Letters to Delphi
type: MusicGroup
popularity: 2
followers: 29
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8991834d6b62a3719a913a6d0ef4095a85d9290fa789ea04a2bcef8943b4de09
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953915
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953915
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/19c9618e-0535-417a-8bbb-cefdd7e3942b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/19c9618e-0535-417a-8bbb-cefdd7e3942b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/19c9618e-0535-417a-8bbb-cefdd7e3942b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T08:36:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8991834d6b62a3719a913a6d0ef4095a85d9290fa789ea04a2bcef8943b4de09","name":"Letters to Delphi","registered_at":"2026-06-15T22:32:35Z","symbol":"NIM0852492","token_address":"0x027ecac0771c638fb774a391b0f5a5c51ee7cd58","type":"artist","uuid":"19c9618e-0535-417a-8bbb-cefdd7e3942b"}
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 0x8991834d6b62a3719a913a6d0ef4095a85d9290fa789ea04a2bcef8943b4de09. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19c9618e-0535-417a-8bbb-cefdd7e3942b.json and https://artists.proofprofile.net/proofs/artist/19c9618e-0535-417a-8bbb-cefdd7e3942b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T08:36:32Z
  text: {"copyright_id":"0x8991834d6b62a3719a913a6d0ef4095a85d9290fa789ea04a2bcef8943b4de09","name":"Letters to Delphi","registered_at":"2026-06-15T22:32:35Z","symbol":"NIM0852492","token_address":"0x027ecac0771c638fb774a391b0f5a5c51ee7cd58","type":"artist","uuid":"19c9618e-0535-417a-8bbb-cefdd7e3942b"}
album: Winter Elegy
  type: MusicAlbum
  date published: 2025-01-31
  track: Winter Elegy
    type: MusicRecording
    duration: PT5M16S
    duration ms: 316634
    explicit: false
    by artist: Letters to Delphi
    in album: Winter Elegy
      type: MusicAlbum
      date published: 2025-01-31
    isrc code: SEYOK2501732
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T12:42:40+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xcd366de395cd1f07e417adb26ac79b16cf47de2ed2c8d1389ed3fc20a2b71c0c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958736
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958736
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEYOK2501732
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T15:43:58Z
    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 0xcd366de395cd1f07e417adb26ac79b16cf47de2ed2c8d1389ed3fc20a2b71c0c. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:43:58Z), 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/SEYOK2501732.
      date published: 2026-07-19T15:43:58Z
    audio: Winter Elegy
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 119.617
      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: 0.53
      additional property: Energy
        type: PropertyValue
        value: 0.378
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.89
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.036
      additional property: Liveness
        type: PropertyValue
        value: 0.116
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.289
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.517
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Endless Video Store
  type: MusicAlbum
  date published: 2025-06-18