Lena Rivers
type: MusicGroup
genre: lullaby
popularity: 3
followers: 170
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8f72f12254d0d02a5b1913b227d858c15386739d51d3019f4c19b91a50a568ee
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954139
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954139
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7f9048c7-13ea-497b-b8dd-05e97c34883d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7f9048c7-13ea-497b-b8dd-05e97c34883d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7f9048c7-13ea-497b-b8dd-05e97c34883d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T21:12:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8f72f12254d0d02a5b1913b227d858c15386739d51d3019f4c19b91a50a568ee","name":"Lena Rivers","registered_at":"2026-06-17T10:07:24Z","symbol":"NIM1361949","token_address":"0xccafdf3b3e8677fe393445cb5011ecd535c002b5","type":"artist","uuid":"7f9048c7-13ea-497b-b8dd-05e97c34883d"}
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 0x8f72f12254d0d02a5b1913b227d858c15386739d51d3019f4c19b91a50a568ee. Chain 2 (Bitcoin): anchored in block 954141 (2026-06-17T21:14:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f9048c7-13ea-497b-b8dd-05e97c34883d.json and https://artists.proofprofile.net/proofs/artist/7f9048c7-13ea-497b-b8dd-05e97c34883d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T21:14:35Z
  text: {"copyright_id":"0x8f72f12254d0d02a5b1913b227d858c15386739d51d3019f4c19b91a50a568ee","name":"Lena Rivers","registered_at":"2026-06-17T10:07:24Z","symbol":"NIM1361949","token_address":"0xccafdf3b3e8677fe393445cb5011ecd535c002b5","type":"artist","uuid":"7f9048c7-13ea-497b-b8dd-05e97c34883d"}
album: Children's Songs Musicbox
  type: MusicAlbum
  date published: 2020-03-21
album: Sparrow's Song
  type: MusicAlbum
  date published: 2021-04-16
  track: Sparrow's Song
    type: MusicRecording
    duration: PT2M48S
    duration ms: 168739
    explicit: false
    by artist: Lena Rivers
    in album: Sparrow's Song
      type: MusicAlbum
      date published: 2021-04-16
    genre: lullaby
    isrc code: QZAKB2104963
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T18:43:14+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xffea54f94d1bceceb4f80a7a306456a3ceb33dffd427ff75b914bd0f8df793cd
    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/QZAKB2104963
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T21:45:21Z
    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 0xffea54f94d1bceceb4f80a7a306456a3ceb33dffd427ff75b914bd0f8df793cd. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:45:21Z), 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/QZAKB2104963.
      date published: 2026-07-19T21:45:21Z
    audio: Sparrow's Song
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 99.761
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.492
      additional property: Energy
        type: PropertyValue
        value: 0.37
      additional property: Speechiness
        type: PropertyValue
        value: 0.071
      additional property: Acousticness
        type: PropertyValue
        value: 0.986
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.962
      additional property: Liveness
        type: PropertyValue
        value: 0.081
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.631
      additional property: Loudness (dB)
        type: PropertyValue
        value: -13.317
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Oh! Susanna
  type: MusicAlbum
  date published: 2022-03-27