023-08-08
  track: Casa
    type: MusicRecording
    duration: PT6M4S
    duration ms: 364000
    explicit: false
    by artist: nica
    in album: melodica
      type: MusicAlbum
      date published: 2023-08-08
    isrc code: JPH492305001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T08:21:32+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xfd01139d7f0ba75e048e40fe768b09cbdaa125ef71f5f6a8696a2df6f9685fb8
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958130
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958130
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPH492305001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T11:23:16Z
    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 0xfd01139d7f0ba75e048e40fe768b09cbdaa125ef71f5f6a8696a2df6f9685fb8. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:23:16Z), 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/JPH492305001.
      date published: 2026-07-15T11:23:16Z
    audio: Casa
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 105.005
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.454
      additional property: Energy
        type: PropertyValue
        value: 0.445
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.524
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.657
      additional property: Liveness
        type: PropertyValue
        value: 0.264
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.231
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.009
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Summer Time
    type: MusicRecording
    duration: PT7M56S
    duration ms: 476000
    explicit: false
    by artist: nica
    in album: melodica
      type: MusicAlbum
      date published: 2023-08-08
    isrc code: JPH492305002
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T05:46:33+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xaec7670a9b01058cbb8e203ba072e1f9f3eda132980795a9f70dd722665f6b8a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPH492305002
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0xaec7670a9b01058cbb8e203ba072e1f9f3eda132980795a9f70dd722665f6b8a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPH492305002.
      date published: 2026-07-04T10:04:33Z
    audio: Summer Time
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 144.693
      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: 0.767
      additional property: Energy
        type: PropertyValue
        value: 0.517
      additional property: Speechiness
        type: PropertyValue
        value: 0.04
      additional property: Acousticness
        type: PropertyValue
        value: 0.197
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.83
      additional property: Liveness
        type: PropertyValue
        value: 0.122
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.939
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.504
      additional property: Key Name
      additional property: Mode Name
  track: Sound Escape
  track: Aurora
  track: Under The Sun
  track: 4World
  track: Sunset Line

Key Name
type: PropertyValue
value: C#

Mode Name
type: PropertyValue
value: Minor

Sound Escape
type: MusicRecording
duration: PT7M14S
duration ms: 434000
explicit: false
by artist: nica
in album: melodica
  type: MusicAlbum
  date published: 2023-08-08
isrc code: JPH492305004
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-17T13:13:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x60d452b181065349440185ba1b34d6cd2ff966755329a5db49fbe01f65a5bffa
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958420
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958420
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPH492305004
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-17T13:33:01Z
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 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 0x60d452b181065349440185ba1b34d6cd2ff966755329a5db49fbe01f65a5bffa. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/JPH492305004.
  date published: 2026-07-17T13:33:01Z
audio: Sound Escape
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 123.976
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.79
  additional property: Energy
    type: PropertyValue
    value: 0.234
  additional property: Speechiness
    type: PropertyValue
    value: 0.049
  additional property: Acousticness
    type: PropertyValue
    value: 0.835
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.811
  additional property: Liveness
    type: PropertyValue
    value: 0.091
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.533
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.021
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Aurora
type: MusicRecording
duration: PT3M34S
duration ms: 214000
explicit: false
by artist: nica
in album: melodica
  type: MusicAlbum
  date published: 2023-08-08
isrc code: JPH492305005
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-13T15:41:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xabc21d7e486624d1d6dcf8a6899d2e66edbbbc812383a134e562f24120f908da
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957874
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957874
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPH492305005
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-13T15:43:57Z
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 0xabc21d7e486624d1d6dcf8a6899d2e66edbbbc812383a134e562f24120f908da. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/JPH492305005.
  date published: 2026-07-13T15:43:57Z
audio: Aurora
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 94.988
  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: 0.594
  additional property: Energy
    type: PropertyValue
    value: 0.617
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.759
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.879
  additional property: Liveness
    type: PropertyValue
    value: 0.206
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.762
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.304
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Under The Sun
type: MusicRecording
duration: PT6M52S
duration ms: 412000
explicit: false
by artist: nica
in album: melodica
  type: MusicAlbum
  date published: 2023-08-08
isrc code: JPH492305006
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-17T13:54:26+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf7be4c992f4f09512b02f6caa381baf30df4dba943a51d89678a2521807b463f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958428
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958428
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPH492305006
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-17T15:15:14Z
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 0xf7be4c992f4f09512b02f6caa381baf30df4dba943a51d89678a2521807b463f. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/JPH492305006.
  date published: 2026-07-17T15:15:14Z
audio: Under The Sun
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 203.16
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.331
  additional property: Energy
    type: PropertyValue
    value: 0.278
  additional property: Speechiness
    type: PropertyValue
    value: 0.031
  additional property: Acousticness
    type: PropertyValue
    value: 0.792
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.869
  additional property: Liveness
    type: PropertyValue
    value: 0.369
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.302
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.675
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Minor

4World
type: MusicRecording
duration: PT5M18S
duration ms: 318000
explicit: false
by artist: nica
in album: melodica
  type: MusicAlbum
  date published: 2023-08-08
isrc code: JPH492305007
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-05T05:13:15+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb5d99ba8c0e040be0c58c19b9b0dfa7cd456e0e5dc28cd0880b812e1a3f24b96
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/JPH492305007
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 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 0xb5d99ba8c0e040be0c58c19b9b0dfa7cd456e0e5dc28cd0880b812e1a3f24b96. 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/JPH492305007.
  date published: 2026-07-05T10:01:46Z
audio: 4World
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 99.948
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.362
  additional property: Energy
    type: PropertyValue
    value: 0.423
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.897
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.812
  additional property: Liveness
    type: PropertyValue
    value: 0.207
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.196
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.965
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Sunset Line
type: MusicRecording
duration: PT4M54S
duration ms: 294000
explicit: false
by artist: nica
in album: melodica
  type: MusicAlbum
  date published: 2023-08-08
isrc code: JPH492305009
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-16T16:57:48+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe18574e549881d116c829b8d5df561601e41a3b516788642f5812352c7e0ce56
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/JPH492305009
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 0xe18574e549881d116c829b8d5df561601e41a3b516788642f5812352c7e0ce56. 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/JPH492305009.
  date published: 2026-07-16T19:42:29Z
audio: Sunset Line
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 91.993
  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: 0.615
  additional property: Energy
    type: PropertyValue
    value: 0.512
  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.649
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.845
  additional property: Liveness
    type: PropertyValue
    value: 0.093
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.424
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.413
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major