La Sombra
type: MusicGroup
popularity: 3
followers: 294
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x84497f2828f69624cd5dc880ba2793b2f8cd47035c1f5fd15a5b1499875e3121
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953909
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953909
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/083be149-f6bf-4594-857c-564e62b7c163.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/083be149-f6bf-4594-857c-564e62b7c163.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/083be149-f6bf-4594-857c-564e62b7c163
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:53:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x84497f2828f69624cd5dc880ba2793b2f8cd47035c1f5fd15a5b1499875e3121","name":"La Sombra","registered_at":"2026-06-15T16:23:27Z","symbol":"NIM0764450","token_address":"0xe479e8759fe9585e09a16b14c4416839360e2638","type":"artist","uuid":"083be149-f6bf-4594-857c-564e62b7c163"}
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 0x84497f2828f69624cd5dc880ba2793b2f8cd47035c1f5fd15a5b1499875e3121. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/083be149-f6bf-4594-857c-564e62b7c163.json and https://artists.proofprofile.net/proofs/artist/083be149-f6bf-4594-857c-564e62b7c163.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0x84497f2828f69624cd5dc880ba2793b2f8cd47035c1f5fd15a5b1499875e3121","name":"La Sombra","registered_at":"2026-06-15T16:23:27Z","symbol":"NIM0764450","token_address":"0xe479e8759fe9585e09a16b14c4416839360e2638","type":"artist","uuid":"083be149-f6bf-4594-857c-564e62b7c163"}
album: Walrider
  type: MusicAlbum
  date published: 2023-10-13
album: Lullaby (Mourning)
  type: MusicAlbum
  date published: 2024-09-21
  track: Lullaby (Mourning)
    type: MusicRecording
    duration: PT3M14S
    duration ms: 194500
    explicit: false
    by artist: La Sombra
    in album: Lullaby (Mourning)
      type: MusicAlbum
      date published: 2024-09-21
    isrc code: QZ9S32400101
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T13:18:01+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9e31bf514ff52b1ea7df3d136b0c5f07afa548d74d37a7cac71a263ca56156a8
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959011
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959011
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ9S32400101
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T13:26:15Z
    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 0x9e31bf514ff52b1ea7df3d136b0c5f07afa548d74d37a7cac71a263ca56156a8. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T13:26:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ9S32400101 — a six-check JSON result.
      date published: 2026-07-21T13:26:15Z
    audio: Lullaby (Mourning)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 79.38
      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: 0.337
      additional property: Energy
        type: PropertyValue
        value: 0.449
      additional property: Speechiness
        type: PropertyValue
        value: 0.038
      additional property: Acousticness
        type: PropertyValue
        value: 0.002
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.188
      additional property: Liveness
        type: PropertyValue
        value: 0.187
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.064
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.885
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major