Last Call
type: MusicGroup
genre: reggae rock
popularity: 9
followers: 2938
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0581e1024a19bd2f5fc1147147a59f8d23ae95447963bcb431fa605931608093
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953949
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953949
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1a1a86aa-90b6-4bcd-a0a6-274a995f8231.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1a1a86aa-90b6-4bcd-a0a6-274a995f8231.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1a1a86aa-90b6-4bcd-a0a6-274a995f8231
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T13:28:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0581e1024a19bd2f5fc1147147a59f8d23ae95447963bcb431fa605931608093","name":"Last Call","registered_at":"2026-06-15T22:32:29Z","symbol":"NIM0852469","token_address":"0x2ec046d3e680e24d056c5d59042df7c0327b883d","type":"artist","uuid":"1a1a86aa-90b6-4bcd-a0a6-274a995f8231"}
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 0x0581e1024a19bd2f5fc1147147a59f8d23ae95447963bcb431fa605931608093. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a1a86aa-90b6-4bcd-a0a6-274a995f8231.json and https://artists.proofprofile.net/proofs/artist/1a1a86aa-90b6-4bcd-a0a6-274a995f8231.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0x0581e1024a19bd2f5fc1147147a59f8d23ae95447963bcb431fa605931608093","name":"Last Call","registered_at":"2026-06-15T22:32:29Z","symbol":"NIM0852469","token_address":"0x2ec046d3e680e24d056c5d59042df7c0327b883d","type":"artist","uuid":"1a1a86aa-90b6-4bcd-a0a6-274a995f8231"}
album: Bad Trip
  type: MusicAlbum
  date published: 2023-08-16
  track: Bad Trip
    type: MusicRecording
    duration: PT3M6S
    duration ms: 186602
    explicit: true
    by artist: Last Call
    in album: Bad Trip
      type: MusicAlbum
      date published: 2023-08-16
    genre: reggae rock
    isrc code: QZRP42354919
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T13:57:52+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xcb06e55c93737ef7086f79935d63e2ad7eadf3368d3646aba758c7357d433e3e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958561
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958561
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZRP42354919
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T14:22:01Z
    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 0xcb06e55c93737ef7086f79935d63e2ad7eadf3368d3646aba758c7357d433e3e. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZRP42354919.
      date published: 2026-07-18T14:22:01Z
    audio: Bad Trip
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 114.148
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.714
      additional property: Energy
        type: PropertyValue
        value: 0.493
      additional property: Speechiness
        type: PropertyValue
        value: 0.04
      additional property: Acousticness
        type: PropertyValue
        value: 0.361
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.221
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.52
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.719
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Sunday Morning
  type: MusicAlbum
  date published: 2023-08-24
album: Infrared
  type: MusicAlbum
  date published: 2023-09-10
  track: Infrared
    type: MusicRecording
    duration: PT3M3S
    duration ms: 183150
    explicit: false
    by artist: Last Call
    in album: Infrared
      type: MusicAlbum
      date published: 2023-09-10
    genre: reggae rock
    isrc code: QZTAX2352573
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T15:03:09+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xefad498602921a7f132108b0534421c3cb895291fe12b71e1ee4832257100208
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958169
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958169
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAX2352573
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T18:04:57Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefad498602921a7f132108b0534421c3cb895291fe12b71e1ee4832257100208. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:04:57Z), 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/QZTAX2352573.
      date published: 2026-07-15T18:04:57Z
    audio: Infrared
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 99.993
      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: 0.695
      additional property: Energy
        type: PropertyValue
        value: 0.622
      additional property: Speechiness
        type: PropertyValue
        value: 0.027
      additional property: Acousticness
        type: PropertyValue
        value: 0.121
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: MeLlamoSancho
album: Lilith
album: Black

Liveness
type: PropertyValue
value: 0.123

Valence (Positivity)
type: PropertyValue
value: 0.419

Loudness (dB)
type: PropertyValue
value: -7.24

Key Name
type: PropertyValue
value: Ab

Mode Name
type: PropertyValue
value: Major

MeLlamoSancho
type: MusicAlbum
date published: 2024-01-25

Lilith
type: MusicAlbum
date published: 2024-03-18

Black
type: MusicAlbum
date published: 2024-03-18